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
Trends in interception of the three formulations by the ground cover species
observed were similar to those for radiata pine seedlings . After 2 weeks the
maximum amount recovered represented only 2 % of the amount applied . Little
or no ...
Trends in interception of the three formulations by the ground cover species
observed were similar to those for radiata pine seedlings . After 2 weeks the
maximum amount recovered represented only 2 % of the amount applied . Little
or no ...
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 . The velocity of small
spray ...
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 . The velocity of small
spray ...
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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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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