|Table of Contents|

Study on A Flumetsulam/S-metolachlor Mixture Controlling Weeds in Soybean Fields(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2018年03期
Page:
424-428
Research Field:
Publishing date:

Info

Title:
Study on A Flumetsulam/S-metolachlor Mixture Controlling Weeds in Soybean Fields
Author(s):
ZHANG Fu-rong1;  ZHAO Cun-hu2;  HE Xiao-yong2;  CHENG Yu-chen2;  JIA Yong-hong1
(1. College of Vocational and Technological, Inner Mongolia Agricultural University, Baotou 014109,China； 2. Plant Protection Institute, Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Huhhot 010031, China)
Keywords:
Flumetsulam;  S-metolachlor;  Soybean;  Control effect;  Co-toxicity coefficient
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2018.03.0424
Abstract:
In order to determine proper Flumetsulam/S-metolachlor ratios and suitable dosages on weed control in soybean fields, it was treated with five Flumetsulam/S-metolachlor ratios (1∶2.5, 1∶5, 1∶10, 1∶20,1∶40)for Echinochloa crusgalli?using pot growing method, and their bioactivities were detected, and the effect of weed control and the seedling number, plant height and yield of soybean treated with four mixed dosages (600, 900, 1 200 and 1 800 g·ha-1) was studied by field experiments. The results showed that: The mixed use of Flumetsulam and S-metolachlor had a positive synergistic effect on weed control and a good safety for the growth of soybeans, the proper mixed ratio was 1∶20, and the suitable dosages range from 900 to 1 200 g·ha-1, the co-toxicity coefficients of five mixed ratios with positive synergistic effect fluctuated between 240.72 and 380.59, and the maximum co-toxicity coefficient was 380.59 at 1∶20,when Flumetsula/S-metolachlor mixtures of four mixed dosages with mixed ratio at 1∶20 were sprayed after 45 d, the positive effects of weed control were a total plant control effect of 78.9%～98.2% and a total fresh weight control effect of 85.3%～99.6%. There was not remarkable difference in seedling emergences, plant height and yields of soybean between the four mixed treatments and the manual weeding.

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Last Update: 2018-06-08