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Application of psoralen as agricultural disinfectant or pesticide

A technology of psoralen and insecticide, applied in the agricultural field, can solve the problem of no psoralen fungicide or insecticide, and achieve the effects of favorable environmental protection, broad antibacterial spectrum and remarkable effect

Inactive Publication Date: 2011-05-25
INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no relevant literature or report on the application of psoralen as a fungicide or insecticide in agriculture so far.

Method used

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  • Application of psoralen as agricultural disinfectant or pesticide
  • Application of psoralen as agricultural disinfectant or pesticide
  • Application of psoralen as agricultural disinfectant or pesticide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1, the prevention and treatment of psoralen to agricultural fungus disease

[0014] The tested strains Fusarium graminearum (Fusarium.graminearm) were isolated from wheat head blight; F.oxysporum (F.oxysporum) were isolated from cucumber wilt diseased plants; solani) was isolated from rice sheath blight leaves; Rhizoctonia solani was isolated from wheat sheath blight leaves; Sclerotioia selerotiorum was isolated from Sclerotinia sclerotiorum strains. The test drug psoralen (purchased from China National Institute for the Control of Pharmaceutical and Biological Products) was dissolved in acetone to make a 1000 μg / mL stock solution, and stored at 4°C for later use. PDA medium: cut 200g of peeled potatoes into pieces, boil for 10min, take the juice, add 20g of agar, heat until melted, then add 20g of glucose, and dilute to 1000mL with water.

[0015] Adopt the mycelia growth rate determination method to the inhibitory measurement of fungal mycelial growth, get...

Embodiment 2

[0019] Example 2 Psoralen is used as an active ingredient in the prevention and control of agricultural pests

[0020] The source of the tested insects was the 3rd to 6th instar larvae collected from the field population, raised indoors with artificial feed until pupation and laying eggs, and the 2nd to 3rd instar larvae with basically the same size as the F1 and F2 generations in the room were selected for toxicity testing (among them, vegetable caterpillars were collected from the field). Accurately weigh psoralen (purchased from China Institute for the Control of Pharmaceutical and Biological Products), dissolve it in acetone, and make a concentration of 2.000mg / ml mother solution for testing, then dilute it into 6 pieces with 1% TritonX-100 water emulsion. Different concentrations were used as the test liquid for standby use. Fresh and clean cabbage leaves (wherein, armyworms use wheat leaves and tea geometrids as fresh tea leaves) are made into leaf discs with a diameter...

Embodiment 3

[0025] Psoralen, lignin, diatomaceous earth and other conventional auxiliary materials were weighed to prepare a wettable powder with an active ingredient concentration of 2% according to a conventional process.

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Abstract

The invention discloses application of psoralen as an agricultural disinfectant or pesticide. The psoralen serving as the pesticide is used for preventing and controlling lepidopterous and homopterous insects, and the psoralen serving as the disinfectant is used for preventing and controlling agricultural fungus diseases and particularly has obvious preventing and controlling effects on sclerotinia rot of colza, cucumber fusarium wilt, rice sheath blight, wheat scab and wheat sharp eyespot. The psoralen serving as the agricultural disinfectant and pesticide is characterized by good effect, broad spectrum, low toxicity, no residue, environmental friendliness and no public hazard, and is particularly favorable for environmental protection.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and specifically relates to the use of psoralen as an active ingredient to prepare agricultural insecticides or fungicides. Background technique [0002] Agricultural pests occur in a large area in many areas of our country, and the frequency is on the rise, and the damage is aggravated. At present, chemical pesticide control is still the main control measure. Due to the long-term use of chemical pesticides, the pests have developed varying degrees of resistance to various chemical insecticides such as organochlorines, organophosphorus, carbamates, and pyrethroids, and the control effect has declined significantly, forcing farmers to increase The dosage is to improve the control effect, but it reduces the safety of agricultural products. [0003] In addition, in agricultural production, pathogens that harm crops include fungi, bacteria, viruses, etc. Among them, fungi have the greatest impa...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01P7/04A01P3/00A01N57/12A01N53/08
Inventor 宋萍萍吕晔王年鹤
Owner INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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