Proceedings of the New Zealand Weed and Pest Control Conference1988 - Pesticides |
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Page 37
Two control measures were shown to be effective against BYDV in the present
work . Firstly , insecticide treatment of cereals at the tillering stage ,
recommended by Smith ( 1963 ) , controlled the spread of BYDV by two vectors ;
the rose grain ...
Two control measures were shown to be effective against BYDV in the present
work . Firstly , insecticide treatment of cereals at the tillering stage ,
recommended by Smith ( 1963 ) , controlled the spread of BYDV by two vectors ;
the rose grain ...
Page 47
Quizalofop has shown excellent promise for control of summer grass and couch (
in addition to some other grasses ) and deserves further testing over a wide
range of conditions . ACKNOWLEDGEMENTS Thanks are due to J . Mortimer for
...
Quizalofop has shown excellent promise for control of summer grass and couch (
in addition to some other grasses ) and deserves further testing over a wide
range of conditions . ACKNOWLEDGEMENTS Thanks are due to J . Mortimer for
...
Page 200
RESULTS Effect of hexythiazox on larvae and nymphs The effect of direct sprays
of various hexythiazox concentrations on the mortality of TSM larvae and nymphs
is shown in Table 1 . All concentrations caused 100 % or near 100 % mortality ...
RESULTS Effect of hexythiazox on larvae and nymphs The effect of direct sprays
of various hexythiazox concentrations on the mortality of TSM larvae and nymphs
is shown in Table 1 . All concentrations caused 100 % or near 100 % mortality ...
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Contents
Author Index | 9 |
Address by Sir David Beattie to 40th Annual Conference | 15 |
CEREALS | 21 |
Copyright | |
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activity annual application assessment Auckland barley bioassay block Canterbury chemical clover compared concentrations cost crop damage determined disease early effect eggs emergence established experiments field flowering fluazifop-butyl four fruit fungicides gave glyphosate grass growth Hamilton harvest herbicides higher increased infection insecticide kg/ha larvae leaf leaves less loam mean measured method mite months N.Z. Weed North occurred P.O. Box pasture period Pest Control Conf plants plots populations predicted present Private Proc production programme quizalofop range recommended recorded reduced replicates reported Research residual resistance samples scale season seed seedlings shoot showed shown significant significantly Silwet similar soil species spray spring stage stem strains summer surfactant Table temperature thrips tillers treated treatment trees trial untreated Weed and Pest weed control weeks weight yield Zealand