What kind of fertilizer is good for onion base fertilizer (base fertilizer application method)

Onion fertilizer selection

When applying base fertilizer to onions, you need a fertilizer with better fertility because its root system's absorption ability is not very good. Generally, balanced fertilizers rich in humic acid and biological fertilizers are used because they can meet the nutrients needed for growth and increase its yield.

How to apply onion base fertilizer

When fertilizing onions, it is usually applied in conjunction with plowing and land preparation. It is applied to the middle and upper layers of the soil, and then the seedlings are transplanted and planted. This way, they can fully absorb nutrients and grow well.

How much base fertilizer should be used for onions

When applying base fertilizer to onions, it is necessary to consider the soil conditions and its growth potential. Generally, 1.5-22.5 tons of organic fertilizer, 4-66 kilograms of phosphorus fertilizer, and 5 kilograms of potassium fertilizer are applied per mu.

How to apply base fertilizer to onions

When caring for onions, top dressing needs to be done in time, usually after the seedlings have grown. The bulb expansion period is the key top dressing period, and top dressing should be done 2-3 times, with 3-4 kg of nitrogen applied per mu each time. Fertilization should also be carried out in accordance with the fertility conditions at the time to avoid fertilizer damage and affect growth.