Status-quo-Analyse des Pflanzenschutzmittel-Einsatzes in Feldkulturen der Bundesrepublik Deutschland 1991/92 : Teil 1: Kulturspezifische Analyse

An analysis of the use of plant protection products on the basis of stratified data of 1200 aggregated applications in 1991/92 shows that, on the average of all field crops (except sugar beet, oats, and maize) and on the average of all spheres of action: herbicides and fungicides (except insecticides and growth regulators), East German farms applied plant protection products to a smaller extent (in terms of frequency of application, amount of product and amount of active ingredient) than West German farms, owing to less rainfall and less specialization of farms with regard to field crops. The actual application rates fell on average 24 % short of the maximum authorized application rates (fungicides: 16 %, herbicides: 26 %, insecticides: 6 %, growth regulators: 52 % ). This indicates frequent use of reduced application rates (splitting, tank mixtures) and consideration of injury levels and decision models, i.e. pursuit of a directed chemical plant protection by farms.