The primary cause of petiole cracking is a deficiency in boron within the soil. To prevent this, farmers should apply 0.5 to 1 kg of borax per acre as a base fertilizer during planting. If early signs of cracking are observed, a foliar spray of 0.2% to 0.5% borax solution can be applied, or a 0.25% borax solution can be used for root drenching. These treatments help strengthen the plant and reduce the risk of structural damage.
Improper sowing dates or insufficient nitrogen fertilizer can also lead to issues. Sowing too late or not providing enough nitrogen may result in weak growth, making plants more susceptible to cold stress and petiole softening or hollowing. To avoid this, farmers should adjust sowing times based on local climate conditions and available growing facilities. Ensuring adequate nitrogen supply during the early and mid-growth stages is crucial for strong plant development and resilience.
Cold-sensitive celery varieties are particularly vulnerable to freezing temperatures below 0°C. Such conditions can damage the petiole's cellular structure, leading to irreversible damage and hollowing. To protect the crop, it's important to implement proper insulation techniques during cultivation, especially in winter, to ensure the plants survive safely through cold periods.
Lastly, some celery varieties, such as degraded celery and common celery, are prone to natural hybridization, which can lead to a decline in quality and uniformity. To maintain genetic purity, it's essential to isolate seed-producing plants from other celery varieties. Farmers should also avoid using hollow or weakened plants for seed production to preserve the integrity of the variety over time.
By following these practices, growers can significantly improve the health and quality of their celery crops, reducing losses due to environmental and genetic factors.
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