Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 123
Sample sizes ranged from 30 - 50 weevils depending on their availability . To test
for variability in infection levels from season to season , samples were again
taken from the same lucerne stand on 10 . 4 . 86 , 28 . 5 . 86 and 7 . 6 . 86 .
Sample sizes ranged from 30 - 50 weevils depending on their availability . To test
for variability in infection levels from season to season , samples were again
taken from the same lucerne stand on 10 . 4 . 86 , 28 . 5 . 86 and 7 . 6 . 86 .
Page 134
2 Following spray application , twig samples were removed from each treatment
vine for assessment of greedy scale mortality and residue analysis . Samples
were collected at fortnightly intervals over 2 months . A pre - spray sample was
also ...
2 Following spray application , twig samples were removed from each treatment
vine for assessment of greedy scale mortality and residue analysis . Samples
were collected at fortnightly intervals over 2 months . A pre - spray sample was
also ...
Page 139
Unpublished data from leaf samples showed a steady increase in infestation
levels as the season progressed , and fruit ... Mean crawler numbers over all
sampling occasions varied appreciably between band sites and between
sampling ...
Unpublished data from leaf samples showed a steady increase in infestation
levels as the season progressed , and fruit ... Mean crawler numbers over all
sampling occasions varied appreciably between band sites and between
sampling ...
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Contents
Presidential Address | 13 |
Effect of application volume and spray additive concentration on the control | 89 |
The effect of metsulfuron on sweet brier M McD Turner G Iggo | 95 |
Copyright | |
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Common terms and phrases
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