Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 85
INTRODUCTION The activity of hexazinone on a wide variety of herbaceous , woody and semiwoody annual and perennial weeds of importance in forest establishment has been observed by several authors ( Bowers and Porter 1975 ...
INTRODUCTION The activity of hexazinone on a wide variety of herbaceous , woody and semiwoody annual and perennial weeds of importance in forest establishment has been observed by several authors ( Bowers and Porter 1975 ...
Page 232
TABLE 2 : Longevity and fate of root tips as observed from a rhizotron . Number of root tips observed Mean length Percentage damaged by invertebrate feeding Mean longevity of root tips 287 2.7 cm 50.9 14.6 days ( range 3-46 ) RESULTS A ...
TABLE 2 : Longevity and fate of root tips as observed from a rhizotron . Number of root tips observed Mean length Percentage damaged by invertebrate feeding Mean longevity of root tips 287 2.7 cm 50.9 14.6 days ( range 3-46 ) RESULTS A ...
Page 233
Some fauna observed from the rhizotron were not found in a parallel coring / heat extraction study , notably the Diplura and slugs ( Carpenter 1985 ) . Conversely mites were seldom observed but were common in the coring study .
Some fauna observed from the rhizotron were not found in a parallel coring / heat extraction study , notably the Diplura and slugs ( Carpenter 1985 ) . Conversely mites were seldom observed but were common in the coring study .
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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