Symptoms: when Malachite grass suffers from brown spot disease, there will be brown spots on the leaves, which will cause the plant to wither and die in serious cases.
Prevention and control: select a better soil, and pay attention to the fertilization and watering during its growth period. Under certain circumstances, timely clean up the diseased plants and leaves, burn the diseased plants and spray fungicides such as rust, Fenning, etc.
Symptoms: in the early stage of the disease, the stems of Malachite grass will appear gray rash like bulge, round or spindle shaped, showing black conidia disk. The growth of the whole plant was inhibited, which affected the ornamental.
Prevention and control: drainage can be carried out in time after rain to keep dry and prevent over wetting. In the early stage of the disease, we can use 800 fold solution of 25% Benazolin, cyclohexzinc emulsion, 500 fold solution of 40% chlorothalonil suspension, and 400 fold solution of 30% green Debao suspension. Spray once every 7 days, generally 2-3 times can be cured.
Symptoms: the red spider mainly sucks the stem juice of Malachite grass, causing damage to chlorophyll and yellowing of leaves, which will cause the leaves to fall off or even fall off when seriously injured.
Prevention and control: if only a few leaves are damaged, we can remove them directly. If the damage is serious, we need to spray 1500 times of 40% dimethoate emulsion to the plants for prevention and control, so as to eliminate the pests at one time.
