Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 123
... samples were again taken from the same lucerne stand on 10.4.86 , 28.5.86 and 7.6.86 . At the time of collection , field population densities of the weevil were measured by taking 20-30 , 0.2 m2 , litter samples using a modified high ...
... samples were again taken from the same lucerne stand on 10.4.86 , 28.5.86 and 7.6.86 . At the time of collection , field population densities of the weevil were measured by taking 20-30 , 0.2 m2 , litter samples using a modified high ...
Page 134
... samples were removed from each treatment vine for assessment of greedy scale mortality and residue analysis . Samples were collected at fortnightly intervals over 2 months . A pre - spray sample was also taken to assess stage ...
... samples were removed from each treatment vine for assessment of greedy scale mortality and residue analysis . Samples were collected at fortnightly intervals over 2 months . A pre - spray sample was also taken to assess stage ...
Page 139
... samples showed a steady increase in infestation levels as the season progressed , and fruit samples showed an increasing infestation from mid - February onwards . Mean crawler numbers over all sampling occasions varied appreciably ...
... samples showed a steady increase in infestation levels as the season progressed , and fruit samples showed an increasing infestation from mid - February onwards . Mean crawler numbers over all sampling occasions varied appreciably ...
Contents
Author Index | 9 |
PASTURE PESTS | 15 |
Field testing of seed protectants against black field cricket attack | 22 |
Copyright | |
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39th N.Z. Weed adult alachlor aphid application asparagus assessed atrazine beetle benomyl biological control buprofezin BYDV Californian thistle captafol chemicals chlorpyrifos clopyralid cover crawlers crop damage density diazinon discoideus disease DSIR effect eggs fensulfothion field foliage formulation fruit fungicides glyphosate gorse grass grub greedy scale growers growth haloxyfop EE harvest herbicides hexazinone increased infested insect insecticide insensitive instar kg ai/ha kiwifruit larvae leaf litres litres/ha lucerne metalaxyl metsulfuron mg ai/litre miticides mortality nematodes numbers orchard P.O. Box Palmerston North paraquat parasite pasture pathogens persimilis Pest Control Conf pesticides plants plots population porina Proc prochloraz ragwort rates reduced regrowth replicates Research residues root Ruakura ryegrass samples season seed treatments seedlings significant significantly Silwet Sitona soil spears species spray sprayer surfactant Table tamarillo tested trees trials trifluralin untreated control vinclozolin vines Weed and Pest weed control weeks whitefly yield Zealand