Herbicide concentrated emulsion

 

Describes synergistic herbicide composition in the form of a concentrated emulsion in the following content, wt.%: 2-ethylhexyloxy ester of 2,4-dichlorophenoxyacetic acid 12-24, monoethanolamine salt of N-phosphonomethylglycine 24-36, ethoxylated alkyl phenol 10-15, water the rest. Technical result - a drug with a higher herbicide activity. table 2.

The invention relates to chemical means of plant protection and can be used to combat one and perennial weeds in crops spring crops.

Known herbicide composition based on esters of 2,4-D, representing emulgirujushchie concentrate with a content of active substance from 71 to 80 wt.% [EN 2163759]. The composition is used to fight broadleaf weeds in crops of cereals at the rate of 0.3 kg/ha.

Known herbicide composition of given, 25% aqueous solution tetramethylmethylenediamine salts of 2,4-D and glyphosate - prototype [EN 1665561]. The disadvantage of these compounds is their relatively low herbicide activity.

The task of the invention is the development of a drug with a higher level of the emulsion, containing both hydrophilic monoethanolamine salt of glyphosate and lipophilic 2-stylecrave ester 2,4-D, resulting in the observed synergism of their action in the following content, wt.%: 2-Ethylhexyloxy ether 2,4-dichlorophenoxyacetic acid - 12 - 24 Monoethanolamine salt of N-phosphonomethylglycine - 24 - 36 Emulsifier - 10 - 15 Water - the Rest as emulsifier used ethoxylated ALKYLPHENOLS OP 7, OP-10, neonol AF 9-10, neonol AF 9-12.

Example 1.

A solution of 24 g monoethanolamine salt of N-phosphonomethylglycine in 37 g of water are mixed with an organic solution of 15 g of OP-10 in 24 g of 2-ethylhexanol ester of 2,4-dichlorophenoxyacetic acid. The mixture was subjected to emulsification and dispersion in a bead mill for 30 minutes. 1 g of the obtained concentrated emulsion mixed with 99 g of water, determine the time of spontaneous emulsification to stand in the tank for 4 hours. The particle size of the dispersed phase of the emulsion is determined by the method of turbidity spectrum, based on measuring the spectral dependence of the optical density of the index of dispersion, with subsequent mathematical processing of the results with tables of characteristic functions.

Example 2.

The mixture is 3.

Mix a solution of 36 g IEA salt of N-MGF in 34 g of water with a solution of 12 g of neonols AF 9-12 in 18 g of the ester of 2,4-D. Next, as in example 1.

Example 4.

Mix a solution of 35 g IEA salt of N-MGF in 40 g of water with a solution of 10 g of neonols AF 9-10 15 g of the ester of 2,4-D. Next, as in example 1.

Example 5.

Mix a solution of 30 g IEA salt of N-MGF in 48 g of water with a solution of 10 g of OP-7 to 12 g of the ester of 2,4-D. Next, as in example 1.

Example 6 - the standard.

Prepare a solution of 71 g of the ester of 2,4-D and 20 g OP 7 9 g nefras AR 150/330. 1 g of the obtained mulgirigala concentrate cm sew with 99 g of water, determine the time of spontaneous emulsification and stand in the tank for 4 hours. Next, as in example 1.

Example 7 - prototype.

Prepare a solution of 14 g tetramethylmethylenediamine salt of N-phosphonomethylglycine, 19 g tetramethylmethylenediamine salt 2,4-D, 10 g OD-7 in 57 g of water. 1 g of the obtained aqueous solution overhang with 99 g of water and allowed to stand in the tank for 4 hours.

Example 8.

Field trials of herbicides is carried out on pairs of subsequent wheat. Skilled plot littered the following weeds: wild radish, dandelion, amaranth, species highlanders, cleaver, oats, etc. the Area of one plot of 10 m2the density of contamination of the site 190-210 PCs/m2Obrycki the herbicides performed 1 month after treatment by inhibition of weight wet weight of weeds, shot with 1 m2plots, in comparison with control (without herbicide). Accounting harvest spend ways solid threshing wheat. Prototype - the composition according to the patent of the Russian Federation 1665561. Repetition - four, the least significant difference NDS 095 considering harvest0,5 kg/ha To determine the synergy of two herbicides used form Colby.

Presented in table.1 data show that the proposed herbicide composition (examples 1-5) has high performance and outperforms the standard time spontaneous emulsification and particle sizes of the dispersed phase of the emulsion. In table.1 absent these characteristics for the prototype, since the latter is an aqueous solution of 2 herbicides (example 7).

The results of field experiments (table.2) indicate that the proposed concentrated emulsion has a synergy and a comparable dose of nutrient content exceeds the prototype on herbicide activity that gives the increase wheat yield by 7,3-8,2 kg/ha

Claims

Herbicide synergistic composition in the form of a concentrated emulsion based on 2,4-dichlorophenoxyacetic acid and N-phosphonomethylglycine,s salt N-phosphonomethylglycine (II) at a ratio of I:II is 1:(12,5) with the following content, wt.%: 2-Ethylhexyloxy ester of 2,4-dichlorophenoxyacetic acid - 12-24 Monoethanolamine salt N-phosphonomethylglycine - 24-36 Ethoxylated alkyl phenol - 10-15
Water - Ostalnoe

 

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