Herbicide composition aiming at corn safety

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

Active Publication Date: 2014-04-16
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 composition aiming at corn safety
  • Herbicide composition aiming at corn safety
  • Herbicide composition aiming at corn safety

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: the preparation of 4% nicosulfuron suspension concentrate

[0020] Nicosulfuron 4% (weight); Isoxadifen potassium salt 1% (weight); Emulsifier 12% (weight); Dispersant 6% (weight); Solvent 77% (weight).

[0021] The components are mixed together, sheared, crushed (in a sand mill), mixed.

Embodiment 2

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

[0023] rimsulfuron-methyl 2% (weight); nicosulfuron 4% (weight); isoxadifen potassium salt 1% (weight); emulsifier 10% (weight); dispersant 5% (weight); solvent 78% (by weight).

[0024] The components are mixed together, sheared, crushed (in a sand mill), mixed.

Embodiment 3

[0025] Embodiment 3: the preparation of 5% rimsulfuron-methyl water-dispersible granules

[0026] rimsulfuron-methyl 5% (weight); isoxadifen potassium salt 2.5% (weight); wetting agent 5% (weight); dispersant 4% (weight); filler 81% (weight).

[0027] Mix rimsulfuron-methyl, isoxadifen potassium salt, wetting agent, dispersant, and filler in a mixing kettle, then pulverize through airflow, and extrude to granulate 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 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, can It is absorbed by the stems, leaves and roots of weeds, and then conducts in plants, causing growth stagnation, chlorosis of stems and leaves, and gradual death of sensitive plants. Generally, they die within 20-25 days. Nicosulfuron and rimsulfuron have many advantages, such as wide 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 corn 3 leaves to It is relatively safe ...

Claims

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Application Information

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