Auswahl der wissenschaftlichen Literatur zum Thema „Agronomie – Diagnostic“
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Zeitschriftenartikel zum Thema "Agronomie – Diagnostic"
Byerlee, Derek, Bernard Triomphe und Michel Sebillotte. „Integrating Agronomic and Economic Perspectives into the Diagnostic Stage of On-farm Research“. Experimental Agriculture 27, Nr. 2 (April 1991): 95–114. http://dx.doi.org/10.1017/s0014479700018767.
Der volle Inhalt der QuelleSaeed, Muhammad, Zainab Jamil, Tayyab Shehzad, Syed Zia ul Hasan, Riffat Bibi, Safia Naureen Malik, Hafiz Matee-ur-Rehman und Raees Ahmed. „Role of Next Generation Sequencing (NGS) in Plant Disease Management: A Review“. Journal of Applied Research in Plant Sciences 4, Nr. 01 (23.02.2023): 512–17. http://dx.doi.org/10.38211/joarps.2023.04.01.61.
Der volle Inhalt der QuelleCossani, C. Mariano, und Victor O. Sadras. „Carbon isotope composition for agronomic diagnostic: Predicting yield and yield response to nitrogen in wheat“. Field Crops Research 279 (April 2022): 108451. http://dx.doi.org/10.1016/j.fcr.2022.108451.
Der volle Inhalt der QuelleCsorba, Ádám, Arwyn Jones, Tamás Szegi, Endre Dobos und Erika Michéli. „The diagnostic continua of the soils of Europe“. Hungarian Geographical Bulletin 71, Nr. 4 (21.12.2022): 313–23. http://dx.doi.org/10.15201/hungeobull.71.4.1.
Der volle Inhalt der QuelleLievens, Bart, und Bart P. H. J. Thomma. „Recent Developments in Pathogen Detection Arrays: Implications for Fungal Plant Pathogens and Use in Practice“. Phytopathology® 95, Nr. 12 (Dezember 2005): 1374–80. http://dx.doi.org/10.1094/phyto-95-1374.
Der volle Inhalt der QuelleEponon, Christophe, Didier Snoeck, Emmanuel Kassin, Jules Keli und Daouda Kone. „Diagnostic agronomique des pratiques culturales paysannes dans les vergers caféiers de Côte d'Ivoire“. Cahiers Agricultures 26, Nr. 4 (Juli 2017): 45007. http://dx.doi.org/10.1051/cagri/2017041.
Der volle Inhalt der QuellePark, Bongsoo, Frank Martin, David M. Geiser, Hye-Seon Kim, Michele A. Mansfield, Ekaterina Nikolaeva, Sook-Young Park et al. „Phytophthora Database 2.0: Update and Future Direction“. Phytopathology® 103, Nr. 12 (Dezember 2013): 1204–8. http://dx.doi.org/10.1094/phyto-01-13-0023-r.
Der volle Inhalt der QuellePavlova, O. I. „REMOVED CONTROL OF AGRICULTURAL ECOSYSTEMS“. Vegetable crops of Russia, Nr. 1 (30.03.2011): 59. http://dx.doi.org/10.18619/2072-9146-2011-1-59-59.
Der volle Inhalt der QuelleWithers, S., E. Gongora-Castillo, D. Gent, A. Thomas, P. S. Ojiambo und L. M. Quesada-Ocampo. „Using Next-Generation Sequencing to Develop Molecular Diagnostics for Pseudoperonospora cubensis, the Cucurbit Downy Mildew Pathogen“. Phytopathology® 106, Nr. 10 (Oktober 2016): 1105–16. http://dx.doi.org/10.1094/phyto-10-15-0260-fi.
Der volle Inhalt der QuelleEdwards, Robert, und Nawaporn Onkokesung. „Resisting resistance: new applications for molecular diagnostics in crop protection“. Biochemist 42, Nr. 4 (28.07.2020): 6–12. http://dx.doi.org/10.1042/bio20200040.
