Disentangling the effect of nitrogen input and weed control on crop–weed competition suggests a potential agronomic trap in conventional farming

Berquer, Adrien; Bretagnolle, Vincent; Martin, Olivier; Gaba, Sabrina

doi:10.1016/j.agee.2022.108232

Cited by 9 publications

(2 citation statements)

References 62 publications

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“…A possible explanation for that in the competitiveness ranking between rotations could be partly due to differences in nitrogen (N) supply. Nitrogen is an important resource that strongly influences crop-weed competition [29][30][31] since high levels of N supply change both crop growth and weed biomass. That circumstance could have altered the competitive status of the species from one crop to another.…”

Section: Resultsmentioning

confidence: 99%

Quantifying and Disentangling the Competition Effect of a Weed Community in a Long-Term Biennial Cereal-Legume Rotation

2023

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Weeds are a permanent constraint on crop productivity in agriculture. Due to the importance of the effect of weeds on the crop, there has been great interest in establishing the competitive ability of each species to optimize its control. This work presents a new methodology approach to determining the relative competitiveness of weed species based on population dynamics theory, which is applied to establish the competitiveness of Papaver rhoeas L. (PAP), Veronica hederifolia L. (VER), Descurainia sophia L. (DES) and Fumaria spp. (FUM) infesting a biennial cereal-legume rotation under conventional tillage. Data to fit the nonlinear population dynamic models were obtained from a long-term experiment (32 years) in Mediterranean drylands. The results showed asymmetric competitive interactions, and the competitive ability of weeds was crop specific. In cereals, the competitiveness ranking order was FUM > PAP > VER > DES, with strong interspecific competition; in legumes, it was VER > FUM > DES > PAP, with weak interspecific competition intensity. Overall, intraspecific competition was stronger than interspecific competition in the rotation system. The information gained in these studies can provide insights into the role of the intraspecific and interspecific competition in weed communities and help identify weed species that are relatively poor competitors in given crops.

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Section: Resultsmentioning

confidence: 99%

Quantifying and Disentangling the Competition Effect of a Weed Community in a Long-Term Biennial Cereal-Legume Rotation

2023

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“…No weeding compared to herbicides and manual hoeing resulted in lower values for all crop parameters except total weed dry weight ( Table 4 ). The increase of which would be largely related to the nitrogen applied which would have benefited nitrophilous weeds more than the crop [ 40 , 41 ]. Manual hoeing performed at 3–6 WAS did not reduce maize plant density.…”

Section: Discussionmentioning

confidence: 99%

Evaluating the effects of manual hoeing and selective herbicides on maize (Zea mays L.) productivity and profitability

Bin Lukangila,

Tabu,

Mugisho

et al. 2024

Heliyon

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Agroecological practices for sustainable weed management in Mediterranean farming landscapes

Boutagayout,

Bouiamrine,

Synowiec

et al. 2023

Environ Dev Sustain

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Disentangling the effect of nitrogen input and weed control on crop–weed competition suggests a potential agronomic trap in conventional farming

Cited by 9 publications

References 62 publications

Quantifying and Disentangling the Competition Effect of a Weed Community in a Long-Term Biennial Cereal-Legume Rotation

Quantifying and Disentangling the Competition Effect of a Weed Community in a Long-Term Biennial Cereal-Legume Rotation

Evaluating the effects of manual hoeing and selective herbicides on maize (Zea mays L.) productivity and profitability

Agroecological practices for sustainable weed management in Mediterranean farming landscapes

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