Q: The umbilical part of the gourd rots. There is a black circle around the flower. Then it's gone. What should I do?
A: The gourd navel rot is mainly a physiological disease caused by calcium deficiency. Because people only pay attention to the application of a large amount of N, P, and K fertilizers, and less use of trace elements in fertilizers, the occurrence of physiological diseases is becoming more and more common. In recent years, the occurrence of calcium deficiency disease in eggplant and cucurbitaceae vegetables has become more serious. Calcium deficiency can easily cause umbilical depression and perishable. In addition to increasing bio-organic fertilizers and traces of fertilizer, but also more than the top dressing, that is, foliar spray fertilizer containing a variety of elements.
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