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Annual weeds in established lucerne T P Palmer
Lucerne insect survey K G Somerfield and P A Burnett
Preliminary studies of chemical control of bluegreen lucerne aphid
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activity adults Agricultural aphid appeared application areas assessed atrazine autumn barley grass beetle caused chemical clover compared counts crop cultivars damage DISCUSSION disease early effect emergence established ethofumesate experiment field four further gave germination growing growth grub Hamilton harvest herbicides higher increased indicate infestation insecticide INTRODUCTION kg/ha larvae leaf leaves less lotus lower lucerne major material mean measured method months N.Z. Weed North numbers oats occurred P.O. Box pasture period Pest Control Conf phorate plants plots population present Proc production rates recorded reduced REFERENCES replicates reported Research residual resistant root ryegrass samples season seed seedlings selected showed shown significant significantly similar soil sowing sown species spraying spring stage stem studies suggest Summary summer Table tested treated treatments trials untreated Weed and Pest weed control weeks weevil weight white clover yield Zealand