Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Results 1-3 of 61
Page 82
RESULTS AND DISCUSSION The level of grass control for the various
treatments achieved over a 25 - week period is shown in Fig . 1 . It took
approximately 2 weeks to achieve a 50 % reduction in ground cover ( due to
vegetation brown - off ...
RESULTS AND DISCUSSION The level of grass control for the various
treatments achieved over a 25 - week period is shown in Fig . 1 . It took
approximately 2 weeks to achieve a 50 % reduction in ground cover ( due to
vegetation brown - off ...
Page 83
TABLE 1 : Distribution of hexazinone on and within radiata pine seedlings — mg /
20 trees in plot ( mean of 3 plots ) . Formulation 24 h after application Surface
Foliage Roots wash 2 weeks after applicationt Surface Foliage Roots wash liquid
...
TABLE 1 : Distribution of hexazinone on and within radiata pine seedlings — mg /
20 trees in plot ( mean of 3 plots ) . Formulation 24 h after application Surface
Foliage Roots wash 2 weeks after applicationt Surface Foliage Roots wash liquid
...
Page 197
6 kg ai / ha to achieve the long term weed control for the rest of the growing
season , except for the 12 week treatment ... in September and weeds were
removed by hand hoeing when necessary up to 4 weeks before the start of the
treatment .
6 kg ai / ha to achieve the long term weed control for the rest of the growing
season , except for the 12 week treatment ... in September and weeds were
removed by hand hoeing when necessary up to 4 weeks before the start of the
treatment .
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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