Abstract:

The paper aims to effectively control the hazards of Triticum aestivum and 1-year-old broad-leaved weeds, and screen herbicides with good control efficacy. We conducted field trials on the control of weeds in winter wheat field by mixing 3% Sigma oil suspension concentrate and 3% Fluperazine and Butachl suspension concentrate. The results showed that: 30 d after spraying on wheat leaves at returning green stage, the control effect on Veronica didyma Tenore, Descurainia sophia (Linn.) Webb ex Prantl, Galium aparine Linn. var. tenerum Gren.et Godr. Rebb. and Capsella bursa-pastoris (L.) Medic. reached 50.0%-72.5%; 45 d after the treatment, the control effect on the fresh weight of Veronica didyma Tenore, Descurainia sophia (Linn.) Webb ex Prantl, Galium aparine Linn. var. tenerum Gren.et Godr. Rebb. and Capsella bursa-pastoris (L.) Medic. reached 67.2%-95.8%, and the control effect on the fresh quality of Aegilops tauschii Coss. was up to 81.3%. The results indicate that the mixture of 3% Sigma oil suspension concentrate and 3% Fluperazine and Butachl suspension concentrate could effectively control Aegilops tauschii Coss. and 1-year-old broad-leaved weeds, and could achieve the best weed control effect after wheat returning green, at the same time, the field investigation shows the mixture is safe for wheat.

Key words: Sigma, Florasulam and Triazolone, winter wheat, Aegilops tauschii Coss., broad-leaved weeds, efficacy evaluation