Common diseases of Psoralea corylifolia

1. Leaf spot

Symptoms: Some small black spots will appear on the leaves, which will gradually expand and cause problems for the entire leaf, which will fall off later.

Solution: Pay attention to protection at ordinary times to prevent the occurrence of diseases. After the disease occurs, remove the diseased leaves in time and spray pesticides for thorough treatment. You can spray carbendazim, maneb, thiophanate, metalaxyl mancozeb, etc., which can have a certain effect.

2. Leaf blight

Symptoms: This disease is more likely to occur in an environment with high temperature, high humidity and poor ventilation. Small yellow spots will form on the leaves at first, and then turn grayish white, as if the leaves are drying up.

Solution: Do a good job of prevention, apply fertilizers reasonably to enhance resistance, and spray mancozeb and other agents after the disease occurs.

3. Root rot

Symptoms: This disease can cause root rot, affect the absorption function, and eventually lead to the death of the entire plant.

Solution: Strengthen field management and choose varieties with good disease resistance to increase disease resistance. Disinfect the soil after the disease occurs. You can use carbendazim diluted with water to irrigate the roots. It is also necessary to eliminate underground insects and nematodes to reduce the spread of the disease.