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Littérature scientifique sur le sujet « And micronutrients »

Auteur : Grafiati
Publié le 14 mars 2023

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Articles de revues sur le sujet "And micronutrients"

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Thapa, Sushil, Ammar Bhandari, Rajan Ghimire, Qingwu Xue, Fanson Kidwaro, Shirin Ghatrehsamani, Bijesh Maharjan et Mark Goodwin. « Managing Micronutrients for Improving Soil Fertility, Health, and Soybean Yield ». Sustainability 13, no 21 (25 octobre 2021) : 11766. http://dx.doi.org/10.3390/su132111766.

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Plants need only a small quantity of micronutrients, but they are essential for vital cell functions. Critical micronutrients for plant growth and development include iron (Fe), boron (B), manganese (Mn), zinc (Zn), copper (Cu), molybdenum (Mo), chlorine (Cl), and nickel (Ni). The deficiency of one or more micronutrients can greatly affect plant production and quality. To explore the potential for using micronutrients, we reviewed the literature evaluating the effect of micronutrients on soybean production in the U.S. Midwest and beyond. Soil and foliar applications were the major micronutrient application methods. Overall, studies indicated the positive yield response of soybean to micronutrients. However, soybean yield response to micronutrients was not consistent among studies, mainly because of different environmental conditions such as soil type, soil organic matter (SOM), moisture, and temperature. Despite this inconsistency, there has been increased pressure for growers to apply micronutrients to soybeans due to a fact that deficiencies have increased with the increased use of high-yielding cultivars. Further studies on quantification and variable rate application of micronutrients under different soil and environmental conditions are warranted to acquire more knowledge and improve the micronutrient management strategies in soybean. Since the SOM could meet the micronutrient need of many crops, management strategies that increase SOM should be encouraged to ensure nutrient availability and improve soil fertility and health for sustainable soybean production.
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Woodside, Jayne V., Damian McCall, Claire McGartland et Ian S. Young. « Micronutrients : dietary intake v. supplement use ». Proceedings of the Nutrition Society 64, no 4 (novembre 2005) : 543–53. http://dx.doi.org/10.1079/pns2005464.

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Whilst clinical deficiency of micronutrients is uncommon in the developed world, a suboptimal intake of certain micronutrients has been linked with an increased risk of chronic diseases such as CVD and cancer. Attention has therefore focused on increasing micronutrient status in order to theoretically reduce chronic disease risk. Increasing micronutrient status can involve a number of approaches: increasing dietary intake of micronutrient-rich foods; food fortification; use of supplements. Observational cohort studies have demonstrated an association between high intakes of micronutrients such as vitamin E, vitamin C, folic acid and β-carotene, and lower risk of CHD, stroke and cancer at various sites. However, randomised intervention trials of micronutrient supplements have, to date, largely failed to show an improvement in clinical end points. The discordance between data from cohort studies and the results so far available from clinical trials remains to be explained. One reason may be that the complex mixture of micronutrients found, for example, in a diet high in fruit and vegetables may be more effective than large doses of a small number of micronutrients, and therefore that intervention studies that use single micronutrient supplements are unlikely to produce a lowering of disease risk. Studies concentrating on whole foods (e.g. fruit and vegetables) or diet pattern (e.g. Mediterranean diet pattern) may be more effective in demonstrating an effect on clinical end points. The present review will consider the clinical trial evidence for a beneficial effect of micronutrient supplements on health, and review the alternative approaches to the study of dietary intake of micronutrients.
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Gombart, Adrian F., Adeline Pierre et Silvia Maggini. « A Review of Micronutrients and the Immune System–Working in Harmony to Reduce the Risk of Infection ». Nutrients 12, no 1 (16 janvier 2020) : 236. http://dx.doi.org/10.3390/nu12010236.

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Immune support by micronutrients is historically based on vitamin C deficiency and supplementation in scurvy in early times. It has since been established that the complex, integrated immune system needs multiple specific micronutrients, including vitamins A, D, C, E, B6, and B12, folate, zinc, iron, copper, and selenium, which play vital, often synergistic roles at every stage of the immune response. Adequate amounts are essential to ensure the proper function of physical barriers and immune cells; however, daily micronutrient intakes necessary to support immune function may be higher than current recommended dietary allowances. Certain populations have inadequate dietary micronutrient intakes, and situations with increased requirements (e.g., infection, stress, and pollution) further decrease stores within the body. Several micronutrients may be deficient, and even marginal deficiency may impair immunity. Although contradictory data exist, available evidence indicates that supplementation with multiple micronutrients with immune-supporting roles may modulate immune function and reduce the risk of infection. Micronutrients with the strongest evidence for immune support are vitamins C and D and zinc. Better design of human clinical studies addressing dosage and combinations of micronutrients in different populations are required to substantiate the benefits of micronutrient supplementation against infection.
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Venugopal, N. V. S., et G. N. V. Mohana Rao. « A Facile Synthesis and Characterization of new Nitrogen, Phosphorus, Potassium (N-P-K) Fertilizer Fortified with Tri-micronutrient Matrix and its application for Optimal Plant Augmentation ». Oriental Journal Of Chemistry 37, no 6 (30 décembre 2021) : 1452–57. http://dx.doi.org/10.13005/ojc/370626.

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At present in agricultural techniques engaged the optimal nutrient supply is very imperative factor for elevated crop yield and all essential plant macro and micronutrients. Micronutrients play vital role in photosynthesis. For balanced crop nutrition micronutrient support is essential. Micronutrient fertilizer required in small quantities by plants and occupy vital role in physiology of plant kingdom. Proven fact is decisive plant functions are over involved if enough micronutrients are engaged. In this paper the author developed a new N-P-K fertilizer fortified with tri -micronutrient matrix and its application for optimal Plant growth. The author developed and analyzed hundred percent water soluble active fertilizer(15-15-15) with three important micronutrients (-3.4 0.5%Zn, 0.5%Fe, 0.5% Mg). Pot experiments were conducted with and without proposed fertilizer on Solanum lycopersicum(tomato) seeds. The proposed enhanced efficiency fertilizer with tri micronutrient matrix showed better plant growth as compared to normal untreated fertilizer in low nutrient soil field.
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Barclay, Denis. « Multiple Fortification of Beverages ». Food and Nutrition Bulletin 19, no 2 (janvier 1998) : 168–71. http://dx.doi.org/10.1177/156482659801900213.

