Academic literature on the topic 'Ecology of plant nutrition'

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Journal articles on the topic "Ecology of plant nutrition"

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Rorison, I. H., A. Lauchli, and R. L. Bieleski. "Inorganic Plant Nutrition." Journal of Ecology 73, no. 3 (November 1985): 1070. http://dx.doi.org/10.2307/2260174.

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Wilkins, D. A., N. El Bassam, M. Danbroth, and B. C. Loughman. "Genetic Aspects of Plant Mineral Nutrition." Journal of Applied Ecology 28, no. 2 (August 1991): 745. http://dx.doi.org/10.2307/2404582.

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Sprent, J. I., P. A. Porter, and D. W. Lawlor. "Plant Growth: Interactions with Nutrition and Environment." Journal of Applied Ecology 29, no. 2 (1992): 545. http://dx.doi.org/10.2307/2404531.

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Noordwijk, M. van, and P. de Willigen. "Quantitative root ecology as element of soil fertility theory." Netherlands Journal of Agricultural Science 34, no. 3 (August 1, 1986): 273–81. http://dx.doi.org/10.18174/njas.v34i3.16781.

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Nutrient use efficiency with special reference to the soil/plant system, soil fertility theory relating to fertilizers, plant nutrition, soil properties and root ecology and aspects of quantitative root ecology are considered and an approach to modelling the relation of root ecology to soil fertility theory is outlined. (Abstract retrieved from CAB Abstracts by CABI’s permission)
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Ågren, Göran I. "Stoichiometry and Nutrition of Plant Growth in Natural Communities." Annual Review of Ecology, Evolution, and Systematics 39, no. 1 (December 2008): 153–70. http://dx.doi.org/10.1146/annurev.ecolsys.39.110707.173515.

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Feng, Jingyu, Zhe Huang, Yongbin Zhang, Wenjing Rui, Xihong Lei, and Zhifang Li. "Beneficial Effects of the Five Isolates of Funneliformis mosseae on the Tomato Plants Were Not Related to Their Evolutionary Distances of SSU rDNA or PT1 Sequences in the Nutrition Solution Production." Plants 10, no. 9 (September 18, 2021): 1948. http://dx.doi.org/10.3390/plants10091948.

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The symbiosis and beneficial effects of arbuscular mycorrhizal fungi (AM fungi) on plants have been widely reported; however, the effects might be unascertained in tomato industry production with coconut coir due to the nutrition solution supply, or alternatively with isolate-specific. Five isolates of AM fungi were collected from soils of differing geographical origins, identified as Funneliformis mosseae and evidenced closing evolutionary distances with the covering of the small subunit (SSU) rDNA regions and Pi transporter gene (PT1) sequences. The effects of these isolates on the colonization rates, plant growth, yield, and nutrition uptake were analyzed in tomato nutrition solution production with growing seasons of spring–summer and autumn–winter. Our result indicated that with isolate-specific effects, irrespective of geographical or the SSU rDNA and PT1 sequences evolution distance, two isolates (A2 and NYN1) had the most yield benefits for plants of both growing seasons, one (E2) had weaker effects and the remaining two (A2 and T6) had varied seasonal-specific effects. Inoculation with effective isolates induced significant increases of 29.0–38.0% (isolate X5, T6) and 34.6–36.5% (isolate NYN1, T6) in the plant tissues respective nitrogen and phosphorus content; the plant biomass increased by 18.4–25.4% (isolate T6, NYN1), and yields increased by 8.8–12.0% (isolate NYN1, A2) compared with uninoculated plants. The maximum root biomass increased by 28.3% (isolate T6) and 55.1% (isolate E2) in the autumn–winter and spring–summer growing seasons, respectively. This strong effect on root biomass was even more significant in an industry culture with a small volume of substrate per plant. Our results reveal the potential benefits of using selected effective isolates as a renewable resource that can overcome the suppressing effects of sufficient nutrient availability on colonization rates, while increasing the yields of industrially produced tomatoes in nutrition solution with coconut coir.
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Shirley, Matt, Laure Avoscan, Eric Bernaud, Gérard Vansuyt, and Philippe Lemanceau. "Comparison of iron acquisition from Fe–pyoverdine by strategy I and strategy II plants." Botany 89, no. 10 (October 2011): 731–35. http://dx.doi.org/10.1139/b11-054.

