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Application of nativo to control over filial generations of brown planthopper

A technology for stabilizing the enemy and the brown planthopper, applied in the field of biological control, can solve the problems such as the decline of the control effect

Inactive Publication Date: 2015-08-12
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large and frequent use of chemical insecticides, the brown planthopper has developed resistance to them, resulting in a significant decline in the control effect

Method used

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  • Application of nativo to control over filial generations of brown planthopper
  • Application of nativo to control over filial generations of brown planthopper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: (preparation of Nadiwan water-dispersible granules)

[0011] Nadiba water-dispersible granules are produced by Bayer, and Nadiba water-dispersible granules are dissolved in tap water to make a final concentration of 0.3g / L Nadiba preparations.

Embodiment 2

[0012] Embodiment 2: (Application of Nadivin in the control of brown planthopper)

[0013] Follow these steps:

[0014] (1) For TN1 rice plants at the tillering and jointing stage, remove part of the roots and base leaf sheaths, wash them, and dry them naturally;

[0015] (2) Use clean water as a control, 0.04g / L imidacloprid liquid treatment as a positive control, spraying final concentration of 0.3g / L Nadiba, requires uniform distribution of liquid droplets, high coverage, appropriate amount of liquid, It is advisable to wet the surface of the target object without loss, and let it dry naturally;

[0016] (3) Put the main stems of rice seedlings treated in step (2) into large test tubes filled with 20ml of rice culture solution in advance, one rice seedling in each test tube, and put them into each test tube at the same developmental stage after 12 hours. One first-instar nymph of N. lugens planthopper was sealed with two layers of gauze, and each treatment was repeated 15...

Embodiment 3

[0019] Embodiment 3: (the control effect of Nadimen on nymphs and adults of brown planthopper)

[0020] Follow these steps:

[0021] (1) For TN1 rice plants at the tillering and jointing stage, remove part of the roots and base leaf sheaths, wash them, and dry them naturally;

[0022] (2) With clear water as the control, the final concentration of spraying is 0.3g / L Nadiben. It is required that the liquid droplets are evenly distributed, the coverage rate is high, and the amount of liquid is appropriate. It is advisable to wet the surface of the target without loss, naturally dry;

[0023] (3) Put the main stems of rice seedlings treated in step (2) into a large test tube filled with 20ml of rice culture solution in advance, and insert 3 rice seedlings into each tube, and insert the 3rd instar brown planthopper nymphs (or newly emerged brachypterous female adults) ) 30 heads, with the treatment of rice seedlings after spraying clear water as a negative control, and the treat...

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Abstract

The invention relates to the technical field of biological control, in particular to application of nativo to control over filial generations of brown planthopper. Native water dispersible granule (with 75 % mass percent of active ingredients including 25 % mass percent of trifloxystrobin and 50% mass percent of tebuconazole) is utilized by the invention for control over filial generations of brown planthopper.The most salient feature of the invention is described in that nativo, as bactericide, helps to prevent of inhibit yeast-like endosymbiote from entering ovarian tissues from hemolymph of female adults of brown planthopper such that a genital system of brown planthopper is affected and the egg laying amount is reduced; and the hatching rate is greatly decreased because produced eggs lack symbiotic bacteria so that generation of the filial generations of brown planthopper is effectively controlled.

Description

Technical field [0001] The present invention relates to the technical field of biological control, and in particular to the application of nadifen in preventing and controlling the progeny of brown planthopper. Background technique [0002] Brown planthopper is an important rice pest in Asia and a major pest in the Yangtze River Basin, South China and Southwest rice regions in my country, causing great harm to my country's rice production. Existing control methods mainly control brown planthoppers by promoting insect-resistant rice varieties or spraying insecticides. Insect-resistant rice varieties have a certain control effect on brown planthopper populations in the short term. However, brown planthoppers are highly adaptable to insect-resistant rice varieties. Generally, they can adapt to the variety resistance after three generations of breeding. Therefore, pesticides are needed for control. Brown planthopper. However, due to the large and frequent use of chemical pesti...

Claims

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Application Information

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IPC IPC(8): A01G13/00A01N43/653A01P3/00
CPCA01G13/00A01N43/653
Inventor 许益鹏俞晓平申屠旭萍
Owner CHINA JILIANG UNIV
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