SU1161055A1 - Herbicide composition - Google Patents

Abstract

HERBICID COMPOSITION for combating perennial root weeds containing sodium X, L-dichloropropionic acid sodium salt, characterized in that, in order to increase its efficiency, the pH also contains 4-amino-3, 5,6-trichloropicolinic acid with a weight ratio of components 7: 1 respectively.

Description

This invention relates to chemical means for controlling weeds and undesirable vegetation. One of the important sections of the weed control system is protection against weeds of irrigation systems, in particular, channels with anti-filtration coatings. The most harmful weed is the camel-thorn, which intensively destroys the lining of constructed irrigation canals and other construction objects. One of the indispensable conditions for dealing with a camel thorn on irrigation canals is its complete destruction. Only 100% eradication of weed plants in the earth bed of the channels is in the subsequent guarantee of long-term and reliable operation of anti-filtration coatings. Even a relatively small percentage of weed regrowth causes significant damage. According to researches of the laboratory of operation of irrigation systems. TurkmenNIIGiM channels with anti-filtration coatings start to work as if they were in the earth channel with 0.5% of the destroyed area of facing (50 cm per 1 m of coating). Studies of the Institute of Botany of the Academy of Sciences of the TSSR established that the root of a camel's thorn neck is 5.0–0 cm in diameter. Taking into account this, the area of the destroyed facing by one plant of this weed is calculated by the diameter of the root collar and is 19.6 -28.2 cmV W. According to observations of the Land Reclamation Laboratory of TurkmenNSHiM, in the summer period, relatively plastic coatings, such as asphalt concrete, due to their softening under the influence of high temperatures, are exposed to just such a deterioration. In a cool period of time (spring, autumn), weed germination through asphalt concrete lining with its cleavage and complete separation from the coating of particles with a diameter of 8-15 cm. In this case, the area of a camel thorn destroyed by a single plant is 50.2-176.6 c In addition, over time, the survivors after the chemical treatment of weeds gradually increase their number of vegetative growth from the adventitious buds of the root collar and the horizontal roots of new plants, which accordingly increases the area of plagued by their destruction of facing. To combat perennial weeds on vegetative plants, including in reclamation systems, the ge rbicide dalapone sodium salt L, C-dichloropropionic acid C2j is recommended. However, experiments with dalapon in doses of 30–40 kg / ha for the active substance showed that in one treatment, even rhizomatous weed species that are sensitive to it are not completely killed. In connection with this, two to threefold treatments are required. After applying dalapone, there is a significant loss of leaf weeds. The growth of new leaves from the remaining viable roots, rhizomes and weed stems is observed after 15-30 days. Since dalapon is a herbicide of predominantly leaf action, repeated treatments of weed vegetation with it are timed by the same time .... As a result, treatment is carried out separately with dalapone, the root-injection plant growing less sensitive to it, produced three times with a dose of 60 kg / ha with an interval between treatments 20 days. A herbicide for controlling perennial root shoots weeds known as picloram-4-amino-3, 5,6-trichloropicolinic acid is known. However, this herbicide is extremely dangerous for many cultivated plants, especially dicotyledons. In this connection, such conditions of its application are required, under which the accumulation of piclorama in the soil and its distribution would be minimally necessary. In addition, the relatively high cost of picloram — 37.54 rubles should be taken into account. per kg f4J, which significantly affects its profitability. use, especially with significantly high doses. The purpose of the invention is to increase the effectiveness of the herbicidal composition based on sodium salt X, ot-dich

3

lorpropionic acid when used to control perennial root weeds.

This goal is achieved by the fact that the herbicidal composition based on the sodium salt ot, of. 4-amino-3, 5,6-trichloropicolinic acid is additionally introduced at a weight ratio of 7: respectively.

When conducting biological experiments dalapon used in the form of 85% water-soluble powder, and picloram in the form of 80% wettable powder.

Herbicidal composition based on dalapone and piclorama was prepared by thoroughly stirring their formulations when diluted with water.

Example 1. Perennial root-sprout weeds growing on the berms of the Kopetdagskor main distributor, among which more than 90% came from the camel thorn, were treated in June with a herbicidal composition and its individual components. The area to be treated is 20 m, the test is repeated four times. Accounting for debris was performed three months after treatment. Dalapon was deposited in cases with a twenty-day interval between the formation of the herbicidal activity of the composition and its components.

61055. four

tricks. The results of the experiment are presented in table. one.

Example 2. In the control plots and previously treated 5 plots with a herbicidal composition and its individual components, after-2 g after treatment, weed counts were taken.

The results of accounting are presented in table. 2

The results indicate a significantly greater efficiency of the herbicidal composition compared to its individual components. When using it, weeds are almost completely eradicated without subsequent regrowth.

The consumption rate of piclorama is significantly reduced (from 5 to 7 kg / ha), which is accompanied by a decrease in the toxic residues of this very persistent herbicide. At the same time, the consumption rate of dalapone is significantly reduced (from 180 to 35 kg / ha). The version of picloram-dal25 pon (3.5 + 35 kgn / ha) does not have the necessary efficiency for practical use.

The application of the proposed herbicidal composition gives econium 40 rubles per hectare compared to using one piclorama in the amount of 7 kg / ha. The calculated data are presented in table. 3

Table 1

3.5

4.0 5.0 3.5 7.0 3.8

60 + 60 + 60 3.0 3.5 + 35 5.1 5 + 35 5.2

87.5

94.3

100

80

99.02

100

Claims (1)

A HERBICIDE COMPOSITION for controlling perennial root shoot weeds containing sodium salt of Λ-dichloropropionic acid, characterized in that, in order to increase its effectiveness, the day additionally contains 4-amino-3,5,6-trichloropicolinic acid with a mass ratio of components 7: 1 respectively.