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Iron is an essential micronutrient for plants and associated microorganisms. However, the bioavailability of iron in cultivated soils is low. Plants and microorganisms have thus evolved active strategies of iron uptake. Two different iron uptake strategies have been described in dicotyledonous and monocotyledonous graminaceous species. In bacteria, this strategy relies on the synthesis of siderophores. Pyoverdines, a major class of siderophores produced by fluorescent pseudomonads, were previously shown to promote iron nutrition of the dicotyledonous species Arabidopsis thaliana L. (Heynh.), whereas contradictory reports were made on the contribution of those siderophores to the nutrition of graminaceous annuals. Furthermore, no information has so far been available on graminaceous perennials. Here, the contribution of purified pyoverdine of Pseudomonas fluorescens C7R12 to the iron nutrition of two annual and perennial graminaceous plants was assessed and compared with that of two dicotyledonous plant species. Fe–Pyoverdine promoted the iron status of all plant species tested. With the exception of wheat, this promotion was more dramatic in graminaceous species than in dicotyledonous species and was the highest in fescue, a perennial species. The incorporation of 15N-labeled pyoverdine was consistent with the effect on the iron status of the plants tested.
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Biswas, Margaret R. "Energy in plant nutrition and pest control." Agriculture, Ecosystems & Environment 30, no. 1-2 (January 1990): 161–62. http://dx.doi.org/10.1016/0167-8809(90)90204-q.

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Pozo de la Hoz, Judith, Javier Rivero, Concepción Azcón-Aguilar, Miguel Urrestarazu, and María J. Pozo. "Mycorrhiza-Induced Resistance against Foliar Pathogens Is Uncoupled of Nutritional Effects under Different Light Intensities." Journal of Fungi 7, no. 6 (May 21, 2021): 402. http://dx.doi.org/10.3390/jof7060402.

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The use of microbial inoculants, particularly arbuscular mycorrhizal fungi, has great potential for sustainable crop management, which aims to reduce the use of chemical fertilizers and pesticides. However, one of the major challenges of their use in agriculture is the variability of the inoculation effects in the field, partly because of the varying environmental conditions. Light intensity and quality affect plant growth and defense, but little is known about their impacts on the benefits of mycorrhizal symbioses. We tested the effects of five different light intensities on plant nutrition and resistance to the necrotrophic foliar pathogen Botrytis cinerea in mycorrhizal and non-mycorrhizal lettuce plants. Our results evidence that mycorrhiza establishment is strongly influenced by light intensity, both regarding the extension of root colonization and the abundance of fungal vesicles within the roots. Light intensity also had significant effects on plant growth, nutrient content, and resistance to the pathogen. The effect of the mycorrhizal symbiosis on plant growth and nutrient content depended on the light intensity, and mycorrhiza efficiently reduced disease incidence and severity under all light intensities. Thus, mycorrhiza-induced resistance can be uncoupled from mycorrhizal effects on plant nutrition. Therefore, mycorrhizal symbioses can be beneficial by providing biotic stress protection even in the absence of nutritional or growth benefits.
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Bonhomme, Vincent, Isabelle Gounand, Christine Alaux, Emmanuelle Jousselin, Daniel Barthélémy, and Laurence Gaume. "The plant-ant Camponotus schmitzi helps its carnivorous host-plant Nepenthes bicalcarata to catch its prey." Journal of Tropical Ecology 27, no. 1 (December 17, 2010): 15–24. http://dx.doi.org/10.1017/s0266467410000532.

