Proceedings of the New Zealand Weed and Pest Control Conference1989 - Pesticides |
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Page 52
... Weevils collected from this site have since been released at a further 28 sites throughout New Zealand . Preliminary assessment has shown that the crown weevil will complete development on the rosettes of nodding , winged , slender ...
... Weevils collected from this site have since been released at a further 28 sites throughout New Zealand . Preliminary assessment has shown that the crown weevil will complete development on the rosettes of nodding , winged , slender ...
Page 54
... weevil , but there were no larvae in cotton ( Onopordum acanthium L. ) , variegated ( Silybum marianum ( L. ) Gaertn . ) or Californian ( Cirsium arvense ( L. ) Scop . ) thistles . During this trial it was noted that damaged crowns and ...
... weevil , but there were no larvae in cotton ( Onopordum acanthium L. ) , variegated ( Silybum marianum ( L. ) Gaertn . ) or Californian ( Cirsium arvense ( L. ) Scop . ) thistles . During this trial it was noted that damaged crowns and ...
Page 238
... weevil in asparagus during the harvest period . Several organophosphate insecticides had moderate to high activity against adult garden weevil but generally failed to sufficiently reduce the percentage of spears damaged . In a field ...
... weevil in asparagus during the harvest period . Several organophosphate insecticides had moderate to high activity against adult garden weevil but generally failed to sufficiently reduce the percentage of spears damaged . In a field ...
Contents
Author Index | 9 |
Resource allocations for future weed control activities | 15 |
The role of government research in achieving safe pest management | 32 |
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Common terms and phrases
42nd N.Z. Weed activity adult aphid application armyworm assessed Auckland bees biological control Canterbury carbaryl Centre chemical chlorpyrifos chlorsulfuron Christchurch clethodim clover croceipes crops cyproconazole damage days after spraying densities diazinon diclofop-methyl disease DSIR effect fenitrothion field foliage fruit fly fungicides g ai/ha g/ha Gisborne glyphosate grass grub greedy scale growth Hawkes Bay herbicide increased infection periods insecticides instar kg/ha kiwifruit laboratory larvae latania latania scale leaf levels lime sulphur Lincoln litres lucerne MAFTech mancozeb MCPA Melittobia metiram mites mortality nodding thistle P.O. Box Palmerston North parasitoid pasture Pest Control Conf pesticide pirimicarb plants plots populations powdery mildew predator Private Bag Proc prochloraz programme propiconazole pyri rainfall rates reduced replicates residues resistance Ruakura ryegrass sampling season seed significant significantly soil species surface surfactant Table tested toxicity treatment tree trial triclopyr untreated Weed and Pest weed control weevil yield Zealand