Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 15
CONTROL OF GRASS GRUB BY FOUR TYPES OF ROLLER K.M. STEWART and R.F. VAN TOOR Invermay Agricultural Research Centre , Private Bag , Mosgiel SUMMARY Four types of heavy roller were tested for the control of grass grub ( Costelytra ...
CONTROL OF GRASS GRUB BY FOUR TYPES OF ROLLER K.M. STEWART and R.F. VAN TOOR Invermay Agricultural Research Centre , Private Bag , Mosgiel SUMMARY Four types of heavy roller were tested for the control of grass grub ( Costelytra ...
Page 33
Endophyte - infected ryegrass conferred no resistance against stem weevil attack to the companion grass species . These species acted as hosts for stem weevil with larvae transferring to infected ryegrass , causing considerable tiller ...
Endophyte - infected ryegrass conferred no resistance against stem weevil attack to the companion grass species . These species acted as hosts for stem weevil with larvae transferring to infected ryegrass , causing considerable tiller ...
Page 194
However , total season grass / clover DM production in the 2,4 - D treatments was 1000 kg / ha less than that from each of the paraquat treatments when nitrogen was added . The addition of nitrogen increased grass DM yields in all ...
However , total season grass / clover DM production in the 2,4 - D treatments was 1000 kg / ha less than that from each of the paraquat treatments when nitrogen was added . The addition of nitrogen increased grass DM yields in all ...
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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 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 kill 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