Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 148
The short life cycle enables rapid infestation of crops by adults and all stages are continuously present . Control is extremely difficult as tolerant stages are present at the start and end of the life cycle .
The short life cycle enables rapid infestation of crops by adults and all stages are continuously present . Control is extremely difficult as tolerant stages are present at the start and end of the life cycle .
Page 163
At harvest TSM was present on 4 % of leaves . On two strawberry runner fields at Katikati , which received regular miticides through the season TSM was present on 33 % and 43 % of the leaves at harvest . In 1984/85 at Katikati TSM ...
At harvest TSM was present on 4 % of leaves . On two strawberry runner fields at Katikati , which received regular miticides through the season TSM was present on 33 % and 43 % of the leaves at harvest . In 1984/85 at Katikati TSM ...
Page 224
INTRODUCTION Three main insect pests of cabbage are present in New Zealand . These are white butterfly ( Artogeia rapae ( L. ) ) , diamondback moth ( Plutella xylostella ( L. ) ) and cabbage aphid ( Brevicoryne brassicae ( L. ) ) .
INTRODUCTION Three main insect pests of cabbage are present in New Zealand . These are white butterfly ( Artogeia rapae ( L. ) ) , diamondback moth ( Plutella xylostella ( L. ) ) and cabbage aphid ( Brevicoryne brassicae ( L. ) ) .
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Contents
Author Index | 9 |
PASTURE PESTS | 15 |
Field testing of seed protectants against black field cricket attack | 22 |
Copyright | |
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activity adult aphid application asparagus assessed Auckland block caused Centre chemicals clopyralid compared counts cover crop damage density DISCUSSION disease DSIR effect eggs emergence establishment experiments field formulation four fruit fungicides gave glyphosate gorse grass grass grub ground growth Hamilton harvest height herbicide higher important increased indicated infested insect insecticide kg ai/ha larvae leaf leaves less levels lower lucerne March Mean measured METHODS months mortality North numbers observed occurred P.O. Box pasture Pest Control Conf plants plots population present Private Proc production pupae ragwort range rates reduced REFERENCES replicates reported Research residues root ryegrass samples scale season seed seedlings showed significant significantly similar soil spears species spray spring stage stem Table tested thistle treated treatments trees trials untreated vines Weed and Pest weed control weeks weevil whitefly yield Zealand