Common diseases and pests of ophiopogon and their control methods

Sclerotium rot

Symptoms

It often occurs in rainy season. When the disease first occurs, the leaf base is covered with white mycelium, causing the rhizomes to rot.

Prevention and treatment methods

Remove the infected soil and sprinkle with pentachloronitrobenzene powder or lime.

Pay attention to ventilation and light transmission, and ensure that the potting soil has good drainage. Severely diseased plants should be burned.

anthrax

Symptoms

It occurs all year round, and is more rampant during hot and rainy seasons. The lesions first extend from the leaf tip to the rhizome, initially being brown, and then gradually expand and increase in number, with many dry black spots appearing, leading to the death of the entire plant in severe cases.

Prevention and treatment methods

In addition to actively improving environmental conditions, during the disease period, you can first use 800-1500 times diluted 50% thiophanate methyl wettable powder for spraying once every 7-10 days; then supplement it with 1% equal-volume Bordeaux mixture once every half a month, and spray continuously for 3-5 times.

Scale insects

Symptoms

Scale insects, commonly known as "orchid lice," reproduce fastest in hot, humid conditions with poor air circulation.

Prevention and treatment methods

During the incubation period, 1% omethoate or 1500 times 50% malathion spray can be used. If there are not many pots, they can also be removed manually.

The growing environment of the spotted tongue orchid should be kept ventilated and cool, with sufficient sunlight, but avoid direct sunlight. The environment should be suitable. There are fewer pathogens. Arrange indoor conditions suitable for the growth of flowers according to their growth habits to reduce the trouble caused by diseases and pests.