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Communication Dans Un Congrès Année : 2023

87. Evaluation of the competition between barley and different weed species in a controlled environment in relation to selective weed control

Christelle Gée
Annick Matejicek
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Bruno Chauvel

Résumé

The application of a site-specific herbicide is an effective way to contribute to environmental conservation. More can be done by also preserving biodiversity to control only highly competitive weeds that represent a minority of the varieties. In this study, the potential of visible imagery is evaluated to define the competitive ability of two categories of weeds, common and segetal, in the presence of a spring barley crop. Working in a controlled environment and two competitiveness traits, plant cover deduced from visible images and height, were estimated. Then, the competitive strategies for light were identified using the relative competitive performance index (RCP) for these two traits. A ranking according to their competitive power is proposed and compared to the literature. The results reveal that some segetal species such as Bromus secalinus showed a higher competitive ability than the common species in mesocosm’s conditions.

Domaines

Agronomie
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Dates et versions

hal-04159640 , version 1 (23-10-2023)

Identifiants

Citer

Christelle Gée, E.A. Veron Zarate, Annick Matejicek, Emmanuel Denimal, Bruno Chauvel. 87. Evaluation of the competition between barley and different weed species in a controlled environment in relation to selective weed control. 14th European Conference on Precision Agriculture, Jul 2023, Bologne, Italy. pp.693 - 700, ⟨10.3920/978-90-8686-947-3_87⟩. ⟨hal-04159640⟩
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