How to Grow Sweet Potatoes for High Yield? Latest Cultivation Techniques and Methods Tutorial

Sweet potato is one of China's five grains and miscellaneous crops. As people's awareness of health and wellness grows, the market for sweet potatoes is much better than before. Growing sweet potatoes is simple, but achieving high yield requires some effort. Below, let's take a look at the detailed information together.

1. Land Preparation and Fertilization

Sweet potato is a root tuber plant and is best grown in soil that is deep, loose and well aerated. Before planting, deep plow the soil layer to improve its permeability, which helps the root tubers expand and increases yield. Plowing is generally done to 30-40 cm; ridged cultivation can be used, and if the soil fertility is poor, flat planting or low-ridge cultivation can be used. However, sweet potatoes are generally grown on sandy soil with insufficient fertility, so base fertilizer must be applied to achieve high yield. Generally, 2000-2500 kg of decomposed organic fertilizer per mu is applied, together with 50 kg of nitrogen-phosphorus-potassium compound fertilizer.

2. Seed Selection and Cultivation

Choose high-yielding, disease-resistant, high-quality varieties, such as virus-free Beijing 553, virus-free Xushu 18, and Xinnong No. 1. Climate and soil conditions differ from region to region, so the planting time should be chosen according to local conditions. Generally, planting time is from April to May, when rainfall is abundant and temperatures are suitable, resulting in a high survival rate after planting. When planting, pay attention to planting density: varieties with long vines and plots with sufficient fertility should be planted sparsely, while varieties with short vines and plots with insufficient fertility should be planted densely.

3. Intertillage and Weeding

Proper intertillage during the growing period can loosen the soil, increase permeability, raise soil temperature, and also eliminate weeds. Generally, during the seedling stage, intertillage and weeding should be done several times to promote seedling growth, but be careful with the depth of intertillage to avoid damaging the root system and affecting the plant's normal growth and development. For long-vine varieties, pinch off the growing tips in time once they reach a certain length, so that the stems and vines become thick and produce more branches, which helps increase yield. When the tubers are expanding, control the vines to prevent excessive vegetative growth from affecting yield.

4. Fertilizer and Water Management

When the tubers are expanding, some regions are dry with little rain, while others are hot with abundant rain. These environments are both unfavorable to sweet potato growth. In dry, rain-scarce regions, water promptly to prevent early senescence of stems and leaves and to promote tuber expansion; in hot, rainy regions, take good drainage measures to avoid waterlogging that causes root rot or rapid tuber expansion, which is bad for quality. During expansion, you can spray tuber expansion agents and foliar fertilizer to promote the transfer of nutrients to the root tubers, accelerate nutrient accumulation, and produce an obvious yield increase.

The above are high-yield cultivation techniques for sweet potatoes. We hope they can help you. To learn more related knowledge, please stay tuned to us.