Herbicide composition and application thereof

A herbicide composition and composition technology, applied in the direction of herbicides and algicides, applications, biocides, etc., can solve the problems of herbicide compositions that have not been reported, and achieve the goals of fast weeding, crop safety, and good application prospects Effect

Inactive Publication Date: 2017-08-22
张建华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are some reports that metolachlor is compounded with other active ingredients, and there are also reports that furansulcotrione is compounded with other active ingredients, but the herbicide composition compounded by these two active ingredients is not No report

Method used

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  • Herbicide composition and application thereof
  • Herbicide composition and application thereof
  • Herbicide composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 Experiment of the herbicidal activity of the mixed use of refined metolachlor and furansulcotrione in different proportions

[0018] Use an appropriate amount of acetone to dissolve furansulcotrione and metolachlor pure, and then dilute with 0.1% Tween 80 aqueous solution to prepare a single-dose mother solution, which is diluted according to the experimental design and then prepared for later use.

[0019] Select refined metolachlor (code A): 300, 375, 450, 525 and 600g ai / ha (codes A1-A5 respectively); furansulcotrione (code B): 450, 525, 600, 750 and 900g ai / ha (numberings are B1~B5 respectively), and each dose is mixed into 25 compoundings to form 25 examples for processing.

[0020] Echinochloa crusgalli and Leptochloachinensis, the main weeds in direct-seeding paddy fields, were selected as the experimental targets. The tested weed seeds were collected from the direct-seeded paddy fields of the previous year.

[0021] The soil used for the test is the ...

Embodiment 2

[0026] Example 2 Experiment of the joint action type of the mixed use of different ratios of refined metolachlor and furansulcotrione on the test target

[0027] The rationality of the joint action type and ratio of two herbicides was evaluated by Gowing method.

[0028] E number of plants control effect (%)=(number of control weeds-number of treated weeds)*100 / number of control weeds

[0029] E. 0 =X+Y-XY / 100

[0030] In the formula:

[0031] X represents the weed control effect of herbicide A when the dosage is P;

[0032] Y represents the weed control effect of herbicide B when the dosage is Q;

[0033] E. 0 Indicates the theoretical weed control effect of herbicide A+B when the dosage is P+Q;

[0034] E represents the actual weed control effect of each treatment.

[0035] When E-E 0 >10% is synergism, when E-E 0 Antagonism when 0 When it is between ±10%, it is an additive effect.

[0036] Table 2 Test of the type of joint action of the mixed use of different rati...

Embodiment 3

[0040] Example 3 The herbicidal effect of mixed use of different ratios of refined metolachlor and furansulcotrione on sedge and crabgrass

[0041] According to the same method as in Example 1, 25 kinds of compound herbicidal compositions formed by preparing different ratios of refined metolachlor and furansulcotrione were tested for their effects on other common weeds, sedges and horseshoe crabs in paddy fields. Tang's herbicidal effect, and according to the method of embodiment 2, the type of its joint action is tested.

[0042] The test results show that the herbicidal activity data of different proportioning herbicide compositions are tested by Gowing method to test weed sedge, crabgrass, E-E 0 More than 10% in different degrees, individual ratio E-E 0 value over 20%.

[0043] The results show that the two medicaments tested can improve the herbicidal activity and expand the herbicidal spectrum after being mixed according to the proportion of the present invention. All ...

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Abstract

The invention belongs to the field of herbicides, and in particular relates to a herbicide composition and an application thereof. The herbicide composition comprises metholachlor and tefuryltrione as effective components. The herbicide composition is prepared by compounding the single herbicides metholachlor and tefuryltrione aiming at paddy land weed and is an improvement on the single herbicides, so the cost of the herbicide is reduced, the convenience and efficiency in weeding are improved, and the herbicide is safe to crops and easily degraded. The herbicide composition with specific proportioning has an obviously better weeding effect on paddy land weed than single use of the herbicides before compounding, has an obvious synergic effect and is of great importance on the development of weeding herbicides.

Description

technical field [0001] The invention belongs to the field of herbicides, and in particular relates to a binary compound herbicide composition and its application. Background technique [0002] Metolachlor, English name metolachlor, CAS accession number 178961-20-1, chemical name 2-chloro-6-ethyl-N-(2-methoxy-1-methylethyl)acetyl-o- Aniline is a high-efficiency, low-toxicity, low-residue selective pre-emergence herbicide, suitable for soil treatment of dryland crops after sowing, pre-emergence or before transplanting, and can control annual grass weeds, some dicotyledonous weeds and Annual weeds in Cyperaceae, such as barnyardgrass, crabgrass, brachiaria, goosegrass, foxtail, special-shaped sedge, broken rice sedge, shepherd's purse, amaranth, commelina and Polygonum, etc. S-metolachlor is the S active isomer of metolachlor, so it is also called S-metolachlor. [0003] Furansulcotrione, also known as Tefuryltrione, development code AVH-301, English common name tefuryltrione...

Claims

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Application Information

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IPC IPC(8): A01N43/08A01N37/22A01P13/02A01M21/04
CPCA01N43/08A01M21/043A01N37/22A01N2300/00
Inventor 李剑英吴清来张建华
Owner 张建华
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