0000000000984644

AUTHOR

Florent Abiven

showing 3 related works from this author

Effects of species and soil-nitrogen availability on root system architecture traits - study on a set of weed and crop species

2017

Better managing crop : weed competition in cropping systems while reducing both nitrogen and herbicide inputs is a real challenge that requires a better understanding of crop and weed root architecture in relation to soil-nitrogen availability. An original approach was used which considered the parameters of a simulation model of root architecture as traits to analyse (a) the interspecific diversity of root system architecture, and (b) its response to soil-nitrogen availability. Two greenhouse experiments were conducted using three crop and nine weed species grown at two contrasted concentrations of soil-nitrogen availability. Plant traits were measured to characterise both overall plant gr…

0106 biological sciences2. Zero hungerBiomass (ecology)media_common.quotation_subjectfood and beverages04 agricultural and veterinary sciencesRoot systemInterspecific competition15. Life on landBiology01 natural sciencesCompetition (biology)CropAgronomy040103 agronomy & agricultureTrait0401 agriculture forestry and fisheriesBiological regulationWeedAgronomy and Crop Science010606 plant biology & botanymedia_commonAnnals of Applied Biology
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Comment expliquer l’avantage compétitif des espèces adventices nitrophiles dans les systèmes de cultures conventionnels ?

2013

Plant nitrophily/oligotrophy provides information on the nitrogen richness of their natural habitat. It plays a key role in structuring weed communities. Based on an ecophysiological analysis of the ecological character of nitrophily, our main goal was to better understand the success of nitrophilic weed species and the decline of oligotrophic ones in conventional cropping systems which are characterized by an abundant use of nitrogen fertilizers. A greenhouse experiment was conducted using a range eleven weed and crop species contrasted for their nitrophily status and grown at two different soil-nitrogen concentrations. We show that, compared to an oligotrophic species, a nitrophilic speci…

[SDV] Life Sciences [q-bio][SDE] Environmental Sciences[SDV]Life Sciences [q-bio][SDE]Environmental Sciences[SDV.BV]Life Sciences [q-bio]/Vegetal Biology[SDV.BV] Life Sciences [q-bio]/Vegetal Biologynutrition carbonéesurface foliairenutrition azotéecroissance
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L’architecture racinaire des adventices en relation avec la disponibilité en azote du sol

2017

EASPEGESTAD INRA; Mieux gérer la compétition culture : adventice dans des systèmes de culture moins dépendants de l’azote minéral et des herbicides nécessite de mieux connaître l’architecture racinaire des cultures et des adventices en lien avec la disponibilité en azote du sol. Pour cela, nous avons mené deux essais en serre sur douze espèces cultivées et adventices, cultivées à deux concentrations contrastées en azote du sol. Nous avons utilisé les paramètres d’un modèle d’architecture racinaire comme traits pour comparer les espèces et analyser la réponse de l’architecture racinaire à la disponibilité en azote. Les traits racinaires étudiés sont variables entre les espèces mais peu affec…

[SDV] Life Sciences [q-bio]racineazotetrait[ SDV ] Life Sciences [q-bio][SDV]Life Sciences [q-bio]compétitionadventice
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