SU558623A3 - Antidote to herbicides such as acetanilides and thiocarbamates - Google Patents

Description

one

The invention relates to a means of removing the toxic, or action of herbicides on plants and repressing the growth of plants.

It has been found that when thiocarbamates and acetanilides are used as herbicides, crop plants are sometimes severely damaged, and as a result, the yield is significantly reduced.

Attempts have been made to overcome these difficulties through the use of certain antagonistic agents, antidotes.

In order to improve the antidote effect with respect to herbicides such as acetanilides and thiocarbamates, it is proposed to use a compound of general formula I

NcWh

where X is oxygen or sulfur;

R-haloalkyl, alkyl or alkylthio;

RI - Re - hydrogen, lower alkyl, alkoxyalkyl or lower alkylol, provided that when X is oxygen, Ri and R2 is hydrogen

or methyl and RS - Re is hydrogen, then R must represent not another dichloromethane, but another radical. Distinctive feature of compounds

Formula I is that they reduce the toxic effects of acetanilides and thiocarbamates on crop plants and at the same time maintain their herbicidal effect on unwanted plants.

Oxazolidine and thiozolidine derivatives are used as intermediates, particularly in the pharmaceutical industry. In tab. 1 shows the compounds, examples of their testing are given below.

Example 1. Small boxes filled with Felton's ungraded clay-marl soil. The soil from each crate was placed in a concrete mixer with a capacity of about 19 liters and mixed with a solution of the herbicide. Prepared a basic solution of the active substance at the rate of 936 mg of 75.5% active substance per 100 ml of water. With the help of a pptric pipette, 1 ml of the basic solution was introduced into the soil.

active substance per 1 pound (453.6 g) of soil, 1 ml of the basic solution contained 7 mg of herbicide. This corresponds to 1 pound per

Table 1

Jaz,

p o l o l with II and e

Prolga 11 and (;

Continuation

1 acre of soil in shchi (1 lb / acre 1.1 kg / ha). After adding the herbicide, the soil was poured back into the crates.

For sowing, we took the crates with the soil treated and not treated with herbicides. About 550 cm of soil was collected from each crate, which was then used to cover the seeds. Before sowing, the soil was leveled, grooves were made in it about 1.2 cm deep for sowing seeds, the treated and the treated seeds were sown in alternating rows. The seeds were treated in two ways: 50 mg of the protective compound of the formula I and 10 g of corn seeds were placed in a container, thoroughly mixed; prepared a solution of the protective compound of formula 1 in 5 ml of acetone and took 0.5 ml of the basic solution to treat 10 g of corn seeds.

The protective compound has also been used in other prescription forms.

After sowing, the seedlings were placed in a greenhouse and maintained at a temperature of 21-32 ° C. After two, three and four weeks, the degree of damage to the plants was determined.

For each trial, herbicides were used both without and with the addition of compounds of formula I, as well as with compounds of formula I, in order to establish their toxicity to plants. The test results are shown in Table. 2

When 2-chloro-2,6-diethyl-M- (methoxymethyl) -acetanilide (2 lb / acr 2.2 kg / ha) was used, 0.5% of compound 145 provided 100% sorghum protection.

Example 2. Plastic crates are covered with Felton's sandy clay-marl soil. Since various herbaceous and broadleaf plants were used in these tests, dipropylthiocarbamic acid S-ethyl ester (EEDC) was injected at the rate of 0.5 and 5.0 pounds / acre (0.55 and 5.5 kg / ha), A supplement is calculated at 5 lb / acre (5.5 kg / ha).

Table

The percentage of maize damage after two weeks.

70

Seeds not processed

80 (4 weeks) with compounds of formula I

 S-Ethyldipropylthio-carbamate 6E; 6 lb / acre (1.6 kg / ha) is introduced before sowing.

 Ce.men processed 0.01% by weight. Seeds are treated with 0.5% by weight.

II

Table 3

12

Continuation

13

Continuation

14

Pro must and with

15

EEDK and the additive were introduced separately using a pipette into a soil placed in a rotating mixer with a concrete mixer with a capacity of about 19 liters. The main solutions nrnovodilk next). in a way.

A. 0.5 lb / acre (0.55 kg / ha). 670 mg of EEDC 75% diluted with 500 ml of deionized water so that 2 ml of it corresponded to 0.5 fuit / acre in a box.

B. 5 lb / acre (5.5 kg / ha). 6,700 mg of EEDC was diluted with 500 ml of deionized water so that 2 ml of solution corresponded to 5 pounds per acre in a case.

Additive solutions were prepared by diluting 102 mg of a technical product with 10 ml of a 1% aqueous solution of Tween 20 (polyoxyethylene sorbitol monolaurate) so that 2 ml of the solution corresponded to 5 pounds per acre in the puppy.

After treatment with herbicide and addition, the soil was transferred from the displacer back to the crates, where it was prepared for the nasadac.