Der volle Inhalt der QuelleDissertationen zum Thema "Agronomie – Diagnostic"
Poussin, Jean Christophe. „Du diagnostic à l'action en agriculture. Activités, espaces et modèles“. Habilitation à diriger des recherches, Université de Reims - Champagne Ardenne, 2008. http://tel.archives-ouvertes.fr/tel-00557709.
Der volle Inhalt der QuelleWald, Noémie. „FTIR imaging as a new histopathological technique to characterize melanomas and their immune microenvironment“. Doctoral thesis, Universite Libre de Bruxelles, 2015. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209046.
Der volle Inhalt der QuelleIn this thesis we used a new and promising technique of imaging based on infrared spectroscopy to study melanoma primary tumors and metastatic lymph nodes. Infrared spectroscopy brings information on the biochemical composition of the main components of the cells. When combined with a microscope and with multivariate statistical analyses, images that are generated allow the identification of melanoma cells and stromal cells in the biopsy. We also focused on the immune infiltration as it was shown to carry an important prognosis value for melanoma patients.
The first part of the thesis was a prerequisite for the rest of the study. It addresses the effects of the process of fixation that tissues obtained by surgical resection undergo for their long term preservation. In chapter III, we showed that Formalin-Fixation and Paraffin-Embedding (FFPE) procedure induces small but significant modifications in the infrared spectra of cells but these are very similar for different cell lines. In turn, it preserves the potential to identify closely-related cell lines by infrared spectroscopy.
We thus pursued our study on primary melanomas. In chapter IV, we first developed an automatic tool capable of identifying melanoma cells and the main cells of the tumor microenvironment in tissue sections. Importantly, we built a second model that brings information on the presence of metastases on the basis of the spectral signature of the primary tumor.
The next chapter is dedicated to the prediction of the response of melanoma to dacarbazine, the first-line chemotherapy to treat stage IV patients. Infrared spectra of the primary tumor were shown to contain information capable of predicting whether dacarbazine will be a useful treatment.
In the last two chapters, we focused on lymphocytes. In chapter VI, we first demonstrated that helper and cytotoxic T cells purified from peripheral blood can be identified on the basis of their infrared signature. Then, in chapter VII we investigated metastatic lymph nodes. We created different statistical models using infrared spectra that first identified the melanoma cells invading the lymph nodes and secondly, the different subpopulations of lymphocytes (B and T cells).
In conclusion, we developed an automatic and reliable tool of imaging to help pathologists in the anatomopathological assessment of primary lesions and lymph nodes./Le mélanome est la forme de cancer cutané la plus mortelle, provoquant environ 80% des décès dus à un cancer de la peau. Lorsque le mélanome est localisé, la chirurgie est le principal traitement et est suffisante pour 80% des patients. A l’opposé, lorsque le mélanome primaire a formé des métastases, le cancer devient beaucoup plus difficile à traiter et la survie de ces patients diminue drastiquement. Seuls 10% des patients vont vivre 5 ans lorsqu’ils développent des métastases à distance. C’est pourquoi un diagnostic précoce est essentiel pour diminuer la mortalité causée par le mélanome. L’étape du diagnostic est également très importante pour donner un pronostic et pour planifier les traitements. Le diagnostic actuel du mélanome est basé sur l’analyse en microscopie optique de sections de la tumeur primaire. Sur base de la morphologie cellulaire et de l’architecture du tissu, cette étape permet premièrement d’identifier le caractère cancéreux de la lésion et deuxièmement d’évaluer son potentiel métastatique. Une analyse du ganglion sentinelle permet également de détecter la présence de métastases. Dans le cadre de cette thèse, nous proposons d’utiliser une nouvelle technique d’imagerie basée sur la spectroscopie infrarouge qui apporte une information complète et unique sur la biochimie de la cellule et des tissus. Les résultats présentés ici indiquent que lorsque les spectres infrarouges sont combinés à des analyses statistiques multivariées, des images sont reconstituées et révèlent les structures et les composants cellulaires majeurs présents dans les coupes de mélanomes. Une étude préliminaire a d’abord pu démontrer que la fixation au formol subies par les biopsies pour les conserver n’entrave pas l’étude de celles-ci par spectroscopie infrarouge. Nous nous sommes alors intéressés aux tumeurs primaires de mélanome et avons développé un modèle statistique, à partir des spectres infrarouges, identifiant automatiquement les cellules de mélanome dans le tissu ainsi que les autres cellules du microenvironnement de la tumeur. Dans ce chapitre, nous avons également créé un autre modèle statistique capable de prédire le potentiel métastatique de la tumeur primaire en se basant sur sa signature spectrale. Nous avons ensuite mis en évidence une signature spectrale corrélée à la réponse à la dacarbazine chez des patients traités pour leurs métastases. Nous avons également montré que des sous-populations de lymphocytes purifiées d’échantillons sanguins pouvaient être identifiées sur base de leur spectre. Cette capacité de la spectroscopie infrarouge à distinguer les différents types de lymphocytes a ensuite été démontrée pour les lymphocytes infiltrant les métastases. Finalement, nous avons mis en évidence l’utilité de cette technique d’imagerie pour la détection de métastases ganglionnaires.