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Abstract:The Bornean climber, Nepenthes bicalcarata, is unique among plants because it is both carnivorous and myrmecophytic, bearing pitcher-shaped leaves and the ant Camponotus schmitzi within tendrils. We explored, in the peat swamp forests of Brunei, the hypothesis that these ants contribute to plant nutrition by catching and digesting its prey. We first tested whether ants increased plant's capture rate. We found that unlike most plant-ants, C. schmitzi do not exhibit dissuasive leaf-patrolling behaviour (zero patrol on 67 pitchers of 10 plants) but lie concealed under pitcher rim (13 ± 6 ants per pitcher) allowing numerous insect visits. However, 47 out of 50 individuals of the largest visitor dropped into the pitchers of five plants were attacked by ants and the capture rate of the same pitchers deprived of their ambush hunting ants decreased three-fold. We then tested whether ants participated in plant's digestion. We showed in a 15-d long experiment that ants fed on prey and returned it in pieces in seven out of eight pitchers. The 40 prey deposited in ant-deprived pitchers remained intact indicating a weak digestive power of the fluid confirmed to be only weakly acidic (pH ~5, n = 67). The analysis of 10 pitcher contents revealed that prey, mainly ants and termites, was very numerous (~400 per pitcher per plant) and highly fragmented. Altogether, these data suggest a positive effect of C. schmitzi on both prey intake and breakdown. This ant–plant interaction could thus be a nutritional mutualism involving the unusual association of carnivory and myrmecotrophy.
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Dissertations / Theses on the topic "Ecology of plant nutrition"

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Mariot, E. J. "The nutritional ecology of Lupinus albus L. with special reference to phosphorus." Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370288.

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Moorby, H. "Environmental conditions affecting acid-base changes around plant roots." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375279.

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Wan, Hon Chi Judy. "Interaction of earthworms and microorganisms on nutrient availability and crop growth." HKBU Institutional Repository, 2004. http://repository.hkbu.edu.hk/etd_ra/588.

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Knecht, Billberger Magnus F. "Plant growth - stoichiometry and competition : theory development in ecosystem ecology /." Uppsala : Dept. of Ecology and Environmental Research, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200624.pdf.

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Morris, Michael Roger. "The contribution of spawning pacific-salmon to nitrogen fertility and vegetation nutrition during riparian primary succession on an expansive floodplain of a large river." Diss., [Missoula, Mont.] : The University of Montana, 2008. http://etd.lib.umt.edu/theses/available/etd-09302008-151352/.

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Coyle, Kieran. "An investigation of the role of soil micro-organisms in phosphorus mobilisation : a report submitted to fulfil the requrements of the degree of Doctor of Philosophy." Title page, table of contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phc8814.pdf.

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Martinod, Kylie. "Importance of an invasive shrub, Lonicera maackii, in the diet of white-tailed deer: nutritional quality and browse rates." Miami University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=miami1470059937.

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Kroehler, Carolyn J. "The role of acid phosphatases in the phosphorus nutrition of arctic tundra plants." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/80295.

