Proceedings of the New Zealand Weed and Pest Control Conference1988 - Pesticides |
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Page 104
... production from rolling were related to the density of immature third instar larvae . The proportion of these larvae killed by rolling in the three trials was similar regardless of initial grub density . The linear regression between ...
... production from rolling were related to the density of immature third instar larvae . The proportion of these larvae killed by rolling in the three trials was similar regardless of initial grub density . The linear regression between ...
Page 114
... production . Manipulation of population size was abandoned . The two plots in each block that had had the higher larval densities in preceding seasons remained unsprayed while the weevil was effectively eliminated from the two lower ...
... production . Manipulation of population size was abandoned . The two plots in each block that had had the higher larval densities in preceding seasons remained unsprayed while the weevil was effectively eliminated from the two lower ...
Page 202
... production bed did not noticeably increase until late October , a delay of up to 6 weeks . The same study also indicated that any P. persimilis on the harvested runners did not survive the transition to production beds , so that , for ...
... production bed did not noticeably increase until late October , a delay of up to 6 weeks . The same study also indicated that any P. persimilis on the harvested runners did not survive the transition to production beds , so that , for ...
Contents
Author Index | 9 |
Address by Sir David Beattie to 40th Annual Conference | 15 |
CEREALS | 21 |
Copyright | |
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41st N.Z. Weed activity alligator weed aphid application asparagus assessed Auckland barley bioassay BYDV Canterbury cereals chemical clethodim crop cultivars cyproconazole damage diclofop-methyl disease DSIR effect eggs field flowering fluazifop-butyl fluvalinate foliage fruit fungicides g/ha glyphosate gorse grass grub grass weeds growers Hamilton clay loam herbicides Horotiu sandy loam infection insecticide kg/ha kiwifruit larvae leaf litres/ha loam soil MCPA mite miticides mulch myclobutanil nodding thistle NZ Weed orchards P.O. Box paclobutrazol Palmerston North pasture pendimethalin Pest Control Conf picloram pirimicarb plants plots Popay populations Proc programme propargite propiconazole Pukekohe quizalofop regrowth replicates Research residues resistance rosettes Ruakura ryegrass samples seed seedlings sethoxydim shoot significantly Silwet L-77 simazine spray surfactant susceptible Table temperature tested thrips tillers tip rot translocation treated treatment trees trial triasulfuron untreated uptake Weed and Pest weed control weeks yield Zealand