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Diet-related micronutrient deficiencies rarely occur in isolation; deficiencies of iodine and vitamin A or of iron and vitamin A or zinc are often observed in the same populations. In addition, widespread deficiencies of some micronutrients, for example, zinc and calcium, may often go undiagnosed because of the absence of specific and sensitive status indicators. Multiple micronutrient supplementation can be more effective in improving nutritional status than supplementation with single key micronutrients; therefore, the multiple fortification of appropriate food vectors, including beverages, is of interest from the nutritional standpoint. Beverages fortified with multiple micronutrients include dairy products, chocolate beverages, fruit juices, and soya-based drinks. As well as the documented or estimated micronutrient deficiencies and the requirements of the target population or consumer group, the conception of such a multiply fortified beverage must take into account a number of other important factors. The choice of the chemical form of the fortification micronutrients should be made with consideration of bioavailability, the effects on the organoleptic characteristics of the particular beverage, and cost. The initial calculation of the composition of the micronutrient premix should include the levels of micronutrients in the raw materials used and the estimated losses of specific micronutrients during processing and storage. Preliminary production and storage trials are then needed to determine the actual losses. The composition of the micronutrient premix may then be finalized. Interactions, both positive and negative, between fortification micronutrients may also need to be considered. For example, the bioavailability of iron may be enhanced by the addition of vitamin C, whereas mineral–vitamin and vitamin–vitamin interactions can accelerate the destruction of some vitamins. To render quality control procedures simple and cost-effective, only a limited number of fortification micronutrients, which are especially sensitive to losses and which are easy to measure, may be analysed. Simple, inexpensive, and rigorous analytical methods for such measurements are now available.
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Denton-Thompson, Sarah M., et Emma J. Sayer. « Micronutrients in Food Production : What Can We Learn from Natural Ecosystems ? » Soil Systems 6, no 1 (12 janvier 2022) : 8. http://dx.doi.org/10.3390/soilsystems6010008.

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Soil micronutrients limit crop productivity in many regions worldwide, and micronutrient deficiencies affect over two billion people globally. Microbial biofertilizers could combat these issues by inoculating arable soils with microorganisms that mobilize micronutrients, increasing their availability to crop plants in an environmentally sustainable and cost-effective manner. However, the widespread application of biofertilizers is limited by complex micronutrient–microbe–plant interactions, which reduce their effectiveness under field conditions. Here, we review the current state of seven micronutrients in food production. We examine the mechanisms underpinning microbial micronutrient mobilization in natural ecosystems and synthesize the state-of-knowledge to improve our overall understanding of biofertilizers in food crop production. We demonstrate that, although soil micronutrient concentrations are strongly influenced by soil conditions, land management practices can also substantially affect micronutrient availability and uptake by plants. The effectiveness of biofertilizers varies, but several lines of evidence indicate substantial benefits in co-applying biofertilizers with conventional inorganic or organic fertilizers. Studies of micronutrient cycling in natural ecosystems provide examples of microbial taxa capable of mobilizing multiple micronutrients whilst withstanding harsh environmental conditions. Research into the mechanisms of microbial nutrient mobilization in natural ecosystems could, therefore, yield effective biofertilizers to improve crop nutrition under global changes.
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Noguera, Jose C., Neil B. Metcalfe, Winnie Boner et Pat Monaghan. « Sex-dependent effects of nutrition on telomere dynamics in zebra finches ( Taeniopygia guttata ) ». Biology Letters 11, no 2 (février 2015) : 20140938. http://dx.doi.org/10.1098/rsbl.2014.0938.

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At a cellular level, oxidative stress is known to increase telomere attrition, and hence cellular senescence and risk of disease. It has been proposed that dietary micronutrients play an important role in telomere protection due to their antioxidant properties. We experimentally manipulated dietary micronutrients during early life in zebra finches ( Taeniopygia guttata ). We found no effects of micronutrient intake on telomere loss during chick growth. However, females given a diet high in micronutrients during sexual maturation showed reduced telomere loss; there was no such effect in males. These results suggest that micronutrients may influence rates of cellular senescence, but differences in micronutrient requirement and allocation strategies, probably linked to the development of sexual coloration, may underlie sex differences in response.
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Klatt, Kevin C., Emily R. Smith et Matthew D. Barberio. « Toward a more stable understanding of pregnancy micronutrient metabolism ». American Journal of Physiology-Endocrinology and Metabolism 321, no 2 (1 août 2021) : E260—E263. http://dx.doi.org/10.1152/ajpendo.00156.2021.

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There is an urgent need to better understand the micronutrient demands of pregnancy due to the complex physiological adaptations during the gestational period and the importance of micronutrients in maternal-fetal health. Rigorous studies of micronutrients in pregnancy are significantly lacking due to a number of issues including the exclusion of pregnant people in research, methodological barriers to studying micronutrients, and the multidisciplinary expertise required for such studies. Stable isotopes present a unique methodological opportunity to quantify pregnancy-related changes in the absorption, distribution, metabolism, and excretion of micronutrients. We demonstrate here through a rapid review of the published literature that this approach is dramatically underutilized outside of calcium. In this perspective, we discuss the use of stable isotopes to study micronutrient physiology and our experiences in addressing the need for more studies in this area. Finally, we discuss how we might overcome major barriers to move toward a better understanding of micronutrient physiology in pregnancy.
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Hernández, Eovaldo. « 1031 EFFECT OF COMMERCIAL HUMIC ACIDS ON MICRONUTRIENT UPTAKE BY VEGETABLES ». HortScience 29, no 5 (mai 1994) : 576b—576. http://dx.doi.org/10.21273/hortsci.29.5.576b.

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Most of the studies on the effect of humic acids on micronutrient uptake by plants has been carried out in nutrient solutions. Commercial companies have tried, without adequate experimental support, to extend the conclusions of these studies to the production of vegetables in agricultural soils. The effect of humic acids on micronutrient uptake by plants has been attributed' to (a) the improved supply of micronutrients to the soil solution caused by a higher rate of release from soil minerals (probably via chelate formation by humic acids) and (b) the improved uptake of micronutrients as consequence of the larger root system promoted by hormonal compounds in the humic acids. In soils with limiting concentration of micronutrients (such as some calcareous soils) and low content of organic matter, chelation of micronutrients by added commercial humic acids might increase their availability to plants. However, in agricultural soils with and adequate content of organic matter, no significant effect of commercial humic acids on micronutrient uptake by plants can be detected.
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Ji, Xiaopeng, Michael A. Grandner et Jianghong Liu. « The relationship between micronutrient status and sleep patterns : a systematic review ». Public Health Nutrition 20, no 4 (5 octobre 2016) : 687–701. http://dx.doi.org/10.1017/s1368980016002603.

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AbstractObjectiveTo review articles on the relationship of dietary and circulating micronutrients with sleep patterns, and to identify issues surrounding implications for future research and public health practice.DesignA systematic review was conducted. PubMed, Embase and Scopus were searched through January 2016.SettingBoth experimental and observational studies were included. However, studies that focused on secondary sleep impairment due to comorbidities were excluded.SubjectsIndividuals in different age groups, from infants to older adults.ResultsA total of twenty-six articles were selected. In the articles reviewed, researchers generally supported a potential role of micronutrients, particularly Fe and Mg, in the development of sleep stages among infants and in reversing age-related alterations in sleep architecture in older adults. Micronutrient status has also been linked to sleep duration, with sleep duration positively associated with Fe, Zn and Mg levels, and negatively associated with Cu, K and vitamin B12 levels. The mechanisms underlying these relationships include the impact of micronutrients on excitatory/inhibitory neurotransmitters and the expression of circadian genes.ConclusionsAlthough the number of studies on the relationship between micronutrient status and sleep remains low, evidence has emerged that suggests a link between dietary/circulating micronutrients and sleep. Future research is needed to investigate the dose-dependent as well as the longitudinal relationships between micronutrient levels and human sleep across populations, test the interactions among micronutrients on sleep outcomes, and ultimately examine the clinical relevance of micronutrients on sleep health.
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Thèses sur le sujet "And micronutrients"

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Burgess, Joanna E. « Micronutrients for wastewater treatment ». Thesis, Cranfield University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323932.

