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Author : Gilles Lemaire
Publisher : Editions Quae
ISBN 13 : 9782738007643
Total Pages : 338 pages
Book Rating : 4.0/5 (76 download)
Download or read book Maîtrise de l'azote dans les agrosystèmes written by Gilles Lemaire and published by Editions Quae. This book was released on 1997 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Maîtrise de l'azote dans les agrosystèmes written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter J. Lea
Publisher : Springer Science & Business Media
ISBN 13 : 3662040646
Total Pages : 410 pages
Book Rating : 4.6/5 (62 download)
Download or read book Plant Nitrogen written by Peter J. Lea and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jointly published with INRA, Paris. This book covers all aspects of the transfer of nitrogen from the soil and air to a final resting place in the seed protein of a crop plant. It describes the physiological and molecular mechanisms of ammonium and nitrate transport and assimilation, including symbiotic nitrogen fixation by the Rhizobiacea. Amino acid metabolism and nitrogen traffic during plant growth and development and details of protein biosynthesis in the seeds are also extensively covered. Finally, the effects of the application of nitrogen fertilisers on plant growth, crop yield and the environment are discussed. Written by international experts in their field, Plant Nitrogen is essential reading for all plant biochemists, biotechnologists, molecular biologists and physiologists as well as plant breeders, agricultural engineers, agronomists and phytochemists.
Author : Victor Sadras
Publisher : Elsevier
ISBN 13 : 0124169791
Total Pages : 566 pages
Book Rating : 4.1/5 (241 download)
Download or read book Crop Physiology written by Victor Sadras and published by Elsevier. This book was released on 2014-09-17 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: From climate change to farming systems to genetic modification of organisms, Crop Physiology, Second Edition provides a practical tool for understanding the relationships and challenges of successful cropping. With a focus on genetic improvement and agronomy, this book addresses the challenges of environmentally sound production of bulk and quality food, fodder, fiber, and energy which are of ongoing international concern. The second edition of Crop Physiology continues to provide a unique analysis of these topics while reflecting important changes and advances in the relevant science and implementation systems. Contemporary agriculture confronts the challenge of increasing demand in terms of quantitative and qualitative production targets. These targets have to be achieved against the background of soil and water scarcity, worldwide and regional shifts in the patterns of land use driven by both climate change and the need to develop crop-based sources of energy, and the environmental and social aspects of agricultural sustainability. - Provides a view of crop physiology as an active source of methods, theories, ideas, and tools for application in genetic improvement and agronomy - Written by leading scientists from around the world - Combines environment-specific cropping systems and general principles of crop science to appeal to advanced students, and scientists in agriculture-related disciplines, from molecular sciences to natural resources management
Author : Nathalie Munier-Jolain
Publisher : CRC Press
ISBN 13 : 1439839727
Total Pages : 300 pages
Book Rating : 4.4/5 (398 download)
Download or read book Physiology of the Pea Crop written by Nathalie Munier-Jolain and published by CRC Press. This book was released on 2010-04-19 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rich in bibliographic references, this book presents the current status of knowledge on the physiology of the pea crop. It draws on contributions from plant physiologists and researchers in various other disciplines who have been working together for many years on the production of plants rich in proteins. The text first discusses vegetative and re
Author : Heribert Insam
Publisher : Springer Science & Business Media
ISBN 13 : 3662087243
Total Pages : 624 pages
Book Rating : 4.6/5 (62 download)
Download or read book Microbiology of Composting written by Heribert Insam and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composting is increasingly used as a recycling technology for organic wastes. Knowledge on the composition and activities of compost microbial communities has so far been based on traditional methods. New molecular and physiological tools now offer new insights into the "black box" of decaying material. An unforeseen diversity of microorganisms are involved in composting, opening up an enormous potential for future process and product improvements. In this book, the views of scientists, engineers and end-users on compost production, process optimisation, standardisation and product application are presented.
