Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 110
... beetle numbers were carried out until March 1985 . Sample plants were removed monthly to check for eggs , larvae and pupae . Beetle numbers increased five - fold in the first season and a further three - fold in the second year . During ...
... beetle numbers were carried out until March 1985 . Sample plants were removed monthly to check for eggs , larvae and pupae . Beetle numbers increased five - fold in the first season and a further three - fold in the second year . During ...
Page 112
... more plants died in the beetle infested cages than in the uninfested cages , so some plant deaths were attributable to beetle damage . 113 While beetle populations under caged conditions may be artifically Biological Control 12 112.
... more plants died in the beetle infested cages than in the uninfested cages , so some plant deaths were attributable to beetle damage . 113 While beetle populations under caged conditions may be artifically Biological Control 12 112.
Page 113
113 While beetle populations under caged conditions may be artifically high , survival of ragwort plants may also be enhanced . If the ragwort flea beetle can cause plant deaths under these conditions , then under field conditions ...
113 While beetle populations under caged conditions may be artifically high , survival of ragwort plants may also be enhanced . If the ragwort flea beetle can cause plant deaths under these conditions , then under field conditions ...
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