CATDOLL : CATDOLL: Why did my crab claw get sick?

1. Why did my crab claw get sick?

The reason why Christmas cactus leaves fall off is mostly due to watering too frequently, frost damage, lack of fertilizer, and pests and diseases. Watering must be moderate. Do not water too frequently. Do not water unless the surface of the potting soil is dry. Water thoroughly when you water. Especially in winter, it must be determined according to the dryness of the surface of the potting soil. Of course, it is only drought-resistant, not a drought-loving plant. The potting soil cannot be too dry, otherwise this problem will also occur. It is necessary to ensure sufficient room temperature and no cold wind. Christmas cactus does not require much fertilizer during the normal growth period, but after entering the bud-raising period, it is necessary to add some fertilizer in time to make the plant grow vigorously, the flower buds differentiate well, and the flower buds develop normally and full. It is necessary to strictly prevent the harm of red spiders and scale insects. When they occur, special killing agents can be sprayed for prevention and control, such as mites, mites, etc. to prevent red spiders; cypermethrin, cypermethrin, etc. to kill scale insects. In addition, humidity is also one aspect. Christmas cactus cannot be placed on the radiator or the air outlet of the air conditioner, otherwise the leaves will dehydrate faster, causing the leaves of the plant to turn yellow. There are spots on the body, one possibility is that there is too much water. Fungal infection. In management, attention should be paid to ventilation and a relatively dry micro-environment should be created. For chemical control, 800 times of thiophanate-methyl and 1000 times of chlorpyrifos can be used, and sprayed once every 7 to 10 days. There are also scale insects, which are very harmful to Christmas cactus. In mild cases, rust spots will appear on the rootstock and scion, affecting the appearance, and in severe cases, a large number of deaths can be caused. It can be prevented by adding 0.1% furadan to the soil when potting, or when the pest occurs, spray 500 to 800 times of omethoate and phoxim at intervals of 7 to 10 days, and control 2 to 3 times in a row (scraping off part of the insect body with a bamboo strip before spraying will have a better effect).

Adopt it

2. What medicine is good for treating crab scratches?

For claw grinding disease, just use strong acid iodine 1~2 times on the whole pool, and then use a strong oxidizing bottom modification once. Ring claw disease can only be prevented but not cured.

3. Why do some of the claws and abdomen of crabs raised in ponds turn yellow?

A sign of claw rot.

4. How to treat crab claw grinding

If crabs are not properly managed during the winter, they are prone to grinding claws and breaking limbs. To prevent grinding claws and breaking limbs, refer to the crab farming website and