Doctorat en sciences agronomiques et ingénierie biologique
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Kleiren, Emilie. „Towards an early diagnosis of Alzheimer's disease: development of an ATR-FTIR biosensor for the detection of Abeta toxic conformations“. Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209415.
Der volle Inhalt der QuelleGiven that present guidelines for AD diagnosis are increasingly considered as ill-defined, reliable and early-stage detection methods taking into account the presence of toxic Abeta species are highly awaited by the medical community. In this regard, this thesis work describes the development of a sensing device aiming at the specific detection of the amyloid beta peptide in solution via recognition by antibodies grafted at the surface of functionalized germanium crystals. This new type of BIA-ATR (Biospecific Interaction Analysis - Attenuated Total Reflection) biosensor resorts on ATR-FTIR (Attenuated Total Reflection - Fourier Transform Infrared) spectroscopy, which is extremely sensitive to the secondary structure of proteins. The ATR mode uses germanium as optical transduction element combined to the evanescent wave principle to allow selective online monitoring of peptide-antibody binding events.
In the first part of this work, evaluation of the photochemistry on germanium optical elements have been the subject of intense research focus. Our investigations led to the elaboration of a quality control of functionalization efficiency based on infrared spectroscopy. We also set up in the lab an original ELISA method for selecting antibodies in terms of their true affinity for the Abeta peptide.
Thereafter binding experiments were carried out on the BIA-ATR sensor using different antibodies and Abeta isoforms, leading to the establishing of a standardized protocol for the detection of molecules of interest. Our results showed that Abeta detected on the biosensor corresponded precisely to antibody-bound peptide, whereas Abeta assemblies, and especially Abeta 1-42 oligomeric conformations, could be discriminated with respect to their spectral signature. This point, which was later confirmed by unsupervised statistical analysis, could be considered as particularly interesting and innovative, since to our knowledge, such conformation-sensitivity has never been observed with existing AD diagnostic methods. Moreover, effective recycling of the functionalized crystals has been demonstrated, which confers thereby a second major advantage to the biosensor.
In parallel to these experiments, a structural characterization study of Abeta species was undertaken in order to generate a database of IR spectra, as reference for future comparative analysis of physiological fluids on the biosensor. ATR-FTIR measurements revealed a strong dependency on the ratio between oligomers and fibrils within a mixture and their relative ratio in antiparallel and parallel beta-sheet content. Interestingly, separation trials of oligomeric entities demonstrated a specific effect of Cu2+ ions on Abeta aggregation. Stabilization of small oligomeric aggregates at equimolar Cu2+:Abeta ratios, which had never been clearly evidenced so far, could help to unravel some aspects of the complex role of copper in AD development.
These investigations illustrate the applicability of the so-called BIA-ATR methodology to online detection of different forms of the Abeta peptide in solution and the potential of this new sensor technology to fulfill current pitfalls in providing a reliable and comprehensive approach of AD diagnosis.
