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Results of researches carried out in 2000 and 2001 have demonstrated, that main factors determining yield of winter wheat are: agrotechnical measures, mainly proper choice of field, optimal nitrogen fertilization as well as choice of cultivar well adapted to local climatic conditions. Chemical protection of winter wheat affects first of all stability of yield. Regular inspections of fields with special account to present phytosanitary situation, thresholds of noxiousness and expected development of disease and pest populations should decide on the need of chemical treatments.

Winter wheat protection against diseases and pests in conventional programme of crop protection and in integrated pest management