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The solution of common problems in pepper seedlings
The main reason for the delayed emergence was caused by the low temperature and frequent rain after transplanting. The water in the bed became infiltrated, leading to a lack of moisture on the surface of the soil, which negatively affected the seedlings. To address this, it's recommended to use a sprayer during midday on sunny days to mist the seedlings, adding moisture and maintaining optimal humidity to encourage healthy growth.
Burning of seedlings typically occurs during the middle stage of the growing period, when temperature fluctuations are significant. This is a type of high-temperature physiological disorder caused by poor management practices during the early stages. Proper ventilation should be ensured on sunny days, especially when temperatures exceed 20°C at noon, and the plastic cover should be fully removed to prevent heat stress.
Flash seedlings result from improper ventilation and management, causing sudden changes in the seedling environment. After removing the cover, the seedlings may wilt, their leaf margins may curl, and the leaves may turn white and dry. It’s important to ensure timely and adequate ventilation. Open the air vents on the leeward side and replace them regularly to maintain good airflow.
Zombie seedlings, also known as stunted seedlings, are caused by poor soil management and an unbalanced seedbed structure. They are characterized by small, yellow leaves, slow growth, and thin, hard stems. Increasing light exposure, providing sufficient water during the seedling stage, and maintaining soil moisture at 70%–80% can help. Applying foliar fertilizer will further support the development of strong, healthy seedlings.
Disease prevention is crucial for pepper seedlings. The main diseases are damping-off and blight. Damping-off often occurs under low temperatures and high humidity, while blight tends to develop in high-temperature and high-humidity conditions. To prevent these, you can spray a solution of 70% thiophanate-methyl diluted 800 times or 50% mancozeb diluted 500 times. Regular monitoring and timely treatment are essential to keep the seedlings healthy and vigorous.