Herbicide composition with topramezone and sulfentrazone applicable to corn fields

A technology of fenfentrazone and sulfentrazone, applied in herbicides and algicides, chemicals for biological control, applications, etc., can solve problems such as complex action mechanisms, achieve good results and reduce use costs , Delaying the effect of weed resistance

Inactive Publication Date: 2019-07-19
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

Method used

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  • Herbicide composition with topramezone and sulfentrazone applicable to corn fields
  • Herbicide composition with topramezone and sulfentrazone applicable to corn fields
  • Herbicide composition with topramezone and sulfentrazone applicable to corn fields

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 Indoor formula screening

[0025] 1.1 Test conditions

[0026] The tested weeds were foxtail, barnyardgrass, velvetleaf and purslane. The test specimens were cultivated in a glass greenhouse at a temperature of 25-35 °C under natural light. Sow a certain amount of foxtail grass, barnyard grass, velvetleaf, and purslane seeds in a plastic pot with a diameter of 9 cm, cover with soil 1-2 mm, put it in an enamel plate filled with water, let the water seep in gradually, and wait for the water to seep. After arriving at the soil surface, it was transferred to an artificial climate chamber for use.

[0027] In addition to not watering for 1-2 days after spraying, regularly replenish water with bottom seepage irrigation to maintain soil moisture.

[0028] 1.2 Experimental design

[0029] The test agents are 88% of the original drug of fenfentrazone and 91% of the original drug of sulfentrazone. Use an electronic balance to weigh quantitative amounts of fenflumez...

Embodiment 2

[0043] Example 2 Field effect measurement

[0044] 2.1 Test conditions

[0045] 2.1.1 Selection of crops and cultivars

[0046] Summer corn, the variety is Ludan 981, sown on June 12, 2018, and the single-grain precision sowing is 4500 grains / mu. The plant spacing is 0.6m, and the row spacing is 0.25m.

[0047] 2.1.2 Selection of test object weeds

[0048] Crabgrass, barnyardgrass, foxtail, purslane.

[0049] 2.1.3 Cultivation conditions

[0050] The experimental corn field was located in Taiping Town, Jiyang District, Jinan City, Shandong Province. The test site is loam soil with an organic matter content of about 1.6% and a pH value of 7.6. 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 corn was sown.

[0051] The test terrain is flat, ...

Embodiment 3

[0069] Example 3 Field effect measurement

[0070] 3.1 Test conditions

[0071] 3.1.1 Selection of crops and cultivars

[0072] The corn variety is Denghai 605, which was sown on June 13, 2018, and 4500 grains per mu were sown. The distance between plants is 0.6 m.

[0073] 3.1.2 Selection of test subject weeds

[0074] Setaria, barnyardgrass, velvetleaf, and amaranth.

[0075] 3.1.3 Cultivation conditions

[0076] The experimental corn field was located in Longzhuang Village, Tiexuo Town, Tengzhou 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.

[0077] The test terrain is flat, the management is consistent, and the fertility and watering conditions are good.

[0078] Wheat was planted in the previous crop of the experimental field, and the herbicides used were mesosulfuron-methyl +...

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Abstract

The invention belongs to the technical field of pesticide herbicides and provides a herbicide composition with topramezone and sulfentrazone applicable to corn fields. The weight ratio of the topramezone to the sulfentrazone is within (1:0.625)-(1:40). The herbicide composition provided by the invention is adopted to prevent and kill annual weeds such as green bristlegrass, barnyard grass, abutilon theophrasti flixweed and portulaca oleracea in corn fields, and has a good synergistic effect or addition function. By adopting the herbicide composition, herbicide controlling spectrums can be increased, effects can be enhanced, the fast-acting property and the effect lasting property are effectively complemented, the consequence that resistance of weeds can be rapidly resulted if a single herbicide is used can be avoided, drug resistance of the weeds can be retarded, the dosage can be reduced, the use cost can be lowered, and environment pollution can be alleviated.

Description

technical field [0001] The invention belongs to the technical field of pesticide herbicides, and in particular relates to a herbicide composition suitable for cornfields containing fentrazone and sulfentrazone. Background technique [0002] my country is a major producer of corn in the world, with an annual planting area of ​​about 300 million mu. The Huanghuaihai region is the largest summer corn planting area in my country. The cultivation method is mostly wheat-corn twice a year, and most of the planting forms are interplanting or iron stubble sowing. There are many kinds of weeds in cornfields, which grow fast and are easy to cause weed damage. The main weeds in cornfields are crabgrass, goosegrass, barnyardgrass, purslane, retroflexus, field bindweed, quinoa, teff, green dog tail, Cyperus cyperi, amaranthus, black nightshade, etc. Weed damage seriously threatens the normal growth of maize, and is an important obstacle restricting high, stable and high-quality maize yi...

Claims

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Application Information

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IPC IPC(8): A01N43/80A01N43/653A01P13/00
CPCA01N43/653A01N43/80
Inventor 高兴祥李美李健房锋
Owner INST OF PLANT PROTECTION SHANDONG ACAD OF AGRI SCI
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