Herbicide composition containing cyhalofop-butyl and sulfentrazone and applied to paddy field

A technology of sulfentrazone and cyhalofop-ethyl, applied in herbicides and algicides, chemicals for biological control, applications, etc., can solve problems such as complex mechanism of action, and achieve quick and long-lasting effects Excellent, enhanced prevention effect, and reduced use cost

Inactive Publication Date: 2021-07-02
INST OF PLANT PROTECTION SHANDONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reasonable compounding or compounding of chemical herbicides can expand the herbicidal spectrum, improve the control effect, extend the application period, reduce the dosage, reduce the risk of phytotoxicity, reduce the residue, and delay the occurrence and development of weed resistance and drug resistance Therefore, choosing the appropriate compound or mixture of herbicides is one of the most effective and economical methods to solve the above problems; however, due to the complex mechanism of action between the mixture of pesticides, whether the synergy after combination is affected by many factors , can only be verified by relying on experimental results, and cannot be expected

Method used

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  • Herbicide composition containing cyhalofop-butyl and sulfentrazone and applied to paddy field
  • Herbicide composition containing cyhalofop-butyl and sulfentrazone and applied to paddy field
  • Herbicide composition containing cyhalofop-butyl and sulfentrazone and applied to paddy field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 Indoor formula screening

[0022] 1. Test conditions

[0023] The tested weeds were barnyardgrass, chinensis, rice bag grass, and velvetleaf. The test specimens were cultivated in a glass greenhouse at a temperature of 25-35 °C under natural light. Sow a certain amount of barnyardgrass, chinensis, rice bag grass, and velvetleum seeds in plastic pots with a diameter of 9 cm, cover with soil 1-2 mm, put them in an enamel plate filled with water, let the water gradually penetrate, and wait for the water to soak. After infiltrating to the soil surface, transfer to artificial climate chamber for use.

[0024] In addition to not being able to water for 1 to 2 days after spraying, regularly replenish water with bottom seepage irrigation to maintain soil moisture.

[0025] 2. Experimental design

[0026] The tested medicaments were 93% cyhalofop-ethyl and 91% sulfentrazone. Use an electronic balance to weigh quantitative cyhalofop-ethyl and sulfentrazone technica...

Embodiment 2

[0039] Example 2 Field effect measurement

[0040] 1. Test conditions

[0041] Crop and cultivar selection

[0042] The rice variety is Lindao 17, which was planted live on June 20, 2018, and flooded immediately after sowing.

[0043] Selection of test subject weeds

[0044] Barnyardgrass, crabgrass, foxtail, purslane, shaped sedge.

[0045] Cultivation conditions

[0046] The experimental paddy field was located in Sujia Village, Licheng District, Jinan City, Shandong Province. The test site is loam soil with an organic matter content of about 1.7% and a pH value of 7.2. The distribution of weeds in the test field was uniform, so no other herbicides were applied during the whole test period; no diseases and pests were seen during the application of the pesticides, and 50 kg of controlled-release fertilizer per mu was applied at the same time as the rice was planted.

[0047] The test terrain is flat, the management is consistent, and the fertility and watering conditions ...

Embodiment 3

[0065] Example 3 Field effect measurement

[0066] 1. Test conditions

[0067] Crop and cultivar selection:

[0068] The rice variety is Lindao 18, which was planted live on June 10, 2018.

[0069] Selection of test subject weeds:

[0070] Setaria, barnyardgrass, velvetleaf, and amaranth.

[0071] Cultivation conditions:

[0072] The wheat field for inspection is located in Mazhuang Town, Daiyue District, Tai'an City, Shandong Province. The test site is loam soil with an organic matter content of about 1.4% and a pH value of 7.8. The weeds in the test field were evenly distributed, so no other herbicides were applied throughout the test period.

[0073] The test terrain is flat, the management is consistent, and the fertility and watering conditions are good.

[0074] Wheat was planted in the previous crop of the experimental field, and the herbicides used were florasulam + fluroxyfen.

[0075] (2) Experimental design

[0076] (1) Test drug

[0077] 30% cyhalofop-eth...

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Abstract

The invention belongs to the technical field of pesticide herbicides, and provides a herbicide composition containing cyhalofop-butyl and sulfentrazone, and the weight ratio of the cyhalofop-butyl to the sulfentrazone ranges from 1: 0.375 to 1: 24. The herbicide composition provided by the invention is used for preventing and removing annual weeds such as barnyard grass, leptochloa chinensis, Commelina bengalensis, abutilon and the like in paddy fields, and has a good synergistic effect or addition effect. According to the invention, the herbicide controlling spectrum is expanded, the control effect is enhanced, the fast-acting property and the persistence are effectively complemented, the rapid generation of weed resistance caused by using a single herbicide is avoided, the generation of weed drug resistance is delayed, the dosage is reduced, the use cost is reduced, and the environmental pollution is alleviated.

Description

technical field [0001] The invention belongs to the technical field of pesticide herbicides, in particular to a herbicide composition containing cyhalofop-ethyl and sulfentrazone. Background technique [0002] Rice is the largest grain crop in my country, with an annual planting area of ​​about 450 million mu, and it is the most important consumption variety in rations. According to the "Characteristics of Grain Consumption of Chinese Residents and the Amount of Safe Farmland", the per capita rice consumption of Chinese residents was 68.2 kg in 2011, accounting for 54.7% of the total grain consumption. There are many kinds of weeds in paddy fields, which grow fast and are easy to form weed damage. The main weeds in paddy fields are barnyardgrass, daughter of a daughter, rice bag grass, velvetleaf, crabgrass, nightshade, purslane, quinoa, paspalum , Li Shihe, etc.; etc. Weed damage seriously threatens the normal growth of rice and is an important obstacle restricting high, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/653A01N39/04A01P13/00
CPCA01N39/04A01N43/653
Inventor 高兴祥李美李健房锋
Owner INST OF PLANT PROTECTION SHANDONG ACAD OF AGRI SCI
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