Proceedings of the New Zealand Weed and Pest Control Conference1988 - Pesticides |
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Page 38
... compared with a low incidence of the disease in 1983 ( Stufkens and Farrell 1986 ) . Increasing BYDV incidence during the period 1983-1987 may be linked with two factors . Firstly , autumn flights of CA and RGA , and their colonization ...
... compared with a low incidence of the disease in 1983 ( Stufkens and Farrell 1986 ) . Increasing BYDV incidence during the period 1983-1987 may be linked with two factors . Firstly , autumn flights of CA and RGA , and their colonization ...
Page 86
... compared the regressions and calculated the relative potency of an insecticide against different aphid populations . The distribution of resistance between sites was examined with a single concentration of insecticide chosen to ...
... compared the regressions and calculated the relative potency of an insecticide against different aphid populations . The distribution of resistance between sites was examined with a single concentration of insecticide chosen to ...
Page 136
... compared with 20 % in the untreated population . A similar pattern emerged in September . The reduction of feeding was reflected in 37 % more dry matter being produced in the treated plots over the May - September period compared with ...
... compared with 20 % in the untreated population . A similar pattern emerged in September . The reduction of feeding was reflected in 37 % more dry matter being produced in the treated plots over the May - September period compared with ...
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