TY  - BOOK
AU  - Zhoutong Yu
AU  - Qianchum Xiao
AU  - Shuming Wu
AU  - Wuren Huang
AU  - Yongqiang Chen
TI  - Models for forecasting disease development and severity of rubber powdery mildew(Oidium heveae steinm)
PB  - Proceedings of IRRDB Symposium 1999, Hainan, Peoples Republic of China. pp.281-287.
KW  - Forecasting disease progress
KW  - Oidium heveae steinm
KW  - Rubber powdery mildew
N2  - The disease progress rate is affected by inoculum level at rubber wintering, refoliation speed, temperature, relative humidity during 5;budbrust to 20;refoliation, forecasting models were developed based on these factors, the results of validation in different rubber growing areas on Human Island showed that the forecasting values of the models were rather identical with actual values, and the correlation coefficients were 0.8872-0.9732. The models were used to guide chemical control, the control efficiency was 9.1;higher than normal dusting schedule, 17.6 cost was reduced, and increased 11.4;benefit
ER  -