How to control rice stem borer

How to control Chilo suppressalis? The rice stem borer (Chilo suppressalis) is one of the main pests on rice in our county, which is mainly caused by the larval decay into the stem, and the semi-withered panicle, dead booting and white panicle are formed at booting stage and heading stage, which seriously affects the yield of rice. The prevention and control of the first generation of Chilo suppressalis in our county is very uneven this year. Some farmers have missed the appropriate period for control because of busy farming, or some have not even carried out control, resulting in serious damage to borer in some fields and more residual larvae per mu. Increased the control task of the second generation of Chilo suppressalis. According to the survey from the end of June to July 8, the average damage rate of the first generation of Chilo suppressalis was 5.1%, the damage rate of serious field borer was 21.7%, and the number of residual live insects per mu was 6740. On July 11, the pupation rate was 28.7% and the Eclosion rate was 1.6%. According to the comprehensive analysis of insect situation, seedling situation, combined with meteorological conditions and data over the years, the peak of Eclosion is about July 15, and the peak period of egg hatching is from July 20 to 25. It is hoped that farmers in all villages and towns should pay attention to doing a good job in field investigation and carry out prevention and control work in a timely manner. 1. Control index: there are 120 eggs per mu or 60 damaged plants per mu. The control target fields are paddy fields with excessive nitrogen fertilizer, thick green leaves and luxuriant growth. 2. The appropriate period for prevention and control: July 20 to 25. 3. Control methods: spray evenly with 18% Shachongshuang 200g or 40% chlorpyrifos 50ml or 18% triazophos 100g with water 40kg per mu. Click to get massive rice planting technology click to get massive grain planting technology