Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 105
Overall weed kill , tree health and weed species were assessed visually by five people independently and the majority opinion ( derived from the data sets ) was used as the score for each character assessed .
Overall weed kill , tree health and weed species were assessed visually by five people independently and the majority opinion ( derived from the data sets ) was used as the score for each character assessed .
Page 109
Percent control was assessed by classing each vine as alive or dead . 2 . High volume spraying using a No. 6 tip and 1700 kPa operating pressure , applied 4000 litre / ha spray . Foliage up to 4 m high was sprayed to point of run - off ...
Percent control was assessed by classing each vine as alive or dead . 2 . High volume spraying using a No. 6 tip and 1700 kPa operating pressure , applied 4000 litre / ha spray . Foliage up to 4 m high was sprayed to point of run - off ...
Page 151
Chemicals were applied ( as for Trial 1 ) at two rates ( Table 2 ) on 26 June 1985 and leaves were picked for larval and pupal mortality assessments 15 days later . Mortality was assessed from 10 of each stage / leaf and from two leaves ...
Chemicals were applied ( as for Trial 1 ) at two rates ( Table 2 ) on 26 June 1985 and leaves were picked for larval and pupal mortality assessments 15 days later . Mortality was assessed from 10 of each stage / leaf and from two leaves ...
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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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Common terms and phrases
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