Initially, about 550 cm of soil was removed from each crate, which was used to seed the seeds after sowing. Then, the soil in the box was leveled and made 1.1 cm deep grooves in it. The soil was treated with 5 lb / acre of EEDC, and the seeds of maize, sugar beet, sunflower, cotton, and oily rape were sown. Sowed with red oats, sorghum, soft pasta, foxtail, rice and barley were planted with soil treated at the rate of 0.55 kg / ha of EEDC. Then the seeds were covered with soil, taken before sowing.

Yapdpkp put in greenhouses, where they maintained the temperature of 21-32 ° C. The soil was watered by spraying, sufficient for good plant growth.

After two li four weeks after treatment, the extent of the damage was determined. Soil was also prepared, treated with only 0.5 or 5.0 lb / acre (0.55 and 5.5 kg / ha) of EEDC.

The percentage of protection was determined by comparison with the variants in which the soil was not treated with the proposed mineral substances. The results are given in table. 3

When used together with 2-chloro-2,6 diethyl - N - (methoxymethyl) - acetanilide (2 lb / acr 2.2 kg / ha) of compound 1 and 30 (5 lb / acre 5.5 kg / ha) after 4 weeks 100% sorghum protection is provided. Compound 1 provides 67% protection for the workshop.

When used together with 3- (3,4-dichlorophenyl) -, 1-dimethylurea (1 lb / acre, 1 kg / ha) each of compounds 1 and 30 (5 lb / acre 5.5 kg / ha) gives 60% cotton protection; Compound 1 also provides 60% protection for maize and a compound 30 for 43% protection of maize.

The protective compounds and compositions of this invention may be used in any conventional form. For example, they can be in the form of emulsified liquids emulsified with 1 P 1I: NTR) TP1, liquids. GMg1ch1 P, IM) 1P

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nopoHiKa, a simple powder coat, granules. The preferred non-toxic to the plants the amount of the occlusive compound to be mixed with the selected herbicide and viosig in the soil before or after sowing the seeds. However, you can first apply herbicides to the soil, and then a protective compound. In addition, seeds of cultivated plants can be treated with a non-toxic amount of the compound and planted lix in the soil, pretreated or not harvested with herbicides, and then processed with the latter. The added protective compounds do not affect the activity of the herbicides.

The amount of the protective compound may be in the range of about 0.0001-30 wt. h. on 1 weight. herbicide h. The exact amount of the protective compound is usually established for economic reasons for the most efficient use. In the herbicidal compositions described herein, it is necessary to use zapditnye compounds in amounts non-toxic to plants. Herbicides listed in the tables and descriptions of the scientific research institutes are used in quantities that ensure the effective destruction of undesirable vegetation.

Herbicides of the classes listed here are effective agents. The degree of activity of herbicidal compounds and their combinations may be equal. The degree of susceptibility of different plants in the isolation of specific herbicides and their combinations also changes. Therefore, you can choose specific herbicides and their combination for eliminating unwanted plants. Isob}) etenie and seeks to prevent damage to cultivated plants in the presence of specific compounds or combinations of them. Plants that can be protected in this way are not limited to the specific cultures indicated in the examples.

The herbicides used in accordance with the invention are active herbicides of a general type, effective against very diverse plants. A method of controlling undesirable plants is to apply an effective amount of said herbicidal compounds to the surface.

or to the place of germination of a plant.

Claims (1)

Applied compositions comprising EEDK, S-etildiizobutiltiokarbamat, S-iropildipropiltiokarbamat, 5-2,3,3-trichloroallyl ldiizopropiltiokarbamat, S-etiltsiklogeksiletiltiokarbamat, 2-chloro-2,6-diethyl-K (methoxymethyl) acetanilide, S-ethyl hexahydro -1 H-azepin-1-carbonate, 2-chloro-N-isopropylacetanilide, N, N - diallyl-2-chloroacetamide, S-4-chlorobenzyldiethylthiocarbamate, 2-chloro-4ethylamine - 6 - isopropylamine - - triazine, 2-chloro -4,6-bis- (ethylamine) -c "/ yl-triazine, 2- (4-b-ethylamine-ses. And.and - triazin-2-ylamine) -2-methyl-propionic nitrile, 2-chloro-4-cyclocyroyl. mi (1-6-isopropylamine-c "lsh - three Zine, 2,4-dichlorfpukspuksusuchnuyu acid, OS EfIRY and SP 17 li and 3- (3,4-dichlorophenyl) -l, l-dimethyl ose and their combinations.The term herbicide used here means a compound that kills or changes It grows vegetation, including everything from normal growth from normal development, such as death, growth retardation, foliar growth, drying, growth regulation, short stature, tillering, and iriostaiow growth stimulation. By plant is meant the germinating seeds, appearing seedlings and approved with the vegetation, including the roots and the ground parts. ., The formula of isooorrhea, the application of the general formula 18 -J j to n i where X is oxygen or sulfur; R is haloalkyl, alkyl or alkylthio; Ri - Re - hydrogen, lower alkyl, alkoxyalkyl or lower alkylol, iri provided that when X is oxygen, Ri and R2 is hydrogen or methyl and Rs - Re is hydrogen, then R long must be non-di chloromethyl. ,, „As an antidote to herbicides such as acetaiylides and TiiOK: ip6aN aToii.