Titlebook: Resistance’ 91: Achievements and Developments in Combating Pesticide Resistance; Ian Denholm,Alan L. Devonshire,Derek W. Hollomon Book 199

Resistance

Bruce E. Tabashnik,Jay A. Rosenheim,Michael A. Caprio

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Monitoring Fungicide Resistance: Purposes, Procedures and Progressl performance as well as isolate responses is also emphasised. DNA probes or other biochemical detectors of fungicide resistance are not yet available, but would be valuable especially for epidemiological studies of resistance. The value of some reported monitoring exercises is appraised, and the re

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Fungicide Resistance Strategies in Winter Wheat in The Netherlands sensitivity to fenpropimorph. Resistance levels up to 13 were noted. The resistance level of these isolates to triadimenol varied from 18-132. In 1989 and 1990, field performance of the fungicides was difficult to judge because of a low mildew incidence. An evaluation of the resistance strategy use

Mnemonics

Evolution and Management of Resistance in the Colorado Potato Beetle, ,from ., that do not show cross-resistance and preserve predators. Other refinements, including trap crops, propane flame technologies, and genetically resistant host plants are under investigation. With adequate grower education, resistance in the Colorado potato beetle seems manageable.

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Management of Insecticide Resistance in , in Australia - Ecological and Chemical Countermeasuresit from natural enemies; the pursuit of early crops (through better irrigation and nitrogen management, judicious use of plant growth regulators and early sowing) to avoid late season . populations; avoidance of unfavourable cropping or rotation programmes; the destruction of overwintering pupae and

Endoscope

Resistance to Phenylamide Fungicides: Strategies and their Evaluationalaxyl alone. Where phenylamide resistance has been managed or avoided, factors other than the purely fungicide-based elements of the FRAC strategy are responsible. Successful strategies must take account of pathogen epidemiology as well as fungicide usage.

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