Efficacy and safety evaluation of 30% topramezone·nicosulfuron·terbuthylazine dispersible oil suspension agent in controlling weeds in corn field

doi:10.14088/j.cnki.issn0439-8114.2022.08.010

Abstract

Abstract: In order to clarify the field efficacy and safety of 30% topramezone·nicosulfuron·terbuthylazine dispersible oil suspension concentrate, the field efficacy test was carried out by using the stem and leaf spray method. The growth of corn and the control effect of weeds were investigated at 15 and 30 days after treatment. The results showed that 30% topramezone·nicosulfuron·terbuthylazine dispersible oil suspension agent can effectively control Echinochloa crusgalli （L.） Beauv., Digitaria sanguinalis （L.） Scop, Abutilon theophrasti Medicus and Acalypha australis L.. The total control effect against weeds at 15 days after the treatment was 90.81%~98.16%, the total control effect against weeds at 30 days after the treatment was 88.88%~97.78%, and the fresh weight control effect against weeds was 90.42%~98.82%. During the growth period, the treatment of 30% topramezone·nicosulfuron·terbuthylazine dispersible oil suspension concentrate in various concentrations was safe for corn.

Key words: corn, topramezone, nicosulfuron, terbuthylazine, efficacy, safety

CLC Number:

S482.4

GAN Tian, HUANG Shi, MA Dong-dong, DU Xiao-ying, LI Jun-kai. Efficacy and safety evaluation of 30% topramezone·nicosulfuron·terbuthylazine dispersible oil suspension agent in controlling weeds in corn field[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(8): 62-65.

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