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The acid phosphomonoesterase activity associated with two major rooting strategies in arctic tundra plants was examined: that of Eriophorum vagina tum, a dominant plant in tussock tundra ecosystems, with its predominantly non-mycorrhizal root system; and that of ectomycorrhizal roots. Eriophorum has phosphatase activity which is evenly distributed along its root surface, has a pH optimum at soil pH (3.5-4.0), and continues at substantial rates at 1 °C. Inorganic phosphorus inhibits activity only 7 to 19%. In addition, Eriophorum has phosphatase activity associated with all the "below-ground" components of its tussock growth form: dead roots, leaf sheaths, and soil. Plants with higher tissue phosphorus growing in soils with higher available phosphate in general had higher live and dead root, leaf sheath, and soil phosphatase activity in both natural and manipulated sites of higher plant productivity. Yearly and seasonal variation sometimes exceeded differences among treatments, suggesting that enzyme activity would not provide a reliable measure of plant or soil phosphorus levels. Experiments with radiolabeled inositol hexaphosphate showed that Eriophorum is able to hydrolyze and absorb inorganic phosphate from an organic phosphate source. A comparison of enzyme hydrolysis rates with inorganic phosphate assimilation rates indicates that organic phosphate hydrolysis may occur as rapidly as inorganic phosphate absorption. Inorganic phosphate released by root surface phosphatase activity could satisfy approximately 65% of the annual phosphate demand of Eriophorum. Phosphatases of two ectomycorrhizal fungi (Cenococcum geophilum and Entoloma sericeum) responded similarly to growth in axenic culture at 2 or 50 micromolar KH₂PO₄ or sodium inositol hexaphosphate: surface Vmax estimates were significantly greater for 2 micromolar- than for 50 micromolar-grown isolates. The presence of constitutive extracellular soluble phosphatase activity resulted in the appearance of inorganic phosphate in media initially supplied only with organic phosphate. The surface acid phosphatase activity of field-collected ectomycorrhizal roots of arctic Salix and Betula, however, did not respond in a consistent way to differences in soil characteristics. Activity differed more among "color types" or fungal types than among sites of different soil characteristics.
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Ko, Wai-ping Ice, and 高惠冰. "The nutritional ecology of frugivorous birds in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31238683.

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Pienaar, Ryno Cuyler. "The feeding ecology of extralimital Nyala (Tragelaphus Angasii) in the Arid Mosaic thicket of the Southern Cape." Thesis, Nelson Mandela Metropolitan University, 2013. http://hdl.handle.net/10948/d1021012.

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The nyala on Buffelsdrift Private Game Reserve were found to be mainly browsers and made little use of grass during the study period. Browse contributed 87.8 percent to the annual diet, while grass contributed 12.2 percent. Only six species formed > 5 percent of the annual diet. Of these six only three species formed > 10 percent. They are the shrubs Acacia karroo, Pappea capensis and Grewia robusta. These were followed by the shrub Portulacaria afra, the dwarf shrub Zygophyllum lichtensteinianum and the grass Cynodon dactylon all contributing between 5 - 10 percent. There were definite seasonal dietary shifts with preference to different plant species. The shift takes place between the wet seasons (winter and spring) and the dry season (summer). Herbaceous species such as Cynodon dactylon and Erharta calycina were favoured in the winter/wet season. Shrubs such as P. capensis, P. afra and dwarf shrubs such as Limeum aethiopicum and Z. lichtensteinianum were favoured during the spring/wet and summer/dry seasons. Nyala habitat use in BPGR differed significantly from expected use when taking the relative area of habitats into consideration. However nyala did not display signififcantly different habitat preferences between seasons. Male and female nyala displayed differences in foraging behaviour at the plant form, plant species and habitat scale. Males preferred a greater proportion of shrubs and females a greater proportion of dwarf shrubs. Males preferred the shrubs Pappea capensis and Portulacaria afra the most and females preferred the dwarf shrubs Limeum aethiopicum and Zygophyllum lichtensteinianum the most. Plant species site availability varied significantly between the sexes, indicating that males and females selected different feeding paths. The difference in their feeding strategy appears to be related to the selection of plants that best satisfy the nutrient requirements of each sex. These findings are in agreement with the results from earlier studies on nyala sexual dimorphism. At the habitat scale females selected more for open dwarf shrubland and males more for densely vegetated habitats. This appears to be as a result of males attempting to maximize their foraging opportunities by selecting areas that offer food in greater quantities. Nyala in BPGR appear to co-exist with kudu and eland through spatial resource partitioning. This is suggested to be due to the influence of body size-gut size relationships on forage selectivity.
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Books on the topic "Ecology of plant nutrition"

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Day, A. D. Plant nutrients in desert environments. Berlin: Springer-Verlag, 1992.

