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Egg-laying preventer and preparing method thereof for diamondback moth

A kind of inhibitor, the technology of diamondback moth, applied in the field of diamondback moth oviposition inhibitor and its preparation, to achieve the effect of reducing the number of eggs

Active Publication Date: 2008-07-23
广州瑞丰生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is no domestic report on the preparation of lantana extracts for the control of diamondback moth.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Dry the lantana leaves at 50-70°C to constant weight, crush them into dry powder, soak the dry lantana powder with methanol at room temperature according to the conventional method and dosage, and filter to obtain the methanol extract; decompose the methanol extract with activated carbon Depigmentation to golden yellow, filtering, removing methanol to prepare a methanol extract of lantana; soaking the methanol extract of lantana with chloroform, filtering, removing chloroform to prepare a chloroform extract of lantana; using an appropriate amount of methanol in a water bath Completely dissolve the chloroform extract at 60-70°C, and let it stand below 0°C for 24 hours. After the crystals are precipitated, filter the crystals and dry them naturally to obtain the yellow powdered total lithenene. The methods used are all conventional methods in the art.

Embodiment 2

[0021] Take 0.2g of lantana methanol extract, dissolve it with 2ml of ethanol in a water bath at 60-70°C, add 400ml of water and 2ml of Tween 20 into the methanol extract solution, and mix well to obtain preparation 1.

[0022] Take 0.2g of the chloroform extract of the methanol extract of lantana, dissolve it with 2.5ml of ethanol in a water bath at 60-70°C, add 300ml of water and 0.5ml of Tween 20 to the chloroform extract solution, and mix well to obtain Preparation 2 .

[0023] Take 0.2g of total petrene, a component of the chloroform extract, dissolve it in a water bath at 60-70°C with 2ml of ethanol-acetone mixture with a volume ratio of 2:1, add 400ml of water and 2ml of Tween 20, mixed well to obtain preparation 3.

Embodiment 3

[0025] Take 0.2g of lantana methanol extract, dissolve it with 3ml of ethanol in a water bath at 70°C, add 100ml of water and 0.3ml of Tween 20 to the methanol extract solution, and mix well to obtain preparation 4. Take 0.2g of chloroform extract of lantana methanol extract, dissolve it with 3ml of ethanol in a water bath at 70°C, add 100ml of water and 0.3ml of Tween 20 to the chloroform extract solution, and mix well to obtain preparation 5. Take 0.2 g of total petrene, a component of the chloroform extract, and dissolve it with 3 ml of ethanol-acetone mixture with a volume ratio of 2:1 in a water bath at 70 ° C. Temperature 20, mix uniformly, obtain preparation 6. Determination of the effects of preparations 4, 5 and 6 on egg laying of diamondback moth by cage method:

[0026] Plant japonica seedlings with 5 true leaves in a plastic cup, the diameter of the bottom of the plastic cup is 4cm, the diameter of the cup mouth is 6.5cm, and the height is 8cm. Spray preparations ...

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PUM

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Abstract

The invention discloses a diamondback moth oviposition inhibitor, characterized in that the inhibitor comprises a common lantana extractive solution, water and a surfactant. The volume ratio of the common lantana extractive solution, the water and the surfactant is 3:100-400:0.3-2. The invention can be directly sprayed on the surface of a cruciferous vegetable plant and can reduce the ovum attaching amount of the adult diamondback moth on the cruciferous vegetable plant as well as have significant spawning inhibition effect to the diamondback moth so as to reduce the population quantity of the moth on the cruciferous vegetable plant, thus having the function of protecting the vegetable. Meanwhile, the invention takes full advantage of the common lantana, a 'harmful herb' and provides a feasible way for 'eliminating harm with harmful herb and changing the harmful herb into useful substance' for the common lantana.

Description

technical field [0001] The invention relates to a botanical plant protection agent, in particular to a diamondback moth egg-laying inhibitor and a preparation method thereof. Background technique [0002] Diamondback moth (Plutella xylostella) is one of the main pests in vegetable production in southern my country. With the extensive use of chemical pesticides, the resistance of the insects has increased significantly, and the damage has become more and more serious. This is inconsistent with the principle of sustainable control of diamondback moth. Using the relationship between plant secondary matter and insects to establish a pest control system can achieve sustainable control of pests (Pang Xiongfei, World Science and Technology Research and Development, Vol.21, NO.10.pp24-28, 1999; Pickett J A et al., Agriculture Ecosystems and Environment 64:149-156, 1997). Oviposition is an important link in the development of insect populations. Reducing the amount of eggs deposit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/00A01P7/00
Inventor 张茂新董易之凌冰梁广文宋艳霞
Owner 广州瑞丰生物科技有限公司
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