SU585795A3 - Herbicide - Google Patents

Description

one

This invention relates to chemical means of controlling undesirable vegetation in cultivated crops, in particular to means based on derivatives of mixed carbamate.

Known herbicide remedy Y. , M-diallyl-chloroacetamide 1,

It is also known herbivalent agent containing as active substance ff-cyclopropyl dichloro-amide 2,

The prototype of the invention is a herbicidal agent containing, as an active substance, vinyl carbamate derivatives of the general formula

RiO-co-N- :: H: c 3

SNS

where phenyl, naphthyl, digitsrobenzo-

furanyl or benzothiophonyl; KriR - hydrogen or methyl 31.

However, these funds are not sufficiently active in crops of cereal crops for dicotyledonous weeds.

With the aim of enhancing herbicidal activity and selectivity of action, it offers, with a herbicidal agent,

active substance M-alkene (-1) -yl - (- 1) -mono-halogen-acetamide o6uiefi formula

Kg "5 R, -CH2-C-: N-C C -k.

. II I

o Rr;

where chlorine or 6poMj Ri is alkyl C-Cg or cycloalkyl C 6 CydHv hydrogen or alkyl C | - Cj or RI, - form a polymethylene cyclic bridge, provided that the sum of the carbon atoms of the radicals Rj, P3 is from 1 to 8; Rj - alkyl C - Suily alkoxyalkyl C - Cd or alkenyl C, - C, as well as an additive selected from the group of solvent, emulsifier, dispersant, and the weight content of the active substance is from 0.5 to 80 wt.%.

AT . 1 shows compounds studied as herbicides of the general formula (4).

Table 1

Example. A dose of 0.5; 1, O; 2, O; 45 4.0 kg / ha of soitsineny listed in the table,, cultivate the soil in which | seeds of barley, wheat, maize, sorghum, rvsa, 1soi, cotton, sugar beet, and weeds, such 50, were planted. as duyerna, wild ox, chaff, l coarse, syt, wood louse, hedgehog, chicken millet.

sesbani, width ,. daddy, mustard, imp - ma, mast, sid, timothy.

Bf, f-diallyl-chloroacetamide was taken as a reference.

After 20 (the right handy, the herbicidal activity was scored in points: O - no damage; 9 - full plant death.

The test results are shown in Table. 2

eleven

12

13

Claims (3)

PRI me R 2. Twelve-oat plants of barley, wheat, corn, sorghum, rice, soybean, cotton, sugar beet, as well as alfalfa, oat, chaff, foxtail, haze, chestnut, chicken millet. - Vlken (-1) -yl - (- 1) - mono-halogen acetamide-55 da, as well as an additive selected from the group of solvent, emulsifier, dispersant, in order to enhance the herbicidal activity and selectivity of action, means in ka- 60 14 treated with a dose of 0.5} 1, O; 2.0; 2, O kg / ha of compounds 1, 2, 7, 11 and the standard. After 15 days, the herbicidal activity was scored. The results are shown in Table. 3 Table 3 The number of derivatives of M-alkene - (- 1) -yl - (- 1) -halogen-acetamide contains the total formula c. From HI CHg- with -N - with ov, | j O B5 15 gae is chlorine or bromine; Rj-alkyl-C - C | or cycloalkyl Cj -Cg; Rg and Ri, hydrogen or l, Cj -Cj or Sfj and Cr, form a polymethylene cyclic bridge, provided that the sum of the carbon atoms of the rashes FJj and li is from 1 to 8; - alkyl Cj Cg or alkoxyalkyl Cj-C If Cp-C, or alkenyl and the weight content of the active substance is from 0.5 to 80 weight. % 16 Sources of information taken into consideration in the examination: 1. US Patent No. 2864683, Cl, 71-25, 969. 2. For the Federal Republic of Germany No. 2245471, Cl. 45 September 19/02, 1973. 3. The patent of England No. 1366801, cl. A 5 E, 1974.