Doctorat en Sciences agronomiques et ingénierie biologique
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Faye, El Hadji. „Diagnostic partiel de la flore et de la végétation des Niayes et du bassin arachidier au Sénégal: application de méthodes floristique, phytosociologique, ethnobotanique et cartographique“. Doctoral thesis, Universite Libre de Bruxelles, 2010. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210088.
Der volle Inhalt der QuelleLes recherches menées dans cette thèse ont porté sur la réactualisation des données sur la flore et la végétation de deux grandes zones agro-écologiques du Sénégal (les Niayes et le Bassin arachidier) en utilisant l’approche terroir pour mieux envisager la gestion conservatoire des ressources ligneuses. Dans les zones de savanes et de végétations sub-guinéennes respectivement du Bassin arachidier et des Niayes au Sénégal, 288 relevés ont été réalisés par stratification basée sur les villages ou groupes ethniques (Peul, Sérer et Wolof), les systèmes d’utilisation des terres et la topographie dans 6 terroirs villageois et 25 dans les sites de référence. Dans ces terroirs, la connaissance, la priorisation à la conservation des espèces, leur utilisations, comme préalables à la gestion durable de la biodiversité des agrosystèmes, ont aussi été abordées sur 124 espèces ligneuses par enquête ethnobotanique auprès de 216 répondants équitablement répartis entre les ethnies, âges et genres. Ces informants ont aussi évalué la dynamique des formations végétales suivant leur position sur la toposéquence. Les informations sur la dynamique d’occupation des terres ont été obtenues par la cartographie multi-date à partir de photo-aériennes (1954, 1989) et d’image Google earth 2006. Une expérimentation factorielle à trois facteurs (espèces, hauteur et diamètre de coupe) avec 15 répétitions, a été conduite dans le Bassin arachidier sur la régénération des souches des deux principales Combretaceae de la zone (Combretum glutinosum et Guiera senegalensis). Les données obtenues ont été soumises à des analyses multi et uni-variées.
Les résultats phytosociologiques ont montré l’individualisation de onze groupements (G) dont d’une part, deux de savane (G4 et G8), un de forêts secondaires (G10) et deux autres issus des végétations semi-aquatiques (G1 et G5) qui sont les plus proches des situations naturelles, et d’autre part deux de milieux perturbés (G6 et G7) et quatre de milieux cultivés et post-culturaux (G2, G3, G9 et G11). Les premiers groupements sont progressivement envahis par les espèces des milieux perturbés, et les seconds par les espèces rudérales et nitrophiles. La position synsystématique de ces groupements a été donnée. 336 espèces ont été recensées :260 dans les Niayes et 176 dans le Bassin arachidier. La richesse des critères de naturalités des terroirs peuls n’est pas toujours supérieure à celle des autres terroirs dans les deux zones.
Les résultats d’enquête montrent une subdivision des espèces en quatre classes de priorité à la sauvegarde. Les plus prioritaires sont à usages multiples. En outre, les résultats ethnobotaniques montrent clairement que les villages des Niayes sont globalement séparés de ceux du Bassin arachidier mais aussi que les villages homologues sont différents. L’évaluation ethnobotanique de la diversité végétale est plus importante dans la zone du Bassin arachidier comparée aux Niayes. Elle augmente avec la densité dans les Niayes comme dans le Bassin arachidier excepté dans le terroir wolof de ce dernier. Les villages du Bassin arachidier ne présentent aucune restriction dans le choix des espèces destinées à satisfaire leurs différents besoins. Ce manque de sélectivité y est total et renseigne sur le niveau de rareté des ressources ligneuses.
Les résultats cartographiques montrent que les zones des Niayes et du Bassin arachidier connaissent une transformation importante du paysage essentiellement due au processus de création ou d’agrégation des champs en vigueur partout. Cela s’est fait au détriment des formations végétales :suppression des savanes arborées dans les deux zones, suppression et agrégation des savanes arbustives dans les Niayes, fragmentation et dissection dans le Bassin arachidier.
