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Agronomical techniques to improve technological and sanitary quality Organic Eprints
David, C.; Celette, F.; Abecassis, J.; Carcea, M.; Dubois, D.; Friedel, J.K.; Hellou, G.; Jeuffroy, M.H.; Mäder, P.; Thomsen, I.K..
In spite of variable grain protein contents, baking quality of organic wheat was found to be acceptable to good. Mycotoxin (DON) infestation was generally low on tested grain samples. Choice of wheat cultivar was the most efficient way to obtain higher grain quality. Fertilization with readily available nitrogen and, to a lower extent, association with legumes and green manures with mixtures containing fodder legumes also improved grain quality. Reduced tillage affected soil quality and wheat yield but had little effects on grain quality.
Tipo: Report Palavras-chave: Food security; Food quality and human health Cereals; Pulses and oilseeds.
Ano: 2012 URL: http://orgprints.org/21100/1/AGTEC_farmers_leaflet_Final_VJune12.pdf
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Architectural analysis of herbaceous crop species: A comparative study of maize (Zea mays L.) and garden pea (Pisum sativum L.) Inra
Moulia, B.; Edelin, C.; Loup, C.; Jeuffroy, M.H..
Cet article présente une illustration des premiers acquis de l’application de l’analyse architecturale, initialement développée pour les ligneux, à des espèces herbacées cultivées, à partir de la comparaison de deux espèces, le maïs (Zea mays L.) et le pois (Pisum sativum L.). Malgré d’évidentes différences physionomiques, des similitudes de développement architectural, correspondant à des concepts d’analyse architecturale, existent. La signification de ces résultats pour la modélisation architecturale, l’agrophysiologie et l’architecture des plantes sont discutées. Il semble que le principal bénéfice d’une telle approche interdisciplinaire réside dans la mise en place d’une écophysiologie développementale comparée (entre espèces). Ceci devrait permettre...
Tipo: Journal Article Palavras-chave: GEOMETRIE DU COUVERT; PLASTICITE; PHYTOMERE; COUVERT; ENTRE-NOEUD.
Ano: 1999 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9900021814078953&uri=/notices/prodinra1/2010/01/
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Co-designing farming systems and decision support tools : a generic framework Inra
Cerf, M.; Thiery, O.; Mathieu, A.; Beguin, P.; Brives, H.; Casagrande, M.; David, C.; Debaeke, P.; Jeuffroy, M.H.; Lecomte, P.; Nozieres, M.O.; Parnaudeau, V.; Prost, L.; Reau, R.; Roche, B.; Sabourin, E.; Scopel, É.; De Tourdonnet, S.; Triomphe, B.; Vayssières, J..
Tipo: Conference Paper Palavras-chave:  SCIENCES SOCIALES; PARTICIPATION; REFLEXIVITE; CADRE CONCEPTUEL  MODELLING; PARTICIPATION; CO-DESIGN; REFLEXIVITY; CONCEPTUAL FRAMEWORK; INTRODUCTION.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20116f37713c&uri=/notices/prodinra1/2011/03/
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Comment articuler modes d'évaluation des variétés, conduite des cultures et processus d'amélioration génétique? Inra
Jeuffroy, M.H.; Messean, A..
Le développement conjoint et cohérent, au cours des dernières décennies, d’une sélection variétale axée sur l’amélioration de la productivité et d’innovations techniques permettant de lever les facteurs limitants de la production a permis une amélioration significative et régulière de la production agricole. Face aux changements globaux, aux enjeux liés au développement durable et à la diversification des attentes des marchés et de la société, une évolution des systèmes de production est nécessaire. Compte-tenu de la cohérence des systèmes de production, et du lien entre sélection variétale et conduite de cultures, non seulement l’évaluation des variétés doit prendre en compte la diversité accrue des environnements de production et des critères...
