Chemical herbicide for crops

A technology for herbicides and crops, applied in the field of chemical herbicides for crops, can solve problems such as difficult effects, long development cycle, and high development costs, and achieve the effects of reducing pollution, improving drug efficacy, and reducing production and use costs

Inactive Publication Date: 2014-01-08
李长敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the development cost of new active ingredients is high, the development cycle is long, and it can never keep up with the speed of weed resista

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take the preparation of 1 ton of 55% oxadiazone · pendimethalin wettable powder as an example.

[0016] Formula: oxadiazone 250kg: pendimethalin 300kg, wetting agent sodium lauryl sulfate 20kg, dispersant calcium lignosulfonate 80kg, filler white carbon black 180kg, filler kaolin 170kg.

[0017] Preparation method: Add oxadiazone and pendimethalin to white carbon black and kaolin according to the above formula ratio, and add wetting agent sodium lauryl sulfate and dispersant agent calcium lignosulfonate to mix, then air-jet milling Then mixed to obtain a wettable powder. The main equipment is a mixer and a jet mill.

Embodiment 2

[0019] Take the preparation of 100 kg of 55% oxadiazone pendimethalin water dispersible granules as an example.

[0020] Formula: 25kg of oxadiazone, 30kg of pendimethalin, 10kg of sodium dodecylbenzenesulfonate as a wetting agent, 15kg of alkylnaphthalenesulfonate formaldehyde condensate as a dispersant, and 20kg of attapulgite as a filler.

[0021] Preparation method: Add oxadiazone and pendimethalin into attapulgite according to the above formula ratio, and add wetting agent sodium dodecylbenzenesulfonate and dispersant alkylnaphthalenesulfonate formaldehyde condensate to mix , add 10-25% water after jet crushing, and then knead, granulate, dry, and sieve to obtain water-dispersible granules; or spray water and granulate the pulverized powder in a boiling granulator , dried, and then sieved to obtain the product. The main equipments are mixer, jet mill, kneader, extrusion granulator, drying room or fluidized bed drying, or boiling granulator, screening machine.

Embodiment 3

[0023] Take the preparation of 1 ton of 55% oxadiazone pendimethalin EC as an example.

[0024] Formula: 250kg of oxadiazone, 300kg of pendimethalin, Nongru 500# and Nongru 600# as emulsifier, 40kg and 50kg respectively, N, N-dimethylformamide 110kg and xylene 250kg as solvent.

[0025] Preparation method: Add oxadiazone and pendimethalin into xylene according to the above formula ratio, and add emulsifiers Nongru 500# and Nongru 600#, solvent N, N-dimethylformamide, Stir in a stirring mixing tank to mix evenly. The stirring and mixing kettle can be enamel reaction kettle, stainless steel stirring kettle, etc.

[0026] Practical farming experiments show that the combination of diomazone and pendimethalin overcomes the shortcomings of the two alone and has a significant synergistic effect. Observed during the test, the crops had no symptoms of phytotoxicity, and the test chemicals were safe to the crops.

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PUM

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Abstract

The invention relates to a chemical herbicide for crops. The chemical herbicide comprises effective components including oxadiazon and pendimethalin, wherein the weight ratio of the oxadiazon to the pendimethalin is 25 to 30. The chemical herbicide has an obvious synergistic effect and the pesticide effect is improved greatly; the pesticide effect is improved and the use amount of effective components in a field is reduced; the production cost and the use cost are reduced and herbicide residues are reduced and environmental pollution is alleviated; the compound herbicide is composed of effective components of different function mechanisms and the number of the acting sites is increased, so that the generation of the drug resistance of weeds is overcome and delayed; the chemical herbicide for the crops is an important manner for comprehensively preventing the weeds in the field.

Description

technical field [0001] The invention relates to a crop chemical herbicide containing oxadiazon and pendimethalin. Background technique [0002] Herbicide varieties containing a single active component often have different degrees of defects in the control of weeds in agricultural fields. For example, weeds are prone to resistance after continuous application, the herbicide spectrum is narrow, and frequent applications will aggravate environmental pollution. One way to control agriculturally resistant weeds is to introduce new ingredients that are not cross-resistant with existing varieties. However, the development cost of new active ingredients is high, the development cycle is long, and it can never keep up with the speed of weed resistance. Other methods, such as crop layout adjustment, rotation of different pesticides, etc., are difficult to achieve obvious effects in actual operation. Combining ingredients from different varieties is the most common method for control...

Claims

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Application Information

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IPC IPC(8): A01N43/824A01P13/00A01N33/18
Inventor 李长敏
Owner 李长敏
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