Proceedings of the New Zealand Weed and Pest Control Conference1976 - Pesticides |
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Page 35
... infestation within known infested fields . However , it was unsatisfactory in a general survey because of an inability to distinguish consistently lucerne from pasture or nematode infestation within lucerne fields from rocky ridges ...
... infestation within known infested fields . However , it was unsatisfactory in a general survey because of an inability to distinguish consistently lucerne from pasture or nematode infestation within lucerne fields from rocky ridges ...
Page 190
... INFESTATION IN AERIAL TRIALS Infestation Rating Treatment chlorpyrifos kg / ha DAT 0 1 2 3 4 5 0.125 4 95 5 11 100 19 100 26 25 47 26 untreated 0 8 15 24 4 10 13 26 5 10 10 2230 11 26 14 355 37 51 57 Neither insecticide prevented aphid ...
... INFESTATION IN AERIAL TRIALS Infestation Rating Treatment chlorpyrifos kg / ha DAT 0 1 2 3 4 5 0.125 4 95 5 11 100 19 100 26 25 47 26 untreated 0 8 15 24 4 10 13 26 5 10 10 2230 11 26 14 355 37 51 57 Neither insecticide prevented aphid ...
Page 153
... infested with 1 aphid / 2 plants at this stage numbers reached a maximum 15 / plant . Aphid numbers generally declined 25 days after the first infestation . The highest level reached before this decline was 28 aphids / plant , on ...
... infested with 1 aphid / 2 plants at this stage numbers reached a maximum 15 / plant . Aphid numbers generally declined 25 days after the first infestation . The highest level reached before this decline was 28 aphids / plant , on ...
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