How to treat the diseases of Ophiopogon japonicus

Ophiopogon japonicus, also known as Ophiopogon japonicus, grass along steps, is a common herb in the shady and humid places of hillsides, streams and forests. It has a high prospect in landscaping, but during the planting period, there will be various diseases, so how to treat the diseases of Ophiopogon japonicus?

1. Root knot nematode disease

Ophiopogon japonicus suffers from root knot nematode disease, root knot of different sizes will appear in the root, and hairy roots will grow on it, and the end of the hairy root will be infected by nematodes again, forming small root knot, and so on.

When the root knot is cut, you can see the white, shiny globular substance, which is the female adult.

Prevention and cure method

When planting, we should choose the seedlings without disease, and pay attention to the roots of the seedlings without insect pests.

When planting, do not rotate with other plants such as tobacco, but with Gramineae crops.

For soil treatment, 5 grams of phosphorus granules were put into the soil before planting, mixed with the soil, and then planted.

2. Black spot

The occurrence of black spot in Ophiopogon japonicus will first make the leaves yellow and gradually spread to the base of the leaf surface, and then produce green, white, yellow and other water-soaked spots, affecting the growth and beauty of the leaves.

Once infected with black spot, the disease will continue to the second year, continue to affect plant growth, generally prone to disease in the rainy season.

Prevention and cure method

Clean and prune the withered plants and diseased leaves in winter, and then dispose of them.

During the onset of the disease, spray it with 1VR 200 times Bordeaux solution or 1000 times carbendazim solution, once every 10 days, about 3 times a time.

3. Mole disease

Both the adults and nymphs of this pest can bite the roots of the seedlings and affect the growth of the plants.

Prevention and cure method

5% phoxim granules 3 kg or 5% methyl isocarbophos granules can be sprinkled on the basin soil until the pest is dead, stop spraying, or use spices to lure the insects and then kill them.