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Agricultural composition for nematode control and its application

A composition and technology of nematodes, applied in the field of agricultural chemicals, can solve the problems of high toxicity of nematicides, achieve the effects of promoting growth, improving soil physical and chemical properties, and improving effects

Active Publication Date: 2012-03-07
HAINAN ZHENGYE ZHONGNONG HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nematicides used are highly toxic. Due to people's increasing concern for the environment and personal health, it is necessary to develop relatively safe agents

Method used

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  • Agricultural composition for nematode control and its application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 contains the biological activity assay of the composition of chitosan oligosaccharide and killing nematodes

[0026] Dilute the composition of chitosan oligosaccharide single dose, nematicide single dose, and a certain mass ratio of chitosan oligosaccharide and nematicide to a certain concentration, and then apply it to banana root-knot nematode respectively, and measure the lethality of each test agent respectively. ConcentrationLC 50 , and calculate the co-toxicity coefficient of each mixed agent according to the co-toxicity coefficient calculation formula, the results are shown in Table 1 below:

[0027] Table 1 Synergistic effect of different compound agents on root-knot nematode of banana

[0028] potion Proportion LC 50 (mg / L) co-toxicity coefficient Thiazophos - 25.1380 - Chlorazophos - 56.8363 - Ivermectin - 16.1453 - Profenofos - 24.8435 - Thiodicarb - 22.0524 - ...

Embodiment 2

[0030] The effect of embodiment 2 composition on crop growth promotion

[0031] Mix sterilized soil and sterilized river sand to form a culture soil, mix it with a nematocide composition or a single agent, mix well, add water to make the water content 40%, put it into a pot, and grow peppers with 2 true leaves The seedlings were transplanted into pots, and 7 days after transplanting, 1,000 2nd instar larvae of Meloidogyne incognita were inserted into each pot, placed in a greenhouse, and watered quantitatively. Three repetitions were set for each treatment, and the treatment not mixed with the drug was set as the blank control. After 20 days, when there were a large number of root knots in the rhizosphere of the blank control plants, the control effect was investigated. Record the number of root knots per plant, and grade according to Liu Weizhi (1995): Grade 0, no root knots; Grade 1, 1-2 root knots; Grade 2, 3-10 root knots; Grade 3, 11-30 root knots Knots; Grade 4, 31-100...

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Abstract

The invention relates to an agricultural composition for nematode control and its application. The composition comprises a nematicide and a polysaccharose substance. Specifically, the nematicide can be one or several of lythidathion, isazofos, ivermectin, profenofos, and thiodicarb. The polysaccharose substance can be chitosan or chitosan oligosaccharide. The composition of the invention combinesthe indoor activity generated by the mixing of a nematicide and a polysaccharose substance on nematodes, and reaches an unexpected synergistic effect. The polysaccharose substance can improve the physiochemical performances of soil so as to inhibit nematode activity, and can enhance the stress resistance of crops, thus having diseases prevention and growth promotion effects. Adding of the nematicide into the polysaccharose substance improves the nematode killing effect of the nematicide and simultaneously promotes crop growth.

Description

technical field [0001] The invention belongs to the field of agricultural chemicals, and in particular relates to a nematicide containing polysaccharides, a preparation method thereof and an application for controlling underground pests. Background technique [0002] Plant parasitic nematodes are one of the invasive pathogens of plants, and they are widely parasitic on the roots, stems, leaves, flowers, buds and seeds of various plants. Globally, the occurrence and damage of plant parasitic nematodes are becoming more and more serious with the change of farming system. At present, there are more than 3,000 kinds of nematodes that are harmful to plants. At present, more than 40 kinds have been found in my country. Common ones such as root-knot nematodes, cyst nematodes, pine wood nematodes, and sweet potato stem nematodes are important agricultural pathogenic nematodes. Cyst nematodes and cyst nematodes are the most harmful, and the main harmful crops are cucumber, peanut, ri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N57/32A01N43/16A01N57/16A01N43/90A01N57/14A01N47/24A01P5/00A01P21/00
Inventor 张善学侯华民陆红霞卢远倩蓝亿亿徐俊光
Owner HAINAN ZHENGYE ZHONGNONG HIGH TECH
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