Raising seedlings of solanaceous fruit vegetables is a key step in obtaining strong seedlings

Raising seedlings of solanaceous fruit vegetables refers to the process of growing seedlings in a concentrated way before transplanting tomatoes, eggplants, peppers and other fruit vegetables of the Solanaceae family. The seeds of these vegetables are relatively small, the seedlings grow slowly, and they like warmth and fear cold, so they usually need to be raised in protected facilities such as greenhouses, plastic tunnels or small arched sheds. Raising seedlings is the first procedure in solanaceous cultivation and is directly related to later growth and yield.

Seedling raising first requires good seed treatment: reduce surface pathogens by sunning the seeds, soaking them in warm water or disinfecting them with chemicals, then germinate them until the radicle emerges before sowing. The seedbed soil or substrate should be loose, fertile and free of pathogens and insect eggs, and is generally prepared from garden soil, decomposed organic fertilizer, peat and other materials. Sowing should not be too dense, and the covering soil should be about one to two times the diameter of the seed; after sowing, keep warm and moist to promote emergence.

Before emergence, maintain a relatively high temperature; after emergence, ventilate and cool appropriately to prevent the seedlings from becoming leggy. Water management should follow the principle of alternating dry and wet; too much watering easily induces damping-off, Rhizoctonia rot and other seedling diseases. When the seedlings reach a certain size, transplant them into wider spacing to expand the nutritional area and promote root development. Before transplanting, gradually lower the temperature and control water to harden the seedlings, which can improve their stress resistance.

Common problems during the seedling stage include leggy growth, stunted seedlings and diseases. Leggy growth is mostly caused by excessively high night temperature, insufficient light or too much humidity, so ventilation should be strengthened and light increased; stunted seedlings are often caused by low temperature and drought or compacted seedbed soil, so the root-zone environment needs to be improved. Diseased seedlings should be removed in time and combined with chemical control to prevent the spread of disease.

Using seedling transplanting allows centralized management, saves seeds, makes it easier to arrange crop rotations and bring produce to market early, and the seedlings are uniform and sturdy, so they recover quickly after transplanting and have a high survival rate. Whether in open-field or greenhouse cultivation, raising strong seedlings is a basic step for high and stable yields of solanaceous fruit vegetables.