Open AccessPhytotoxic Effect of Herbicides with and without Surfactant on Weed Growth and Yield of Wheat
Author(s) -
Asif Tanveer,
Muhammad Ashar Ayub,
Asghar Ali,
Rashid Ahmad
Publication year - 1999
Publication title -
journal of agricultural and marine sciences
Language(s) - English
Resource type - Journals
eISSN - 2410-1079
pISSN - 2410-1060
DOI - 10.24200/jams.vol4iss2pp35-39
Subject(s) - mcpa , urea , pulmonary surfactant , weed control , weed , agronomy , yield (engineering) , acetic acid , grain yield , chemistry , zoology , biology , materials science , organic chemistry , biochemistry , metallurgy
Use of surfactants is an effective mean of improving herbicide efficiency. The herbicides methabenzthiazuron [l ,3-Dimethyl-3-(2-benzothiazolyl)urea], chlortoluron[N-(3, Chloro-4-methyl phenyl)-N-N-dimethyl urea] + MCPA(2-Methyl-4-chlorophenoxy acetic acid] and lsoproturon [3-(4-isopropylphenyl)-1, 1-dimethyl urea] were evaluated for weed control at recommended rates of 1.26, 1.50 and 0.97 a.i. kg ha-1, respectively, in comparison with a 12.5 and 25% less rate after the addition of 0.2 % surfactant. Application of herbicides with surfactant even at lower rates was as effective as recommended rates in controlling weeds and increasing grain yield. Grain yield ranged from 20.8 to 45.3 % and 26.3 to 38.1 % more than the weedy check in 1992-93 and 1993-94, respectively, for various herbicide concentrations. Thus for economical weed control, a lower rate of herbicide with the addition of surfactant should be recommended.