Author : Élodie Nivelle
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (18 download)
Download or read book Évaluation des effets de l'azote et des herbicides sur les indicateurs qualitatifs du sol dans des agrosystèmes contrastés written by Élodie Nivelle and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'utilisation des fertilisants azotés et des herbicides de synthèse est aujourd'hui nécessaire pour assurer la productivité des systèmes de culture et répondre à la demande alimentaire d'une population mondiale en croissance démographique. Cependant, les effets potentiels de ces produits de synthèse sur les propriétés édaphiques et aériennes des agrosystèmes ont été décrits comme dépendants de l'environnement physico-chimique et biologique du sol sur lequel ils sont appliqués. En particulier, il semblerait que les sols non perturbés et sous couverture végétale permanente, caractérisés par des propriétés édaphiques très différenciées des sols gérés sous labour conventionnel, puissent modifier les effets non ciblés de certains herbicides. Plusieurs expérimentations en champ ainsi que deux études en conditions contrôlées ont permis de mettre en évidence que les systèmes gérés en semis-direct sous couverture végétale permanente étaient associés à une augmentation des teneurs en carbone et azote organique, des activités fonctionnelles microbiennes, de l'abondance en spores de champignons mycorhiziens arbusculaires, et de la colonisation racinaire du maïs par les champignons mycorhiziens. Deuxièmement, la fertilisation azotée a induit des effets négatifs sur certains indicateurs biologiques du sol comme l'activité de deshydrogénase alors qu'elle a permis d'augmenter la productivité végétale et la survie de certains parasites aériens des cultures. Troisièmement, le glyphosate, un herbicide total, a augmenté le temps de dégradation des substrats organiques, et n'a pas eu d'effet sur l'activité des champignons mycorhiziens lorsqu'il était appliqué seul ; par contre l'application d'azote en combinaison avec le glyphosate sur un sol fertilisé depuis 6 ans a entraîné une diminution du taux de colonisation du haricot par les champignons mycorhiziens. Les engrais azotés appliqués sur le long terme sont donc capables de modifier les effets non ciblés du glyphosate. Enfin, le S-Metolachlore, un herbicide sélectif, a augmenté la teneur en nitrates des sols cultivés en semis-direct, sans affecter ceux gérés en labour annuel, et a également augmenté la teneur en ammonium des turricules de vers de terre des sols conduits en semis-direct et fertilisés depuis 6 ans. Nous concluons que ce sont essentiellement les combinaisons de pratiques qui sont responsables des effets des herbicides sur les propriétés édaphiques et aériennes dans les agrosystèmes.
Author : P. C. Struik
Publisher : CABI
ISBN 13 : 9780851998916
Total Pages : 424 pages
Book Rating : 4.9/5 (989 download)
Download or read book Crop Science written by P. C. Struik and published by CABI. This book was released on 2001-09-28 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text includes keynote invited papers from the Third International Crop Science Congress held in Hamburg, Germany in August 2000. The papers provide an overview of the major issues confronting crop science today and in the future.
Author : Daniel Wallach
Publisher : Elsevier
ISBN 13 : 008046193X
Total Pages : 465 pages
Book Rating : 4.0/5 (84 download)
Download or read book Working with Dynamic Crop Models written by Daniel Wallach and published by Elsevier. This book was released on 2006-05-10 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical models are being used more and more widely to study complex dynamic systems (global weather, ecological systems, hydrological systems, nuclear reactors etc. including the specific subject of this book, crop-soil systems). The models are important aids in understanding, predicting and managing these systems. Such models are complex and imperfect. One fundamental research direction is to seek a better understanding of how these systems function, and to propose mathematical expressions embodying that understanding. However, this is not sufficient. It is also essential to have tools (often mathematical and statistical methods) to aid in developing, improving and using the models built from those equations. The book is specifically concerned with the application of methods to crop models, but much of the material is also applicable to dynamic system models in other fields. The goal of this book is to fill that gap.* State-of-the-art methods explained simply and illustrated specifically for crop models* Parameter estimation – applying statistical methods to the complex case of crop models, including Bayesian methods * Includes model evaluation, understanding and estimating prediction error* Offers a unique data assimilation by using the Kalman filter and beyond
Author : Alain Peeters
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251051597
Total Pages : 328 pages
Book Rating : 4.0/5 (515 download)
Download or read book Wild and Sown Grasses written by Alain Peeters and published by Food & Agriculture Org.. This book was released on 2004 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Co-publication with Blackwell Publishing.
