What is the best fertilizer for corn?

Corn fertilization time

The best time to apply top dressing to corn is in late June. Applying top dressing at this time can meet the nutrient needs of corn during jointing and ear formation, allowing the corn to grow large ears and more grains.

The topdressing of corn is generally based on nitrogen fertilizer, which can be divided into two times. It is best to do it when 8-10 leaves grow and when the corn fruits just grow out. 30-40 kilograms are enough at one time.

What fertilizer to use for corn

1. During the entire growth process, corn requires nitrogen the most, followed by potassium, and phosphorus the third. The ratio of nitrogen, phosphorus and potassium is 1:0.49:0.9. Some mineral elements should also be applied in appropriate amounts.

2. Corn base fertilizer can be 3,000 kg of organic fertilizer, all phosphorus and potassium fertilizers, and 1/3 nitrogen fertilizer. Since the root system of the seedlings is underdeveloped and its ability to absorb nutrients is weak, you should buy fertilizers containing fast-acting nutrients as seed fertilizers. You can also apply decomposed farmyard manure at the same time.

Corn Fertilization Method

1. Base fertilizer : Corn base fertilizer is generally based on farmyard manure, supplemented by chemical fertilizer. One acre requires 3,000 kilograms of farmyard manure and about 50 to 100 kilograms of compound fertilizer, phosphate fertilizer, potassium fertilizer, and urea.

2. Fertilizer for the seedlings : After corn is planted, fertilizer should be applied when seedlings grow out. Apply more fertilizer to those with weaker growth and less fertilizer to those with stronger growth. Fertilizer for the seedlings mainly uses urea, and an average of about 50 kilograms is required per acre.

3. Seedling-raising fertilizer : When the corn grows to 40 centimeters, you can apply seedling-raising fertilizer to the corn. The seedling-raising fertilizer is similar to the seedling-level fertilizer, which is also mainly composed of urea and can be mixed with 30 kilograms of compound fertilizer.

4. Fruit-promoting fertilizer : After the corn ears are formed and corn cobs appear, you can spray some foliar fertilizer and a small amount of boron fertilizer and potassium fertilizer to ensure the survival and growth of the corn cobs.

Corn Fertilizer Precautions

Corn fertilization should be applied according to the time and location. If the corn seedlings grow too slowly, you can add more fertilizer. If the soil is not fertile enough or is relatively poor, you can add more fertilizer. When applying fertilizer, be careful not to place it too close to the roots of the corn seedlings.