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Soares, Luís Henrique. « Manejo fisiológico com base em tratamento de sementes e aplicação de organominerais via foliar para sistemas de alto potencial produtivo de soja ». Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-04022014-152437/.

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A produtividade de uma lavoura de soja representa apenas, aproximadamente, 20% do potencial genético. Dessa forma, a exploração das características genéticas tem sido alvo dos pesquisadores para incrementar a produtividade da cultura. Dentro disso, a potencialização fisiológica pela aplicação de estimulantes biológicos, desde a germinação das sementes até a fase reprodutiva da cultura, tem sido uma das principais estratégias adotadas. Visando um aporte à pesquisa nas respostas fisiológicas da cultura, objetivou-se avaliar os efeitos fisiológicos do tratamento de sementes e aplicações foliares de micronutrientes, hormônios e aminoácidos e o quanto estes representam na produção em sistemas de alta produtividade. Foram realizados dois experimentos, sendo um em casa de vegetação (condições parcialmente controladas) (Experimento I) e outro a campo (Experimento II) no Centro Universitário de Patos de Minas (UNIPAM), Patos de Minas-MG, durante o período de janeiro a maio de 2013. Foram realizadas avaliações bioquímicas (atividade das enzimas nitrato redutase, urease, catalase, peroxidase e superóxido dismutase, peroxidação de lipídios e teor de prolina), fisiológicas (fotossíntese liquida) e fenométricas (emergência, índice de velocidade emergência, valor SPAD, taxa de crescimento de raiz, caule e folha, massa de matéria seca total e área foliar), além do número de vagens e da produtividade. Para o primeiro experimento, foram utilizados quatro tratamentos de sementes (controle; micronutrientes - Zn, Mn, B, Mo, Ni e Co; hormônios - ácido indol butírico, ácido giberélico e cinetina; e aminoácidos - ácido glutâmico, arginina, glicina, metionina e cisteína) com seis repetições em delineamento inteiramente casualizado. No segundo experimento, foram utilizados seis tratamentos de semente (controle; micronutrientes; hormônios; aminoácidos; micronutrientes e hormônios; e micronutrientes e aminoácidos) em dois sistemas de manejo: sistema convencional e sistema para produtividade potencial, com utilização de redutor de crescimento e aplicações periódicas de organominerais via foliar (doze tratamentos com quatro repetições em delineamento em blocos ao acaso). Com base nos resultados obtidos, conclui-se que: (i) o tratamento de sementes com micronutrientes potencializa a assimilação de nitrogênio e a fotossíntese líquida, e incrementa o teor de clorofila (valor Spad) e taxa de crescimento de plantas de soja; (ii) a utilização de aminoácidos ou hormônios reduz o nível de estresse das plantas durante o período inicial de crescimento e aumenta a produção de massa de matéria seca; (iii) o tratamento de sementes com micronutrientes, hormônios ou aminoácidos incrementa o teor de clorofila (valor Spad), (iv) o sistema para produtividade potencial potencializa a atividade fisiológica das plantas e, consequentemente, aumenta o número de vagens por planta e a produtividade em relação ao sistema convencional; (v) em sistema para produtividade potencial, o tratamento de sementes com micronutrientes é o mais responsivo (aumento de produtividade em 18,5%), e (vi) no sistema convencional, o tratamento com micronutrientes e aminoácidos aumenta a produtividade em 80%.
The actual soybean productivity represents about 20% of genetic potential. Thus, the exploitation of genetic characteristics has been targeted by researchers to increase crop yield. In addition, the physiological potentiation by applying biological stimulants, from seed germination to the reproductive stage of the crop, has been one of the main strategies adopted. Seeking a contribution to research on the physiological responses of soybean crop, aimed to evaluate the physiological effects of seed treatment and foliar applications of micronutrients, amino acids and hormones and how they represent in the production of the high productivity systems. Two experiments were carried out, one in the greenhouse (partially controlled conditions) (Experiment I) and other in the field (Experiment II) at the University Center of \"Patos de Minas\" (UNIPAM), \"Patos de Minas\", \"Minas Gerais\" State, Brazil, during the period of January to May 2013. Biochemical assessments (nitrate reductase, urease, catalase, peroxidase and superoxide dismutase activities, lipid peroxidation and proline content), physiological (net photosynthesis) and fenometric evaluations (emergency, emergency speed index, Spad value, leaf area, growth rate of root, stem, leaf, total dry matter and leaf area), beyond of the number of pods per plant and productivity. For the first experiment, four seed treatments (control; micronutrients - Zn, Mn, B, Mo, Ni and Co; hormones - indol butyric acid, gibberellic acid and kinetin; and amino acids - glutamic acid, arginine, glycine, methionine and cysteine) with six replications were carried out in a completely randomized design. For the second experiment, six seed treatments (control; micronutrients; hormones; amino acids; micronutrients and hormones; and micronutrients and amino acids) were used in two management systems: conventional system and system for potential productivity, using growth reducer and periodic leaf applications of biological stimulants (twelve treatments with four replications in a randomized blocks design). Based on obtained results, it is concluded that: (i) the seed treatment with micronutrients potentiates the nitrogen assimilation and net photosynthesis, and increases the chlorophyll content (Spad value) and soybean plant growth rate; (ii) the use of amino acids or hormones reduces plant stress level during the initial period of plant growth and increase the dry matter production; (iii) the seed treatment with micronutrients, hormones or amino acids increases chlorophyll content (Spad value); (iv) the system for potential productivity potentiates the physiological activity of plants and, consequently, increases the number of pods per plant and productivity when compared to conventional system; (v) under system for potential productivity, the seed treatment with micronutrients is the most responsive (increases productivity in 18.5%); and (vi) under conventional system, the treatment with micronutrients and amino acids increases the productivity in 80%.
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Teixeira, Natália Martins [UNESP]. « Adubação foliar de zinco quelatizado e seus efeitos na produção de capim-mombaça ». Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/139517.

