Proceedings of the New Zealand Weed and Pest Control Conference, Issue 401987 - Pesticides |
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Page 31
... adults fed on potted lucerne plants were provided as hosts . Adult sitona weevils ( > 80 % parasitised ) or reared adult M. aethiopoides were released on a total of 17 lucerne crops in Marlborough , Canterbury and Central Otago ...
... adults fed on potted lucerne plants were provided as hosts . Adult sitona weevils ( > 80 % parasitised ) or reared adult M. aethiopoides were released on a total of 17 lucerne crops in Marlborough , Canterbury and Central Otago ...
Page 157
... adult densities on young leaves . Whitefly on unsprayed tamarillos caused considerable leaf and fruit drop and severe contamination with sooty mould . Fruit was smaller and fruit yield reduced by 43 % . The 20 adults per leaf threshold ...
... adult densities on young leaves . Whitefly on unsprayed tamarillos caused considerable leaf and fruit drop and severe contamination with sooty mould . Fruit was smaller and fruit yield reduced by 43 % . The 20 adults per leaf threshold ...
Page 158
... adult threshold counts ( Table 2 ) . Culmulative threshold ( adult leaf ) 200 100- Unsprayed 100 50 20 0- 21 30 11 26 10 26 5 17 1 Jan Feb Mar Apr May Fig . 1 : Cumulative adult whitefly counts at each visit for unsprayed , 100 , 50 and 20 ...
... adult threshold counts ( Table 2 ) . Culmulative threshold ( adult leaf ) 200 100- Unsprayed 100 50 20 0- 21 30 11 26 10 26 5 17 1 Jan Feb Mar Apr May Fig . 1 : Cumulative adult whitefly counts at each visit for unsprayed , 100 , 50 and 20 ...
Contents
Author Index | 9 |
Rules of the Society | 15 |
Control of barley yellow dwarf virus BYDV disease of barley in mid | 18 |
22 other sections not shown
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40th N.Z. Weed adult aethiopoides aphid apple application asparagus assessed atrazine Auckland barley BYDV Canterbury captafol chemical Chilean needle grass clopyralid crop cultivars cyhexatin damage density diameter diazinon dichlorvos discoideus disease dormant buds DSIR effect eggs flower fumigation fungicides g ai/100 litres gastropod glyphosate Goldson grass grub growth regulators haloxyfop harvest Hawkes Bay herbicides increased infection inflorescence insecticides kg ai/ha kiwifruit larvae leaf levels Lincoln College linuron lucerne mancozeb mefluidide metalaxyl metiram metribuzin mite miticides mortality nectarines nematodes numbers organotin P.O. Box paclobutrazol parasitoid pasture perennial ryegrass permethrin persimilis Pest Control Conf pesticide pesticide resistance pirimiphos-methyl plant growth plots population predator Proc prochloraz propiconazole reduced replicates Research resistance management samples season seed seedlings significantly simazine slug soil species spray stages surface Table temperature terbuthylazine thrips tillers toxicity translocation treatment trees triadimenol trial turf uptake Weed and Pest weed control whitefly yield Zealand