Organic EprintsEffect of organic, low-input and conventional production systems on yield and diseases in winter barleyJ. M.CooperauthorC. S.SchmidtauthorL.LueckauthorP. N.ShottonauthorC.TurnbullauthorC.LeifertauthorThe effect of organic, low-input and conventional management practices on barley yield and disease incidence was assessed in field trials over two years. Conventional fertility management (based on mineral fertiliser applications) and conventional crop protection (based on chemosynthetic pesticides) significantly increased the yield of winter barley as compared to organic fertility and crop protection regimes. Severity of leaf blotch (Rhynchosporium secalis) was highest under organic fertility and crop protection management and was correlated inversely with yield. For mildew (Erysiphe graminis), an interaction between fertility management and crop protection was detected. Conventional crop protection reduced severity of the disease, only under conventional fertility management. Under organic fertility management, incidence of mildew was low and application of synthetic pesticides in “low input” production systems had no significant effect on disease severity.Crop health, quality, protection Cereals, pulses and oilseeds2007Conference paper, poster, etc.

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