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Com a intensificação da produção pecuária são necessários avanços no manejo e adubação das plantas forrageiras, para aumentar a produtividade e manter-se competitivo no setor. A utilização de tecnologias, como a adubação foliar com micronutrientes, torna-se uma importante ferramenta para atingir a plenitude na produção agropecuária. O experimento foi conduzido em casa de vegetação da UNESP, Campus de Dracena, em vasos com capacidade para 4 dm3 de terra, com o objetivo de avaliar a produção de massa seca, teor e quantidade de nutrientes e qualidade bromatológica da forrageira Megathyrsus maximum (syn. Panicum maximum) cv. Mombaça adubado com zinco quelatizado, via foliar, em dois solos com distinta disponibilidade de Zn. O delineamento experimental foi inteiramente casualizado com quatro repetições. Os tratamentos foram arranjados em esquema fatorial 6X2, sendo seis doses foliares de zinco quelatizado, e duas condições de solo (com baixo e médio teor de Zn), acrescidos de um tratamento com sulfato de zinco e dois tratamentos com coquetel de nutrientes. Foram utilizados o Neossolo Quartzarênico, distrófico, fase cerrado, com baixo teor de zinco e o Argissolo Vermelho Amarelo, distrófico, com teores médios de zinco. Nas condições em que foi realizada a pesquisa, os resultados permitem concluir que: a aplicação foliar de Zn quelatizado, coquetel de nutrientes e sulfato de zinco não influenciaram a produção de massa seca do capim-mombaça; o teor de Zn na massa seca do capim-mombaça foi diretamente proporcional à dose de Zn quelatizado via foliar, contribuindo com o fornecimento do micronutriente para alimentação animal; o Zn na adubação foliar reduz os teores de K na massa seca do capim-mombaça cultivado em Argissolo; o teor de Zn no Argissolo aumentou com a aplicação de Zn quelatizado via foliar; o teor de FDN, FDA e PB no capim-mombaça não foi afetado em função da aplicação de Zn quelatizado via foliar; a massa do sistema radicular do capim-mombaça reduziu com a aplicação de Zn quelatizado via foliar no Neossolo Quartzarênico e não apresentou efeito no Argissolo; novos trabalhos de pesquisa devem ser realizados envolvendo o estudo de Zn e adubação foliar para avaliar seus efeitos em plantas forrageiras e suas interações com demais nutrientes.
With the intensification of livestock production are needed advances in the management and fertilization of forage crops, to enhance productivity, reducing costs and remaining competitive in the industry. The use of technologies such as foliar fertilizer with micronutrients, it becomes an important tool to achieve fulfillment in agricultural production. The experiment was conducted at UNESP greenhouse, Campus de Dracena, situated 421 meters above sea level, 21 ° 27 'south latitude and 51 ° 36' west longitude, in pots with a capacity of 4 dm3 of land, in order to evaluate the dry matter production, content and amount of nutrients and chemical quality of the forage Megathyrsus maximum (syn. Panicum maximum) cv. Mombasa fertilized with chelated zinc, foliar, in two soils with different availability of Zn. The experimental design was completely randomized with four replications. The treatments were arranged in a factorial scheme 6X2, six leaf doses of zinc chelate, and two soil conditions (low and medium Zn content), plus a treatment with zinc sulfate and two treatments with cocktail nutrients. The Entisol were used, dystrophic, cerrado phase, with low zinc content and Ultisol, dystrophic, with average zinc content. The conditions under which the survey was conducted, the results showed that: foliar application of chelated Zn cocktail of nutrients and zinc sulfate did not affect the dry matter production of mombaça grass; Zn content in the dry mass of mombaça grass was directly proportional to the dose of chelated Zn foliar contributing to the provision of micronutrient for animal feed; Zn in foliar fertilization reduces the K in the dry mass of mombaça grass grown Ultisol; Zn content in Ultisol increased with the application of chelated Zn foliar; NDF, ADF and CP in mombaça was not affected due to the application of Zn chelated foliar; the mass of the root system of mombaça grass reduced with the application of chelated Zn foliar in Entisol and had no effect on Ultisol; new research work should be carried out involving the study of Zn and foliar application to evaluate its effects on forage plants and their interactions with other nutrients.
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Bressy, Fernanda Costa. « Determinação de micromutrientes em amostras de tomates por tecnicas espectroanaliticas ». reponame:Repositório Institucional da UFBA, 2011. http://www.repositorio.ufba.br/ri/handle/ri/10810.

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A cultura do tomate tem ocupado lugar de destaque em todo mundo. O aumento na produtividade da hortaliça provocou um aumento na utilização de insumos agroquímicos, fazendo-se necessário o monitoramento de elementos essenciais e elementos potencialmente contaminantes. Neste trabalho foram determinadas as concentrações de elementos essenciais e elementos potencialmente contaminantes em tomates das espécies caqui, itália e cereja, em cultivos convencional e orgânico, em fase inicial e final de maturação. As amostras foram coletadas em vários estabelecimentos da cidade de Salvador, Bahia, Brasil visando avaliar as diferenças nas concentrações entre os estágios de maturação, tipo de cultivo e espécie, no fruto inteiro e em suas partes (casca, polpa e semente). Os elementos estudados foram Al, Ba, Cd, Cu, Co, Cr, Fe, Mn, Ni, Pb, Sb, Se, Sn, Sr, V e Zn. Após otimização do procedimento de preparo, as amostras foram submetidas à digestão em forno de micro-ondas com cavidade, usando a mistura de 3,5 mL de ácido nítrico concentrado destilado, 3,5 mL de água ultra pura e 1,0 mL de peróxido de hidrogênio. Para determinação dos elementos foram empregadas as técnicas espectrometria de emissão óptica com plasma indutivamente acoplado (ICP OES) e espectrometria de massas com plasma indutivamente acoplado (ICP-MS). Através dos resultados obtidos, foi possível comparar a concentração dos elementos estudados nos estágios de maturação, cultivo e espécies dos tomates analisados. Quanto ao estágio de maturação, os tomates em estágio final de maturação apresentaram maiores valores de concentração para a maioria dos elementos medidos, nas três espécies estudadas. Na comparação quanto ao tipo de cultivo, as amostras provenientes do manejo orgânico apresentaram maiores valores de micronutrientes e menores de elementos com potencial contaminante quando em comparação com as amostras de tomates oriundas de cultivo convencional. Em relação às diferentes espécies estudadas, observou-se que as amostras de tomate contribuem significativamente para a ingestão diária recomendada de Cr, Cu e Mn, sendo a espécie caqui a que mais contribui para a ingestão de Cu, a itália de Cr e a cereja de Mn. As concentrações dos elementos potencialmente tóxicos, encontradas para as amostras das três espécies de tomate, estão abaixo dos teores regulamentados pela ANVISA. Palavras-Chave: toma
Salvador
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Santana, Gisélia dos Santos. « Estudo da associação de micronutrientes (zinco, cobre e ferro) na infecção, e ou progressão para leishmaniose tegumentar em duas comunidades rurais do Estado da Bahia ». Centro de Pesquisas Gonçalo Moniz, 2014. https://www.arca.fiocruz.br/handle/icict/9044.

