What to do about mulberry ginkgo disease?

Mulberry ginkgo disease is commonly known as Sclerotinia sclerotiorum disease, which is the main disease of mulberry fruit. The pathogen is Sclerotinia sclerotiorum, and the primary infection sources of Sclerotinia sclerotiorum are soil mixed with sclerotia, infected branches and leaves and compost. Under the suitable conditions of temperature and humidity, the sclerotia germinated and grew into the ascospores, which spread with the airflow and infected the new shoots and buds of female flowers, green fruits and early mulberry. The spores invade the female flowers and produce a large number of hyphae, the flesh is swollen and milky white, and the stench of decay can be smelled after twisting.

What to do about mulberry ginkgo disease?

The main results are as follows: (1) Disease-resistant varieties are selected for fresh consumption, and large 10 varieties can be planted in a small amount. When used as processing fruit juice, the disease-resistant variety 46C019 and resistant variety Sulu 72 can be selected. Pay attention to 46C019 products; species should not be mixed with big 10 varieties.

(2) choose a suitable place to build a mulberry orchard for professional processing, and choose the land with convenient drainage and irrigation, fertile soil, high terrain and easy mechanical farming to build the orchard. It is required that mulberry trees and sericulture mulberry trees cannot be planted within 10 kilometers around the garden.

(3) reasonable close planting, scientific fertilization, it is suitable for big 10 varieties to plant less than 300trees per mu and develop middle trunk tree type: 46C019 variety planted 111plants per mu with row spacing of 3m and plant spacing of 2m, forming medium shrub type; Sulu 72 cultivar planted 300plants per mu with row spacing of 3m, plant spacing of 0.74m, and developed 2.5m high and multiple trunk tree types, which is beneficial to ventilation and light transmission and mechanical tillage. Fertilization principle: re-apply organic fertilizer after fruit harvest, with rotten chicken manure. Bean cake is the best: after winter to before germination, mainly with special compound fertilizer, 0.5 kg urea per plant as the standard, an appropriate amount of nitrogen fertilizer.

(4) in the early stage of mulberry orchard establishment, a small amount of low dry crops can be intercropped except rape and beans, but no crops can be intercropped in the later stage. After the fruit harvest, combined with fertilization, the soil is turned deeply mechanically or artificially, and once again in winter or spring, no dead corner is left. Early detection of ginkgo disease, the use of extraction method has a definite effect. When there are many diseased fruits, it is better to use deep ploughing thoroughly, especially in spring, which can destroy the surface sclerotia vesicle disk, prevent spores from flying and play a role in aseptic and disease prevention.

(5) before and after flowering and green fruit stage, 40% sclerotia net wettable powder 800-1200 times, or 70% methyl thiophanate powder 1000 times, or 50% carbendazim wettable powder 500 times were sprayed on mulberry branches, dried leaves, fruit and surface, every 6 days, a total of 2 times 3 times; when sick, once every 4 days, until a small amount of mulberry fruits changed from green to red.