The use of chemical pesticides directly affects the safety and health of tea, and the use of plant-based soil pesticides can ensure the safety of tea. The author has obtained the following information on the investigation of soil pesticides in the main tea producing areas in Guizhou. The relevant contents are now described below.
1, rosin mixture.
1.5 kg of rosin was ground into a powder. Use 1 kg of water to dissolve 1 kg of alkali, add water to 5 kg, divide the prepared alkaline water into two halves, and pour half into pot and rosin. Heat and slowly stir until the kettle boils quickly and add the other half of the alkali. The water is slowly stirred until the rosin is completely dissolved, cooled, and the filter residue is obtained as a rosin mixture.
How to use: Spray the body directly on sunny days. For the prevention and control of venomous moths, fleas, moths, tea nets, locusts, etc., 20 kg to 25 kg of water per kilogram of thick liquid. For moss lichens, add 15 kg to 20 kg of water per kg of raw liquid.
2, gray water soap.
Put 5kg of ash into the pot, pour 50kg of water, heat and stir for 1 hour to make it fully dissolved, filter residue to get grass grey water, add 100g of soap, mix and serve.
How to use: Using the original solution, spray the insect directly on sunny days. It can control poison moths, moths, locusts, apes, and thrips.
3, Tongziliang liquid.
Five kilograms of tung shells were crushed, 50 kg of water was added and boiled for more than 2 hours.
How to use: Use thick liquid direct spray insects on sunny days. It can control cockroaches, poison moths, creepers, thrips, aphids, etc.
4, ramie leaf liquid.
Five kilograms of nettle leaves were chopped and smashed, and 50 kg of leeks were added to the pot for 30 minutes. The residue was filtered.
How to use: Use the liquid directly to spray the insect body, sunny use is better. It can control horses, aphids, tea nets, etc.
5, tobacco leaching.
Put 5 kg of waste (straw, first class) in the pot, add 25 kg of water and cook for 30 minutes. Filter the residue and serve.
How to use: Use the liquid directly to spray the insect body and use it on sunny days. Can control locusts, mites, leafhoppers and so on.
6, Sophora root soap solution.
15 kilograms of the whole plant of Sophora flavescens were chopped and placed in a pot with 50 kg of water and boiled for 1 hour. After cooling and filtering, 100 g of soap was added to the liquid and dissolved.
How to use: Use the original liquid, spray directly on the body and use on sunny days. It can prevent poisonous moths, aphids, tea cockroaches, cockroaches, leafhoppers, etc.
7, bitter buckwheat leaf liquid.
Five kilograms of bitter buckwheat leaves were chopped and put into a pot and 25 kg of water was boiled for 1 hour. The residue was filtered and served.
How to use: Directly spray the insect body and use it on sunny days. According to the ratio of raw liquid:water=1:9, it can be used to prevent poisonous moths, mussels, cockroaches, thrips, leafhoppers, etc.
8, Rhododendron flower root fluid.
One kilogram of rhododendron root was chopped and placed in a pot, and 5 kg of water was added and boiled for 30 minutes.
Usage: Prepare by thick liquid:water=1:3, instruct the diseases caused by fungi.
9, five cloud liquid soap.
Five kilograms of five clouds (whole grass) were crushed, put in 50 kg of water and soaked for more than 24 hours, stirring, smashing, so that the full effect of drug ingredients dissolved, filtered to the residue, that is, the original solution; add 100 grams of soap, mix Even, that is, five cloud liquid soap.
How to use: Use the liquid directly to spray the insect body. It is better to use in sunny days. It can prevent poisonous moths, leafhoppers, aphids, thrips, tea nets, leafhoppers, etc.
10, pine needle lye:
It is a contact agent that can block the pores and corrode the skin.
Production Method: Put 5 kg of pine leaves, 500 g of alkali and 25 kg of water into the pot and cook for half an hour.
How to use: Directly spray the insect body and use it on sunny days. According to the liquid: water = 1:2 ratio. It can control poisonous moths, moths, creepers, whiteflies, grasshoppers, aphids, etc.
11, mulberry leaves liquid.
Five kilograms of mulberry leaves are crushed, and 25 kg of water is added to the pot for boiling and boiling for half an hour.
How to use: Directly spray the diseased leaves and use on sunny days. It is effective against diseases caused by fungi.
12, short hair cashmere grass.
Five kilograms of Cashmere (grass), 500 grams of alkali, and 25 kilograms of water are added to the pot and boiled for half an hour. The filtered residue is ready to serve.
Method of use and control of objects: direct spray disease leaves, use in sunny days. According to the liquid: water = 1:2 ratio.
13, pyrethrum grass solution.
Put 5 kg pyrethrum flower into 25 kg water, soak for 24 hours, boil for half an hour, filter to remove residue and serve.
How to use: Directly spray the insect body and use it on sunny days. Can control fleas, whiteflies, locusts and so on.
Glyoxylic acid is a 2-oxo monocarboxylic acid that is acetic acid bearing an oxo group at the alpha carbon atom.
Dimetridazole is a drug that combats protozoan infections. It is a nitroimidazole class drug. It used to be commonly added to poultry feed.
2-Methyl-5-nitroimidazole as pharmaceutical intermediates used for the compounding of Metronidazole, IndyMac yl, etc.
Glyoxylic Acid 50%,2 - methylimidazole,2-methyl-5-nitroimidazole,Dimetridazole
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