Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 47
In contrast the ground area covered with weeds in the tall fescue crop in June
was much lower ( 25 % ) ( Table 3 ) . The main weed species were annual poa
and twincress , with fumitory ( Fumaria officinalis L . ) occurring in the browntop
trial .
In contrast the ground area covered with weeds in the tall fescue crop in June
was much lower ( 25 % ) ( Table 3 ) . The main weed species were annual poa
and twincress , with fumitory ( Fumaria officinalis L . ) occurring in the browntop
trial .
Page 89
In two trials to control bracken Richardson et al ( in press ) and Ray ( unpublished
) found that a higher percentage of the applied spray was retained on the foliage
when glyphosate was applied in lower rather than higher water volumes .
In two trials to control bracken Richardson et al ( in press ) and Ray ( unpublished
) found that a higher percentage of the applied spray was retained on the foliage
when glyphosate was applied in lower rather than higher water volumes .
Page 262
This difference in parasitism rate was due to a lower percentage parasitism of
larvae collected from the ground layer of weedy compared with weed - free plots .
Percentage parasitism of larvae collected from maize plants was the same in
both ...
This difference in parasitism rate was due to a lower percentage parasitism of
larvae collected from the ground layer of weedy compared with weed - free plots .
Percentage parasitism of larvae collected from maize plants was the same in
both ...
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Contents
Presidential Address | 13 |
Effect of application volume and spray additive concentration on the control | 89 |
The effect of metsulfuron on sweet brier M McD Turner G Iggo | 95 |
Copyright | |
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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