Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 81
Good grass control ( less than 50 % ground cover ) was obtained for approximately 20 weeks . Some tree mortality ( 10-15 % ) was observed . INTRODUCTION Hexazinone use in forestry has increased steadily since its introduction a decade ...
Good grass control ( less than 50 % ground cover ) was obtained for approximately 20 weeks . Some tree mortality ( 10-15 % ) was observed . INTRODUCTION Hexazinone use in forestry has increased steadily since its introduction a decade ...
Page 83
Interception by the ground cover species ( mainly grasses ) was much higher ( up to 40 % ) , but the amount of herbicide present in the tissues declined rapidly ( Table 2 ) . Trends in interception of the three formulations by the ...
Interception by the ground cover species ( mainly grasses ) was much higher ( up to 40 % ) , but the amount of herbicide present in the tissues declined rapidly ( Table 2 ) . Trends in interception of the three formulations by the ...
Page 144
Ground speed was kept constant at 4.1 km / hr for all treatments . Air Velocities Spray droplet size , velocity , and the nature and shape of the target are interrelated with respect to the resulting spray coverage .
Ground speed was kept constant at 4.1 km / hr for all treatments . Air Velocities Spray droplet size , velocity , and the nature and shape of the target are interrelated with respect to the resulting spray coverage .
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Contents
Author Index | 9 |
PASTURE PESTS | 15 |
Field testing of seed protectants against black field cricket attack | 22 |
Copyright | |
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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