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Composition of dithiocyano-methane and macrolide insecticide component

A technology of dithiocyanomethane and macrolides, applied in the directions of biocides, nematicides, biocides, etc.

Active Publication Date: 2014-07-09
HAINAN ZHENGYE ZHONGNONG HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among the existing nematicides, fenamifos, fenamifos, carbofuran, isofenphos-methyl, thifamifos, and chymecarb are highly toxic nematicides, and dibromochloropropane is a typical reproductive poison. Due to people's increasing concern about the environment and personal health, it is necessary to develop relatively efficient and safe agents

Method used

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  • Composition of dithiocyano-methane and macrolide insecticide component
  • Composition of dithiocyano-methane and macrolide insecticide component
  • Composition of dithiocyano-methane and macrolide insecticide component

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Effect test

Embodiment 1

[0016] Dithiocyanomethane single agent, avermectin single agent, ivermectin single agent, emamectin benzoate single agent, spinosad single agent and certain mass ratio compositions are diluted to certain different concentrations. Drop the quantitative dilution containing root-knot nematode on the glass slide, and count under the microscope; in the same way, microscopically examine the dilution of root-knot nematode mixed with the quantitative medicament, count under the microscope, and measure the lethal middle concentration LC50 of each test agent respectively, Calculate the co-toxicity coefficient (CTC value) of the composition according to Sun Yunpei's method. If the CTC value is greater than 120, it is a synergistic effect. The specific method is as follows.

[0017] Set a single dose (A) as the standard single dose, specify its toxicity index (TI) as 100, then:

[0018]

[0019]

[0020] Theoretical toxicity index (TTI) of the mixture = ΣTI of each single agent × th...

Embodiment 2

[0026] The control effect of embodiment 2 composition to crop nematode

[0027] Mix sterilized soil and sterilized river sand to form a culture soil, mix it with a nematocide composition or a single dose, mix well, add water to make the water content 40%, put it into a pot, and grow cucumbers with 2 true leaves The seedlings were transplanted into pots, and 7 days after transplanting, 500 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 plant height and control effect were 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 roots Knots; Gra...

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Abstract

The invention relates to a composition of dithiocyano-methane and macrolide insecticide component. The macrolide insecticide component is one of abamectin, ivermectin, emamectin benzoate and pleocidin. The mass ratio of the dithiocyano-methane to the macrolide insecticide component is (0.05-50):1, and the mass sum of the dithiocyano-methane and the macrolide insecticide components accounts for 0.1-60 percent of the total mass of the composition. The composition is used for controlling nematode, is applied to crops suffering from nematode pest invasion or soil in which the crops grow, and the application dosage of the composition is 50-2000mg / kg.

Description

technical field [0001] The invention belongs to the field of plant protection, in particular to the composition of dithiocyanomethane and macrolide insecticidal components and its application. 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, rice, soybean, wheat, tobacco, potato, citrus, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N47/48A01N43/90A01N43/22A01P5/00
Inventor 侯华民张善学陈坚王少龙陈泰龙陈其确
Owner HAINAN ZHENGYE ZHONGNONG HIGH TECH
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