Author : Fatou Gueye
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (113 download)
Download or read book Améliorer la gestion de l'azote dans les systèmes de culture agro-écologiques par le diagnostic des pertes d'azote written by Fatou Gueye and published by . This book was released on 2019 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: La gestion de l'azote dans les agrosystèmes nécessite l'utilisation d'outils de diagnostic permettant d'évaluer les pertes d'azote et aidant en l'identification et/ou la mise en place de systèmes à haute performance azotée. L'agriculture évoluant vers des systèmes complexes, une adaptation des outils existant à ces nouveaux systèmes devient une nécessité. L'objectif de ce travail est d'évaluer l'adaptation de l'outil Syst'N aux associations culturales (Syst'N-asso), notamment blé-pois, ainsi que sa généricité (capacité à simuler d'autres espèces en association) et de proposer, voire de mettre en oeuvre des améliorations. Différentes modifications/améliorations de formalismes ont été réalisées, relatives notamment à la compétition entre espèces, à la densité de semis et à la croissance post-levée. Des données issues d'expérimentations conduites en France ont été utilisées pour l'évaluation, objectivée à partir d'indicateurs statistiques. A l'issu de ce travail, nous avons obtenu une version du modèle plus performante, avec une meilleure qualité de prédiction des associations culturale, que la version de départ. Cependant, ce travail a permis de mettre en évidence la sensibilité du modèle aux premiers jours de croissance et ses limites à simuler des systèmes complexes, du fait de son objectif de simplicité. Toutefois, des pistes d'amélioration qui rendent le modèle un peu plus complexe, mais dont les données requises sont accessibles pour les usagers, sont identifiées.
Author : Parvaiz Ahmad
Publisher : Springer Science & Business Media
ISBN 13 : 1461461081
Total Pages : 518 pages
Book Rating : 4.4/5 (614 download)
Download or read book Salt Stress in Plants written by Parvaiz Ahmad and published by Springer Science & Business Media. This book was released on 2013-02-26 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental conditions and changes, irrespective of source, cause a variety of stresses, one of the most prevalent of which is salt stress. Excess amount of salt in the soil adversely affects plant growth and development, and impairs production. Nearly 20% of the world’s cultivated area and nearly half of the world’s irrigated lands are affected by salinity. Processes such as seed germination, seedling growth and vigour, vegetative growth, flowering and fruit set are adversely affected by high salt concentration, ultimately causing diminished economic yield and also quality of produce. Most plants cannot tolerate salt-stress. High salt concentrations decrease the osmotic potential of soil solution, creating a water stress in plants and severe ion toxicity. The interactions of salts with mineral nutrition may result in nutrient imbalances and deficiencies. The consequence of all these can ultimately lead to plant death as a result of growth arrest and molecular damage. To achieve salt-tolerance, the foremost task is either to prevent or alleviate the damage, or to re-establish homeostatic conditions in the new stressful environment. Barring a few exceptions, the conventional breeding techniques have been unsuccessful in transferring the salt-tolerance trait to the target species. A host of genes encoding different structural and regulatory proteins have been used over the past 5–6 years for the development of a range of abiotic stress-tolerant plants. It has been shown that using regulatory genes is a more effective approach for developing stress-tolerant plants. Thus, understanding the molecular basis will be helpful in developing selection strategies for improving salinity tolerance. This book will shed light on the effect of salt stress on plants development, proteomics, genomics, genetic engineering, and plant adaptations, among other topics. The book will cover around 25 chapters with contributors from all over the world.
