Rerbicide Screening and Effects on Millet Yield in Spring-seeding and Early-maturing Region

• 作者: Feng Jing Guo Ruifeng Ren Yuemei Yang Zhong Zhang Shou
• 来源期刊: Plant Diseases and Pests(植物病虫害研究：英文版)
• 学科: 农学
• 年，卷（期）: pdapzwbchyj_2016,（4）
• 页码范围: 27-33
• 页数: 7页
• 分类号: S1

摘要

[Objective] Types and dosages of herbicides suitable for spring-seeding and early-maturing region were confirmed,to provide technical support for popularization of simple and efficient cultivation techniques of millet in the region. [Method] Four herbicides purchased from local agricultural market and two spraying methods were chosen to study plant control effect,fresh weight control effect,yield,emergence rate and plant height. [Result] The control effect of10% monosulfuron against dicotyledonous weeds was more than 92%,and effects were consistent among five concentrations. Control effects against monocotylous and dicotyledonous weeds at 25 and 40 d post administration successively were atrazine sprayed after sowing and before seedling ≥ 10% monosulfuron ≥ MCPANa ≥ atrazine sprayed at 3- 5 leaf stage ≥ 2,4-D butyl ester. Spraying 3 000 and 4 500 g / hm~2 atrazine after sowing and before seedling received the best effect. Spraying 2 250 and 3 000 g / hm~2 10% monosulfuron and spraying 750 and 1 500 g / hm~2 atrazine after sowing and before seedling increased the yield significantly. Treatments had little influence on seedling emergence included spraying 750 and 1 500 g / hm~2 atrazine after sowing and before seedling,spraying1 500 and 2 250 g / hm~2 10% monosulfuron,and spraying 1 500 g / hm~2 2,4-D butyl ester; spraying 10% monosulfuron and atrazine after sowing and before seedling inhibited growth strongly in the early stage. [Conclusion] Suitable herbicides for the region were 10% monosulfuron with the dosage of 1 500 and2 250 g / hm~2 and atrazine sprayed after sowing and before seedling with the dosage of 1 500 g / hm~2.