Three kinds of fertilizers are good for planting sweet potatoes.
Sweet potatoes are not only rich in nutrition but also a favorite crop among many people. Anyone who likes to grow them will want to plant some wherever there is space. For those growing sweet potatoes, the most concerning issue is how to achieve high yields and better taste. In fact, there are some tricks to growing sweet potatoes. If you don't know these tricks, not only will the yield be low, but the taste won't be good either. During planting and management, as long as you use three types of fertilizers well and remember two methods, you can achieve high yields and good taste. On the contrary, if you use the wrong methods, it will all be in vain.
Three types of fertilizers
Organic fertilizer
Organic fertilizer is an indispensable basic fertilizer for growing sweet potatoes. Fermented and decomposed pig manure, sheep manure, soybean cake, as well as compost and green manure, are all excellent organic fertilizers for growing sweet potatoes. Because sweet potatoes have a long growth period and require long-lasting and multi-element fertilizers during their growth process, organic fertilizers can meet the growth and development needs of sweet potatoes.
Take sheep manure as an example. It contains nitrogen, phosphorus, potassium and various other nutrients. Moreover, it has a long-lasting effect, a mild fertility and can also loosen the soil. When planting sweet potatoes, organic fertilizer can be used as base fertilizer, or a proper amount of compound fertilizer can be mixed as base fertilizer. This can provide a long-term supply of nutrients for the entire growth cycle of sweet potatoes.
2. Potassium fertilizer
Potassium fertilizer is of vital importance for the quality and yield of sweet potatoes. It helps in the development and enlargement of the sweet potato tubers, and increases the starch and sugar content of the sweet potatoes. Especially during the middle and late stages of sweet potato growth, that is, the period when the tubers are developing and enlarging, potassium fertilizer cannot be lacking.
The base fertilizer can be appropriately supplemented with some potassium sulfate or lime soil, but it should mainly consist of nitrogen fertilizer to promote the growth of the seedlings. During the period when the tubers are developing (starting from July), a potassium sulfate application can be made once, or lime soil can be mixed with water and then sprayed around the root cracks. This can quickly replenish potassium fertilizer and improve the yield and quality of the sweet potatoes.
3. Foliar Fertilizer
Most people who grow sweet potatoes often neglect foliar fertilizers. Why do we use foliar fertilizers for sweet potatoes? This is because when sweet potatoes are in the middle and later stages of growth, the vines tend to grow vigorously. Once the vines grow vigorously, the tubers will fail to develop and there will be no yield at that time. Applying foliar fertilizers is to prevent the vines from growing vigorously and to reserve more nutrients for the tubers to enlarge.
For foliar fertilizers, phosphoric acid potassium is usually the choice. Start applying it when the potato vines reach about 60 centimeters in length. Mix 100 grams of phosphoric acid potassium with 30 kilograms of water. Spray once a week for 2-3 consecutive times. This can not only slow down the growth rate of the potato vines but also promote the development of the potato tubers. If the potato vines grow excessively, you can mix phosphoric acid potassium with growth regulator and spray it.
