Star pests and main pests and their prevention and treatment methods:
Whitefly:
Symptoms: The young leaves of the plant are chlorotic and yellow, and eventually the whole plant is wilted and dead.
Prevention:
(1) Use "insect nets" to block the invasion of external pests.
(2) Thoroughly kill the cultivation site before planting and remove weeds.
(3) 2.5% Kung Fu 2500-3000 times liquid or 20% anti-sweeping 2500 times liquid sprayed throughout the plant.
Gray mold:
Symptoms: Mostly caused by excessive rain or excessive watering in the rainy season. At the beginning of the stem, the leaf edge produces a water-like brown spot, which gradually expands to cause the branches and leaves to rot. When the air humidity is high, gray mold is often found in the diseased part.
Prevention:
(1) Keep the cultivation medium in a semi-dry state, do not over-water, and strengthen ventilation in the cultivation area.
(2) The cultivation medium is thoroughly disinfected.
(3) Before cultivation, the site is disinfected with chlorobacteria and the dosage is 200 g/mu. It needs to be continued after cultivation, once every 10 days.
(4) When the disease occurs, spray 50% of the 1500 times solution of the whole plant or spray the whole plant with 2000 times of the bacterium.
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