Remedial Effects of Different Relief Measures on Clodinafop-propargyl Phytotoxicity in Wheat

SU Wangcang; YAN Zhaoling; GE Yuhong; WU Renhai; WANG Hengliang; SUN Runhong; LU Chuantao; QU Junfeng; WANG Yuzhen

doi:10.15933/j.cnki.1004-3268.2015.09.015

Abstract：In order to explore the mitigation effects of various relief measures on the phytotoxicity of clodi-nafop-propargyl in wheat,nine antidotes were sprayed respectively in two periods( November 27,March 2 in the next year) after spraying clodinafop-propargyl in wheat field on November 17,and some indicators such as plant height,production of wheat and so on separately at a certain time were then surveyed.The remedial effects of the test was validated in the following year( spraying clodinafop-propargyl on March 3, and spraying antidotes on March 10) .The results showed that after spraying 240 g/ha of clodinafop-pro-pargyl(active ingredient),the plant height,seeds per ear and 1 000-seed weight of wheat were reduced by 15.99%,25.52%and 12.55%compared to those of the blank control respectively,and the overall yield of wheat was lessened by 34.34%.However,the seeds per ear,1 000-seed weight and the wheat produc-tion of spraying BR treatment in the early days of the phytotoxicity were higher than those of the control treated with clodinafop-propargyl by 27.28%,13.17% and 47.47%(the screening test for the first time) .The yield was reduced by 22.33%after spraying 180 g/ha of clodinafop-propargyl ( active ingre-dient) ,but the leaf SPAD value and the wheat production of spraying BR treatment in the early days of the phytotoxicity were higher than those of the control treated with clodinafop-propargyl by 5 .87% and 25 .13%( the validation test ) .The data showed that spraying BR in the early days of the phytotoxicity could achieve relatively ideal remedial effect on the inhibition of clodinafop-propargyl phytotoxicity to the wheat production.