Many growers choose to store sweet potatoes in order to sell more or keep them for later. However, many growers have encountered such problems in response to the fact that the stored sweet potatoes are rotten. Obviously, if the sweet potato rots, it will reduce the farmers' income. Then the question comes, how can farmers' friends control the rot in the sweet potato storage process? Today we will share related issues and prevention measures.
There are four main reasons for the occurrence of decay during sweet potato storage:
1. Mechanical damage
In the process of sweet potato harvesting, wounds, bruises, bruises and other wounds are most susceptible to infection by pathogens. Sweet potatoes with wounds can rot in 4~7 days under high temperature, high humidity and poor ventilation. Sweet potatoes are most suitable for storage at a temperature of 10-15 °C, a humidity of 80% - 9%, and a minimum oxygen content of 5%. The sweet potato will germinate when the temperature is high. The temperature is low and the sweet potato is easy to freeze.
2. Sweet potato freezing damage
If the sweet potato is at a low temperature of 8 degrees celsius during storage, the metabolism will be destroyed. After the sweet potato is frozen, it will rot in the light of 10~15 days, and it will rot under heavy conditions. If the sweet potato harvest period is late or the sweet potato glutinous rice has poor heat preservation effect, the sweet potato rot will be aggravated.
3. Sweet potato wet damage
Sweet potato in the late harvest period, if there is too much rain in the field, or if the sweet potato is drenched by rain, the sweet potato will have too much water. Sweet potato physiology was destroyed. The rapid increase in temperature after sputum causes the respiration of sweet potatoes to strengthen and cause decay. Or if the water content in the yam is too large, it will cause the sweet potato to rot.
4. Sweet potato variety
Some fresh sweet potato varieties are not resistant to storage. If stored, it will cause the sweet potato to rot. Therefore, whether the growers want to store sweet potatoes, sweet potato varieties are very important.
After figuring out the main cause of sweet potato rot, the growers can effectively reduce the problem of sweet potato rot by taking targeted preventive measures.
Sweet potato storage
1. Constant temperature library storage
This is currently the most scientific and safest storage method. It is suitable for growers with large planting area and large storage. The constant temperature library can manually adjust the temperature and humidity in the library, maintain the temperature at 10~15 degrees, and the humidity is about 90%, which is the best environment for storing sweet potatoes.
2. Mantle preservation
This is the most common storage method in rural areas. The optimal temperature for sweet potato storage is around 15 degrees. If the temperature is too high, the sweet potato is easy to germinate, and if the temperature is too low, it is easy to cause freezing damage and reduce the quality. Therefore, the temperature of the rural mantle is just around 10 to 15 degrees, so it is very suitable for storing sweet potatoes. Farmers growers should dry for 3 to 5 days after the sweet potato is harvested. Then pack it in clams or cornskin. The same layer of sweet potato should be separated by a clam shell. It is better to bring some soil with conditions, and the code can be good. Or put a layer of fine sand on the bottom of the mantle, and layer the sweet potatoes in order. Be careful not to have too many layers, leaving room for ventilation.
3. Carton storage
For consumers, because of the small amount of sweet potatoes, it is recommended to use a carton or tote. First, dry the sweet potato and wrap it in paper, then put it in the box. It is no problem to store for half a year. Note that sweet potatoes do not have skin damage.
Goodway provides professional sweet potato starch making machine
, which is inexpensive. Welcome to consult!