Improper sowing date or less nitrogen fertilizer exposed to late planting sowing date is too late, nitrogen fertilizer is insufficient; in the case of delayed harvest, vulnerable to low temperature, cold wave invasion, petiole softening, hollow. Prevention: Farmers should determine suitable sowing dates according to local climatic conditions and cultivation facilities, and strengthen fertilizer and water management in the early and middle growth periods to provide sufficient nitrogen fertilizer. Plants are not cold tolerant to cold celery, temperatures below 0°C may cause symptoms of freezing, petiole tissue structure is destroyed, the temperature can not recover after the temperature rise, the cell gap increases, resulting in hollow. Prevention: Insulation measures should be taken during the cultivation process to ensure safe wintering. Variety degraded celery and common celery are prone to natural hybridization, resulting in the degradation of the variety. Prevention: Strictly separate from other celery varieties when leaving seed, and avoid using hollow plants to keep seed during seed production. Perching Stool With Plain Back,Perching Stool With Pvc Padded ,Perching Stools For Disabled ,Perching Stool With Pu Padded Seat Active Life Healthcare Co.,Ltd , https://www.alh-med.com
Causes and prevention of hollow cracking of the celery stem
The lack of boron in the soil is the main cause of cracking of petioles. Prevention: 0.5 to 1 kg of borax per acre is used as a base fertilizer. Once a slight cracking handle is found, 0.2% to 0.5% of borax solution can be used for foliar spray, or 0.25% of borax solution can be used to root.