Search results for "process-based model"
showing 2 items of 2 documents
Assembling and testing a generic phenological model to predict Lobesia botrana voltinism for impact studies.
2020
13 pages; International audience; The physiological development of insect pests is driven by temperature and photoperiod. Geographic variations in the speed of growth reflect current patterns in thermal conditions as a function of latitude and altitude. Global warming will likely lead to shifts in pests’ phenology. Insects are expected to overwinter earlier and develop more generations, with implications for the risks of damage to agricultural crops. Understanding and monitoring of the voltinism of insect pests will be increasingly important to anticipate critical phases of pest development and devise options for adapting pest control measures. In this study, we describe a new generic pheno…
Which nitrogen fertilization techniques and crop traits to promote biological weed regulation by competition?
2020
International audience; Background and AimsThe necessary reduction of herbicide use may result in a residual weed flora in arable fields. Moreover, the useof mineral fertilizer must be reduced for environmental reasons. Thus, crop-weed competition for nitrogen mightincrease.Nitrogen competition among plants is driven by soil nitrogen availability and plants traits related to nitrogen nutrition.Selecting species for their nitrogen nutrition traits and adapting nitrogen fertilization (rate, date, number ofnitrogen applications, straw burial or export) could change competitive relationships between plants. Weeds withhigh nitrogen nutrition requirements are often hard to manage and could be ham…