Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 34
There were 10 replicates of each treatment . ii ) Small plot studies Swards of ' Grasslands Roa ' tall fescue / endophyte ... in 1 x 0.5 m plots ( plastic troughs ) of sieved Horotiu sandy loam soil at Ruakura on 13 September 1985.
There were 10 replicates of each treatment . ii ) Small plot studies Swards of ' Grasslands Roa ' tall fescue / endophyte ... in 1 x 0.5 m plots ( plastic troughs ) of sieved Horotiu sandy loam soil at Ruakura on 13 September 1985.
Page 260
260 THE EFFECTS OF WEEDS ON ARMYWORM IN MAIZE M.G. HILL and D.J. ALLAN Entomology Division , DSIR , Private Bag , Auckland SUMMARY Plots of maize ( Zea mays ) plants were grown under weedy and weedfree conditions to see if weeds ...
260 THE EFFECTS OF WEEDS ON ARMYWORM IN MAIZE M.G. HILL and D.J. ALLAN Entomology Division , DSIR , Private Bag , Auckland SUMMARY Plots of maize ( Zea mays ) plants were grown under weedy and weedfree conditions to see if weeds ...
Page 262
262 TABLE 1 : Percentage parasitism ( + 95 % confidence intervals ) of armyworm larvae from weedy and weed - free maize plots . n = sample size . Weedy Plots 95 % CI Weed - Free Plots Mean 95 % CI Mean n n a ) Preserved and dissected ...
262 TABLE 1 : Percentage parasitism ( + 95 % confidence intervals ) of armyworm larvae from weedy and weed - free maize plots . n = sample size . Weedy Plots 95 % CI Weed - Free Plots Mean 95 % CI Mean n n a ) Preserved and dissected ...
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Contents
Author Index | 9 |
PASTURE PESTS | 15 |
Field testing of seed protectants against black field cricket attack | 22 |
Copyright | |
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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