Winter wheat variety mixtures as an alternative for sustainable and ecological farming
Anna Tratwal
Abstract
The results of field experiments designed to evaluate epidemiological and economical effects of winter wheat cultivar mixture are presented. The aim of the studies was to evaluate the possibility of reduction of powdery mildew (Blumeria graminis f. sp. tritici) in mixtures compared to pure stands. The studies were carried out in two sites with different soil and meteorological conditions – Plant Protection Institute Research Station – Winna Góra (Wielkopolska region) and Plant Breeding Station Bąków (Opole District). Two winter wheat varieties, with different resistance levels to powdery mildew were used, namely; Finezja and Clever. In the experiment the impact of different winter wheat cultivars and their mixture was tested with different chemical control treatments on disease incidence and grain yield in the mixtures compared with pure stands.
In the studies 20–60% powdery mildew reductions in mixtures compared to pure stands were observed. Grain yield increase – 0.4 do 3.0 dt/ha in mixtures was also observed.
Keywords:
mixtures, powdery mildew, sustainable agricultureReferences
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