Causes:
Yellowing disease, also known as chlorosis, is a physiological disease that is mainly caused by plants lacking iron.
Symptoms: After the leaves are damaged, they show milky white spots or all become yellow-white. In the early stage of disease, the leaf was chlorotic and yellow, and the veins remained green, forming reticulate veins. As the disease progressed, all yellowing fell off and affected growth. In severe cases, the leaves appeared brown and even the whole plant died.
Prevention:
1. Drain the black water: Mix the proportion of half a catty black wolfberry (ferrous sulphate) plus 100 pounds of water. After 5 to 7 days of sun exposure, water the water. Before the application, control the watering first. When the leaves of plants wrinkle. At that time, pour the black water again, dry it thoroughly, dry it, then pour it again, without interruption, until the new leaf grows dark green. During the pouring of black water, no water will be poured, but the leaves should be sprayed with water 1 to 2 times a day to maintain the air humidity. In this way, the lightly diseased plants become dark green in 1 to 2 months, and the heavy diseased plants become dark green in 3 to 4 months.
2. Watering hoe and fertilizer: Black wolfberry, feces (usually using pig manure), cake fat (sesame cake is good) and water four materials in the ratio of 1:3:5:100 in the cylinder, set the daylight Exposure (do not stir during exposure), fermented into a black liquid after 20-30 days of maturity, and take 5 to 7 times of the supernatant to use. Every time the clear liquid is taken out, it should be replenished with the same amount of fresh water. After repeated use until the “Feng Fei Shui” fades, it will be re-dosed.
3. Spray black water: In the water tank, add black wolfberry in a concentration of 0.1 to 0.3%. After melting, pour into the basin with each watering. Or spray directly on the foliage. It should be noted that it must be used frequently to be effective.
4. Spray vinegar: Spray vinegar at a ratio of 1:250 to 300, spray once every 10 days, and spray 3 to 4 times.

Other Chemicals

Carboxyl Methyl Cellulose,Increase Viscosity,Preventing Mud Loss

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