What to Do When Napa Cabbage Does Not Form a Head? Causes and Solutions

Napa cabbage is one of the most common vegetables in our daily lives. It is easy to grow, so everyone plants some. However, many growers often run into the problem of napa cabbage not forming a head, which affects both the quality and the yield of the cabbage. So what causes napa cabbage not to form a head? How should it be solved? Follow along with the editor and take a look.

I. Causes of Napa Cabbage Not Forming a Head

There are many causes of napa cabbage not forming a head, but the main ones are temperature and humidity. Increased rainfall can also trigger many diseases, and these diseases affect the growth of napa cabbage. Besides preventing it from forming a head, they may even cause the cabbage to rot. In addition, insufficient water supply or improper fertilization can also cause napa cabbage not to form a head, and pest damage is another possible cause. Once you know the causes of napa cabbage not forming a head, you need to take preventive measures.

II. Solutions

1. Scientific fertilization

Fertilization is extremely important for any crop. When growing napa cabbage, improper fertilization can lead to poor growth and failure to form a head. Many people like to use nitrogen fertilizer to promote rapid growth of the cabbage, but this is actually a mistake. Napa cabbage fertilization should be based mainly on phosphorus and potassium fertilizers, with only a small amount of nitrogen fertilizer added. Fertilizer can be applied 20 days after planting the cabbage, then once every half month, and after head formation, spray a foliar fertilizer once a week to ensure the head is firm.

2. Regulating humidity

Napa cabbage needs a large amount of water during its growing period, but you should not water blindly. Never water too much at one time and too little at another; watering must be balanced, and you also need to pay attention to weather changes and adjust watering accordingly. If the weather is relatively dry, water in the morning and evening; if it rains for several consecutive days, drain the water promptly.

3. Controlling temperature

Napa cabbage is mainly produced in winter, which shows that it has very strong cold resistance, which also means its heat tolerance is not very good. Therefore, when growing it, you need to put more effort into temperature management. For example, when growing it in a greenhouse, you can keep it at a constant temperature, which is beneficial to its growth.

4. Preventing and controlling pests and diseases

Pests and diseases are a serious problem for all crops. Once crops are hit by pests and diseases, they can suffer fairly serious consequences, and napa cabbage is no exception. When napa cabbage is attacked by pests, it will fail to form a head, so during the growing process you must pay attention to the reproduction of pests and deal with them promptly once found, so as not to miss the best time for control.

  The above is an introduction to the causes of napa cabbage not forming a head and the solutions. We hope it can help you. To learn more related knowledge, please stay tuned to us.