What kind of fertilizer should be used for growing sesame? The fertilizer application varies in the three stages.

During the process of sesame cultivation, the supply of fertilizers directly affects the growth of the plants, the number of flowers and pods formed, and the fullness of the seeds. However, in production, problems such as improper fertilization and incorrect timing often occur, resulting in excessive growth, lodging, premature aging and reduced yield of the plants. How to achieve efficient use of fertilizers has become the core topic of high-yield cultivation of sesame.

First stage: Seedling stage - Need nitrogen, but not too much. From the time sesame seeds sprout until they reach the flowering stage, how deep the root system is established and how vigorous the leaves grow all depend on this stage. At this time, sesame is most "hungry" for nitrogen fertilizer. Sprinkling 5-8 kilograms of urea dissolved in water to the roots of each mu of land, or spreading a handful of compound fertilizer as the base fertilizer, the seedlings will grow rapidly. But don't overdo it! If too much nitrogen is applied, the seedlings will grow taller than a person, and the stems will be as thin as chopsticks, and they will collapse in a gust of wind. The trick of experienced farmers is: Use sufficient base fertilizer, and make fewer additional fertilization during the seedling stage. Controlling the growth rate can make the seedlings grow stronger. If conditions permit, adding a handful of phosphate fertilizer can also make the roots grow deeper and the later resistance to wind damage increase by a factor of two.

Second stage: Seed pod formation period - Focus on phosphorus and potassium. This is the turning point for yield. From the time sesame plants start to flower until the peak flowering stage, this is the critical period that determines the number of seed pods formed. If you apply excessive nitrogen fertilizer at this time, sesame plants will focus on growing rather than flowering, resulting in a lush green field with few seed pods scattered here and there. It's all in vain. The correct approach: Apply 10 kilograms of sulfuric potassium and 5 kilograms of superphosphate to each acre, or directly use 15 kilograms of high-potassium compound fertilizer. Phosphorus promotes flowering and potassium strengthens seed pods. Working on both fronts, the seed pods will be numerous and dense, with each plant able to produce 70 to 80 seed pods, which is twice as many as those without fertilizer. Experienced farmers will also spray a thin layer of potassium dihydrogen phosphate in the morning, at a concentration of 0.2%. Foliar application of phosphorus is three times faster than absorption through the roots, and the effect is immediate.

Stage 3: Grain Filling Period - Supplement Potassium to Maintain Fullness, This Step Determines How Much You Can Sell. After the fruit capsule settles, the seeds begin to fill and expand. At this stage, the sesame plant needs potassium the most. Adequate potassium fertilizer makes the seeds round and full, with high oil yield, and buyers rush to purchase them. Without potassium, the seeds become shriveled and collapsed, and one pound of sesame yields only one and a half pounds of oil, which is a real loss of money. For every one acre, apply 10 kilograms of sulfuric acid potassium or sprinkle a handful of wood ash. This not only supplements potassium but also prevents pests and diseases. During this stage, do not touch nitrogen fertilizer anymore. If sesame plants become overgrown and late-maturing, the fruit capsules burst and the seeds fall off. When weighed, the yield will be reduced by 20%. It's too late to cry.