Forecasting system for the occurrence of the tea spiny whitefly (Aleurocanthus camelliae Kanmiya and Kasai) using the effective accumulated temperature in Miyazaki
2017
Teramoto, S. (The Miyazaki Agricultural Research Institute, Miyazaki (Japan)) | Wakasugi, J.
We build prediction system of Aleurocanthus camelliae Kanmiya and Kasai generation (every period of eggs, larvals and adults) using the thermal constant. We inspected suitability of it around the prefecture, and we predicted time the biggest density of wintering generation. This system can simulate by Excel (spread sheet software). At first we imput the threshold temperature and the thermal constant. Then, we choose the spot distinction that assumed a database, the temperature data according to the year. At last we determine the value of the thermal constant using trigonometry by the above it can predict appearances of this insects. It is original model by miyazaki prefecture. This insects breeding at third or forth times of the year in miyazaki prefecture. This system's result fitted observed value. And we know that wintering generation density peaks reach 190 days degree the thermal constant (on larvals) starting from january 1.
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