Latest Methods for Preventing and Treating Celery Diseases in Winter Greenhouses

Thanks to the continuous spread of greenhouse cultivation techniques, we can eat most vegetables even in the cold winter, and celery is one of them. Because greenhouse planting keeps vegetables in a warm, enclosed state most of the time, it also provides a good growing environment for many pests and diseases. Today Qinong.com will introduce to you the relevant information about preventing and treating celery diseases in winter greenhouses.

Celery in winter greenhouses is relatively susceptible to main diseases such as celery heart rot, hollow stem, plant splitting, and stem cracking. Next, Qinong.com will introduce one by one the causes of these diseases and the related prevention and treatment methods.

1. Celery heart rot

Heart rot is often caused by applying too much nitrogen fertilizer and potassium fertilizer, while the temperature in the greenhouse is too low and the air is dry, causing the absorption of boron to be blocked. In the early stage of the disease, leaf margin rot occurs, and along with the occurrence of heart rot, the plant will also show some symptoms of calcium deficiency, which will lead to necrosis of the young tender tissues in the growing point of the plant.

Prevention and treatment methods: Apply more organic fertilizer, control the temperature in the greenhouse, and at the same time do not control water excessively.

2. Celery hollow stem

The appearance of hollow stem symptoms is mainly due to insufficient or excessive fertilizer, and low temperature and dryness are also important causes. If gibberellin is applied at this time, it will further aggravate the occurrence of celery hollow stem.

Prevention and treatment methods: Apply sufficient base fertilizer, irrigate in time, keep warm and prevent cold, and use little or no gibberellin.

3. Celery plant splitting

Plant splitting is mainly caused by adopting some cultivation methods that inhibit growth in the early growth stage and then promoting growth in the later stage, causing the plant to rapidly expand. Symptoms: As the plant grows and develops, longitudinal cracking appears at the base of the petioles of the outer leaves at the stem base.

Prevention and treatment methods: Pay attention to adopting methods that promote growth throughout the entire growth period of the plant, and do not adopt inhibiting methods.

4. Celery stem cracking

Stem cracking of the plant is mainly caused by interference with the plant's absorption of boron. This phenomenon mainly occurs on the outer leaves.

Prevention and treatment methods: Apply a 0.1% borax aqueous solution for foliar topdressing or apply a small amount of borax to the soil.

5. Celery leaf margin rot

This symptom has a certain relationship with heart rot and is mainly caused by calcium deficiency in the plant.

Prevention and treatment methods: Apply sufficient base fertilizer.

The above is the prevention and treatment of common celery diseases in winter compiled by Qinong.com. In addition, when the winter temperature drops below 0°C, celery is prone to freezing. If the petiole tissues suffer freeze damage, the damaged parts cannot recover even if the temperature rises again. Therefore, when growing celery in winter, relevant insulation measures must also be taken.