SU416918A3 - HERBICIDE STRUCTURE - Google Patents

Description

one

This invention relates to chemical agents for controlling undesirable vegetation in crops of cultivated crops.

Known herbicide composition based on derivatives of substituted 1,2,4-oxadiazolidin 3, 5-dione and aniline derivatives.

However, the known compounds do not have a sufficiently high synergistic effect, as a result of which they do not possess a sufficiently high herbicidal activity and selectivity of action.

In order to enhance the herbicidal activity and selectivity of action, it is proposed to use a herbicidal composition, which is a mixture of oxadiazolidine-dione derivatives of the general formula

ABOUT

ABOUT

R-N-C-N-CHb ti / 70 CH -N-C - N - R,

 about o

where R and RI are lower alkyl of normal or iso-structure, phenyl substituted by halogen or haloalkyl, substituted carbamoyl or carbamoyloxy group, and also benzothiadiazine diaoxide derivatives of general formula

-R

where R is the lowest alkl as the second component, and the new ratios of the first component to the second are from 1: I to 1: 5, respectively.

The form of preparation of the drug is usual: in the form of dust, emulsion concentrate, solution. Example 1. Plants of barley, wheat, chamomile, gallium, chrysanthemum, mildew, alopecrus, and a cob of 3-1 cm height are treated with the following compounds or mixtures:

2-methyl-4 - (/ g-fluorophenyl) - 1,2,4 - oxadi

azin-3,5-dnone, 1.5 and 3 kg / ha;

P

2-methyl-4- (3-trifluoromethyl-phenyl) -1,24-oxadiazin-3, 5-dioimum, 1.5 and 3 kg / ha;

N- / g - fluorophenyl-M - carboxymethoxy-NIII

methyl-urea, 1.5 and 3 kg / ha;

K-lg-trifluoromethylphenylA - methyl - NIV

carboxy-msoxy-urine, 2 and 3 kg / ha;

3-isopropyl-2,1,3-benzothiadiazino - (4) V

2,2-diox1: dol, 2 and 3 kg / ha;

Benzoyl anthranilic acid VI anhydride, 2 and 3 kg / ha;

VII2 - (/. G-77 e-bugilcarbamoylphenyl) -4-methyl-1, 2,4-oxadiazolidine-3,5-dioiomes, 1 and 3 kg / ha;

VIII2 - {/, - isopropylcarbamoylphenyl) -4 thyl-1,2,4-oxa; 1iazolidnn-3,5-dione, and 3 kg / ha;

IX4- (3,4-dichlorfs1P1l) -2-methyl-1,2,4-oxadiazolidi1: -3,5-dione, 1.5 and 3 kg / ha.

Mixes, kg / ha:

I -) - VIII 1.5 + 1.5

And -fix 1,5-Ü1,5

P1 + 1X 1.5 + 1.5

IV + VII 2 +1

V + VII 2 +1

VI + VIII 1.5 + 1.5

After 3-4 pedals, we record the gerbin. Activity in points according to the 100-point scale: O-io and injuries, 100-poly death of plants.

The results are presented in table. 1 and 2.

Table 1

Example 2. Corn plants, common syti, round syty, red mildew, chicken millet, iiomei 4-18 cm high are treated with the following individual compounds or their mixtures:

IZ-isopropyl-2,1,3 - benzothiadiazinone- (4) 2, 2-dioxide, 2 and 3 kg / ha;

II2-methyl-4- {3-trifluoromethyl-phenyl) -1,2,4-oxadiazin-3, 5-dione, 1.5 and 3 kg / ha;

T a b l II c a 2

Indicator of herbicidal activity, score

III 2- (l-greg-butylcarbamoylphenyl) -4-methyl-1, 2,4-oxadiazolidine-3,5-dione, 1, 1.5, and 3 kg / ta;

I + III 2 +1 kg / ha

II + III 1.5 + 1.5 kg / ha.

The results obtained after 3-4 weeks are presented in table. 3. It can be seen from it that the mixtures, as compared with the active ingredients taken separately, have a significantly greater herbicidal action.

Example 3. Plants of wheat, barley, maize, bedstraw, amaranthus, alopecus, crown, bristle, 3-21 cm in height are treated with the following individual compounds or their mixtures:

VII4- (3-t / g 7et-butyl-carbamoyloxy - phenyl) 2-methyl-1, 2,4-oxadiazolidine - 3,5 - dione, 1.0 and 2.0 kg / ha;

VIII2-methyl-4- (3-chloro-4-bromophenyl) -1,2,4-oxadiazolidin-3, 5-dione, 2.0 and 3.0 kg / ha.

Subject invention

Herbicidal composition based on oxadiazolidine-dione derivatives of general formula

OO

(IU

R-N-C-K-CHb lysn-K-C-C-H.

IIJ I

0 COG) CO

where R and RI are normal or iso lower alkyl, substituted by halogen or haloalkyl, phenyl, substituted carbamoyl or carbamoyloxy group, optional, and with the fact that, in order to enhance the herbicidal activity, benzothiadiazinone dioxide of the general formula is introduced into it