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Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil
A leishmaniose tegumentar (LT) é um problema de saúde pública nas Américas, não somente por sua alta incidência e ampla distribuição geográfica, mas também, pela possibilidade de produzir úlceras persistentes e desfigurantes. É endêmica no Brasil, ocorrendo em ambientes florestais e extraflorestais. A detecção de áreas de alto risco para a infecção humana pode auxiliar na implementação de estratégias de controle mais eficientes nas áreas endêmicas rurais. Objetivos: descrever as características epidemiológicas, prevalência da infecção por Leishmania ssp nas populações do povoado de São Gonçalo/Contendas do Sinçorá - Bahia e no Distritode Florestal/Município de Jequié, Bahia, correlacionando os fatores de risco estabelecidos na literatura com os diferentes grupos estudados (indivíduos infectados, não infectados, e doentes) e avaliar a influencia da desnutrição na infecção e ou progressão para a doença, para isso, foram avaliados parâmetros bioquímicos como dosagem de fosfatase alcalina e ferritina, além dos níveis de metais Zn, Cu e Fe no plasma dos indivíduos.Material e Métodos - desenvolveu-se um estudo de corte transversal, através de inquérito epidemiológico, e imunoalérgico (exames intradermorreação de Montenegro/IDRM, e sorológico/ELISA). Foram cadastradas 36 famílias (170 indivíduos) de São Gonçalo e 129 famílias (480 indivíduos) de Florestal. A partir dos dados obtidos, construiu-se um banco de dados no EPIINFO for Windows, onde foram feitas as análises. Resultados. Observou-se que alguns fatores de risco apresentaram maior prevalência de infecção (IDRM+, ou ELISA+), tais como: indivíduos adultos, trabalhador rural; gênero masculino; família que cria mais de uma espécie de animal doméstico, ou que tem mais que um tipo de animal próximo à residência; domicílio próximo a matas e rios; cobertura da casa com palha; lixo no terreno; ausência de água encanada, embora não foram estatisticamente significantes. Observou-se ainda menor prevalência da infecção em indivíduos com boas condições de moradia (casa cobertura com telha, piso de cerâmica), que não possuíam ou tinham apenas uma espécie de animal doméstico em casa, quintal limpo (onde os indivíduos queimavam seus lixos), porém, estatisticamente não foi significante. Não encontramos associação de aumento do risco para infecção com os níveis dos metais, entretanto, observamos associação dos níveis de Zn com o aumento significante do risco para desenvolvimento da doença nos indivíduos do Distrito de Florestal. Além disso, foi interessante notar que houve uma gradação tanto nos números absolutos quanto relativos de indivíduos com deficiência de Zn, partindo dos não infectados (18/54 ou 33,33%), para novos infectados (11/25 ou 44%) até os pacientes (6/6 ou 100%), de maneira semelhante ao que aconteceu com os níveis de IgG nos indivíduos de São Gonçalo. Conclusões: a existência de alguns fatores responsáveis pelo aumento de casos da doença na região (falta de saneamento básico, situação econômica precária, construção inadequada das casas, convívio com animais silvestres, ou domésticos). A deficiência de Zn aumenta o risco para doença LT, mas não para a infecção por Leishmania spp;. Desta forma uma estratégia de controle para a região seria avaliar melhor os focos de transmissão domiciliar, e extradomiciliar, implantando um sistema de manejo ambiental (conhecer melhor a faúna flebotomínica, e hábitos do vetor, evitar o acúmulo de lixo e detritos que possam atrair roedores, pequenos mamíferos, e funcionar como criadouros dos insetos).
The cutaneous leishmaniasis (CL) is a public health problem in the Americas, not only for its high incidence and wide geographical distribution, but also by the possibility of establishing persistent and disfiguring ulcers. It is endemic in Brazil, occurring in forest and around environments. The detection of high-risk areas for human infection may assist in implementing strategies for more efficient control in rural endemic areas. Objectives -.This study aimed to describe the epidemiological characteristics, prevalence of Leishmania spp, infection in populations of São Gonçalo a rural communities/Contendas do Sincorá - Bahia and Florestal (District/Jequié, Bahia), correlating risk factors established in the literature with different groups studied (infected individuals not infected, and patients) and assess the influence of malnutrition on infection and progression for disease, for that biochemical parameters will be evaluated as measure alkaline phosphatase and ferritin, beyond the levels of metals Zn, Cu and Fe in the plasma of subjects. Materials and Metholds.- We developed a cross-sectional study through epidemiologic and immunological investigation (Montenegro skin tests/MST, and serological/ELISA). 36 families (170 individuals) of São Gonçalo and 129 families (480 individuals) were registered in Florestal District. From the data obtained, we constructed a database in Epi-Info for Windows, where the analyses were performed. Results- The results showed that some risk factors had a higher prevalence of infection (MST+ or ELISA+), such as: adult individuals, rural workers, gender sex, family that creates more a domestic animal, or had more than one type of animal near home; homes near forests and rivers; cover the house with straw, trash on the ground, no running water, had a higher prevalence, although they were not statistically significant. We also observed a lower prevalence of infection in individuals with good living conditions (house with tile roof, tile floor), which lacked or had only one domestic animal in the house, clean the yard (where people burned their garbage) however, was not statistically significant. Not find association of increased risk for infection with metals level, however, we observed association of Zn levels with significantly increased risk for disease development in individuals of the Florestal District. Furthermore, it was interesting to note that there was a gradation in both absolute and relative numbers of individuals with disabilities Zn, starting from uninfected (18/54 or 33.3%), to newly infected (11/25 or 44%) to patients (6/6 or 100%), similarly to what happened with IgG levels in individuals of São Gonçalo. Conclusions - there are some factors associated for the increase in cases of the disease in the region, such as poor sanitation, poor economic situation, improper construction of the houses, living with wild animals or domestic. And that the loss of Zn increases the risk of disease LT, but not to infection by Leishmania spp. Thus a control strategy for the region would be better to evaluate outbreaks of domestic transmission and peridomestic, deploying an environmental management system ( know the sand flies species, and habits of the vector, prevent accumulation of trash and debris that may attract rodents, small mammals, and act as breeding grounds for insects).
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Woodside, Jayne Valerie. « Micronutrients in hyperhomocysteinaemia and cardiovascular risk ». Thesis, Queen's University Belfast, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388099.

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Gutierrez, Rodriguez Miriam Nicole. « Evaluation of secondary and micronutrients in Kansas ». Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/32633.

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Master of Science
Department of Agronomy
Dorivar Ruiz Diaz
The limitation of an essential nutrient for plant growth can affect crop yield. Research has been focused mainly on macronutrients, nevertheless micronutrients are equally important. This thesis is divided into three studies, which had the purpose of assessing frequent questions that producers have about micronutrient fertilizers and their effect on several crops in Kansas. The objective of the first study was to summarize and analyze results from studies since 1962 until 2015 to verify responses to zinc (Zn) and sulfur (S) fertilization in corn (Zea mays), sorghum (Sorghum bicolor (L.) Moench), wheat (Triticum aestivum) and soybean (Glycine max (L.) Merr). The treatments evaluated consisted of fertilizer Zn or S application versus their respective unfertilized treatments. Zinc fertilization significantly increased corn yield; no significant response was found for sorghum, wheat and soybean. Sulfur fertilization did not increase yields on corn and wheat. The objectives of the second study were: (i) to evaluate soybean response to S and micronutrients boron (B), copper (Cu), manganese (Mn), and Zn fertilizer application and to assess soil test and soybean seed and tissue nutrient concentration with fertilization. Treatments consisted of an unfertilized control, micronutrient fertilizer as individual nutrient for B, Cu, Mn, S and Zn applied broadcast pre-plant, in addition to a blend of these nutrients using two different placements (broadcast and band). Secondary and micronutrient fertilization showed no significant effect on soybean yield at any of the ten locations. Zinc fertilization showed significant effects on soybean tissue and seed Zn concentration. The objective of the third study was to evaluate soybean tissue nutrient response to micronutrient fertilizers in field strips with high variability in soil properties in the area evaluated. The study consisted of two strips (with and without fertilizer) and replicated three times. The treatment with fertilizer included a blend of Cu, Mn and Zn at a rate of 11.2 kg ha⁻¹ and B at a rate of 2.8 kg ha⁻¹. Initial soil tests B, Cu, Mn and Zn were not good indicators of soybean tissue response. Within-field variability of soybean Zn and B tissue content were affected by soil pH and organic matter; and these factors may be used to help explain field variability in plant availability. The micronutrient blend treatment showed higher tissue Zn and B values compared to the control. When pH ranged from 5.5 to 7.6, B in soybean tissue was higher on the control than the micronutrient blend treatment. Copper concentration in soybean tissue did not show significant difference between treatments at any location, regardless of pH and organic matter levels.
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Marcandalli, Luiz Henrique. « Efeito residual de elementos potencialmente tóxicos oriundos de fertilizantes : qualidade dos produtos agrícolas ». Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/64/64134/tde-17042014-092013/.

