Proceedings of the New Zealand Weed and Pest Control Conference1976 - Pesticides |
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Page 15
... stage for application is during the 2-4 leaf stage of the grasses , but some grasses can be controlled until tillering . At later stages , a higher rate of application must be used . The stage of development of the crop is of no ...
... stage for application is during the 2-4 leaf stage of the grasses , but some grasses can be controlled until tillering . At later stages , a higher rate of application must be used . The stage of development of the crop is of no ...
Page 126
... stage with ethofumesate from 2.6-4.4 kg / ha appeared variably damaging ( Table 1 ) , whilst doses up to 3.0 kg / ha appeared selective at all other stages of the crop ( Table 1 , 2 and 3 ) . Three further visually assessed screening ...
... stage with ethofumesate from 2.6-4.4 kg / ha appeared variably damaging ( Table 1 ) , whilst doses up to 3.0 kg / ha appeared selective at all other stages of the crop ( Table 1 , 2 and 3 ) . Three further visually assessed screening ...
Page 153
... stage measurement and on the final day , when plants were cut at soil level , oven dried and weighed . Aphid Numbers ... stage , aphid numbers reached a maximum of 8 aphids / plant , but on seedlings infested with 1 aphid / 2 plants at ...
... stage measurement and on the final day , when plants were cut at soil level , oven dried and weighed . Aphid Numbers ... stage , aphid numbers reached a maximum of 8 aphids / plant , but on seedlings infested with 1 aphid / 2 plants at ...
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