Proceedings of the New Zealand Weed and Pest Control Conference1976 - Pesticides |
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Page 52
... numbers of live and dead white- fringed weevil adults were counted weekly and the numbers of subse- quent larvae assessed by digging up each plot in late May and extracting the larvae by flotation and wet sieving . The number of adult ...
... numbers of live and dead white- fringed weevil adults were counted weekly and the numbers of subse- quent larvae assessed by digging up each plot in late May and extracting the larvae by flotation and wet sieving . The number of adult ...
Page 153
... Numbers of live plants were counted at each growth stage measurement and on the final day , when plants were cut at soil level , oven dried and weighed . Aphid Numbers RESULTS AND DISCUSSION Initially aphid numbers increased according ...
... Numbers of live plants were counted at each growth stage measurement and on the final day , when plants were cut at soil level , oven dried and weighed . Aphid Numbers RESULTS AND DISCUSSION Initially aphid numbers increased according ...
Page 54
... numbers compared with gorse . Gorse seed numbers in the soil were determined by carefully removing 2.5 cm layers of soil down to 15 cm over 0.1 m2 areas situated in both cleared and uncleared parts of the site . Seed was extracted by ...
... numbers compared with gorse . Gorse seed numbers in the soil were determined by carefully removing 2.5 cm layers of soil down to 15 cm over 0.1 m2 areas situated in both cleared and uncleared parts of the site . Seed was extracted by ...
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