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Devido à presença de contaminantes (Elementos Potencialmente Tóxicos - EPT) nos fertilizantes, seja pelo material de origem das rochas fosfatadas ou pelo uso de subprodutos que contém altos teores de metais pesados, tem provocado muita polêmica e discussões. O conhecimento das frações dos elementos no solo pode indicar na disponibilidade dos mesmos para as plantas e, por fim, subsidiar as práticas de adubação de forma mais segura. O presente projeto teve como objetivo: (1) avaliar a produção de massa seca e determinar os teores de P, (Ni e Zn) e EPT (Cr, Cd, Pb) na parte comestível da alface (folhas) e do rabanete (raízes), em resposta a fertilização com fontes de fósforo e de zinco aplicadas em cultivo anterior (efeito residual); (2) avaliar o estado nutricional da alface e do rabanete em relação aos nutrientes P e Zn sob efeito da fertilização com fontes de fósforo e de zinco aplicadas em cultivo anterior (efeito residual); (3) determinar os teores residuais disponíveis de P (resina), micronutrientes (Ni, Zn) e EPT (Cr, Cd, Pb) extraídos por Mehlich-1, DTPA, CaCl2 0,01 mol L-1 e solução de ácidos orgânicos, em dois solos fertilizados com fontes de fósforo e de zinco após cultivo de alface e de rabanete. Serão desenvolvidos os cultivos residuais com as culturas da alface e rabanete em casa de vegetação, utilizando dois solos contrastantes quanto ao teor de argila. Os tratamentos foram aplicados por ocasião do cultivo do arroz de terras altas e, assim, serão realizadas apenas adubações de base e cobertura. Os tratamentos são assim constituídos: três fontes de Zn (subproduto, fertilizante comercial obtido da acidulação do subproduto e uma mistura de reagentes pró-análise) e três fontes de P (rocha fosfática de Togo, superfosfato simples obtido pela acidulação da rocha de Togo e uma mistura de reagentes pró-análise) em doses equivalentes a 0; 2,5; 5; 10 e 20 vezes a dose recomendada (em média, 4 kg de Zn e 90 kg de P2O5 por ha). Após as analises realizadas no solo com os diferentes extratores e as analises de folhas (alface) e raízes (rabanete) para determinarmos os níveis de elementos potencialmente tóxicos presentes no solo e partes comestíveis pode-se concluir que os teores no solo de fósforo e zinco aumentaram com o uso de doses crescente desses elementos no Latossolo Vermelho-Amarelo (LVA) e Latossolo Vermelho (LV);o uso dos extratores solução de ácidos orgânicos, mehlich-1 e DTPA, determinaram uma maior disponibilidade dos metais no solo;as doses crescentes de fósforo elevaram os teores de cádmio disponível no solo, porém esse aumento não apresentou diferenças significativas nas partes comestíveis;o uso de diferentes fontes e doses de fósforo e zinco não apresentaram diferenças significativas na produção de material vegetal das culturas;as doses de zinco elevaram os teores de chumbo disponível no solo, porém esse aumento não foi observado nas partes comestíveis das culturas;o crômio não foi alterado com as diferentes doses dos fertilizantes
Due to the presence of contaminants (Potentially Toxic Elements - EPT) in fertilizers, is the source material of PRs or the use of products which contain high levels of heavy metals, has caused much controversy and discussion. The knowledge of the fractions of the elements in the soil can indicate the availability thereof to the plants and finally subsidize fertilizer practice in a safer way. This project aimed to: (1) evaluate the dry matter production and determine the levels of P (Ni and Zn) and EPT (Cr, Cd, Pb) in the edible portion of the lettuce (leaves) and radish (roots ) in response to fertilization with phosphorus sources and zinc applied in previous crop (residual effect), (2) assess the nutritional status of lettuce and radish in relation to nutrients P and Zn fertilization under the effect of phosphorus sources and Zinc applied in previous crop (residual effect): (3) determining the residue content of available P (resin), trace elements (Ni, Zn) and EFA (Cr, Cd, Pb) extracted by Mehlich-1, DTPA, CaCl2 0 , 01 mol L-1 solution and organic acids in soils fertilized with phosphorus sources and zinc after growing lettuce and radish. Residual crops are developed with the lettuce and radishes in a greenhouse using two contrasting soils as the clay content. Treatments were applied during the cultivation of upland rice and thus will be conducted only fertilizers and basic coverage. Treatments are divided as follows: three sources of Zn (byproduct, commercial fertilizer obtained from acidulation by product and a mixture of reagents for analysis) and three sources of P (phosphate rock from Togo, superphosphate obtained by acidulation of rock and Togo a mixture of reagents for analysis) at doses of 0, 2.5, 5, 10 and 20 times the recommended dose (average of 4 kg Zn and 90 kg P2O5 per ha). The analyzes carried out on the ground with different extractants and analysis of leaves (lettuce) and roots (radish) to determine the levels of potentially toxic elements present in the soil and edible parts can be concluded that the levels of phosphorous in soil and zinc increased with increasing doses of the use of these elements in the Oxisol (LVA) and Oxisol (LV), the use of organic acid solution extractants, Mehlich-1 and DTPA, led to an increased availability of metals in soil; doses increasing phosphorus elevated levels of cadmium in the soil available, but this increase did not show significant differences in the edible parts, the use of different sources and levels of phosphorus and zinc showed no significant differences in the production of plant material cultures; doses of zinc elevated levels of lead in the soil available, however this increase was not observed in the edible parts of crops, chromium has not changed with the different fertilizer levels
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Trevisan, Nicole Patricia Odenheimer. « Avaliação de duas estratégias de acompanhamento nutricional e seu impacto na composição da dieta de pacientes com diabetes mellitus gestacional ». Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/5/5139/tde-23092015-111821/.

