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Celery topdressing has tricks
Cultivating celery requires careful and appropriate use of nitrogen fertilizer throughout its growth cycle. Topdressing should primarily be done with ammonium bicarbonate, applied in small amounts multiple times—typically 2 to 3 applications are recommended. However, it's important to avoid using urea on celery. Applying urea can slow down the plant’s growth, increase cellulose content, make the plants more prone to aging, reduce overall quality, and even increase bitterness when consumed. Therefore, urea should not be used at any stage during the growth of celery.
After applying organic fertilizer, it is essential to use fully decomposed and well-fermented compost to improve the quality of the celery. Undecomposed organic matter should never be used as a top dressing, as it may cause root burn. Once properly applied, organic fertilizer helps make the stems softer and stronger, reduces fiber content, and significantly improves both the quality and yield of the crop.
Calcium deficiency in celery can lead to a condition known as "burnt heart," while boron deficiency can cause physiological issues such as hollow stalks and petiole cracking. To prevent "burnt heart," foliar application of a 0.5% solution of calcium chloride or calcium nitrate is effective. To address hollow stalks and petiole cracking, you can apply 0.5 to 0.75 kg of borax per acre, or spray a foliar solution of 0.3% to 0.5% borax. These micronutrient supplements play a crucial role in ensuring healthy and high-quality celery production.