Chemical management of wheat diseases

Abstract

Controlling wheat diseases with fungicides should be based on the principles of integrated pest management (IPM). The decision which strategies and models of fungicide applications to use is in direct correlation with the specificity of the pathogen, weather conditions for their development and growth stages of plant. Since the spike, flag leaf and the leaf below flag leaf are bearers of the yield, it is necessary to preserve their viability as long as possible. The loss of green leaf area after the flag leaf emergence, influences the development of the crop and results in the reduction of grain weight, which is directly reflected in the yield and quality. In order to avoid the appearance of fungal resistance to individual active ingredients, applying the fungicides on wheat should be in accordance with the principles of the FRAC.

Zaštita pšenice od prouzrokovača oboljenja treba da se temelji na principima Integralne zaštite bilja. Izbor strategije i modela primene preparata u direktnoj je korelaciji sa specifičnošću patogena, vremenskim uslovima za njihov razvoj i fenofazama razvoja biljke. S obzirom da su klas, list zastavičar i list ispod zastavičara glavni nosioci prinosa, potrebno je sačuvati što duže njihovu vitalnost. Gubitak zelene lisne površine posle izbijanja lista zastavičara, utiče na razvoj zrna pšenice i ima za posledicu smanjenje njegove težine, što se direktno odražava na prinos i kvalitet. Pri primeni fungicida treba poštovati principe FRAC-a, kako bi se izbegla pojava rezistentnosti na pojedine aktivne supstance.