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Objetivo: O presente estudo teve por objetivo comparar duas estratégias de acompanhamento nutricional em pacientes com Diabetes Mellitus Gestacional em relação à composição da dieta dessas pacientes. Método: Durante o período de Julho de 2012 a Fevereiro de 2014, foram acompanhadas 55 gestantes no setor de Endocrinopatias e Gestação da Clínica Obstétrica do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP). Os critérios de inclusão foram: diagnóstico de DMG e idade gestacional inferior a 35 semanas na primeira avaliação nutricional. Foram excluídas as gestantes que não compareceram às consultas pré-estabelecidas (Grupo 1: duas avaliações; Grupo 2: quatro avaliações). As pacientes foram randomizadas em dois grupos: Grupo 1 (avaliação inicial e avaliação final) e Grupo 2 (avaliação inicial, orientação individualizada em mais dois encontros com intervalo de sete a quinze dias e avaliação final). Para avaliação do consumo inicial e final de nutrientes, bem como para nortear as orientação individualizadas (Grupo 2) utilizou-se o recordatório alimentar de 24h, seguido de análise no programa Nutrilife 8.0 ®. Na avaliação inicial, os dois grupos receberam orientação nutricional padrão. Para comparação entre os grupos, utilizou-se teste de qui-quadrado, exato de Fisher e teste de Mann-Whitney U. Resultados: Os dois grupos foram semelhantes em relação à ingestão de Macro e Micronutrientes na avaliação inicial. Na avaliação final, houve diferença estatisticamente significativa entre os grupos no que se refere ao consumo de carboidratos, lipídios e sódio. No Grupo 2, o consumo de carboidratos foi maior, e o de sódio e lipídios foi menor em comparação ao Grupo 1. Conclusões: A orientação individualizada, mesmo que avaliada em curto período de tempo, foi capaz de promover modificações no comportamento alimentar das gestantes em relação ao consumo de carboidratos, lipídios e sódio
Objective: The current study aimed the comparison of two strategies of nutrition monitoring of patients with Gestational Diabetes Mellitus compared to the diet composition of these patients. Method: From July 2012 to February, 2014, 55 pregnant women were monitored at the Endocrinopathy and Pregnancy Sector of the Obstetrics Clinic at Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP). The inclusion criterion was: GDM diagnosed and gestational age under 35 weeks at the first nutrition assessment. Pregnant women who attend the pre-established appointments (Group 1: two assessments; Group 2: four assessments) were removed. The patients were randomized into two groups: Group 1 (initial review and final review) and Group 2 (initial review, individual guidance in two appointments with a seven to fifteen day interval and final review). In order to assess the ideal initial and final consumption of nutrients, as well as to direct the individual guidance (Group 2), the 24h alimentary record was used, followed by the assessment on the Nutrilife 8.0® program. At the initial review, both groups received the standard nutritional guidance. In order to compare the two groups, a Chi-Square analysis, Fishers exact test and a Mann-Whitney U. test were performed. Results: the two groups were similar regarding the Macro and Micronutrients at the initial review. At the final review, there was a statistically significant difference between the groups with regards to the consumption of carbohydrates, lipids and sodium. In Group 2, there was a higher consumption of carbohydrates and the consumption of sodium and lipids was lower than in Group 1. Conclusions: The individual guidance, even if assessed in a short period of time, was capable of promoting changes in the alimentation behavior of the pregnant women with regards to the consumption of carbohydrates, lipids and sodium
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Ciudad, Reynaud Antonio. « Requerimiento de micronutrientes y oligoelementos ». Sociedad Peruana de Obstetricia y Ginecología - SPOG, 2014. http://hdl.handle.net/10757/324130.

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A brief evidence-based account on the importance of micronutrients and oligoelements in the diet during pregnancy and post-partum is done. An integral approach on nutrition must be given to women during reproductive life as well as before pregnancy. Micronutrient deficiencies have been associated with fetal structural defects risks. Micronutrient supplementation during pregnancy has shown to be effective in the prevention of different health problems including low birth weight, small for gestational age, and birth defects including neural, cardiovascular, cleft palate and abnormalities of the urinary tract. There is no evidence of protection against genetic problems type Down syndrome, or in reduction of perinatal mortality.
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Livres sur le sujet "And micronutrients"

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Aftab, Tariq, et Khalid Rehman Hakeem, dir. Plant Micronutrients. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49856-6.

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Mortvedt, J. J., dir. Micronutrients in Agriculture. Madison, WI, USA : Soil Science Society of America, 1991. http://dx.doi.org/10.2136/sssabookser4.2ed.

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Berdanier, Carolyn D. Advanced nutrition : Micronutrients. Boca Raton : CRC, 1998.

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J, Mortvedt J., dir. Micronutrients in agriculture. 2e éd. Madison, Wis., USA : Soil Science Society of America, 1991.

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Pharmacology of micronutrients. New York : A.R. Liss, 1988.

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Raje, L. Micronutrients and pregnancy outcome. Mumbai : University Department of Food Science and Nutrition, S.N.D.T. Women's University, 2006.

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Khattak, Jehangir Khan. Micronutrients in Pakistan agriculture. Islamabad : Pakistan Agricultural Research Council, 1995.

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Takumi, Yoshida, dir. Micronutrients and health research. New York : Nova Biomedical Books, 2008.

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Lester, Packer, dir. Micronutrients and brain health. Boca Raton : Taylor & Francis, 2009.

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Adrianne, Bendich, New York Academy of Sciences., United States-Japan Cooperative Medical Science Program. Malnutrition Panel. et National Institute of Diabetes and Digestive and Kidney Diseases (U.S.), dir. Micronutrients and immune functions. New York, N.Y : New York Academy of Sciences, 1990.

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Chapitres de livres sur le sujet "And micronutrients"

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Moren, Mari, Rune Waagbø et Kristin Hamre. « Micronutrients ». Dans Larval Fish Nutrition, 117–49. Oxford, UK : Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470959862.ch4.

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Teasdale, R. D. « Micronutrients ». Dans Cell and Tissue Culture in Forestry, 17–49. Dordrecht : Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-017-0994-1_3.

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Quigg, Antonietta. « Micronutrients ». Dans The Physiology of Microalgae, 211–31. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-24945-2_10.

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Deakin, Vicki. « Micronutrients ». Dans Sport and Exercise Nutrition, 66–88. Oxford, UK : Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9781444344905.ch8.

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Amils, Ricardo. « Micronutrients ». Dans Encyclopedia of Astrobiology, 1. Berlin, Heidelberg : Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_991-2.

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Chakrabarty, Kaveri, et A. S. Chakrabarty. « Micronutrients ». Dans Textbook of Nutrition in Health and Disease, 75–122. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0962-9_4.

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Amils, Ricardo. « Micronutrients ». Dans Encyclopedia of Astrobiology, 1585–86. Berlin, Heidelberg : Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_991.

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Volpe, Stella Lucia. « Micronutrients ». Dans Encyclopedia of Exercise Medicine in Health and Disease, 580–82. Berlin, Heidelberg : Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-29807-6_247.

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Amils, Ricardo. « Micronutrients ». Dans Encyclopedia of Astrobiology, 1060–61. Berlin, Heidelberg : Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_991.

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Flores Montes, Manuel. « Micronutrients ». Dans Encyclopedia of Estuaries, 437–38. Dordrecht : Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-8801-4_170.

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Actes de conférences sur le sujet "And micronutrients"

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Hartzler, Bob. « Glyphosate interactions with micronutrients and plant diseases ». Dans Proceedings of the 21st Annual Integrated Crop Management Conference. Iowa State University, Digital Press, 2010. http://dx.doi.org/10.31274/icm-180809-44.

