Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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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
Formulation 24 h after applicationt 2 weeks after applicationt Foliage Roots Surface wash Roots Surface wash Foliage liquid powder granules 115.6 ( 14.5 ) * 10.1 ( 2.8 ) 84.7 ( 13.3 ) 7.9 ( 0.87 ) 1.1 ( 1.1 ) 0.47 ( 0.33 ) 0 0 0 0.10 ...
Formulation 24 h after applicationt 2 weeks after applicationt Foliage Roots Surface wash Roots Surface wash Foliage liquid powder granules 115.6 ( 14.5 ) * 10.1 ( 2.8 ) 84.7 ( 13.3 ) 7.9 ( 0.87 ) 1.1 ( 1.1 ) 0.47 ( 0.33 ) 0 0 0 0.10 ...
Page 197
This was followed by a directed spray of bromacil ( Hyvar X ) at 1.6 kg ai / ha to achieve the long term weed control for the rest of the growing season , except for the 12 week treatment which was treated with diuron at 2 kg ai / ha .
This was followed by a directed spray of bromacil ( Hyvar X ) at 1.6 kg ai / ha to achieve the long term weed control for the rest of the growing season , except for the 12 week treatment which was treated with diuron at 2 kg ai / ha .
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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 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