Experiments to estimate parameters for the model FlorSys of weed species and their provenances from Northern Germany

Abstract

FlorSys is a model that aims to quantify the effects of the agricultural systems on the weed demography. With successful parameterization, it can be used to predict weed growth. FlorSys is a multi-species-model which was developed at INRA in Dijon (France). The model is based on the representation of the weed life cycle. The consecutive stages are connected by demographic functions with species-specific parameters. They are modified by the impact of the agricultural system, the interactions with environmental conditions and the measures against weeds. FlorSys can be used in a wide range of conditions. We want to test FlorSys as parameterized in Burgundy (France) in Northeastern Germany in order to check and improve its applicability here. Therefore, we will conduct trials for the parameter estimation of weed species in the next years. We will use species that have already been parameterized in order to compare different geographic sources, and to complement them with species which are important in Northern Germany. We introduce the FlorSys model and report about greenhouse and semi-field experiments.

Keywords

• base temperature
• FlorSys
• growth rate
• model
• morphology parameters
• population dynamics