Prevention and Control Effects of New Biological Formulations Sprayed by Different Methods on Proceras venosatus (Walker) and Tryporyza intacta Snellen in Middle and Late Stages

• 作者: Fang Chao Huang Yingkun Li Wenfeng Luo Zhiming Mao Yonglei Shan Hongli Wang Xiaoyan Yin Jiong Zhang Rongyue
• 来源期刊: Plant Diseases and Pests(植物病虫害研究:英文版)
• 学科: 农学
• 关键词: Biological formulation DIFFERENT spraying METHODS Proceras venosatus (Walker) and Tryporyza intacta Snellen in MIDDLE and LATE stage Control effect evaluation
• 年，卷（期）: pdapzwbchyj_2018,（3）
• 页码范围: 29-32
• 页数: 4页
• 分类号: S

摘要

To screen new biological formulations, accurate and efficient application technology, field test was conducted with 72% Bacillus thuringiensis (Bt)·monosultap WP, 8% lambda-cyhalothrin·emamectin benzoate SA and 3.6% lambda-cyhalothrin·Bt SA through manual spraying and unmanned aerial vehicle spraying. Test results and comprehensive evaluation analysis demonstrated that 72% Bt·monosultap WP and 8% lambda-cyhalothrin·emamectin benzoate SA by manual spraying and unmanned aerial vehicle spraying had good prevention and control effect on strains and internodes damaged by Tryporyza intacta Snellen in middle and late stage, which were ideal new biological formulations with high effi-ciency and low risk for prevention and control of T. intacta in middle and late stage, and could be popularized in sugarcane area. 72% Bt·monosul-tap WP at the dose of 3 000 g/hectare and 8% lambda-cyhalothrin·emamectin benzoate SA at the dose of 750 mL/hectare could be sprayed in mid September at the peak occurrence period of the forth and fifth generations of T. intacta and Proceras venosatus. Agents were diluted with 900 kg water per hectare, and manually sprayed with electric knapsack sprayer;or agents were diluted with 15 kg of Haoyang aerial control special addi-tives and water per hectare, and sprayed with unmanned aerial vehicle. The control effect against borer-damaged strain rate was above 81.3% and that against borer-damaged internode rate was above 88.6%.