What are the new methods to prevent and cure ginger plague?

Ginger blast is easy to occur in a large area in high temperature and rainy season, which is the most feared disease in ginger planting. Once ginger plague occurs, if it is not treated in time, it will cause serious economic losses, so what are the new methods to control ginger plague at present?

Symptoms of ginger plague

Ginger blast is caused by bacterial infection of Pseudomonas solanacearum, which invades the root, underground and aboveground stems. The underground succulent stem was waterlogged and yellowish brown at the beginning. After losing its luster, the internal tissue gradually softened and rotted, leaving only the outer skin.

Squeeze the part of the disease can flow out dirty white turbid juice, give off a bad smell; the injured root is also yellowish brown, and eventually all rot. The aboveground stem was dark purple, the internal tissue turned brown and rotted, and the residual fiber. The leaves were withered, the leaves were yellowish, the edges were curled, and finally the whole plant withered.

II. Control methods of ginger plague

In view of ginger plague, prevention should be given priority to, and prevention should be combined.

1. Prevention of ginger plague

(1) disinfection of ginger: before storage and budding out of the cellar. The method is to put the ginger seeds side by side on the ground, dry the surface moisture, spray the ginger body surface with 300 times liquid of ginger distemper, cover the ginger body with sacks for 3-6 hours before storage and budding.

(2) when uncovering the film, ginger disinfectant 50-100ml + garlic oil 15ml with water 15kg was irrigated to the root, about 200ml per plant, with an interval of 5ml for 7 days, and then another acupoint irrigation was performed.

(3) before and after soil cultivation: add 50-100ml of Jiang Xianjing + 15ml of garlic oil to 15kg of water, 400ml 600ml of each plant, with an interval of 5ml for 7 days, and then give another hole irrigation.

(4) crop rotation: crop rotation is an important way to cut off soil bacteria, especially for affected plots, ginger can be replanted at an interval of more than 3 years. It is best to use the new stubble or the previous stubble as the land for food crops, the previous stubble in the mountain village is suitable for sweet potato and cassava land, and the Solanaceae crops (such as tomatoes and chili peppers) have been planted, especially the land with bacterial wilt is not suitable to grow ginger.

(5) Fertilizer and water management: ensure that ginger blast fungus is not brought in the process of topdressing and watering during the growing period. Fertilizer treatment with fungicides or application of bean cakes and other ginger free fertilizers.

2. Control of ginger plague.

The agents with better control effect on ginger plague are Jiang Xianning, Root rot Ling, Quick tonifying, Copper Noble, Keshikang and so on. Once sporadic diseased plants are found, the spread of ginger plague can be effectively controlled by timely application of pesticides in the whole field and alternate use of germicidal solution to irrigate roots once every 7 days and continuously for 3 times.

Warm hint: the epidemic period of ginger plague is long, it usually starts in June, the peak period is from July to August, and weakens gradually after September. The onset of the disease sooner or later, the severity of the disease is related to the temperature and rainfall of the year. The suitable temperature for the development of bacteria is 26-31 ℃. The higher the temperature, the faster the disease spreads, especially in the high temperature and rainy season, the bacteria multiply and spread with the water, which can cause a large number of plant disease in a short time. Therefore, if you encounter high temperature and heavy rain in the onset season, the disease will be serious; if the temperature is lower and the rainfall is less, the disease will often be lighter.