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Nematicidal composition for meloidogyne incognita and application thereof

A technology for killing nematodes and nematodes of southern root-knot nematode is applied in the field of pesticide application, which can solve the problems that the actual efficacy of the pesticide composition cannot be confirmed, the actual efficacy cannot be verified, and the like, and achieves a technology that is conducive to drug resistance control and delaying drug resistance. The effect of generating and developing, reducing pollution

Inactive Publication Date: 2020-12-15
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] After searching, it was found that the patent No. CN201210180211.9, the invention patent of the authorized announcement No. CN102696673B, the insecticide composition disclosed in its published text contains thiazophos and at least one systemic insecticide, and the systemic insecticide There are a variety of drugs to choose from, but in its authorized text, only the combination of thiazophosphine and thiamethoxam is authorized, which shows that the patent cannot confirm the actual efficacy of the remaining combinations; at the same time, the patent does not specifically The drug efficacy verification is carried out against M. incognita (especially M. incognita). Therefore, the actual efficacy of the insecticide composition involved can not be confirmed against M. incognita (especially M. incognita)

Method used

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  • Nematicidal composition for meloidogyne incognita and application thereof
  • Nematicidal composition for meloidogyne incognita and application thereof
  • Nematicidal composition for meloidogyne incognita and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This example is an indoor toxicological determination of thiazophosphine and imidacloprid single agent and various ratio mixtures.

[0039] (1) Material of root-knot nematode incognita

[0040] Meloidogyne incognita populations were collected from Nanjing, Jiangsu, and kept in the greenhouse of the Jiangsu Academy of Agricultural Sciences with the tomato Moneymaker variety as the host. Meloidogyne incognita egg masses were isolated, and the oocysts were hatched in an indoor incubator to obtain a large number of indoor toxicological bioassay sources of M. incognita. The bioassay object was the 2nd instar larva of M. incognita.

[0041] (2) Isolation of Meloidogyne incognita

[0042] Select tomato plants with obvious root knots, wash off the root sediment, chop the roots with scissors, put them in a 500mL sealed bottle, add 10% bleach and shake vigorously for 5min. The nematodes and nematode eggs in the root tissue were collected by filtering through 80-mesh, 300-mesh a...

Embodiment 2

[0060] This embodiment is an indoor pot test of the compound agent of thiazophos and imidacloprid.

[0061] The optimum mass ratio of thiazophosphine and imidacloprid screened out according to the results of indoor toxicity determination in Example 1 is 1:3, and the root-knot nematode on tomato is used as the control object, and the mixed nematocide of thiazophosphine and imidacloprid is used for indoor potting test. The specific experimental method is as follows:

[0062] (1) Material of root-knot nematode incognita

[0063] The root-knot nematode colony was raised in the greenhouse of the Jiangsu Academy of Agricultural Sciences, with the tomato Moneymaker variety as the host, the greenhouse temperature was 28±2°C, the relative humidity was above 70%, 14 hours of light: 10 hours of darkness, and tomatoes with obvious root knots were selected. Plants, isolate the egg masses of M. incognita, hatch the oocysts in an indoor thermostat, and obtain a large number of test insect ...

Embodiment 3

[0089] This example is a field efficacy test of the compound of thiazophos and imidacloprid.

[0090] The optimal mass ratio of thiazophos and imidacloprid 1:3 and the results of the pot plant test of embodiment 2 screened out according to the results of indoor toxicity determination in Example 1, further take the root-knot nematode on tomato as the control object, to thiazophos and imidacloprid Mixed nematicides were used for field efficacy test. The specific experimental method is as follows:

[0091] (1) Preparations

[0092] 20% thiazophosin water emulsion, commercially available; 70% imidacloprid water-dispersible granules, commercially available; thiazophosin-imidacloprid compound (wherein the mass ratio of thiazophosinate to imidacloprid is 1:3), prepared by tank mixing.

[0093] (2) Test objects and conditions

[0094] The control object is root-knot nematode incognita on tomato, and the fields where root-knot nematode incognita occurs heavily all the year round are...

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Abstract

The invention relates to a nematicidal composition for meloidogyne incognita and application thereof The composition is composed of fosthiazate and imidacloprid according to a mass ratio of 1: 3. Thecomposition is used for preparing nematicidal preparations for meloidogyne incognita (especially tomato meloidogyne incognita). Two effective components of fosthiazate and imidacloprid are combined, the action mechanisms of the fosthiazate and imidacloprid in prevention and treatment of meloidogyne incognita (especially tomato meloidogyne incognita) are different, cross resistance does not exist,the composition of fosthiazate and imidacloprid has an obvious synergistic effect, and the prevention and treatment effect on target pests is obviously better than the single agent of fosthiazate andimidacloprid, generation and development of the drug resistance of meloidogyne incognita are delayed, and the use amount of pesticide is reduced so that the cost is reduced, and the pollution to the environment is reduced.

Description

technical field [0001] The invention relates to a nematicidal composition for root-knot nematode incognita and its application, belonging to the technical field of pesticide application. Background technique [0002] As far as the inventor knows, root-knot nematode (Meloidogyne spp.) is a kind of plant parasitic nematode that infects the root system of plants. Root nodules hinder nutrient absorption, and necrosis occurs in the shoots. Common root-knot nematodes found and identified in agricultural production include Meloidogyne javanica, Meloidogyne arenaria, Meloidogyne incognita, and Meloidogyne hapla. Knot nematode is the most harmful type, with as many as 1,700 species of hosts, causing more than US$100 billion in losses to the world's agricultural production every year. Because most of its hosts are vascular crops, which cause harm to economic crops such as vegetables, with the adjustment of industrial structure, the planting area of ​​facility vegetables continues to...

Claims

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Application Information

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IPC IPC(8): A01N57/32A01N51/00A01P5/00
CPCA01N51/00A01N57/32
Inventor 魏利辉徐鹿周冬梅张金凤赵敏
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES