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Herbicide compositions safe for corn

A composition and herbicide technology, applied in the direction of herbicides, algicides, biocides, biocides, etc., can solve the problems of unusable, sensitive, prone to phytotoxicity and appropriate period of application, and achieve simple preparation and use safe effect

Active Publication Date: 2016-08-24
SHANDONG CYNDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nicosulfuron and rimsulfuron have many advantages, such as broad herbicidal spectrum, low price, and high activity; but their disadvantages are that they are prone to phytotoxicity and short application period under high temperature and high humidity conditions (in the case of corn 3 leaves to It is relatively safe to use at the 5-leaf stage, and the suitable time for use is short); different corn varieties have different sensitivities to nicosulfuron and rimsulfuron, and the order of safety is dent>hard corn>popcorn>sweet corn
It is sensitive to sweet corn, sticky corn, popcorn and seed corn, and cannot be used
[0003] Differences in corn varieties limit the use of nicosulfuron and rimsulfuron-methyl, and most corn varieties need directional spraying to reduce the phytotoxicity of nicotinic acid, which limits their large-scale mechanized use

Method used

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  • Herbicide compositions safe for corn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: Preparation of 4% nicosulfuron suspension

[0020] Nicosulfuron 4% by weight; bisoxazolic acid potassium salt 1% by weight; emulsifier 12% by weight; dispersant 6% by weight; solvent 77% by weight.

[0021] The ingredients are mixed together, sheared, pulverized (in a sand mill), and mixed.

Embodiment 2

[0022] Embodiment 2: the preparation of 6% nicosulfuron-methyl, rimsulfuron-methyl suspension

[0023] rimsulfuron 2% by weight; nicosulfuron 4% by weight; dibenoxazole potassium salt 1% by weight; emulsifier 10% by weight; dispersant 5% by weight; solvent 78% by weight.

[0024] The ingredients are mixed together, sheared, pulverized (in a sand mill), and mixed.

Embodiment 3

[0025] Example 3: Preparation of 5% rimsulfuron-methyl water dispersible granules

[0026] 5% by weight of rimsulfuron; 2.5% by weight of potassium dibenoxazole; 5% by weight of wetting agent; 4% by weight of dispersant; 81% by weight of filler.

[0027] The rimsulfuron-methyl, potassium dibenoxazole salt, wetting agent, dispersant, and filler are mixed in a mixing kettle, and then pulverized by air flow, and extruded and granulated to a suitable particle size.

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Abstract

The invention relates to the field of herbicides and in particular discloses a herbicide composition aiming at corn safety. The herbicide composition aiming at corn safety is characterized in that active components comprise isoxadifen-ethyl salt, nicosulfuron and / or rimsulfuron; the weight ratio of the isoxadifen-ethyl salt, nicosulfuron and / or rimsulfuron is 1:(0-50):(0-50). The herbicide composition disclosed by the invention is easy to prepare and safe to use, can be applied to sweet corns, sticky corns, pop corns, corns for seeds and the like as well as common corns with more than five leaf stages and is very safe to the corns; the using amount can be four times larger than those of the common nicosulfuron and the common rimsulfuron.

Description

(1) Technical field [0001] The present invention relates to the field of herbicides, in particular to a herbicide composition safe for corn. (2) Background technology [0002] Nicosulfuron, chemical name: 2-(4,6-dimethoxypyrimidin-2-ylcarbamoylaminosulfonyl)-N,N-dimethylnicotinamide, rimsulfuron, chemical name: 1-(4,6-Dimethoxypyrimidin-2-yl)-3-(ethylsulfonyl-2-pyridinesulfonyl)urea, the above two substances are important systemic herbicides in corn fields, which can It is absorbed by the stems, leaves and roots of weeds, and then conducts in the plant, causing the growth of sensitive plants to stagnate, the stems and leaves to turn chlorotic, and gradually die. Generally, it will die within 20-25 days. Nicosulfuron and rimsulfuron have many advantages, such as broad herbicidal spectrum, low price, and high activity; their disadvantages are that they are prone to phytotoxicity under high temperature and high humidity and have a short medication period (from 3 leaves of corn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N47/36A01P13/00A01N25/32
Inventor 王强
Owner SHANDONG CYNDA CHEM
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