Proceedings of the New Zealand Weed and Pest Control Conference1988 - Pesticides |
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Page 22
... species is presented as approximate GR50 values , i.e. the concentration required to produce a 50 % reduction in the growth of bioassay species compared with the untreated control ( Table 2 ) . These figures are based on the average of ...
... species is presented as approximate GR50 values , i.e. the concentration required to produce a 50 % reduction in the growth of bioassay species compared with the untreated control ( Table 2 ) . These figures are based on the average of ...
Page 23
... species . TABLE 2 : The concentration ( g ai / ha ) of triasulfuron required in the ' standards ' series to give a 50 % reduction in the growth of bioassay species compared to untreated controls ( GR ,. ) . Horotiu sandy loam Hamilton ...
... species . TABLE 2 : The concentration ( g ai / ha ) of triasulfuron required in the ' standards ' series to give a 50 % reduction in the growth of bioassay species compared to untreated controls ( GR ,. ) . Horotiu sandy loam Hamilton ...
Page 226
... species in their vernalisation requirements . Distribution of the species may be partly related to their flowering behaviour . INTRODUCTION Seeds of all five of the annual ' barley grass species found in New Zealand ( Hordeum glaucum ...
... species in their vernalisation requirements . Distribution of the species may be partly related to their flowering behaviour . INTRODUCTION Seeds of all five of the annual ' barley grass species found in New Zealand ( Hordeum glaucum ...
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