Proceedings of the New Zealand Weed and Pest Control Conference1988 - Pesticides |
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Page 34
... barley yellow dwarf virus ( BYDV ) symptoms was less in wheat and rye than in barley and oats . Serological assay showed that symptomless BYDV infection was also present , particularly in wheat and rye . In all cereals , except wheat ...
... barley yellow dwarf virus ( BYDV ) symptoms was less in wheat and rye than in barley and oats . Serological assay showed that symptomless BYDV infection was also present , particularly in wheat and rye . In all cereals , except wheat ...
Page 36
... barley was < 3 % at the flagleaf stage ( GS 41 ) . The grain yield response to spray was positive and highly significant ( P < 0.001 ) . The interaction between cultivar and insecticide effects was also significant ( P < 0.05 ) ...
... barley was < 3 % at the flagleaf stage ( GS 41 ) . The grain yield response to spray was positive and highly significant ( P < 0.001 ) . The interaction between cultivar and insecticide effects was also significant ( P < 0.05 ) ...
Page 38
... barley at Lincoln in 1986 and 1987 ( Farrell and Stufkens , unpublished ) . The recent increase of BYDV in spring barley , compared with the low incidence in earlier years ( Close 1969 ) , may be associated with the presence of this ...
... barley at Lincoln in 1986 and 1987 ( Farrell and Stufkens , unpublished ) . The recent increase of BYDV in spring barley , compared with the low incidence in earlier years ( Close 1969 ) , may be associated with the presence of this ...
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