| 摘要 |
The invention relates to agriculture, in particular, to mixture postemergence means of protection of grain crops and maize planting against undesired weeds. The invention is directed for developing a novel highly effective preparation for suppressing weeds in grain crops planting based on a mixture of low-volatile esters of 2,4-dichlorophenoxyacetic acid (C7-C 9) and florasulam with a widened temperature range use. The achieved result provides an emulsion concentrate of a herbicidal composition for suppressing weeds in grain crop planting comprising a mixture of low-volatile esters of 2,4-dichlorophenoxyacetic acid (C7-C9), mainly heptyl, octyl and nonyl esters taken in a molar ratio to acid residue 0.043-0,051:1:0.,032-0.039, with florasulam and alkylencarbonate taken in molar ratio to octyl ester of 2,4-dichlorophenoxyacetic acid 0.0025-0.0111:0.537-0.577:1, a cosolvent and an emulsifier. It is advisable to use nonionic surfactants as a mixture of alkoxylated alcohols with calcium alkylbenzolsulfonate in the presence of 2-ethylhexanol. The emulsion concentrate of a herbicidal composition provides high biological and economical effectiveness in combating undesired weeds in grain planting. |
