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Compound insecticide for efficiently proventing and treating cnaphalocrocis medinalis and rice snout moth's larva

A technology of rice leaf roller and rice borer, which is applied in the field of low toxicity, multifunctional compound insecticide and high efficiency, and can solve the problems of poor control effect of rice leaf roller, inability to control quickly, and slow insecticidal speed, etc. , to achieve the effect of reducing the cost of prevention and treatment medicine and cost, reducing the amount of medicine, and short duration

Inactive Publication Date: 2005-11-30
JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As an insect growth regulator, impatabo mainly exerts stomach poisoning effect on pests and has a long lasting effect. However, due to the slow insecticidal speed, it cannot control the damage quickly.
On the other hand, triazophos is a neurotoxic quick-acting insecticide with penetrating insecticidal effect. It is currently the main agent for controlling the damage of rice stem borer and rice stem borer. The insecticidal activity of rice leaf rollers above the 2nd instar larvae is low, so a single agent of triazophos has poor control effect on rice leaf rollers of mixed ages in the field

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The results of synergistic bioassays showed: 0.1 g of pacifol + 30 g of triazophos (1:300), 0.25 g of pratabol + 20 g of triazophos (1:40), 0.5 g of pratabol + 15 g of triazophos (1∶30), 1.5 grams of Etazophos + 10 grams of Triazophos (1:6.7), 2.5 grams of Etabol + 5 grams of Triazophos (1:2), a total of 5 kinds of compounding agents, on rice The co-toxicity coefficients of leaf roller were 163, 188, 221, 162 and 131 respectively; the co-toxicity coefficients to C. for 190, 202, 216, 232 and 146. It shows that the two medicaments have significant synergistic insecticidal effects on the above three rice pests after they are compounded.

Embodiment 2

[0024] The results of the field test (Table 1) show that: based on the amount of pure drug used per mu (the same below), the compound agent (1:30) of 0.5 g of imatapo + 15 g of triazophos, 2 days after application, The leaf-protecting effect of controlling rice leaf rollers is 72-82%, and the insecticidal effect is 75-84%, which is very significantly (up to 1% significant level, the same below) higher than that of 1.5 grams of a single dose of taibao for mu. Leaf effect (26~33%) and insecticidal effect (33~39%), and significantly (up to 5% significant level, the same below) higher than the leaf protection (58~66%) of 15 grams of triazophos per mu And insecticidal effect (61 ~ 73%). 6 days after taking medicine, the leaf-preserving effect of the compound

[0025]

[0026] The above results show that, compared with triazophos, the compound agent significantly prolongs the duration of action; and compared with impatabo, it significantly enhances the quick-acting proper...

Embodiment 3

[0028] The results of the field test (Table 1) also showed that the compound agent of 1.5 grams of taibao + 10 grams of triazophos (1:6.7), 2 days after application, the leaf protection effect of controlling rice leaf rollers was 70-78%. %, the insecticidal effect is 73 to 81%, which is significantly higher than the effect of 0.5 to 1.5 grams of phazophos for mu, and also significantly higher than the corresponding effect of 15 grams of triazophos for mu. Six days after spraying, the compound agent has a leaf-preserving effect of 93-97% and an insecticidal effect of 95-98%, which are significantly higher than the effect of 15-25 grams of triazophos for mu. 15 days after application, the compound agent has a leaf-preserving effect of 92-98% and an insecticidal effect of 93-100% in the control of rice leaf rollers, which is still significantly higher than the corresponding effect of 15-25 grams of triazophos for mu. Effect: the control effect of stem borer and stem borer is 91-9...

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Abstract

The present invention relates to a multifunctional composite pesticide for high-effectively controlling rice leaf roller and rice borer. It is made up by utilizing two active components of chlorfluazuron and triazophos and adjuvant and solvent through a certain preparation process. By does of said pesticide for once per mu the effective content of chlorfluazuron in the composite pesticide is 0.1-5 g and the effective content of triazophos is 2-40g. Besides, said composite pesticide also can be used for controlling pale-headed striped borer and paddy borer.

Description

1. Technical field [0001] The invention belongs to the technical field of pest chemical control, and in particular relates to a high-efficiency, low-toxicity and multifunctional compound insecticide containing Chlorfluazuron and Triazophos, which is used for the efficient control of rice leaf roller, It can control or delay the insecticide resistance of the pests such as the stem borer, the three stem borers, and the large borer. 2. Technical background [0002] The rice leaf roller Cnaphalocrocis medinalis Guenee is a migratory rice pest, causing white leaves of rice. It is one of the main pests of rice due to its strong suddenness and wide range of damage. For a long time, the control of rice leaf roller has mainly relied on methamidophos, monosultap and other insecticides, among which methamidophos has a prominent control effect, but because methamidophos is a highly toxic pesticide, it has been widely used in my country in recent years. Its use has been banned in some p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N57/16
Inventor 方继朝郭慧芳王节萍刘宝生
Owner JIANGSU ACAD OF AGRI SCI
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