After farmers who grow sweet potatoes manage the fields, don't forget that there is still an important prevention work to do. When sweet potatoes are harvested each year, there is a case of sweet potato cracks. Many farmers are wondering how to plant cracked sweet potatoes when they are planted well. The harvest is reduced and the mood is ruined. Here are the reasons for the introduction of sweet potato cracked skin and prevention measures for everyone to learn and exchange!
First, the reason for the cracked skin of sweet potato
Empty blistering: The disease usually occurs in the case of high temperature and low humidity. It will cause unevenness of the surface of the potato block, which will cause the rupture of the potato skin and cause the rupture of the potato skin and internal growth.
Nematode disease: This disease usually occurs in loose soil, sandy soil with more organic matter or when there is more rain after drought.
Second, how to prevent and cure
The seed potato is immersed in 50-54 degrees warm water for 10 minutes for disinfection, and the potato seedling is soaked for 30 minutes with 50% phoxim 300 times before cultivation.
It is also very important to change the rotation. The effect of using the rot in the ward is very good. It can be rotated for one year. If it is a crop such as corn or sesame, it will take 2-3 years. When cultivating, try to use resistant varieties so that it can prevent red potato cracks more effectively.
Third, the sweet potato harvest is good
Sweet potato has the highest starch content from late September to early October. Although the yield increases from mid-October to late October, the dry matter rate will decrease. Therefore, the normal harvest period should be from early October to mid-October. The temperature is higher, so this time is more suitable for farmers to dry the starch processing season.
After reading it, do you know the cause of the cracked red potato and how to prevent it? If you feel useful, share the article with your friends!
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