Spatiotemporal Dynamics of Stress Factors in Crops

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Plant stresses, in particular fungal diseases, basically show a high variability in space and time with respect to their impact on the host. Recent Precision Agriculture techniques allow for a spatially and temporally adjusted pest control that might reduce the amount of cost-intensive and ecologically harmful agrochemicals. Conventional stress detection techniques such as random monitoring do not meet demands of such optimally placed management actions. The prerequisite is a profound knowledge about the controlled phenomena as well as their accurate sensor-based detection. Therefore, the present studies focused on spatiotemporal dynamics of stress factors in wheat, Europes main crop. Primarily, the spatiotemporal characteristics of the fungal diseases, powdery mildew (Blumeria graminis) and leaf rust (Puccinia recondita), were analysed by remote sensing techniques and geo-statistics on leaf and canopy scale.