Dans le régime de taillis à courte rotation du Bassin arachidier, il serait plus indiqué de pratiquer une coupe sélective suivant les classes de diamètre et les espèces afin de concilier productivité et durabilité en favorisant le développement des rejets proventifs.
Une extension de l’approche terroir dans les autres zones éco-géographiques du pays devrait être testée pour vérifier les tendances obtenues dans ce travail et recenser et suivre les groupements végétaux, les intégrer dans la classification moderne afin de faciliter le suivi de leur évolution spatio-temporelle. Elle permettrait sans doute l’évaluation de la variabilité locale de l’importance des espèces.
Abstract
Researches carried out in this thesis about updating flora and vegetation data from two major agroecological regions of Senegal (Niayes and Peanut Basin) used village-scale based methodology in order to better consider ligneous resources conservation. In savannas and sub-guinean vegetations of respectively Peanut Basin and Niayes, 288 records were realized upon stratification method based on ethnic groups (Wolof, Peul and Sérer), land use systems and topography in 6 villages and 25 records in the reference sites. In these villages, knowledge, priorisation and uses, prior to sustainable agrobiodiversity management, were also addressed on 124 ligneous species by ethnobotanic survey with 216 respondants equally distributed to ethnic groups, ages and gender. Respondants also addressed vegetation dynamics a long topographic position. Informations on land occupation trends were gained by air-photography cartography and Google earth 2006 image. Factorial experimentation on 3 factors (species, high and diameter of sprouting) with 15 repetitions was implemented on stump regeneration dynamics of the 2 principal Combretaceae in the Peanut Basin region (Combretum glutinosum and Guiera senegalensis). Multivariate and univariate analysis were performed on the data.
Phytosociological results showed discrimination of 11 vegetation groups (G). Two of them (G4 and G8) are savannas samples, one secondary forest (G10), two from semi-aquatic vegetation (G1 and G5); in the other hand, two groups of disturbed situations (G6 and G7) and four cultivated and postcultural groups were found (G2, G3, G9 and G11). The first groups were progressively invaded by cultural and poscultural species and the second groups by ruderary and adventitious species. Systematic position of these groups was indicated. 336 species were recorded: 260 in the Niayes and 176 in the Peanut Basin). Richness in wilderness criterion was not always superior in peul villages.
Ethnobotanical results showed subdivision of species diversity in 4 classes of conservation priority. Most conservation priority species were multipurpose trees. A clear separation between Niayes villages and Peanut basin ones, and also between counterparts’ villages was found. Ethnobotanical valuation of species was higher in the Peanut Basin area. It grows with human density a part from wolof village of the Peanut basin. Villages of the Groundnut Basin showed no selectivity in the choice of species to meet their different needs. This lack of selectivity is complete and translates woody resources scarcity.
Cartographic results show an important landscape transformation in Niayes and Peanut basin areas due to fields creation or aggregation processes running everywhere. This occurred against vegetation formations :attrition of woody savanna in the two zones, attrition and aggregation of shrubby savanna in Niayes area, fragmentation and dissection in Peanut basin.
In short term cutting system of the Peanut Basin, it should be better to practise a selective logging method according to species and diameter classes in order to reconcile productivity and sustainability by ensuring stumps’ low-stem resprouting.
An extension of terroir approach methodology in other local eco-geographical zones of Senegal should be tested in order to complete the identification and monitoring of the dynamics of plant communities, their integration into modern classification to facilitate the monitoring of their spatio-temporal evolution. It should allow the assessment of species local importance variability.
Doctorat en Sciences agronomiques et ingénierie biologique
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Grandisson, Mariane. „Gestion des systèmes d'agriculture itinérante sur brûlis dans l'ouest Guyane : contribution à l'étude de la reproductibilité et de la fertilité“. Antilles-Guyane, 1997. http://www.theses.fr/1997AGUY0024.
