Sweet potato disease prevention during storage

The problem of disease prevention and control during the storage of sweet potatoes has been plaguing the majority of melon farmers. Due to poor management, fresh sweet potatoes are prone to lesions during storage, causing rotten pits. The author investigated the causes of rotten cellars and conducted research on prevention and control techniques.

First, timely harvest, fine collection fine digging: general cold dew early, late winter, before the next frost, is timely. Choose sunny day, exquisite digging, light release, pay attention to avoid vines to avoid trauma.

Second, select, dry, timely access to the pit. Diseases, insects, injuries, and water-immersed tubers cannot enter the pit. After the skin moisture and wound slurry dry, enter the pit.

Third, the screening site, the old cellar must scrape the cellar to see the new soil, after the use of lime and water into a slurry, surface disinfection. The new cellar should be selected for high altitude, sheltered from the sun, hard and impermeable to water. The number of storage pits can only be 2/3 of the storage pits, leaving 1/3 of the space for gas exchange.

Fourth, the chemical control: According to the practice of some melon farmers, diluted with 50% compound carbendazim to 500 times a lot of spray, until the heap under the liquid seepage.

Fifth, to strengthen the management of the pits: 10-15 days into the initial period to open the door to open the door, lose moisture, ventilation, when the weather is not good, cellar doors closed, until the temperature in the pit is stable at 10 °C? The cellar can be sealed at 14°C and freeze-proof after freezing. Take high-temperature open, low temperature closed method checks to keep the temperature in the pit, maintained at about 12 °C.

Sixth, in the early spring of the second year, we must use a 500-fold carbendazim solution. In short, to prevent fresh sweet potato rotten cellar should be harvested properly, improve the quality and storage period of the entrance cellar, strengthen scientific management as the center of the comprehensive prevention and treatment measures, after such treatment of sweet potato preservation time of up to 8 months or more, intact The rate reached 96%.

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