The ban on the use of neonicotinoids means that prophylactic measures for beetroot crops need to be rethought. One possible lever is to increase the natural control of green aphids, which are the vectors of yellows, through appropriate landscape management. We have developed a spatially explicit model to explore the potential effects of deploying agroecological infrastructures, diversifying crop rotation or reducing plot size on the distribution of green aphids and the incidence of yellows in beet crops at landscape scale. Climatic conditions and pesticide treatments are taken into account, and the results of the first simulations are consistent with the expert knowledge used. Ultimately, the model will be used to explore the levels of aphid control by crop diversity and by their natural enemies at different scales (plot, farm, territory). The results will be used to discuss with stakeholders the conditions for deploying new management methods in agricultural areas.