What causes hollow celery? Detailed explanation of prevention and control measures

In the process of celery cultivation, hollowing is a common physiological disorder. Celery is a solid-stemmed variety, but due to improper cultivation management, hollowing can occur. Hollow celery leads to a decline in quality, and in severe cases it cannot be used, directly affecting economic returns. So what causes hollow celery? How should it be prevented? Let's take a look together.

I. Causes of hollow celery

1. Excessive growth time, aging leaf stalks

When celery grows for too long, its leaf stalks lose active cells, and as pectin substances decrease, gaps form within the cell membranes, so the large parenchyma cells between the vascular tissues form hollows. Hollowing also gradually develops from the outer leaves to the inner leaves. This physiological aging phenomenon generally occurs when celery is cultivated on sandy soil.

2. Adverse environment

High temperatures, lack of water, and lack of fertilizer can all cause celery to grow slowly or stop growing, and the leaf stalks are also highly prone to hollowing under these conditions, especially when fertility is insufficient or fertilizer is depleted in the later stage. Cultivation in autumn and winter with too low a temperature can also cause freeze damage and result in hollowing; too high a temperature and excessively fast growth can also cause hollowing.

3. Improper management

During cultivation, if the amount of gibberellin used is too large, the number of sprays is too many, and fertilizer and water cannot keep up, hollowing can also occur.

II. Preventive measures

When planting, apply sufficient base fertilizer and spread it evenly. It is recommended to apply about 5000 kg of high-quality decomposed organic fertilizer per mu, and after transplanting and seedling recovery, promptly apply a seedling-promoting fertilizer. Apply 10 kg of urea or fermented human manure and urine per mu with irrigation water. In the early growth stage, mainly use quick-acting nitrogen fertilizer, with an appropriate amount of potassium fertilizer. After topdressing, water promptly, adopting the measures of frequent light irrigation and frequent fertilizer application. If boron deficiency is found, a 0.3%-0.5% borax solution can be sprayed on the leaves. During the vigorous growth period, keep the soil moist regularly, but do not let water accumulate. Keep soil moisture at about 60%-80%, and in summer pay attention to drainage and waterlogging prevention.

III. Control measures

⟦NL>Focus on strengthening cultivation management, do a good job in fertilizer and water management, and prevent plant aging. In hot seasons, avoid drought. When cultivating in greenhouses, the temperature should not be too high or too low. When it exceeds 25 degrees, ventilation must be carried out promptly, and in winter it should be kept above 5 degrees. When celery has already matured and the harvest is to be delayed, part of the outer leaves can be picked first, which is an effective measure to prevent aging and hollowing. It can also be harvested promptly and stored to supply the market later. When spraying gibberellin, strictly control the concentration, dosage, and frequency, and pay attention to combining it with watering and fertilization.

  The above is an introduction to the causes of hollow celery and prevention and control measures. We hope it can help you. If you want to learn more related knowledge, please follow us.