What is it about celery rotten heart
When calcium deficiency celery is deficient in calcium, the young tissue at the growing point is brownish to dark brown at first, and then black and dead. At the same time, the disease extends down to the stem base and roots, causing the surface of the stem to become brown and dry. The interior is hollow, brown and dry and slightly sour. At the same time, the roots of the plants turned yellow-brown to yellow-brown, and the amount of root coefficients decreased. When celery is debilitated due to lack of calcium, many farmers also pay attention to supplementing calcium fertilizer for celery, but they have not achieved significant results because calcium supplements are not supplemented with boron for celery. Many farmers believe that celery does not bloom and it is not fruitless, and there is no need to add boron for celery. Studies have shown that if celery is deficient in boron, even if it is supplemented with more calcium, it cannot be absorbed and utilized by celery. Therefore, when supplementing calcium fertilizer for celery, it must be supplemented with boron. Can be applied by foliar spray of 0.3% calcium nitrate solution mixed with 0.2% borax solution for prevention, at the same time, nitrogen fertilizer should be reduced, especially the use of ammonium nitrogen, appropriate increase in the amount of potassium fertilizer, in order to facilitate the absorption and utilization of calcium. â– Bacterial soft rot disease It mainly occurs on the base or stem of petiole, and the symptoms are water-soaked, light-brown spindle-shaped or irregular-shaped depression spots, followed by a wet rot and black odor. Farmers can use 12% of copper rosinate 500 times or 47% of Garnett 600 times to control. â– Sclerotinia sclerotiorum mainly invades the petiole base and rhizome near the ground, resulting in rot in the affected area, high hygroscopicity of white hyphae, and the formation of murine fecal black sclerotia. Farmers can use 40% of the sclerotium net 800 times or 50% of iprodione 1000 times spray control. Single Tunnel Greenhouse,Invernadero Greenhouse,Vegetables Fruit Greenhouse,Garden Film Greenhouse Qingzhou JuLong Agriculture Equipment Co.,Ltd , https://www.julonggrowtech.com