Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
From inside the book
Results 1-3 of 13
Page 253
253 PIRIMICARB SPRAY TIMING FOR ROSE - GRAIN APHID CONTROL IN BARLEY M.W. STUFKENS and J.A. FARRELL Entomology Division , DSIR , Lincoln SUMMARY Optimum timing of pirimicarb application for the control of rosegrain aphid ( Metopolophium ...
253 PIRIMICARB SPRAY TIMING FOR ROSE - GRAIN APHID CONTROL IN BARLEY M.W. STUFKENS and J.A. FARRELL Entomology Division , DSIR , Lincoln SUMMARY Optimum timing of pirimicarb application for the control of rosegrain aphid ( Metopolophium ...
Page 254
Two peaks in aphid numbers occurred in sprayed plots before spraying , and after the period of effective insecticide cover on the foliage . Immediately after spraying numbers fell below 1 / tiller . Tables 1 and 2 show data on plant ...
Two peaks in aphid numbers occurred in sprayed plots before spraying , and after the period of effective insecticide cover on the foliage . Immediately after spraying numbers fell below 1 / tiller . Tables 1 and 2 show data on plant ...
Page 256
256 BARLEY YELLOW DWARF VIRUS AND APHID VECTORS IN CANTERBURY , 1983-85 M.W. STUFKENS and J.A. FARRELL Entomology Division , DSIR , Lincoln SUMMARY An outbreak of barley yellow dwarf virus ( BYDV ) in midCanterbury cereals in 1985-86 ...
256 BARLEY YELLOW DWARF VIRUS AND APHID VECTORS IN CANTERBURY , 1983-85 M.W. STUFKENS and J.A. FARRELL Entomology Division , DSIR , Lincoln SUMMARY An outbreak of barley yellow dwarf virus ( BYDV ) in midCanterbury cereals in 1985-86 ...
What people are saying - Write a review
We haven't found any reviews in the usual places.
Contents
Author Index | 9 |
PASTURE PESTS | 15 |
Field testing of seed protectants against black field cricket attack | 22 |
Copyright | |
31 other sections not shown
Other editions - View all
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