Proceedings of the New Zealand Weed and Pest Control Conference

acre activity Agriculture annual aphid appear application areas assessment atrazine barley grass carbetamide carried cause chemical clover compared cost crop damage dead Department diazinon differences DISCUSSION early effect emergence established Experiment factors farm farmers fensulfothion field formulations further gave give given grain granules grass grub grazing growth height herbicides important included increase indicated infestation insecticide larvae less lines lodging loss lower lucerne maize materials matter means measured method mixture North observed obtained occurred P.O. Box paddock paraquat pasture period Pest plants plots population porina possible present problem Proc production rainfall rates recorded reduced reported Research residual response ryegrass samples season seed showed shown significant soil species spraying spring stage standard Summary surface Table tion tolerance treated treatment trials variety weed control weeks yield Zealand