Weeding composition for paddy field

A herbicidal composition, a technology for paddy fields, applied in the directions of herbicides, algaecides, biocides, animal repellents, etc., to achieve the effects of expanding the herbicidal spectrum, reducing the use of materials, and being convenient to use

Inactive Publication Date: 2017-01-04
陈雨兰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to solve the shortcomings in the use of a single compound and provide a composition with synergistic effect and wide herbicidal spectrum

Method used

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  • Weeding composition for paddy field
  • Weeding composition for paddy field
  • Weeding composition for paddy field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Synergy Example.

[0030] Put a certain amount of soil in a plastic pot with a height of 6 cm and a diameter of 9 cm, sow 15 to 20 seeds of the target weed in the plastic pot, cover it with 0.5 to 1 cm thick fine soil, and then cultivate it in a greenhouse until the weeds grow and germinate Spraying treatment was carried out every time, 1mL spray liquid per bowl, and each treatment was repeated 4 times, and the treatment without medicine was set as the control. After the treatment, the test materials were cultured in the greenhouse, and the growth of the target weeds was regularly observed. After 20 days of treatment, the fresh weight of the weeds above the ground was weighed, and the toxicity of the pesticides to the target weeds was evaluated by the inhibition rate of the target fresh weight.

[0031] The formula for calculating the weed suppression rate is as follows:

[0032] Inhibition rate (%)﹦ ×100.

[0033] According to the Colby method to evaluate...

Embodiment 2

[0052] Example 2 Composition preparation process example.

[0053] 2% penoxsulam · 3% oxaziclozone · 5% bensulfuron-methyl WP: penoxsulam 2%, oxaziculone 2%, bensulfuron-methyl 5%, pull open powder 4%, K-12 3%, sodium butyl naphthalene sulfonate 5%, sodium lignosulfonate 5%, sodium methylene bis-naphthalene sulfonate 2%, kaolin to make up 100%. Weigh the above formula in proportion, mix it evenly, grind it mechanically, and then crush it by airflow, mix it evenly, and you can get 2% penoxsulam·3% oxaziclozone·5% bensulfuron-methyl wettability powder.

[0054] 4% penoxsulam · 4% oxaziclozone · 2% pyrazosulfuron-methyl suspension concentrate: penoxsulam 4%, oxaziculone 4%, pyrazosulfuron-methyl 2%, sorbitol oil Ester 4%, sodium alginate 0.8%, NP-4 3%, propylene glycol 3%, azone 2%, sodium sorbitol 0.3%, organic silicon 5%, xanthan gum 0.2%, deionized water to make up to 100% . The above formula is weighed in proportion, mixed evenly, pre-crushed, then added to a sand mill fo...

Embodiment 3

[0057] Example 3 Field efficacy of the composition in controlling annual weeds in transplanted rice fields.

[0058] Use period: 6 days after rice transplanting.

[0059] Method of use: Mix the composition with 8 kg of urea and sprinkle it, and keep the 3-5CM water layer for 7 days after spreading.

[0060] Investigation method: 20 days after application, 5-point sampling method was used to investigate the fresh weight of weeds in each treatment.

[0061] It can be seen from Table 4 that the control effect of 2% penoxsulam·3% oxazicone·5% bensulfuron-methyl WP is 91.70~95.04%, and 4% penoxsulam·4% oxazine The control effect of grass ketone·2% pyrazosulfuron-methyl SC is 92.29~95.83%, the control effect of 2% penoxsulam·4% oxazicone·4% chlorpyrazosulfuron-methyl dispersible oil suspension concentrate is 93.83~96.25% %, 5% penoxsulam·5% oxaziclomele·20% pyrazosulfuron-methyl water-dispersible granule has a control effect of 93.43-95.97%, and the control effect of the compositi...

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Abstract

The invention provides a weeding composition for a paddy field. The weeding composition comprises effective weeding components (a), (b) and (c), with the balance being agriculturally acceptable accessory materials. The composition has improved weeding effect and a broadened weed-controlling spectrum.

Description

technical field [0001] The invention relates to the pesticide combination and its application field, which is a combination of active ingredients (a), (b) and (c), and is used for the control of annual weeds in paddy fields. Background technique [0002] Protecting crops from weeds that adversely affect growth and yield is an ongoing problem in agriculture. To help combat this problem, researchers in the field of synthetic chemistry have prepared a variety of chemicals and chemical formulations that are effective in controlling this unwanted growth. Many types of chemical herbicides have been disclosed in the literature, and a large number of chemical herbicides have been used commercially. [0003] In some cases, it has been shown that herbicidal active ingredients are more effective in combination than when they are applied alone. According to the Colby method for the evaluation of herbicide combination mode of action (NY / T 1155.7-2006) as described in the evaluation crit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/36A01P13/00A01N43/90A01N43/86
Inventor 陈雨兰张秀浓杨志雄
Owner 陈雨兰
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