There are many varieties of sweet potato, so how do you choose a high-quality variety?

Sweet potatoes have always been deeply loved by everyone, especially in winter when the roasted sweet potatoes on the street look so tempting and taste even better. However, when growing sweet potatoes, you still need to choose the right variety, though I am not sure what type of sweet potato variety the questioner is asking about, so here Kexue Xingnong will introduce them separately.

At present, there are many common types of sweet potato on the market. Usually, they can be divided by color into four categories: purple-fleshed sweet potato, red-fleshed sweet potato, white-fleshed sweet potato, and yellow-fleshed sweet potato.

According to use type, they can also be divided into: edible sweet potato, high-starch sweet potato, preserved-fruit sweet potato, feed sweet potato, and other types. First, let us look at edible sweet potatoes. Among edible sweet potatoes, the varieties with relatively good market response at present include: Yanshu 25, Shangshu 19, Xushu 18, Yushu 13, Pushu 23, Yan Zishu No. 1, and others, all of which are good sweet potato varieties.

In particular, Yanshu 25 has been relatively well recognized by the market in recent years. It has a sweet, fragrant taste and is soft and glutinous, making it very suitable for roasted sweet potatoes. However, the price is slightly higher, and the sweet potato has a higher moisture content and does not store well. Xushu 18, on the other hand, is a veteran among sweet potato varieties and is grown in many places.

Next, let us also talk about sweet potato varieties with relatively high starch content that are specially used for starch production. Most of the sweet potato starch and sweet potato vermicelli we eat are extracted from these potato varieties. At present, varieties with relatively good market response include Sushu No. 11, Yushu No. 7, Shangshu No. 9, Yusu No. 8, and others. Their starch content is all very high, and their performance in terms of yield is also quite good.

The above two types should be considered the more commonly used types of sweet potato. In addition to these, there are also feed sweet potatoes, which generally require a must-high yield, as well as medicinal sweet potatoes, which are mainly used to extract the medicinal components in sweet potatoes to treat diseases.

Here, let us also talk about how to choose high-quality sweet potato varieties.

First, you must buy from regular sellers, and buy sweet potato varieties that have already been approved, because such sweet potato varieties are at least guaranteed in terms of quality. Do not buy sweet potato varieties with exaggerated promotion, such as words like "potato king"; it is best not to buy this kind of sweet potato variety.

Second, you should choose sweet potato varieties according to local growing conditions and suit measures to local conditions. Not all sweet potato varieties are suitable for the local growing environment. In addition, sweet potatoes like sandy loam soil. If the local soil conditions do not match the growth habits of sweet potatoes, then no matter how good the sweet potato variety is, it is useless. In addition, you should reasonably choose sweet potato varieties according to different use purposes and the local maturity time of sweet potatoes.

Third, you should introduce seeds from reliable departments, and the introduction area had best be one without diseases. In addition, when selecting seeds, do not blindly pursue the size of the tubers. Oversized tubers not only affect the taste, but are also not welcomed by the market during the sales process.

Finally, you should consider the resistance of sweet potatoes. A good sweet potato variety must not only be outstanding in taste, but also must have good resistance. Resistance includes the sweet potato's disease resistance, waterlogging resistance, drought resistance, and other characteristics, as well as its adaptability to soil.

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