In vegetable nurseries, it's common to encounter issues like root rot, which can significantly affect the healthy growth of seedlings. This problem is often caused by low temperatures, poor lighting, and high humidity in the nursery bed. If the seedbed isn't properly ventilated, the seedlings become weak and more susceptible to diseases. The symptoms typically include brown, rotten roots, slow growth after emergence, no new root development, and even stunted growth. Leaves may turn pale green and eventually yellow, leading to plant wilting. To prevent and manage this issue, the following steps should be taken:
First, increase the use of organic fertilizer. Decomposed organic matter, especially hot farmyard manure, not only enhances the seedlings' resistance but also helps raise the soil temperature in the nursery, reducing disease occurrence. Before planting, mix finely crushed hot manure with the bed soil in a 5:1 ratio to create a nutrient-rich growing medium. Avoid using too much nitrogen-based fertilizer as a base. Important note: Ensure the organic fertilizer is fully decomposed, and consider using a specialized fermentation agent (like a goldfish starter) to prevent "seedling burn" and nutrient loss.
Second, control watering carefully. When raising seedlings in greenhouses or shelters, avoid overwatering. Only water when the topsoil becomes dry and doesn’t crumble easily. During severe droughts, water in moderation to avoid waterlogging.
Third, ensure proper ventilation. Once the cotyledons have unfolded, choose a sunny and warm day to open the cover for ventilation. Spread a thin layer of dry soil evenly over the seedbed before re-covering. This helps reduce soil moisture and provides a warming effect.
Fourth, apply a root-promoting agent. Using microbial products can improve the root environment, stimulate early germination, increase soil temperature, and help weak seedlings grow stronger. Products like Jinbao Rooting Agent offer both preventive and curative effects. For example, during the seedling stage, mix 50ml of the product with 10-20 times water and blend it into 50kg of nutrient-rich soil or 4-5m² of the seedbed. This promotes faster germination, uniform emergence, and healthier seedlings. During the two-leaf stage, dilute the product 30 times and apply 5-10kg per square meter through watering or spraying. It encourages main root elongation, stronger lateral roots, and improved root vitality. For more details, visit the official website or contact support.
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