How to apply topdressing to eggplants in midsummer? Keep these precautions in mind

Eggplants grow relatively fast in high-temperature environments, but they also need a sufficient fertilizer supply to support their growth, so topdressing eggplants in midsummer is extremely important. However, midsummer fertilization also requires attention to several points. Below, let's take a look with the editor at the precautions for topdressing eggplants in midsummer.

1. Apply fertilizer in furrows

When farmers apply chemical fertilizer as topdressing, applying it with irrigation water has become a habit, but this method is not suitable in the high-temperature summer season, because when temperatures are high, a large amount of ammonia volatilizes during flushing application, reducing fertilizer efficiency. Especially with fertilizers such as ammonium bicarbonate, it is more likely to cause nitrogen poisoning in eggplants, so applying it in furrows or digging holes and burying it gives the best results. After topdressing, the soil covering thickness should be no less than 5 cm to reduce volatilization of the effective components of the chemical fertilizer.

2. Pay attention to the dosage

Eggplants have a relatively large demand for nitrogen fertilizer, but in the high-temperature season, the principle of “eat small meals more often” must be followed, and each application of urea per mu should be controlled within 30 kg. This is because in the high-temperature season, urea converts relatively quickly after being applied to the soil. 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 rate of ammonium bicarbonate per mu each time should preferably not exceed 40 kg. If the application rate is too large, it will not only cause nutrient loss, but also cause ammonia damage to the leaves and fruits of eggplants.

3. Reasonable combination

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

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