Proceedings of the New Zealand Weed and Pest Control Conference1976 - Pesticides |
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Page 176
... spring , and at conven- tional times against predominantly early larval stages in late spring / early summer . When assessed in February , a reduction in black beetle numbers of 60-90 % was obtained for fensul- fothion when compared to ...
... spring , and at conven- tional times against predominantly early larval stages in late spring / early summer . When assessed in February , a reduction in black beetle numbers of 60-90 % was obtained for fensul- fothion when compared to ...
Page 180
... spring throughout the summer . The cutting of long pastures prior to and during spring emergence drastically reduced the number of adults that emerged , almost prevented emergence during the summer months and reduced number of larvae in ...
... spring throughout the summer . The cutting of long pastures prior to and during spring emergence drastically reduced the number of adults that emerged , almost prevented emergence during the summer months and reduced number of larvae in ...
Page 180
... spring . Reinfestation in mid to late spring , 14 days after spraying , was usually rapid but at Dannevirke aphid levels fell off abruptly in all plots , in early spring and did not rise again until December . Aphid damage in early ...
... spring . Reinfestation in mid to late spring , 14 days after spraying , was usually rapid but at Dannevirke aphid levels fell off abruptly in all plots , in early spring and did not rise again until December . Aphid damage in early ...
Contents
Chairmans summary | 1 |
Notillage establishment of lucerne G C Atkinson | 9 |
Insects affecting lucerne seed production | 19 |
Copyright | |
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Common terms and phrases
29th N.Z. Weed activity adults Agric Agricultural Research Centre alachlor aphid application areas assessed asulam atrazine Auckland autumn azinphos-methyl barley grass benomyl BGLA black beetle blue-green lucerne aphid brassicas Canterbury carbofuran chemical chlorpyrifos Christchurch crop cultivars cypermethrin damage diflubenzuron disease DSIR effect emergence ethofumesate fensulfothion field trials foliage fungicides germination gorse granules grass grub growth Hamilton harvest herbicides increased insect insecticides isazophos kg/ha larvae leaf legumes Lincoln linuron litres/ha lucerne lucerne yield maize method mite nematode North Island numbers oats P.O. Box Palmerston North paraquat pasture Pest Control Conf phorate picloram plants plots population post-emergence Proc pyri rates reduced replicates residual resistant Ruakura Ruakura Agricultural Research ryegrass samples season seed seedlings significant significantly soil sowing sown species spray sprayer spring stage summer Table tested treatments triclopyr untreated Weed and Pest weed control weeks weevil Wellington white clover white-fringed weevil Zealand