Technology of controlling major pests on litchi trees.
The main insect pests and diseases on litchi trees (Litchi chinensis) were controlled using an integrated control method including biological control and agricultural chemicals, with high effectiveness, low toxin use, and low residual toxicity being the main features. The pentatomid Tessaratoma papillosa was controlled by releasing eupelmids (Anastatus) onto 90 000 trees in two years. The pentatomid egg parasitism rate reached 89.32-91.43%. Other insect pests, stem end borers, spanworms, and Lymantria dispar were all controlled by using insecticides with low toxin content and low residual toxicity, resulting in up to 92.53-99.01% control. Litchi downy mildew was controlled by using agricultural antibiotic 904 and Pulike, which provided 93.59-94.28% control.