Author : Gilles Lemaire
Publisher : Academic Press
ISBN 13 : 0128110511
Total Pages : 484 pages
Book Rating : 4.1/5 (281 download)
Download or read book Agroecosystem Diversity written by Gilles Lemaire and published by Academic Press. This book was released on 2018-10-08 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agro-Ecosystem Diversity: Impact on Food Security and Environmental Quality presents cutting-edge exploration of developing novel farming systems and introduces landscape ecology to agronomy. It encompasses the broad range of links between agricultural development and ecological impact and how to limit the potential negative results. Presented in seven sections, each focusing on a specific challenge to sustaining diversity, the book provides insights toward the argument that by re-introducing diversity, it should be possible to maintain a high level of productivity of agro-ecosystems while also maintaining and/or restoring a satisfactory level of environment quality and biodiversity. Demonstrates that diversified agro-ecosystems can be intensified with environmental quality preserved, restored and enhanced Includes analysis of economic constraints leading to specialization of farms and regions and the social locking forces resisting to diversification of agro-ecosystems Presents a global vision of world agriculture and the tradeoff between a necessary increase in food production and restoring environment quality
Author : Corinne Jambert
Publisher :
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.:/5 (489 download)
Download or read book EMISSION OF NITROGEN COMPOUNDS TO THE ATMOSPHERE FROM FERTILIZED AGROSYSTEMS: MAIZE CULTIVATION IN THE LANDES DE GASCOGNE written by Corinne Jambert and published by . This book was released on 1995 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL PORTE SUR L'ETUDE DE L'INTERACTION BIOSPHERE-ATMOSPHERE DANS LES SYSTEMES PERTURBES PAR LES ACTIVITES AGRICOLES, PLUS PRECISEMENT SUR L'INFLUENCE DE LA FERTILISATION SUR L'EMISSION DANS L'ATMOSPHERE DE COMPOSES GAZEUX DE L'AZOTE ET DE METHANE. L'AGROSYSTEME ETUDIE, SITUE DANS LES LANDES DE GASCOGNE, EST DOMINE PAR LA MONOCULTURE IRRIGUEE DE MAIS, OU LA FERTILISATION AZOTEE EST TRES ELEVEE. LES RESULTATS ONT PERMIS D'ETABLIR UN SCHEMA CONCEPTUEL DU CYCLE DE L'AZOTE DANS LE SYSTEME MAISICULTURE-PINEDE. LES EXCES D'ENGRAIS AZOTES SONT DISSIPES DANS L'ATMOSPHERE SOUS FORME GAZEUSE, PRINCIPALEMENT NO ET N#2O, LA NAPPE PHREATIQUE RESTE PEU POLLUEE EN RAISON D'UN FORT POTENTIEL DE DENITRIFICATION. PAR AILLEURS, LA METHANOGENESE DUE A LA PRESENCE DE MATIERE ORGANIQUE FACILEMENT BIODEGRADABLE DES CANNES DE MAIS PEUT SUCCEDER A LA DENITRIFICATION. NOUS AVONS MONTRE L'IMPORTANCE DU POTENTIEL DE DENITRIFICATION, DE LA DENITRIFICATION CHIMIQUE ET DU PH, AINSI QUE L'INFLUENCE DES EVENEMENTS PLUVIEUX SUR LES EMISSIONS DE PROTOXYDE D'AZOTE. LA MESURE INTEGREE DE FLUX D'EMISSION A L'ECHELLE D'UNE PARCELLE A NECESSITE L'UTILISATION DE METHODES MICROMETEOROLOGIQUES. UNE STATION DE MESURE DES FLUX PAR LA METHODE DES GRADIENTS A ETE CONSTRUITE. ELLE A PERMIS DE QUANTIFIER LES EMISSIONS DE COMPOSES GAZEUX VERS L'ATMOSPHERE EN INTEGRANT LES FLUX SUR PLUSIEURS HECTARES ET PENDANT UN MOIS APRES LA FERTILISATION, AU COURS DE LA CROISSANCE DE LA CULTURE. LES PROBLEMES DUS AUX PETITES HETEROGENEITES LOCALES ONT AINSI PU ETRE ELIMINES PENDANT CETTE PERIODE DE FORTES EMISSIONS. ASSOCIEES AUX MESURES REALISEES SUR UN CYCLE ANNUEL PAR LES TECHNIQUES DE CHAMBRE CES DERNIERES MESURES ONT CONDUIT A UNE QUANTIFICATION DES PERTES AZOTEES GAZEUSES VERS L'ATMOSPHERE. CELLES-CI PERMETTENT D'EXPLIQUER EN GRANDE PARTIE LE DESEQUILIBRE DU BILAN AGRONOMIQUE DE L'AZOTE AU NIVEAU DE CES CHAMPS FERTILISES
Author : International Society of Soil Science
Publisher :
ISBN 13 :
Total Pages : 520 pages
Book Rating : 4.8/5 (263 download)
Download or read book Bulletin de L'Union Internationale de la Science Du Sol written by International Society of Soil Science and published by . This book was released on 1999 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. Lüscher
Publisher : vdf Hochschulverlag AG
ISBN 13 : 9783728129406
Total Pages : 1272 pages
Book Rating : 4.1/5 (294 download)
Download or read book Land Use Systems in Grassland Dominated Regions written by A. Lüscher and published by vdf Hochschulverlag AG. This book was released on 2004 with total page 1272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agriculture, alpine, global change, nutrients, farming
Author :
Publisher :
ISBN 13 :
Total Pages : 514 pages
Book Rating : 4.E/5 ( download)
Download or read book Proceedings written by and published by . This book was released on with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
