Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 86
The trees used were 9 to 10 month - old radiata pine seedlings transplanted at 0.5 x 0.5 m spacing . ... High rates were used in Trial 1 ( 6 , 10 and 14 kg ai / ha ) to ensure that significant tree damage occurred .
The trees used were 9 to 10 month - old radiata pine seedlings transplanted at 0.5 x 0.5 m spacing . ... High rates were used in Trial 1 ( 6 , 10 and 14 kg ai / ha ) to ensure that significant tree damage occurred .
Page 87
Both survival and height increment of covered trees were greater than for exposed trees with the two sprayed formulations . This strongly suggests that foliar uptake is an important source of tree damage with sprayed formulations of ...
Both survival and height increment of covered trees were greater than for exposed trees with the two sprayed formulations . This strongly suggests that foliar uptake is an important source of tree damage with sprayed formulations of ...
Page 104
104 SUMMER RELEASE SPRAYING OF BLACK WALNUT B.J. COSSLETT Forest Research Institute , Christchurch SUMMARY Winter spray releasing of black walnut ( Juglans nigra ) is not always sufficient to keep trees weed - free throughout the summer ...
104 SUMMER RELEASE SPRAYING OF BLACK WALNUT B.J. COSSLETT Forest Research Institute , Christchurch SUMMARY Winter spray releasing of black walnut ( Juglans nigra ) is not always sufficient to keep trees weed - free throughout the summer ...
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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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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