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Nutritional ecology of the ruminant: Ruminant metabolism, nutritional strategies, the cellulolytic fermentation and the chemistry of forages and plant fibers. Ithaca [N.Y.]: Comstock Pub. Associates, 1987.

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CEC/IUFRO Symposium--Nutrient Uptake and Cycling in Forest Ecosystems (1993 Halmstad, Sweden). Nutrient uptake and cycling in forest ecosystems: Proceedings of the CEC/IUFRO Symposium Nutrient Uptake and Cycling in Forest Ecosystems, Halmstad, Sweden, June, 7-10, 1993. Dordrecht: Kluwer Academic, 1995.

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Peterer, Roger. Ertragskundliche Untersuchungen von gedüngten Mähwiesen der subalpinen Stufe bei Davos =: A study of yield and nutritive value of fertilized meadows in the subalpine region near Davos, Switzerland. Zürich: Geobotanisches Institut der Eidg. Techn. Hochschule, Stiftung Rübel, 1985.

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Belton, Peter S. Pseudocereals and Less Common Cereals: Grain Properties and Utilization Potential. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002.

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Graf, Ulrich Hans. Zur Indikation von Bodennährstoffen in Streuwiesen: Vitalitätsmerkmale ausgewählter Arten und floristische Parameter als Nährstoffindikatoren in Streuwiesen des Zürcher Voralpengebietes = Indication of soil nutrients in litter meadows : vitality parameters of selected species and floristic parameters as indicators of soil nutrients in litter meadows in the pre-Alps of the canton of Zurich (northern Switzerland). [Zürich: Geobotanisches Institut der ETH, Stiftung Rübel], 1996.

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Ågren, Göran I. Theoretical ecosystem ecology: Understanding element cycles. Cambridge: Cambridge University Press, 1998.

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1903-, Leeper G. W., ed. Forest soils and nutrient cycles. Carlton, Vic: Melbourne University Press, 1987.

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Plant nutrition. Philadelphia: Chelsea House Publishers, 2006.

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Horst, W. J., M. K. Schenk, A. Bürkert, N. Claassen, H. Flessa, W. B. Frommer, H. Goldbach, et al., eds. Plant Nutrition. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/0-306-47624-x.

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Book chapters on the topic "Ecology of plant nutrition"

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Lambers, Hans, F. Stuart Chapin, and Thijs L. Pons. "Mineral Nutrition." In Plant Physiological Ecology, 239–98. New York, NY: Springer New York, 1998. http://dx.doi.org/10.1007/978-1-4757-2855-2_6.

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Lambers, Hans, F. Stuart Chapin, and Thijs L. Pons. "Mineral Nutrition." In Plant Physiological Ecology, 255–320. New York, NY: Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-78341-3_9.

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Lambers, Hans, and Rafael S. Oliveira. "Mineral Nutrition." In Plant Physiological Ecology, 301–84. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-29639-1_9.

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Denno, Robert F. "Herbivore Population Dynamics in Intertidal Marshlands: The Role of Host Plant Nutrition." In The Ecology and Management of Wetlands, 535–47. New York, NY: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4684-8378-9_44.

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Denno, Robert F. "Herbivore Population Dynamics in Intertidal Marshlands: The Role of Host Plant Nutrition." In The Ecology and Management of Wetlands, 535–47. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4684-7392-6_44.

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He, Honghua, David J. Eldridge, and Hans Lambers. "Mineral Nutrition of Plants in Australia’s Arid Zone." In On the Ecology of Australia’s Arid Zone, 77–102. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-93943-8_4.

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V�squez-Jim�nez, J., and D. P. Bartholomew. "Plant nutrition." In The pineapple: botany, production and uses, 175–202. Wallingford: CABI, 2018. http://dx.doi.org/10.1079/9781786393302.0175.

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Basuchaudhuri, P. "Plant Nutrition." In Physiology of Soybean Plant, 141–77. Boca Raton : CRC Press, [2020]: CRC Press, 2020. http://dx.doi.org/10.1201/9781003089124-6.