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Mallarino, Antonio P., Joshua T. Enderson et Mazhar U. Haq. « Corn and soybean yield responses to micronutrients fertilization ». Dans Proceedings of the 24th Annual Integrated Crop Management Conference. Iowa State University, Digital Press, 2014. http://dx.doi.org/10.31274/icm-180809-157.

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Patokar, Arun M., et Vinaya Vijay Gohokar. « Automatic Investigation of Micronutrients and fertilizer dispense System using Microcontroller ». Dans 2018 International Conference on Recent Innovations in Electrical, Electronics & Communication Engineering (ICRIEECE). IEEE, 2018. http://dx.doi.org/10.1109/icrieece44171.2018.9008500.

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Santos, O. S. N., A. Kiperstok, L. M. Queiroz, M. B. Teixeira, H. R. Gheyi et C. S. Linge. « Irrigation of Bermuda Grass with Human Urine : Use of Micronutrients ». Dans II Inovagri International Meeting. Fortaleza, Ceará, Brasil : INOVAGRI/INCT-EI/INCTSal, 2014. http://dx.doi.org/10.12702/ii.inovagri.2014-a691.

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Rehm, George. « What's New with Micronutrients in Our Part of the World ? » Dans Proceedings of the 16th Annual Integrated Crop Management Conference. Iowa State University, Digital Press, 2006. http://dx.doi.org/10.31274/icm-180809-860.

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Barakova, N. V., M. A. Chelombitkin et E. S. Sergacheva. « Methodology for the development of functional foods enriched with micronutrients ». Dans ACTUAL PROBLEMS OF ORGANIC CHEMISTRY AND BIOTECHNOLOGY (OCBT2020) : Proceedings of the International Scientific Conference. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0070151.

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Pshenichny, R. N., E. B. Drepa, E. L. Golosnaya et D. O. Kalmykova. « THE EFFECT OF BIOLOGICS AND MICRONUTRIENTS ON THE PRODUCTIVITY OF WINTER WHEAT ». Dans Agrobiotechnology-2021. Publishing house of RGAU - MSHA, 2021. http://dx.doi.org/10.26897/978-5-9675-1855-3-2021-44.

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The research was carried out in order to study the effect of the use of biological preparations and micronutrients (separately and in combination with each other) on the growth and development of winter wheat grown according to the sunflower precursor in the zone of unstable moisture. The experience was laid in 2020-2021 on leached chernozem. Two factors were studied in the experiment: drugs and the timing of their use. The classical technology of winter wheat cultivation adopted for the zone was used as a control. The scheme of the experiment included options with the use of biological preparations, micro-fertilizers separately and in combination with each other when etching seeds and during the growing season of winter wheat. The combined use of biological preparations and micronutrients provides an increase in yield by 10.2%, whereas with a separate application the increase was 4.5-5.7%.
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Rahayu, Yp, et Sismeri Dona. « A Review : Giving Micronutrients Intervention Zink For The Prevention Of Stunting ». Dans Proceedings of the First National Seminar Universitas Sari Mulia, NS-UNISM 2019, 23rd November 2019, Banjarmasin, South Kalimantan, Indonesia. EAI, 2020. http://dx.doi.org/10.4108/eai.23-11-2019.2298368.

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Belov, Andrei, Vladimir Shakhov, Yuriy Ushakov et Aleksandar Putrin. « Development of equipment for producing feed mixtures with nanoparticles of scarce micronutrients ». Dans 19th International Scientific Conference Engineering for Rural Development. Latvia University of Life Sciences and Technologies, Faculty of Engineering, 2020. http://dx.doi.org/10.22616/erdev.2020.19.tf469.

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Rahimi, Mohammad Mehdi, Mehrab Yadegari, Amir Aeinehband, Kamel Ariffin Mohd Atan et Isthrinayagy S. Krishnarajah. « Effect of Micronutrients on Quality and Quantity Characteristics Two Varieties of Sunflower ». Dans INTERNATIONAL CONFERENCE ON MATHEMATICAL BIOLOGY 2007 : ICMB07. AIP, 2008. http://dx.doi.org/10.1063/1.2883841.

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Rapports d'organisations sur le sujet "And micronutrients"

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Duewer, David L., Margaret C. Kline, William A. MacCrehan, Willie E. May, Robert C. Paule, Reenie Parris, Robert Schaffer et Jeanice B. Thomas. NIST micronutrients measurement quality assurance program :. Gaithersburg, MD : National Institute of Standards and Technology, février 2019. http://dx.doi.org/10.6028/nist.ir.7880-39.

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Mallarino, Antonio P., Ryan R. Oltmans et Vincent Lawson. Corn and Soybean Response to Micronutrients. Ames : Iowa State University, Digital Repository, 2014. http://dx.doi.org/10.31274/farmprogressreports-180814-159.

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Duewer, David L. NIST Micronutrients Measurement Quality Assurance Program :. Gaithersburg, MD : National Institute of Standards and Technology, 2022. http://dx.doi.org/10.6028/nist.ir.7880-50.

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Mallarino, Antonio, Joshua Enderson, Ryan Oltmans, Mazhar Haq et Josh Sievers. Corn and Soybean Yield Response to Micronutrients. Ames : Iowa State University, Digital Repository, 2015. http://dx.doi.org/10.31274/farmprogressreports-180814-1761.

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Sharpless, Katherine E., Jeanice M. Brown Thomas et David L. Duewer. NIST Micronutrients Measurement Quality Assurance Program Analysis Tutorial. National Institute of Standards and Technology, septembre 2016. http://dx.doi.org/10.6028/nist.ir.7880-40.

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Prasad, Kedar. Antioxidant Micronutrients : Therapeutic Counter Measures for Chemical Agents. Fort Belvoir, VA : Defense Technical Information Center, mars 2011. http://dx.doi.org/10.21236/ada554277.

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Duewer, David L., Jeanice B. Thomas et Dennis Camell. NIST Micronutrients Measurement Quality Assurance Program Winter 2012 Comparability Studies :. Gaithersburg, MD : National Institute of Standards and Technology, décembre 2012. http://dx.doi.org/10.6028/nist.ir.7880.

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Mallarino, Antonio, Mazhar Haq, Joshua Enderson, Ryan Oltmans et Micah Smidt. Corn and Soybean Yield Response to Micronutrients in Northern Iowa. Ames : Iowa State University, Digital Repository, 2015. http://dx.doi.org/10.31274/farmprogressreports-180814-1138.

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Mallarino, Antonio, Mazhar Haq, Joshua Enderson, Ryan Oltmans et Mike Fiscus. Corn and Soybean Yield Response to Micronutrients in Central Iowa. Ames : Iowa State University, Digital Repository, 2015. http://dx.doi.org/10.31274/farmprogressreports-180814-1788.

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Mallarino, Antonio, Mazhar Haq, Joshua Enderson, Ryan Oltmans et Kenneth Pecinovsky. Corn and Soybean Yield Response to Micronutrients in Northeast Iowa. Ames : Iowa State University, Digital Repository, 2015. http://dx.doi.org/10.31274/farmprogressreports-180814-2544.

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