Tipo: Journal Article Palavras-chave: CONDUITE CULTURALE; INTERACTION GENOTYPE-ENVIRONNEMENT CULTIVAR; CROP MANAGEMENT; MODEL; GENOTYPE BY ENVIRONMENT INTERACTION; CROPPING SYSTEMS.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011bf8af484&uri=/notices/prodinra1/2011/04/
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Designing new sustainable cropping systems: a method combining the participation of various actors and the use of assessment tools Inra
Prost, L.; Beguin, P.; Cerf, M.; Guichard, L.; Jeuffroy, M.H.; Reau, R..
The aim of this communication is to present and discuss a participative method we aredeveloping to design and assess cropping systems adapted to multi-criteria demands andassessment. Based on the prototyping approach (e.g. Vereijken 1997; Lançon et al. 2007), this method takes advantage of expert knowledge and focuses on the means to collect, gather and transmit the variety of expectations by involving the stakeholders in the process of design. We are building and testing this method in different case studies in France. This communication aims at describing each step of this method, which actors should be involved and which tools we can use to design innovative cropping systems.
Tipo: Conference Paper
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011a381b906&uri=/notices/prodinra1/2011/03/
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Effect of a short period of high day temperature during flowering on the seed number per pod of pea (Pisum sativum L) Inra
Jeuffroy, M.H.; Duthion, C.; Meynard, J.M.; Pigeaire, A..
Des pois ont été cultivés en serre, puis en chambre de culture (16 h de jour à 20 °C ; 8 h de nuit à 13 °C). Sept jours après le début de la floraison, une partie des plantes a été soumise, pendant 2 ou 4 j consécutifs, à des températures élevées, 28 ou 31 °C ; la période de traitement était de 6 h au milieu de la photophase. Les autres plantes, maintenues à 20 °C, servaient de témoins. Ni le développement (émission des feuilles (tab II), progression de la floraison (tab III) et du stade limite d’avortement (fig 1)), ni la croissance des plantes (tab IV), ni le nombre de gousses par plante (tab IV) n’ont été atteints par la contrainte thermique. En revanche, le nombre de graines par gousse est significativement affecté par les hautes températures...
Tipo: Journal Article Palavras-chave: DEVELOPPEMENT; CROISSANCE; AVORTEMENT DE GRAINES; PERIODE CRITIQUE; DIAGNOSTIC CULTURAL.
Ano: 1990 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9100060020019471&uri=/notices/prodinra1/2009/04/
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Nitrogen management of organic winter wheat Decision-making through model-based explorations Organic Eprints
David, C.; Jeuffroy, M.H.; Meynard, J.M..
In organic wheat, nitrogen is one of the key limiting factors responsible for irregular productivity and low quality (David et al, 2005b), 5 to 50 % less than conventionally managed crops (Nieberg and Schulze Pals, 1996). On arable farms, the decreasing use of N-organic sources such as forage legumes, manures and composts relative to mixed-farms requires the development of suitable fertility strategies based on the use of off-farm organic fertilizers. Numerous mechanistic crop models simulating the dynamics of crop requirements and N supply in the soil (e.g. CERES, EPIC, APSIM, ARCWHEAT STICS) have previously been developed (Whisler et al, 1996). Although these models are highly used in research, their complexity and input requirements have limited their...
Tipo: Conference paper, poster, etc. Palavras-chave: Nutrient turnover Cereals; Pulses and oilseeds.
Ano: 2005 URL: http://orgprints.org/4215/4/4215%2DDavid_etal_4p_revised%2Ded.pdf
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Réduire les émissions par les sols du gaz à effet de serre, N2O Inra
Hénault, C.; Cellier, P.; Jeuffroy, M.H.; Nicolardot, B.; Revelin, C..
Tipo: Conference Paper Palavras-chave: N2O; EFFET DE SERRE; EMISSION DE GAZ; REDUCTION D'EMISSION; UTILISATION; AMELIORATION; EFFICACITE; FONCTION DES PROCESSUS MICROBIENS; PROCESSUS DE NITRIFICATION; UTILISATION D'INHIBITEURS.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20105f219c6&uri=/notices/prodinra1/2011/06/
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STICS: a generic model for the simulation of crops and their water and nitrogen balances. I. Theory and parameterization applied to wheat and corn Inra
Brisson, N.; Mary, B.; Ripoche, D.; Jeuffroy, M.H.; Ruget, F.; Nicoullaud, B.; Gate, P.; Devienne-Barret, F.; Antonioletti, R.; Durr, C.; Richard, G.; Beaudoin, N.; Recous, S.; Tayot, X.; Plenet, D.; Cellier, P.; Machet, J.M.; Meynard, J.M.; Delécolle, R..
