Leaf wetness duration (LWD) is one of the most important variables responsible of the development of plant diseases. Its measurement, then, represents the basis for disease forecasting models, developed and applied with the aim of timing fungicide application, for avoiding environmental damages, waste of resources and money losses. Despite of its importance, there is no standard for LWD measurement which has been widely accepted and different measurement principles, sensor designs and installation position are responsible for different results affecting the quality of model simulations. For this reason four leaf wetness sensors were mounted in a vineyard in two different positions, one quarter and three quarter of the canopy height, and in two expositions, East and West. Measured LWD was analysed and compared with visual inspections conducted during the experiment in order to establish the performance obtainable from different sensor positioning and to asses their impact on the simulation of grapevine downy mildew (Plasmopara viticola)
Influence of different sensor positions on leaf wetness duration measurements and their effect on the simulation of grapevine downy mildew (Plasmopara viticola) / A.Dalla Marta; S.Orlandini; M.Ghironi; F.Sabatini. - In: IDőJÁRÁS. - ISSN 0324-6329. - STAMPA. - 108:(2004), pp. 253-263.
Influence of different sensor positions on leaf wetness duration measurements and their effect on the simulation of grapevine downy mildew (Plasmopara viticola)
DALLA MARTA, ANNA;ORLANDINI, SIMONE;
2004
Abstract
Leaf wetness duration (LWD) is one of the most important variables responsible of the development of plant diseases. Its measurement, then, represents the basis for disease forecasting models, developed and applied with the aim of timing fungicide application, for avoiding environmental damages, waste of resources and money losses. Despite of its importance, there is no standard for LWD measurement which has been widely accepted and different measurement principles, sensor designs and installation position are responsible for different results affecting the quality of model simulations. For this reason four leaf wetness sensors were mounted in a vineyard in two different positions, one quarter and three quarter of the canopy height, and in two expositions, East and West. Measured LWD was analysed and compared with visual inspections conducted during the experiment in order to establish the performance obtainable from different sensor positioning and to asses their impact on the simulation of grapevine downy mildew (Plasmopara viticola)I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.