Herbicide synergistic composition for controlling aegilops tauschii in wheat field

A composition and herbicide technology, applied in herbicides, algicides, plant growth regulators, biocides, etc., can solve problems such as easy phytotoxicity, limited market value, and poor safety of wheat

Inactive Publication Date: 2018-11-02
INST OF PLANT PROTECTION HENAN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pinoxaden and methylsulfuron-methyl are less safe to wheat and prone to phytotoxicity, which severely limits the market value of pinoxaden-methylsulfuron-methyl in wheat fields

Method used

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  • Herbicide synergistic composition for controlling aegilops tauschii in wheat field
  • Herbicide synergistic composition for controlling aegilops tauschii in wheat field
  • Herbicide synergistic composition for controlling aegilops tauschii in wheat field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Control effect of pinoxaden and methylsulfuron on ryegrass multiflora

[0031] Test target: ryegrass multiflora; weed seeds were collected from wheat fields in the western suburbs of Zhengzhou.

[0032] Drug preparation: Dissolve the test drug in acetone and prepare two single-dose mother solutions. According to the results of the preliminary test, the dosage of Mesosulfuron-methyl was 240mg / L, 120mg / L, 60mg / L, 30mg / L, 15mg / L and 7.5mg / L were prepared; the dosage of pinoxaden was prepared according to 800mg / L, 400mg / L, 200mg / L, 100mg / L, 50mg / L and 25.5mg / L respectively. The two are set according to the following ratio: the ratios of methylsulfuron-methyl and pinoxaden are 1:1, 1:2, 1:4, 1:6, 1:8, 1:10 respectively, and different concentration gradients are set .

[0033] Test method: Put the sieved fine soil into a plastic pot with a diameter of 25cm to the 4 / 5 point, spread the selected weed seeds evenly on the soil surface, then cover with about 1cm of fi...

Embodiment 2

[0038] Example 2: Mixed use of pinoxaden and methylsulfuron on the control effect of japonica

[0039] Target for testing: Jiejie wheat, weed seeds collected from Yuanyang wheat field in Zhengzhou.

[0040]Drug preparation: Dissolve the test drug in acetone and prepare two single-dose mother solutions. According to the results of the preliminary test, the dosage of pinoxaden was 480mg / L, 240mg / L, 120mg / L, 60mg / L, and 30mg respectively. / L, 15mg / L were prepared; the dosage of methylsulfuron-methyl was prepared according to 60mg / L, 30mg / L, 15mg / L, 7.5mg / L, 3.75mg / L, 1.875mg / L respectively. The two are set according to the following ratio: the ratio of methylsulfuron-methyl to pinoxaden is 1:2, 1:4, 1:8, and different concentration gradients are set.

[0041] Test method: Put the sieved fine soil into a plastic pot with a diameter of 25cm to the 4 / 5 point, spread the selected weed seeds evenly on the soil surface, then cover with about 1cm of fine soil, and then carry out infilt...

Embodiment 3

[0046] Example 3: Effect of mefenpyr-methyl on the activity of mesosulfuron-methyl and pinoxaden on wheat

[0047] The tested wheat variety: Bainong 64, commercially available.

[0048] Test method: Put the sieved fine soil into a plastic pot with a diameter of 25cm to 3 / 5, sow selected wheat seeds on the soil surface, 10 plants / pot, then cover with about 2cm of fine soil, and infiltrate and irrigate with the bottom of the pot The method is to replenish water until wetting, and place it in a greenhouse for moisturizing cultivation (day temperature 22-26°C, night temperature 15-20°C, sunshine 14h, relative humidity 65%-75%). Spray treatment was carried out when the wheat seedlings grew to 1 leaf and 1 heart stage.

[0049] The results are shown in Table 3. The recommended dose of methylsulfuron-methyl is generally lower than 1g / mu. Randomly increasing the dose or uneven spraying will cause phytotoxicity. This test confirmed that when methylsulfuron-methyl was 2g / mu, wheat gro...

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Abstract

The invention discloses herbicide synergistic composition for controlling aegilops tauschii in the wheat field. Effective constituents of the herbicide synergistic composition comprise pinoxaden, mesosulfuron-methyl, sesamin and mefenpyr-diethyl, and a weight ratio of pinoxaden, mesosulfuron-methyl, sesamin and mefenpyr-diethyl is 1-8:1:0.1-6:1-6. The herbicide synergistic composition further contains auxiliaries and solvents acceptable in pesticide. After addition of the auxiliaries and the solvents, the effective constituents including pinoxaden, mesosulfuron-methyl, sesamin and mefenpyr-diethyl in the herbicide synergistic composition account for 5%-80% of total weight of the composition. The dosage form of the herbicide synergistic composition can be a dispersable oil suspension, a dispersable oil suspoemulsion or emulsifiable concentrate. The herbicide synergistic composition is remarkable in synergism, and has a wide herbicide controlling spectrum and remarkable control effect onworst weeds such as the aegilops tauschii, lolium multiflorum and the like, thereby being weeding composition which is safe to wheat and synergistic for the wheat field.

Description

1. Technical field: [0001] The invention relates to an agrochemical composition, in particular to a herbicide synergistic composition for preventing and treating barley in wheat fields. 2. Background technology: [0002] Wheat is one of the main food crops in my country. Its planting area and total output are second only to rice. The national planting area reaches more than 30 million hectares, about 450 million mu, accounting for 22-30% of the country's cultivated land area, which is about The total output of wheat is about 100 million tons, reaching 22% of the total grain output. It is the main commodity grain and strategic reserve grain variety in my country, and plays an important role in grain production, circulation and consumption. The development of wheat production is of great significance to the development of our national economy and people's lives. A. japonicus is a vicious weed in wheat fields, and it is the subject of quarantine in many countries and regions. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N47/36A01N25/32A01P13/00
CPCA01N25/32A01N43/90A01N47/36
Inventor 吴仁海薛飞徐洪乐苏旺苍鲁传涛段云
Owner INST OF PLANT PROTECTION HENAN ACAD OF AGRI SCI
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