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Compound for killing weeds in water body

A composition and water body technology, applied in the field of pesticides, can solve the problem of no killing effect on underground vegetative organs

Pending Publication Date: 2019-01-11
温文 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Diquat is a kind of contact herbicide, which is widely used in water bodies in other countries. It has a fast killing effect and is friendly to the environment, but it has no killing effect on underground vegetative organs.

Method used

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  • Compound for killing weeds in water body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Embodiment 1. Diquat and mesotrione mixed use synergistic effect on the activity of duckweed (Lemna minor)

[0009] Cultivate duckweed indoors with nutrient solution.

[0010] Experimental treatment: According to the pre-test results, the concentration of diquat single-use treatment was set at 10, 50 and 100 mg / L, the concentration of mesotrione single-use treatment was set at 10 and 20 mg / L, and the concentration of diquat + mesotrione was set at 10+10 (1:1), 50+10(5:1), 100+10(10:1), 10+20(1:2), 50+20(2.5:1) and 100+20(5:1) mg / L six ratios. A control group without medication was also set up. The treatment agent is added to the duckweed culture solution. Each treatment was repeated 4 times.

[0011] Data investigation and statistical analysis: 14 days after treatment, the number of dead duckweed was measured. Calculate the weeding effect according to the following formula:

[0012] Actual herbicidal effect (%)=(contrast duckweed survival number-treatment duckweed...

Embodiment 2

[0022] Example 2: 20% Diquat and Mesotrione Mixture (5:1) Determination of Duckweed Activity

[0023] Cultivate duckweed with nutrient solution indoors, and then add a mixture of 20% diquat and mesotrione with a series of concentration gradients to the duckweed culture solution. After 14 days of treatment, evaluate the 20% diquat and mesotrione according to the survival number of duckweed. Activity of mesotrione mixture against duckweed. Herbicidal effect%=(the survival number of duckweed of blank-the survival number of duckweed of treatment) / (the survival number of duckweed of blank)×100, and calculate EC 50 value.

[0024] The test obtained 20% diquat and mesotrione mixture on duckweed EC 50 It is 18mg / L.

[0025] The test results show that the 20% mixture of diquat and mesotrione has a good killing effect on duckweed.

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Abstract

The invention discloses a compound for killing weeds in water body. The compound is prepared from active ingredients aquacide and mesotrione at weight ratio of (0.5-10):1. The compound is capable of effectively killing weeds in water body, is wide in herbicide controlling spectrum, is low in dosage, is safe to water environment and is low in cost.

Description

Technical field: [0001] The invention relates to a composition for killing weeds in water bodies, belonging to the technical field of pesticides. The present invention further relates to the composition of diquat and mesotrione for killing weeds in water bodies and its use. Background technique: [0002] The outbreak of weeds in the water body aggravates the pollution of the water body and seriously restricts the development of my country's economy. Many scientific and technological workers are trying to find and develop efficient, low-toxic, and environmentally friendly methods to kill weeds in water bodies and prevent water pollution. [0003] Diquat is a contact herbicide, which is widely used in water bodies in other countries. It has a fast killing effect and is environmentally friendly, but it has no killing effect on underground vegetative organs. [0004] Mesotrione (also known as mesotrione, nitrosulcotrione) is a pre-emergence and post-emergence broad-spectrum se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N41/10A01P13/00
CPCA01N41/10A01N43/90
Inventor 温文苏亮星楚冀通
Owner 温文