Proceedings of the New Zealand Weed and Pest Control Conference1990 - Pesticides |
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Page 18
... crop . These cobs were examined for the presence of TFW larvae to estimate the percentage infested . Traps were then moved to later planted crops which had started silking . A total of 20 crops were examined . RESULTS In tomato crops ...
... crop . These cobs were examined for the presence of TFW larvae to estimate the percentage infested . Traps were then moved to later planted crops which had started silking . A total of 20 crops were examined . RESULTS In tomato crops ...
Page 159
... crops with healthy yield potentials of 3.5 to 7.6 tDM / ha . The yield loss response in each crop was dependent on ... crops . When measured as green leaf area the relationship was similar in actual yield for crops with different yield ...
... crops with healthy yield potentials of 3.5 to 7.6 tDM / ha . The yield loss response in each crop was dependent on ... crops . When measured as green leaf area the relationship was similar in actual yield for crops with different yield ...
Page 161
... crops ( Fig . 2 ) . Disease reduced the amount of GLAI produced during the season in all crops . The loss in yield ranged from 0.025 ( crop 3 ) to 0.033 ( crop 2 ) tDM / ha per unit of AUGLAIC , but the slope values were not ...
... crops ( Fig . 2 ) . Disease reduced the amount of GLAI produced during the season in all crops . The loss in yield ranged from 0.025 ( crop 3 ) to 0.033 ( crop 2 ) tDM / ha per unit of AUGLAIC , but the slope values were not ...
Contents
Author Index | 10 |
Research Scholarship | 16 |
Developing an action threshold for lepidopterous pests of cabbage | 26 |
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43rd N.Z. Weed adult aphid apple application asparagus assessed Auckland bioassay block Canterbury catches chemical chlorpyrifos chlorsulfuron Christchurch crops cultivars damage density diazinon dicarboximide disease DSIR DSIR Plant Protection effect endophyte field fungicide genes giant buttercup glyphosate gorse gorse seedlings grass growers growth harvest herbicides infestation insecticide insects instar kg/ha kiwifruit larvae LBAM leaf leafroller levels Lincoln litres MAF Technology MCPA MCPB methidathion method metsulfuron mortality moth nematodes nodding thistle North Island orchard P.O. Box Palmerston North parasitoid pasture permethrin Pest Control Conf pesticides pheromone pheromone traps plots Popay populations pots predation Proc prochloraz programme pyri rates reduced replicates Research residual Rhinocyllus Ruakura ryegrass samples season seed significantly Silwet L77 simazine soil solarisation species spider mite spray Table tall fescue temperatures tested thrips toxicity treatment trees trials triclopyr untreated wasp Weed and Pest weed control white clover yield loss Zealand