4.7 Article

Disentangling weed diversity and weather impacts on long-term crop productivity in a wheat-legume rotation

Journal

FIELD CROPS RESEARCH
Volume 232, Issue -, Pages 24-29

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.fcr.2018.12.005

Keywords

Nonlinear; Crop yield; Self-regulation; Temperature; Precipitation; Crop management; Time series

Categories

Funding

  1. FEDER (European Regional Development Funds)
  2. Spanish Ministry of Economy and Competitiveness funds [AGL2015-64130R]
  3. OECD Cooperative Research Programme: Biological Resource Management for Sustainable Agricultural Systems in 2017

Ask authors/readers for more resources

Weeds can harm crop growth and yield by competing for light, water, and nutrients and can produce high global potential yield losses if not controlled. However, the effects of weed diversity have not been fully examined. Here, we have used long-term data (31 years) of a cereal legume rotation from a locality in central Spain to determine the importance of internal and external (weather and weed diversity) factors on crop yield. We used a novel methodology based on dynamic systems to explore how weed diversity and weather factors interact with crop yields. The dynamic model used here integrated internal and external factors with additive or non-linear variants. We showed that internal processes (self-regulation) are involved in wheat and legume yield temporal fluctuations. The self-regulation of crop production appears to be stronger in cereal (85%) than in legume (45%) systems, and therefore legumes seem to be more sensitive to external variations. The legume crop was not affected by weed diversity but was instead negatively influenced by average temperature for the growing season. In wheat, there was a negative, non-linear response of yield to the interaction between richness and minimum temperature for the growing season. An improved understanding of the influence of weed diversity on crop yield may help to anticipate the effects of climate change and guide management practices to maintain crop productivity under sustainable agriculture.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available