Evaluation of the growth, yield, and quality of five Kale (Brassica oleracea var. acephala) varieties grown on coconut coir substrate under net house conditions
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Abstract
The study aimed to evaluate the effects of different varieties on the growth, yield, and quality of kale grown on coconut coir substrate in net house conditions at Can Tho University. The experiment was arranged in a completely randomized design comprising five treatments associated with five kale varieties: (1) Rong Bien Xanh, (2) Rong Bien Tim, (3) Xoan Xanh, (4) Xoan Tim, and (5) Xoan Xanh Viet. Each treatment was replicated six times. The results showed significant differences among cultivars for growth attributes and production quality. The Xoan Xanh kale showed superior performance with a leaf length of 25 cm, a stem diameter of 14.7 mm, an average leaf weight of 11.2 g, a total leaf weight of 819 g/plant, and the highest vitamin C content at 39 mg/100 g. The Rong Bien Xanh kale had the highest number of leaves (84 leaves/plant) and the widest leaves (15.6 cm), yet it recorded the lowest vitamin C content (26 mg/100 g). Meanwhile, the Xoan Tim kale had the lowest yield, producing only 45.7 leaves/plant and a total leaf weight of 443 g/plant. The Xoan Xanh kale exhibited appropriateness in net house environments owing to its remarkable growth traits, substantial yield, and superior quality relative to the other varieties, making it advisable for commercial cultivation.
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References
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