Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 15
A conventional 10 tonne agricultural roller gave no significant grass grub
mortality or pasture yield increase . The other rollers which were specially
constructed for grass grub control , gave from 35 % to 53 % reduction in grass
grub numbers ...
A conventional 10 tonne agricultural roller gave no significant grass grub
mortality or pasture yield increase . The other rollers which were specially
constructed for grass grub control , gave from 35 % to 53 % reduction in grass
grub numbers ...
Page 17
Analysis Analysis of variance of grass grub density was performed after
transformation of data to natural logarithms . The LSR ( Table 1 ) is the back -
transformed least significant difference between the means of loge transformed
data .
Analysis Analysis of variance of grass grub density was performed after
transformation of data to natural logarithms . The LSR ( Table 1 ) is the back -
transformed least significant difference between the means of loge transformed
data .
Page 19
THE TIME OF ROLLING FOR CONTROL OF GRASS GRUB R . F . VAN TOOR
and K . M . STEWART Invermay Agricultural Research Centre , Private Bag ,
Mosgiel SUMMARY Heavy rolling of pasture in March , April , May and August
was ...
THE TIME OF ROLLING FOR CONTROL OF GRASS GRUB R . F . VAN TOOR
and K . M . STEWART Invermay Agricultural Research Centre , Private Bag ,
Mosgiel SUMMARY Heavy rolling of pasture in March , April , May and August
was ...
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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