Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 47
Herbicide Seed yield Rate ( kg ai / ha ) Weed cover ( % ) Seedlings / m2 June Crop injury ( % ) kg / ha asulam 0.75 1.50 2.25 6 1 1 103 82 83 3 10 25 580 700 500 ethofumesate 4 2 1 78 100 88 440 530 560 0.5 1.0 1.5 1.0 2.0 3.0 ...
Herbicide Seed yield Rate ( kg ai / ha ) Weed cover ( % ) Seedlings / m2 June Crop injury ( % ) kg / ha asulam 0.75 1.50 2.25 6 1 1 103 82 83 3 10 25 580 700 500 ethofumesate 4 2 1 78 100 88 440 530 560 0.5 1.0 1.5 1.0 2.0 3.0 ...
Page 101
3.1 kg ai / ha . ' Irette ' osier's response was very highly significant and 94 % of the variation was accounted for by a quadratic equation whose parabola peaked at 3.9 kg ai / ha . Why there should be a small though significant ...
3.1 kg ai / ha . ' Irette ' osier's response was very highly significant and 94 % of the variation was accounted for by a quadratic equation whose parabola peaked at 3.9 kg ai / ha . Why there should be a small though significant ...
Page 204
When applied either after ' closing up ' in December , or after fern removal in June , neither dicamba nor clopyralid at 0.6 kg ai / ha reduced yield or quality of spears in two successive harvest seasons . Information was gained on the ...
When applied either after ' closing up ' in December , or after fern removal in June , neither dicamba nor clopyralid at 0.6 kg ai / ha reduced yield or quality of spears in two successive harvest seasons . Information was gained on the ...
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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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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