ISHS Acta Horticulturae 444: III International Symposium on Kiwifruit
DEVELOPMENT OF A MODEL TO PREDICT THE PHENOLOGY OF OLEANDER SCALE (ASPIDIOTUS NERII) INFESTING KIWIFRUIT |
| Authors: | A.R. Tomkins, P.A. Allison, C. Thomson, D.J. Wilson |
| DOI: | 10.17660/ActaHortic.1997.444.121 |
| Abstract:
Three species of armored scale insects including oleander scale (Aspidiotus nerii), are the key pests of kiwifruit grown in New Zealand. Temperature-driven phenology models are being developed to improve the timing of insecticide applications against these pests. The rate of development and progeny production of oleander scale was studied at 5 constant temperatures. These data were used in a model which simulates diurnal temperature patterns and then calculates accumulated daily day degrees to drive a distributed development model of oleander scale phenology. The model was able to achieve a good fit compared with actual phenology data obtained from an unsprayed kiwifruit orchard over a single season. Although initial results are promising, further validation of the model is required for other kiwifruit growing districts before it can be used to time control measures. | |
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