Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 130
Preliminary experiments showed that artificial infestations were more easily
established by placing egg batches rather than larvae onto plants . Eggs were
obtained from field collected larvae , pupae and moths . Known numbers of eggs
laid ...
Preliminary experiments showed that artificial infestations were more easily
established by placing egg batches rather than larvae onto plants . Eggs were
obtained from field collected larvae , pupae and moths . Known numbers of eggs
laid ...
Page 151
The effect of chemicals on eggs was assessed in Trial 2 with some egg eclosion
observed from all treatments . Hatched ... In the other treatments , nymphs may
have hatched but were usually found dead close to the egg shell . The efficacy of
...
The effect of chemicals on eggs was assessed in Trial 2 with some egg eclosion
observed from all treatments . Hatched ... In the other treatments , nymphs may
have hatched but were usually found dead close to the egg shell . The efficacy of
...
Page 245
Development times for egg to adult ranged from 10 days at 25°C to 50 days at 10
°C ( Table 1 ) . It has been estimated that the New Zealand flower thrips
completes a generation on sour cherry ( Prunus sp . ) in October in about 25 days
in ...
Development times for egg to adult ranged from 10 days at 25°C to 50 days at 10
°C ( Table 1 ) . It has been estimated that the New Zealand flower thrips
completes a generation on sour cherry ( Prunus sp . ) in October in about 25 days
in ...
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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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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