Cutting Wheel,Cut-Off Wheel,Cutting Disc,Super Thin Cutting Wheels Zhengzhou Jinlong Abrasives Co.，Ltd , https://www.jinlongabrasives.com
Vegetable potatoes pay attention to fertilization types
Potatoes are primarily cultivated as a vegetable, with their tubers serving as the main edible part. These tubers are rich in starch, making them a staple crop in many regions. Fertilization practices usually rely heavily on organic materials, complemented by balanced applications of nitrogen (N), phosphorus (P), and potassium (K). In addition to these primary nutrients, the use of micronutrients such as boron and magnesium can significantly enhance both yield and quality.
Potatoes are known as heavy potassium feeders, and the application of potassium fertilizers has been shown to greatly increase yields. Among potassium sources, potassium sulfate tends to be more effective. Research has also demonstrated that nitrogen and potassium have strong interactive effects on potato production. Moreover, boron and magnesium fertilizers have proven beneficial in boosting yields. Soil boron levels should ideally range between 0.6 and 0.66 mg/kg, which is considered the critical threshold for potential boron deficiency in potato-growing areas. Applying 3 kg of magnesium sulfate per mu (approximately 0.15 acres) can help reduce stem and fruit browning symptoms.
For optimal fertilization, it is recommended to apply 300–500 kg of organic fertilizer per mu, along with 6–7 kg of pure nitrogen, 4.5–5.5 kg of phosphorus pentoxide, and 8–9 kg of potassium oxide. Nitrogen should be applied in stages—using a combination of base fertilizer, seed fertilizer, and top dressing—to meet the plant's needs at different growth stages. Phosphate fertilizer is typically used as a base or seed fertilizer, and if applied as a top dressing, it should be placed deep in the soil, though its efficiency remains relatively low. Potassium fertilizer can be applied as a base fertilizer or later in the southern regions.
The base fertilizer should include 300–500 kg of organic fertilizer and 15–20 kg of compound fertilizer. The application methods vary: one method is autumn application, where organic and chemical fertilizers are spread over the field before tillage, then mixed into the soil. Another is spring application, done before plowing in the spring. A third method involves placing the fertilizer directly into the planting furrow during sowing.
Topdressing should be timed according to the growth stages of the potato plant. It is best applied during the seedling stage, bud stage, and early flowering stage. During the seedling and bud stages, nitrogen and phosphate fertilizers are suitable, with about 25 kg of ammonium sulfate, 20 kg of diammonium phosphate, and 20 kg of potassium sulfate per acre. During the bud and early flowering stages, focus on phosphorus and potassium, using 10 kg of diammonium phosphate and 15 kg of potassium sulfate. After the early flowering stage, avoid applying nitrogen to prevent excessive foliage growth, which could interfere with nutrient transport to the tubers.
For medium and micro-nutrient fertilizers like borax and magnesium, foliar sprays are recommended. Apply once every seven days during the early flowering stage, for a total of three times. The concentration should be around 0.05% for borax and 0.5% for magnesium sulfate.
Farmers Daily
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】