Detailed Guide to Precautions for Topdressing Eggplant in Midsummer

Eggplant grows faster under high-temperature conditions, but it also needs a sufficient fertilizer supply to support its growth needs, so topdressing eggplant in midsummer is extremely important. However, midsummer fertilization also requires attention to several points. Below, let's take a look together with the editor at the precautions for topdressing eggplant in midsummer.

1. Trench Application of Fertilizer

When farmers apply chemical fertilizer as topdressing, applying it by flushing with water has already become a habit, but this method is not suitable in the high-temperature summer season, because when the temperature is relatively high, a large amount of ammonia volatilizes during flush application of chemical fertilizer and reduces fertilizer efficiency. Especially for fertilizer such as ammonium bicarbonate, it is more likely to cause nitrogen poisoning in eggplant, so applying it in trenches or digging holes and burying it gives the best effect. After topdressing, the thickness of the soil cover should be no less than 5 cm, to reduce volatilization of the effective components of the chemical fertilizer.

2. Pay Attention to the Amount Used

Eggplant has a relatively large demand for nitrogen fertilizer, but in the high-temperature season, the principle of “small meals, more often” must be followed, and each application of urea per mu should be controlled within 30 kg. Because in the high-temperature season, after urea is applied to the soil, its conversion speed is relatively fast. After meeting the needs of the plant, the excess nutrients will be lost, causing waste, especially in sandy soil, where the proportion lost will be even greater. The application amount of ammonium bicarbonate per mu each time should preferably not exceed 40 kg. If the application amount is too large, it will not only cause nutrient loss, but also cause ammonia damage to eggplant leaves and fruit.

3. Reasonable Combination

Although eggplant has a relatively large demand for nitrogen fertilizer, phosphorus and potassium fertilizers are also indispensable. During topdressing, nitrogen-element chemical fertilizer alone cannot be applied every time. During the full fruit-bearing period, it is best to apply a ternary compound fertilizer twice, but each time per mu it is best to use no less than 40 kg, to meet the needs of eggplant growth and fruiting and increase yield.

The above is an introduction to the precautions for topdressing eggplant in midsummer. I hope it can help you. If you want to learn more related knowledge, please stay tuned to us.