Proceedings of the New Zealand Weed and Pest Control Conference1976 - Pesticides |
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Page 177
... autumn , in the absence of further aphid infestations , reduced autumn , winter and spring growth by 72 % , 47 % and 27 % respectively . At another site insecticide control of aphids in mid autumn gave significant increases in lucerne ...
... autumn , in the absence of further aphid infestations , reduced autumn , winter and spring growth by 72 % , 47 % and 27 % respectively . At another site insecticide control of aphids in mid autumn gave significant increases in lucerne ...
Page 180
... autumn at Woodville affected not only autumn production but carried over into both winter and spring pro- duction ( Table 1 ) . Losses in lucerne production recorded at Woodville were about 72 % , 47 % and 27 % for autumn , winter and ...
... autumn at Woodville affected not only autumn production but carried over into both winter and spring pro- duction ( Table 1 ) . Losses in lucerne production recorded at Woodville were about 72 % , 47 % and 27 % for autumn , winter and ...
Page 181
... autumn require spraying if damage is to be avoided . In view of these studies it seems important to control aphids in autumn until flight stops in about mid May so that lucerne does not suffer autumn damage , the effects of which may ...
... autumn require spraying if damage is to be avoided . In view of these studies it seems important to control aphids in autumn until flight stops in about mid May so that lucerne does not suffer autumn damage , the effects of which may ...
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