Method for preparing agent for preventing and treating red spider of Chinese chestnut using extract from vervain family flowers

A technology of vitex flower and extract, which is applied in the field of prevention and control of fruit tree diseases and insect pests, can solve the problems of environmental impact, less damage from natural enemies, and mammalian toxicity can not be ignored, and achieve the effect of simple method and abundant resources

A technology of vitex flower and extract, which is applied in the field of prevention and control of fruit tree diseases and insect pests, can solve the problems of environmental impact, less damage from natural enemies, and mammalian toxicity can not be ignored, and achieve the effect of simple method and abundant resources

CN101322503AInactive Publication Date: 2008-12-17吴桂军
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: get 1000 grams of dried vitex flowers, put it into a glass bottle, add a concentration of 1000 milliliters of ethanol with a cap of more than 75% to extract in the glass bottle, let it stand for 12 hours, then filter it with a filter cloth Filter and remove residue, make Vitex vitex extract, this extract is medicament, every bottle weighing 500 grams is sealed by medicament packing in container bottle, in chestnut red spider occurrence period, vitex vitex medicament is diluted 30 times by weight, and The diluted solution is smeared or sprayed on the chestnut tree respectively, and the mites can be killed in time.

Embodiment 2

[0010] Embodiment 2: Get 2000 grams of dried Vitex twigs, put it into a glass bottle, add 2000 milliliters of ethanol above 75% in the glass bottle to extract it, let it stand for 12 hours, then filter it with a filter cloth to remove the residue , to prepare Vitex flower medicament, put the medicament into a container bottle with a weight of 500 grams per bottle and seal it, and dilute the vitex flower medicament by 30 times by weight during the occurrence period of chestnut spider mite, and smear or spray the diluted solution on the chestnut tree respectively , can kill mites in time.

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Abstract

The invention relates to a method for prevention and control of diseases and insect pests in fruit trees, in particular to the method for preparing a medicament for prevention and control of spider mites on chestnut by using an extract from flower of vitex negundo. The method comprises the following steps: the flower of the vitex negundo is arranged in a container, ethanol with the concentration of more than 75 percent is added in the container for extraction, the still placement is carried out for 10 to 14 hours, and the mixture is then filtered to remove the residues, thereby preparing the medicament of the flower of the vitex negundo. The flower of the vitex negundo is widely distributed in the areas such as Hebei, Shanxi, Henan, Shanxi, Gansu, Sichuan and Yunnan provinces and is a wild plant, the resources are abundant, the direct extraction method by using the ethanol is simple and the extract is safe to human and livestock. As the medicament contains a great amount of volatile substances, the medicament has great potential as a plant acaricide.

Description

technical field [0001] The invention relates to a method for preventing and controlling fruit tree diseases and insect pests, in particular to a method for preparing a medicament for preventing and controlling chestnut spider mite by using Vitex flower extract. Background technique [0002] Chestnut red spider, also known as Acerola mite, Chestnut mite, belongs to Arachnida, Acaridae, Tetranychuidea, Tetranychidae. Distributed in my country's Beijing, Hebei, Shandong, Jiangsu, Anhui, Zhejiang, Jiangxi and other provinces, cities and many countries in the world. Hosts include tree species such as chestnut, chestnut, oak, spruce, fir, and oak. It is the main pest mite that damages the leaves of chestnut trees. Acerola mite sucks leaves with juveniles, nymphs and adults. Chestnut leaves are damaged with small pale spots, especially concentrated on both sides of the veins. In severe cases, the leaves are pale yellow, scorched and dead, the tree is weak, and the chestnut seeds...

Claims

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Application Information

Patent Timeline
17 Dec 2008
Publication
CN101322503A
IPC
A01N65/00; A01P7/02
Inventors
吴桂军; 李建飞