Lupine Diseases and Prevention Methods

Powdery mildew on lupine

symptom

In the early stage of the disease, many small white spots will appear on the plant. When the temperature and humidity are high, the spots will gradually expand and even spread to the leaves of the entire plant. When the disease is serious, a lot of white hyphae will appear on the leaves, which will gradually turn into black or brown colonies. The leaves of the affected plants are noticeably thickened and the flowers are deformed.

Prevention and treatment methods

During maintenance, timely pruning should be carried out to cut off dense and yellow branches to enhance light transmittance; fertilization should be carried out reasonably to promote plant growth and enhance disease resistance; the indoor temperature should not be too low in winter.

When the disease occurs, remove the diseased leaves in time and check frequently to see if it has spread to other plants.

In the early stage of the disease, spray the medicine in time and use it according to the instructions.

Lupine rust

symptom

When the disease occurs, there will be a lot of rusty brown powdery substances on the underside of the leaves, which will gradually spread upwards, and brown spores arranged in lines will appear on the leaves. The leaves will then gradually wilt and turn yellow. If not treated in time, the entire plant will gradually wilt or even die.

Prevention and treatment methods

Take preventive measures and spray fungicides once a month, especially on the back of the leaves.

When the disease occurs, remove the affected leaves and spray fungicides in time, once every 5 to 7 days, for 3 to 5 times in a row.

Lupine basal rot

symptom

The pathogen Hu Zhengyao invades the rhizomes of seedlings, causing them to turn black and rot. When the environment is too humid, white mold will appear on the stems. After the plant is infected, the roots and stems will rot and become soft within a few days. After a few days, the leaves will wilt, the entire plant will fall over, and the plant will die.

Prevention and treatment methods

Once the plant becomes sick, there is no way to treat it, so preventive medication is required.

Disinfect the seeds and soil before planting, pay attention to ventilation and light transmission during daily maintenance, and irrigate the roots with disinfectant every month.

When the disease occurs, remove the plants in time and irrigate the roots with fungicides to avoid infecting other plants.