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Kilgour, O. F. G. "Plant Nutrition." In Work Out Biology for First Examinations, 57–72. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-18139-1_4.

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Chesworth, J. M., T. Stuchbury, and J. R. Scaife. "Plant Nutrition." In An Introduction to Agricultural Biochemistry, 359–66. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-009-1441-4_26.

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Conference papers on the topic "Ecology of plant nutrition"

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Bruulsema, Tom. "Plant nutrition science for sustaining public trust." In Proceedings of the 28th Annual Integrated Crop Management Conference. Iowa State University, Digital Press, 2017. http://dx.doi.org/10.31274/icm-180809-250.

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Vannette, Rachel L. "Mutualistic soil fungi and plant nutrition jointly influence plant-herbivore interactions." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.94331.

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DUMITRU, Mihail. "ORGANO-MINERAL FERTILIZERS - EQUILIBRIUM FACTOR IN PLANT NUTRITION." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/32/s13.054.

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"Nutrition diagnosis of maize plant based on spectroscopy." In 2014 ASABE Annual International Meeting. American Society of Agricultural and Biological Engineers, 2014. http://dx.doi.org/10.13031/aim.20141897251.

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Fardet, Anthony, Jean-François Martin, and Jean-Michel Chardigny. "Characterization of the lipotropic potential of plant-based foods." In Foods: Bioactives, Processing, Quality and Nutrition. Basel, Switzerland: MDPI, 2013. http://dx.doi.org/10.3390/bpqn2013-01164.

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Jankevica, Liga. "ELABORATION OF NEW ENVIRONMENTALLY FRIENDLY PLANT PROTECTION PRODUCT FROM CONIFEROUS TREES BIOMASS AGAINST PLANT DISEASES." In 13th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION. Stef92 Technology, 2013. http://dx.doi.org/10.5593/sgem2013/be5.v1/s20.047.

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Maillol, J. M., J. Ortega‐Ramírez, W. L. Bandy, and A. Valiente‐Banuet. "Electrical resistivity tomography: A new tool in plant ecology?" In SEG Technical Program Expanded Abstracts 2000. Society of Exploration Geophysicists, 2000. http://dx.doi.org/10.1190/1.1815654.

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Li, Ming-Feng, Jian-Qiang Zhu, and Zhen-Hui Jiang. "Plant Growth Regulators and Nutrition Applied to Cotton after Waterlogging." In 2013 Third International Conference on Intelligent System Design and Engineering Applications (ISDEA). IEEE, 2013. http://dx.doi.org/10.1109/isdea.2012.246.

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Tesarova, Blanka. "CONTENTS OF CADMIUM, COPPER AND LEAD IN PLANT BIOMASS WITHIN FORMER URANIUM PROCESSING PLANT AREA MAPE, CZECH REPUBLIC, MYDLOVARY." In 14th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgem2014/b52/s20.022.

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Pallini, Angelo. "Foodweb ecology of an invasive mite that manipulates plant defenses." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.105608.

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Reports on the topic "Ecology of plant nutrition"

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Carlson, Jake. Plant Nutrition and Growth - Purdue University. Purdue University Libraries, November 2009. http://dx.doi.org/10.5703/1288284315012.

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DelGuidice, Glenn D., Michael E. Nelson, and L. David Mech. Winter nutrition and population ecology of white-tailed deer in the central Superior National Forest. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station, 1991. http://dx.doi.org/10.2737/nc-gtr-147.

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Carlsen, T. M. Population and community ecology of the rare plant amsinckia grandiflora. Office of Scientific and Technical Information (OSTI), November 1996. http://dx.doi.org/10.2172/652959.

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Ahluwalia, A. Mineral nutrition and plant responses to elevated levels of atmospheric CO{sub 2}. Office of Scientific and Technical Information (OSTI), August 1996. http://dx.doi.org/10.2172/380351.

