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ACKNOWLEDGEMENTS activity adult aphid appeared application asparagus assessed baits beetle block caused chemical clover compared crop cultivars damage DISCUSSION disease early effect emergence establishment experiments feeding field flowering formulation four fruit fungicide gave glyphosate gorse grass grub grazing growth harvest herbicides increased indicated infection insecticide INTRODUCTION kg/ha larvae late leaf leaves less lucerne Mean METHODS months N.Z. Weed North numbers observed occurred P.O. Box pasture period Pest Control Conf plants plots populations present Private Proc production programme rates recorded reduced REFERENCES replicates reported Research residues root rust ryegrass samples season seed seedlings selected showed shown significant significantly similar soil species spray spring stage stem SUMMARY summer Table tested thistle tolerance traps treated treatments trial untreated Weed and Pest weed control weeks weevil weight yield Zealand