Der volle Inhalt der QuelleShifting cultivation on brulis (ai) is a convenient method of cultivation without inputs. After two or three crop cycles, the degradation of soil fertility forces farmers to move their crops and the land is left fallow. Fallowing can be used to reconstitute a biomass, which will release during the next production period, after burning, the mineral elements necessary for the growth and development of crops. The purpose of this study was to provide support for the decision, with a view to eventually establishing these traditional systems. It required an analysis of the management of Qi systems, an important component of reproducibility of fertility, and the condition of fixation. At first, the spatial management of these systems and their capacity to cope with the agro-ecological and socio-economic constraints of the environment, to reproduce, were studied. This study was carried out at the scale of the agrarian system and more precisely at the level of the production systems which correspond to the level of the choices and decisions of the farmers. In a second step, the evolution of the components of fertility, likely to influence the yield of cassava, was analyzed - the cassava constituting the main crop of West Guiana. Three levels were considered: the cropping system that allows to understand the modes of behavior and association of crops, but especially the cultivated plot and the experimental plot, place of measurement and monitoring. In the first stage of this work, a balancing capacity of the giblets is established from the Piaget model. This typology makes it possible to identify 5 functional types of giblets in the region and 2 modes of evolution. In the second stage, during a first cycle of giblets, after secondary forest, the evolution of stocks of carbon, nitrogen and exchangeable bases shows that there is no degradation in relation to the material organic soil. On the other hand, there is a decrease in exchangeable bases following the cultivation and in particular potassium. Comparing this decrease with the needs of the crop, it was possible to identify potassium as a factor limiting production
Jagoret, Patrick. „Analyse et évaluation de systèmes agroforestiers complexes sur le long terme : application aux systèmes de culture à base de cacaoyer au Centre Cameroun“. Thesis, Montpellier, SupAgro, 2011. http://www.theses.fr/2011NSAM0012.
Der volle Inhalt der QuelleCocoa cultivation is generally considered as one of the main deforestation factors in the Tropics. Indeed, in many countries it is based on a low-sustainability technical model of intensive monocrops with shifting production zones. Cocoa agroforests, which are often neglected by research due to their low fermented dried cocoa yields, now appear to be a credible alternative for taking up the new challenges facing world cocoa production. In Centre-South Cameroon, cocoa cultivation is largely based on old cocoa agroforests, which suggests that a sustainable cocoa growing model based on agroforestry systems is possible. Our aim was to more effectively understand how these cocoa agroforests function, through their characteristics, their evolution and their determinants, along with the conditions for their long-term fermented dried cocoa production. Our approach consisted of an evaluation of cocoa agroforests on a plot scale and a comprehensive analysis of technical practices over the long term. The thesis is based on an experimental design set up in the Centre region, in three growing zones that could be differentiated through their pedo climatic conditions (Bokito, Zima and Ngomedzap). A large-scale survey was undertaken (1,171 farms grouping 1,638 cocoa plantations) completed by specific observations collected in a network of 61 cocoa agroforests managed by 40 farmers. Results. (1) Our survey results, completed by specific observations, confirmed the sustainability of the cocoa agroforestry systems from an agro ecological and socio-economic viewpoint. (2) In the forest-savannah transition zone, which is considered sub-optimum for cocoa cultivation, we confirmed that the technical model adopted by the farmers enabled them to set up cocoa agroforests on savannah that were viable over the long term. (3) In the network, a participatory method applied to quantify the use value given to the species by the farmers confirmed the multi-functionality of cocoa agroforests and measured the place occupied in it by cocoa. (4) The evaluation of the cocoa tree stands, achieved by adapting the regional agronomic diagnosis method to complex systems, revealed the factors limiting cocoa yield. It was proved that cocoa yield is closely linked to the structure of the cocoa tree stand and that of the intercropped stands. (5) Lastly, a comprehensive analysis of farmer practices over the long term, in association with the evolution of the technical management of the cocoa tree stands, confirmed the flexibility of cocoa agroforestry systems. This flexibility was reflected in the evolution pathways for specific practices and structures. This work provides a new methodological basis to assess the performance of complex agroforestry systems. All the results and knowledge produced by this work make it possible to draw up proposals for developing a new technical model for cocoa growing
Mansoor, Shahid. „Cotton leaf curl disease in Pakistan : molecular characterisation, diagnostics, and genetically engineered virus resistance“. Thesis, University of East Anglia, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302196.