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Wade, Gary L., Jonathan A. Myers, Cecilia R. Martin, Kathie Detmar, William, III Mator, Mark J. Twery, and Mike Rechlin. Vascular Plant Species of the Forest Ecology Research and Demonstration Area, Paul Smith's, New York. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station, 2003. http://dx.doi.org/10.2737/ne-rn-380.

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McDonald, Philip M., and Gary O. Fiddler. Ecology and development of Douglas-fir seedlings and associated plant species in a Coast Range plantation. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station, 1999. http://dx.doi.org/10.2737/psw-rp-243.

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Johnson, Charles G., Rodrick R. Clausnitzer, Peter J. Mehringer, and Chadwick D. Oliver. Biotic and abiotic processes in eastside ecosystems: the effects of management on plant and community ecology and on stand and landscape vegetation dynamics. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1994. http://dx.doi.org/10.2737/pnw-gtr-322.

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8

Kennedy, Christina K. Final Report: The Rhizosphere Association of the Nitrogen Fixing Bacterial Species Azotobacter Paspali with the Tropical Grass Paspalum Notatum: Specificity of Colonization and Contribution to Plant Nutrition, July 1, 1995 - February 14, 1997. Office of Scientific and Technical Information (OSTI), February 1997. http://dx.doi.org/10.2172/765727.

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9

Nathan, Harms, and Cronin James. Variability in weed biological control : effects of foliar nitrogen on larval development and dispersal of the alligatorweed flea beetle, Agasicles hygrophila. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41886.

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Abstract:
Host quality can have dramatic effects on performance of biological control agents but its importance is understudied. We used a combination of field measurements and laboratory experiments to determine the range of foliar nitrogen (FN) that larvae of the alligatorweed flea beetle (Agasicles hygrophila) are exposed to in the field and its importance to larval development and dispersal. Seasonal variability in FN was assessed at field sites spanning southern to northern Louisiana every 2–3 weeks during the growing season for four years. In a series of laboratory experiments, alligatorweed FN was manipulated to examine its influence on larval development and survival (under different temperature regimes), adult biomass, and dispersal of the biological control agent, A. hygrophila. Foliar nitrogen and rearing temperature had strong independent effects on larval development rate. We demonstrated that increasing nitrogen in leaf tissues shortens larval A. hygrophila developmental time and increases survival to adulthood, regardless of exposure temperature during development. It also suggests that foliar nitrogen may have important effects on biological control of alligatorweed, particularly as a result of seasonal variation in temperature and plant nutrition at field sites and could contribute to observed variation in A. hygrophila efficacy in the field.
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Nachtrieb, Julie. Field site analysis of giant salvinia nitrogen content and salvinia weevil density. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/42060.

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In 2012, a giant salvinia (Salvinia molesta Mitchell) biological control project was initiated in Louisiana. Although similar quantities of salvinia weevils (Cyrtobagous salviniae Calder and Sands) were released at all sites, weevil densities were highly variable among sites. Additionally, signs of plant nitrogen depletion (yellowing plants) were observed at some sites. Because it is well known that plant nutrition can affect the success of a biocontrol agent because of slowed development and/or reduced fecundity, the correlation between giant salvinia nitrogen content and Salvinia weevil density was investigated during the growing seasons of the second and fourth years. During 2013, weevils were reintroduced to sites, and the magnitude of adult weevil density increase varied by site. Giant salvinia nitrogen content varied among sites and sampling dates. Upper Big Break plants had greater nitrogen than all other sites during 75% of sampling dates. Additionally, adult and larval densities were significantly correlated to plant nitrogen content. During 2015, trends were less distinct and weevil densities and nitrogen content varied based on the interaction between sampling date and site, but a significant correlation was not detected. Results from 1-yr of a 2-yr study confirmed published reports of the importance of plant nitrogen content to salvinia weevil productivity. Additional studies are warranted to evaluate and understand the role of nitrogen at giant salvinia biocontrol field sites.
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