Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 36
36 The initial production cut ( 30 October ) showed uniform grass production , with the individual grass components differing between plots by less than 15 % of the mean . The high tiller death was reflected in poor summer production ...
36 The initial production cut ( 30 October ) showed uniform grass production , with the individual grass components differing between plots by less than 15 % of the mean . The high tiller death was reflected in poor summer production ...
Page 39
Goldson et ( 1985 ) had earlier shown that by April even young ( one year ) lucerne production apparently completely recovers from severe spring ( November - December ) larval damage . Table 1 summarises such a recovery as measured in ...
Goldson et ( 1985 ) had earlier shown that by April even young ( one year ) lucerne production apparently completely recovers from severe spring ( November - December ) larval damage . Table 1 summarises such a recovery as measured in ...
Page 183
INTRODUCTION Weeds interfere with man's production of plants and animals thereby incurring costs ; the costs of weed control and of lost production . The former cost is easily assessed since the costs of herbicides , cultivation and ...
INTRODUCTION Weeds interfere with man's production of plants and animals thereby incurring costs ; the costs of weed control and of lost production . The former cost is easily assessed since the costs of herbicides , cultivation and ...
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Contents
Author Index | 9 |
PASTURE PESTS | 15 |
Field testing of seed protectants against black field cricket attack | 22 |
Copyright | |
31 other sections not shown
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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