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Control of barley yellow dwarf virus BYDV disease of barley in mid
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1NTRODUCT1ON 40th N.Z. Weed adult aethiopoides apple application asparagus assessed atrazine Auckland barley BYDV Canterbury captafol chemical Chilean needle grass clopyralid crop cultivars cyhexatin D1SCUSS1ON damage density diameter diazinon dichlorvos discoideus disease dormant buds DS1R effect eggs field rate flowers fungicides g ai/100 litres gastropod glyphosate Goldson grass grub harvest Hawkes Bay herbicides increased infection insecticide kg ai/ha kiwifruit larvae Lincoln College linuron lucerne mancozeb mefluidide metalaxyl metiram metribuzin miticides mortality nectarines nodding thistle numbers orchards organotin oryzalin P.O. Box paclobutrazol parasitoid pasture perennial ryegrass persimilis Pest Control Conf pesticide pesticide resistance plots population predator Proc prochloraz programme propiconazole reduced replicates Research resistance management samples season seed seedlings significantly Silwet L77 simazine sitona soil species spray stages surface swards Table tamarillo temperature terbuthylazine thrips tiller toxicity translocation treatment trees triadimenol trial uptake Weed and Pest weed control weevil whitefly yield Zealand