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N G Beck and P J Cameron
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activity adult Agricultural analysis apple application asparagus assessed block Canterbury catches chemical clover collected compared concentration containing crops cultivars damage determined disease DSIR effect emergence established et al experiments field four fruit gorse grass growth harvest herbicides important increased indicated infestation insecticide insects instar kg/ha larvae leaf leafroller leaves levels Lincoln loss lower mean method mite mortality moth N.Z. Weed natural nematodes nodding thistle North orchard organic P.O. Box parasitoid pasture period Pest Control Conf pheromone plants plots populations present Private Proc production programme Protection pupae range rates reduced release reported Research residual resistance ryegrass samples scale season seed seedlings selection showed significant significantly soil species spray stages strains Table Technology temperatures tested toxicity traps treated treatment trees trials untreated values Weed and Pest weeks weevil yield Zealand