STICS est un modèle de culture conçu comme un outil de simulation opérationnel en conditions agricoles. Ses variables de sortie sont relatives à la production, à la fois en quantité et en qualité, et à l’environnement. Ses entrées sont relatives au climat, au sol et au système de culture. STICS est présenté comme un modèle montrant les qualités suivantes : robustesse, facilité d’accès aux données d’entrée, souplesse d’évolution par une présentation modulaire et généricité (facilité d’adaptation à divers types de plantes). Pourtant, il ne s’agit pas d’un modèle entièrement nouveau dans les formalismes utilisés. Ils sont, pour la plupart, issus de modèles existants. Les grands processus simulés sont la croissance et le développement de la culture ainsi que...
Tipo: Journal Article Palavras-chave: BILAN AZOTE; MODELE DE CULTURE; CROISSANCE; RELATION PLANTE SOL.
Ano: 1998 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB9800028439072082&uri=/notices/prodinra1/2010/01/
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Studying cropping system management by simulation: the record platform project Inra
Bergez, J.E.; Chabrier, P.; Garcia, F.; Gary, C.; Jeuffroy, M.H.; Martin-Clouaire, R.; Raynal, H.; Wallach, D..
The pressing need in adapting and improving farming practices has motivated research efforts to extend the classical analyses of soil-crop-c1imate systems to considerations of their management at field, farm and regional scales. For the specifie question of analysing and designing innovative cropping systems, INRA (French National Institute for Agricultural Research) has launched the development of a simulation modeling platform called RECORD. This modelling platform is intended to ease complex model development and to promote model reusability. The platform will also offer common methods for estimating model parameters, analysing simulation outputs and optimizing management policies. In the following, we first present the main functional requirements of...
Tipo: Conference Paper Palavras-chave:  .
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20106fb58032&uri=/notices/prodinra1/2011/02/
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The Azodyn crop model as a decision support tool for choosing cultivars Inra
Barbottin, A.; Le Bail, M.; Jeuffroy, M.H..
We evaluated the Azodyn wheat crop model as a cultivar decision support tool using a set of 14 genotypes, tested in 21 contrasting environments. The results showed that the Azodyn crop model satisfactorily simulated yield and grain protein content for a large range of genotypes and environments, as shown by a root mean square error of 1.4 Mg ha-1 and 1.7 g 100 g MS-1, respectively. The comparison between the observed and the simulated rankings of genotypes showed a ranking error of the model of one rank or less. The model was able to identify the best genotype to be used to obtain the highest yield in 20 cases out of 33 and the highest grain protein content in 48 cases out of 64. As a new way to evaluate crop models as a decision support tool for cultivar...
Tipo: Journal Article Palavras-chave: CROP MODEL; CULTIVAR; DECISION SUPPORT TOOL; CULTIVAR USER; MODEL EVALUATION.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200779dc686c&uri=/notices/prodinra1/2010/08/
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Using agronomic models to predict cultivar performances under various environments and cropping systems Inra
Jeuffroy, M.H.; Debaeke, P.; Gauffreteau, A.; Lecomte, C.; Loyce, C.; Prost, L..
Tipo: Conference Paper Palavras-chave: AGRONOMIC MODEL; CROPPING SYSTEM; MULTI ENVIRONMENT TRIAL; MET.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011ef9c5d5e&uri=/notices/prodinra1/2011/03/
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What modelling methods are used by researchers in agronomy? Inra
Prost, L.; Cerf, M.; Jeuffroy, M.H..
Tipo: Conference Paper
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20113f5cdc4&uri=/notices/prodinra1/2011/03/
Registros recuperados: 13
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