Proceedings of the New Zealand Weed and Pest Control Conference, Volume 391986 - Pesticides |
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Page 184
... thistle 7 11 10 14 0 nodding thistle 2 0 0 14 Californian thistle 59 67 ragwort 37 20 rushes 20 20 333 60 36 37 24 3225 33 27 36 26 0 1 400000 8 20 20 874422 66 b ) Density ( plants / ha ) Scotch thistle 883 401 1226 6444 352 1009 1719 ...
... thistle 7 11 10 14 0 nodding thistle 2 0 0 14 Californian thistle 59 67 ragwort 37 20 rushes 20 20 333 60 36 37 24 3225 33 27 36 26 0 1 400000 8 20 20 874422 66 b ) Density ( plants / ha ) Scotch thistle 883 401 1226 6444 352 1009 1719 ...
Page 189
... thistle seedlings were counted and removed at approximately monthly intervals , and plots were re - treated with paraquat at the same time . Also in 1982 , the effect of clover - damaging sprays on emergence of nodding thistle seedlings ...
... thistle seedlings were counted and removed at approximately monthly intervals , and plots were re - treated with paraquat at the same time . Also in 1982 , the effect of clover - damaging sprays on emergence of nodding thistle seedlings ...
Page 207
... thistle from 66 % in the first year to 17 % the next . In small plot trials speed of thistle knockdown increased with increased rate of clopyralid but final kill was largely independent of rate . Bolting thistles were more susceptible ...
... thistle from 66 % in the first year to 17 % the next . In small plot trials speed of thistle knockdown increased with increased rate of clopyralid but final kill was largely independent of rate . Bolting thistles were more susceptible ...
Contents
Author Index | 9 |
PASTURE PESTS | 15 |
Field testing of seed protectants against black field cricket attack | 22 |
Copyright | |
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39th N.Z. Weed adult alachlor aphid application asparagus assessed atrazine beetle benomyl biological control buprofezin BYDV Californian thistle captafol chemicals chlorpyrifos clopyralid cover crawlers crop damage density diazinon discoideus disease DSIR effect eggs fensulfothion field foliage formulation fruit fungicides glyphosate gorse grass grub greedy scale growers growth haloxyfop EE harvest herbicides hexazinone increased infested insect insecticide insensitive instar kg ai/ha kiwifruit larvae leaf litres litres/ha lucerne metalaxyl metsulfuron mg ai/litre miticides mortality nematodes numbers orchard P.O. Box Palmerston North paraquat parasite pasture pathogens persimilis Pest Control Conf pesticides plants plots population porina Proc prochloraz ragwort rates reduced regrowth replicates Research residues root Ruakura ryegrass samples season seed treatments seedlings significant significantly Silwet Sitona soil spears species spray sprayer surfactant Table tamarillo tested trees trials trifluralin untreated control vinclozolin vines Weed and Pest weed control weeks whitefly yield Zealand