Der volle Inhalt der QuelleChampeil, Agnès. „Contribution à la compréhension des effets des systèmes de culture sur l'infection des cultures de blé tendre d'hiver par la fusariose et la contamination des grains par les mycotoxines associées“. Paris, Institut national d'agronomie de Paris Grignon, 2004. http://www.theses.fr/2004INAP0015.
Der volle Inhalt der QuelleMorant, Philippe. „Caractérisation de la fragilité écologique et des potentialités agronomiques de la région de Hounde au Burkina Faso : utilisation de différentes techniques de diagnostic“. Vandoeuvre-les-Nancy, INPL, 1991. http://docnum.univ-lorraine.fr/public/INPL_T_1991_MORANT_P.pdf.
Der volle Inhalt der QuelleLamour, Julien. „Analyse de données spatialisées issues de la production pour améliorer le diagnostic agronomique en bananeraie - Prise en compte de l’asynchronisme de la culture“. Thesis, Montpellier, SupAgro, 2019. http://www.theses.fr/2019NSAM0017.
Der volle Inhalt der QuelleExported bananas are produced on industrial plantations covering large areas and relying most of the times on clones of the Cavendish cultivars. This crop is input and labour intensive and is subject to environmental and societal constraints that impose an improvement in agricultural practices. Precision Agriculture (PA) is a methodological approach that has emerged on arable crops to optimize their yield, quality and reduce their environmental impact. This approach uses geo-referenced producer’s data and studies their spatial variability to increase the farming performance by adjusting the management by area. Its objective is to highlight the variable growth conditions and identify those that are manageable in order to optimize production processes according to the specific potential of the sites on the farm. Unlike arable crops, bananas exhibit unique characteristics that must be taken into account when studying production and yields. In particular, banana plants are asynchronous, their development cycle is not seasonal and is not synchronized by the cropping system. As a result, the fields are made up of banana plants at different phenological stages. Thus, unlike arable crops which are synchronous, the observations that can be made on a banana plantation at a given time depend not only on growing conditions but also on the variable phenological stages of the plants. The objective of this doctoral thesis was to propose new methods for using data produced in banana plantations in order to facilitate agronomic diagnosis in a PA approach. The data used are mainly those recorded to manage the harvests. These are observations classically recorded in banana plantations. We also studied remote sensing data and proposed analytical methods to study spatial variability by reducing the bias due to the asynchronism of banana plants.The first thesis work consisted in proposing methods to characterize the asynchronism of the fields. For this purpose, we defined several indicators: the average duration of the banana plant development cycle; the heterogeneity of growing conditions; and finally the average phenological stage of a field and the within field variability of the stages. These methods were applied to flowering data from an industrial plantation in Cameroon. An effect of the environment and producers' practices on asynchronism was highlighted. A second part of the thesis work consisted in proposing a model that identifies variability related to the environment and producers' choices using production data. The purpose of this method was to generate maps that could be interpreted agronomically, without the asynchronism bias. The model we proposed was applied to a particular property: the time between flowering and commercial maturity. It is assumed that this method is general enough to be applied to other agronomic properties such as the weight of bunches at harvest.Finally, the last subject we studied was the relevancy of remote sensing in banana plantations despite the diversity of phenological stages. We assessed the importance of different sources of variability on the chlorophyll content of banana leaves measured from a pedestrian sensor and constructed an index to predict this content by drone. Maps of within field variability of chlorophyll content have been produced by this method, but agronomic interpretation must be done with caution because the phenological stages are not known and their effects cannot be corrected. The conditions for interpreting these maps are discussed
Buchteile zum Thema "Agronomie – Diagnostic"
Chen, Yongsheng. „Dissection of Agronomic Traits in Crops by Association Mapping“. In Diagnostics in Plant Breeding, 119–42. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-5687-8_6.
