The weather is getting colder. Many green vegetable growing seasons have passed, but we can still eat fresh green vegetables. This is due to the return of our greenhouse technology to maturity. Since greenhouse cultivation is a closed environment relative to open cultivation, the prevention and treatment of diseases is particularly important. Next, Xiao Bian gave you some of the diseases that need to be prevented during the cultivation of greenhouse celery.
1. Celery heart rot
Heart rot is often caused by the application of nitrogenous fertilizer and excess potassium, and at the same time, the temperature in the greenhouse is too low and the air is dry, causing the absorption of boron to be blocked. At the early stage of disease, leaf margins are rotted. Along with the occurrence of heart rot, the plants will also show some symptoms of calcium deficiency, which will lead to the necrosis of the young tissue in the growing point of the plant.
Control methods: Apply more organic fertilizer, control the temperature in the greenhouse, and at the same time can not over-control the water.
2. Celery hollow
The appearance of hollow symptoms is mainly due to insufficient or excess fertilizer, and low temperature and dryness are also important reasons. If the application of gibberellin at this time will further increase the appearance of hollow celery phenomenon.
Control methods: Apply adequate basal fertilizer, timely irrigation, heat and cold, use less or disable gibberellin.
3. Celery strain
The fissures of the plants are mainly in the growth stage and some cultivation methods are adopted to inhibit growth, and in the later stage, they are promoted to grow, which leads to the rapid expansion of the plants. Symptoms: As the plant grows and develops, longitudinal cracking occurs at the base of the petiole of the lateral base of the stem.
Control methods: Note that the growth of the entire plant must be taken to promote the growth of the method, but can not take the inhibition method.
4. Leaf margin rot
This symptom has a certain relationship with heart rot, mainly due to the lack of calcium in the plant.
Control methods: Shizu base fertilizer
5. Celery crack
Plant stem fissures are mainly caused by the disturbance of the absorption of boron by the plants. This phenomenon mainly occurs on the outer leaves.
Control methods: Apply 0.1% borax aqueous solution for foliar top dressing or apply a small amount of borax in the soil.
Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
Two-Piece Baseplate,2 Piece Colostomy Bags Chassis,Ostomy Bags Chassis,Hypoallergenic Ostomy Chassis
Wenzhou Celecare Medical Instruments Co.,Ltd , https://www.wzcelecare.com