Also known as ginger tuber rot disease, it mainly harms underground tubers.
The aboveground part of the diseased plant was withered, the underground tuber turned brown and rotted, and the clear liquid exuded from the affected part. The surface of the diseased tuber often grew yellow and white mycelium.
The pathogen of the disease is Fusarium of the Deuteromycotina, including Fusarium oxysporum f.sp. Zingiberi Trujillo and F. solani (Martius) Apple et Wollenweber.
Their mycelium and chlamydospores overwinter in the soil along with the diseased remains. Ginger with bacteria and manure with bacteria are important sources of infection in the second year. The conidia produced in the diseased part are spread by rainwater splashing and irrigation water to infect again.
The pathogen prefers wet conditions, especially in low-lying terrain, poor drainage, and heavy soil, which is conducive to blight disease. Continuous cropping or application of unmatured manure is prone to disease.
Both ginger soft rot and ginger blight are important fungal diseases that damage ginger tubers, and the symptoms are similar. The difference between these two diseases: the base of the stem of the first onset of Fusarium wilt will change color without becoming soft and rot, and it will develop a colored mildew layer after moisturizing.
When the soft rot disease first occurs, the base of the plant stem becomes soft and presents wet rot to soft rot. After moisturizing, it develops white mycelium, and some are like wet cotton.
