Pest and disease control of yellow crocus

1. Corruption

In fact, it is a bacterial infection. It first starts to occur after the seedlings emerge, and is usually more severe between February and March. When it occurs, the base of the leaf sheath is damaged first, and the color turns reddish-brown, and then the entire leaf begins to turn yellow. Then it will also harm the underground bulbs, and the fibrous roots will slowly turn from white to light brown or purple-black, and eventually fall off and die.

Prevention and control methods: First, we can soak the seeds in a certain amount of lime water before planting, and then wash them with clean water. If we find some sick plants during their growth process, we need to pull them out in time and carry out certain disinfection. In addition, it is best to spray some pesticides for prevention and control during the seedling stage.

2. Rot

This disease is also caused by bacterial infection. The damage mainly occurs on leaves and bulbs. This causes the leaves to turn yellow and fall off, and the bulbs to turn black and rot.

Prevention and control methods: Before sowing, some chemical reagents should be sprayed to do the most basic prevention and control work. Then other pesticides can be used to strengthen prevention and control in the later stage.

3. Viral diseases

Once infected with this disease, the leaves will begin to curl, the color will start to change from green to yellow, and some mottled flowers and spots will appear, causing the leaves to become deformed and grow poorly.

Prevention and control methods: First of all, you must carry out certain selection when sowing, and choose some disease-free bulbs for planting, so that the chance of disease will be smaller. Then in the later stage, some drug prevention and treatment can be carried out, which can greatly reduce the chance of virus transmission.

4. Robin root mite

It mainly harms the bulbs of the plants, seriously hindering their growth and development.

Prevention and control methods: Before planting it, we can soak the seeds with some medicines, and then plant them after soaking, which can achieve effective prevention and control effects.