Key Management Techniques for Eggplant After Transplanting in Winter Greenhouses

With the advancement of agricultural technology, there are more and more off-season vegetables, which can be supplied to the market continuously throughout the year, allowing us to eat a variety of vegetables even during the off-season. Growing eggplant in winter greenhouses is also a common practice, and the management after transplanting is extremely important for a bumper eggplant harvest. How to manage it reasonably is directly related to eggplant yield. Let's take a look together below.

1. Greenhouse Temperature Management

After transplanting, eggplant has relatively high temperature requirements. Eggplant is a warmth-loving crop, so for one week afterward, the daytime temperature should be kept at around 30 degrees, and the nighttime temperature should be kept at about 15 degrees. After one week, the eggplant begins to show obvious growth. At this point, the greenhouse temperature can be appropriately lowered to prevent the plants from growing leggy. Until the eggplant sets fruit, the temperature can be kept at around 25 degrees during the day and 12 degrees at night. At the same time, pay attention to climate changes to avoid excessively high temperatures and prevent leggy growth of the plants.

2. Pay Attention to Environmental Ventilation

When the temperature and humidity inside the greenhouse are too high, diseases and pests are extremely easy to breed. Therefore, when the indoor temperature exceeds 25 degrees, ventilation is needed in time, and when the nighttime temperature is higher than 15 degrees, appropriate ventilation is also needed. On cloudy and rainy days or after watering, the humidity inside the greenhouse will also rise relatively, and appropriate ventilation is needed at this time as well, especially during early spring. This is a period when diseases occur at a high rate, and diseases are more likely to breed, so timely ventilation is indispensable.

3. Fertilizer and Water Management

Eggplant grown in greenhouses does not grow very fast, and its water demand is not very large either. Small furrow irrigation is sufficient. Watering should be done in the morning on sunny days. Watering is prohibited on cloudy and rainy days or in the afternoon, as it can easily cause the low temperature to rise again and damage the root system. For several days after watering, appropriate ventilation is needed, and the amount of water each time should be moderate, not too large. Eggplant yield is inseparable from fertilizer. Topdressing is needed starting before flowering, and fertilizer should be applied once after each harvest. Compound fertilizer or urea combined with potassium sulfate can be used. Organic fertilizer must be fully decomposed before use. Raw fertilizer or overly concentrated fertilizer must be avoided.

4. Pruning and Branch Removal

To achieve high eggplant yields, pruning and branch removal are indispensable. For two-stem pruning, the side branches below the first fork can be removed together, retaining only the two side branches that appear at the first fork. All branches that grow later must also be completely removed. Just like watering, eggplant pruning and branch removal should also be done in the morning on sunny days to prevent wound infection caused by branch removal. When removing branches, also be careful not to cut the side branches too close to the fruiting branch. Leave a short stub, which can keep the wound away from the main stem and reduce the incidence of disease on the main stem.

The above is an introduction to the management techniques for eggplant after transplanting in winter greenhouses. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.