Der volle Inhalt der QuelleDoré, Thierry, Cathy Clermont-Dauphin, Yves Crozat, Christophe David, Marie-Hélène Jeuffroy, Chantal Loyce, David Makowski, Eric Malézieux, Jean-Marc Meynard und Muriel Valantin-Morison. „Methodological Progress in On-Farm Regional Agronomic Diagnosis: A Review“. In Sustainable Agriculture, 739–52. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2666-8_45.
Der volle Inhalt der Quelle„Part V: Diagnostic Procedures for Soil and Plant Analysis“. In Agronomic Handbook, 365–66. CRC Press, 2002. http://dx.doi.org/10.1201/9781420041507-20.
Der volle Inhalt der QuelleBiarnès, Véronique, Jérémie Lecoeur, Marie-Hélène Jeuffroy, Aurélie Vocanson und Bertrand Ney. „A model which integrates knowledge on pea crop physiology and agronomic diagnosis“. In Physiology of the Pea Crop, 201–11. CRC Press, 2010. http://dx.doi.org/10.1201/b10504-12.
Der volle Inhalt der Quelle„Nodular Diagnosis: Agronomic Basis for an Integrated Improvement of Symbiotic Nitrogen Fixation and the N2-dependent Yield of Grain-legumes“. In Nitrogen Assimilation by Plants, 439–48. CRC Press, 2001. http://dx.doi.org/10.1201/9781482279849-36.
Der volle Inhalt der QuelleQuadros, Gean Paulo Buchta de, Jenifer Goes Predolin, Serinei Cesar Grigolo und Almir Antonio Gnoatto. „Analysis of socioeconomic indicators of rural properties in Nova Esperança do Sudoeste - PR“. In DEVELOPMENT AND ITS APPLICATIONS IN SCIENTIFIC KNOWLEDGE. Seven Editora, 2023. http://dx.doi.org/10.56238/devopinterscie-076.
Der volle Inhalt der QuelleKonferenzberichte zum Thema "Agronomie – Diagnostic"
Upadhyay, Deepak, Aditya Verma, Vinay Kukreja und Shiva Mehta. „Tech-Driven Agronomy: Federated Learning CNN's for Aloe Vera Leaf Disease Diagnosis“. In 2024 11th International Conference on Reliability, Infocom Technologies and Optimization (Trends and Future Directions) (ICRITO). IEEE, 2024. http://dx.doi.org/10.1109/icrito61523.2024.10522456.
Der volle Inhalt der QuelleStroia, Ciprian, Madalina Corcan, Ionel Samfira, Marius Stroia und Lucretiu Dancea. „THE BIODIVERSITY OF THE GRASSLANDS IN WESTERN ROMANIA FOR THEIR SUSTAINABLE“. In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022v/6.2/s25.42.
Der volle Inhalt der QuelleURBONIENĖ, Jūratė, und Indrė KOVERIENĖ. „A COMPARATIVE INVESTIGATION OF ENGLISH LANGUAGE PROFI-CIENCY AND ACADEMIC PERFORMANCE OF CURRENT UNDERGRAD-UATE STUDENTS WITH SPECIAL REFERENCE TO GENERATION Z: RURAL VERSUS URBAN STUDENTS“. In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.159.
Der volle Inhalt der QuelleBerichte der Organisationen zum Thema "Agronomie – Diagnostic"
Rajarajan, Kunasekaran, Alka Bharati, Hirdayesh Anuragi, Arun Kumar Handa, Kishor Gaikwad, Nagendra Kumar Singh, Kamal Prasad Mohapatra et al. Status of perennial tree germplasm resources in India and their utilization in the context of global genome sequencing efforts. World Agroforestry, 2020. http://dx.doi.org/10.5716/wp20050.pdf.
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