The Effects of Using Vermicompost and Photosynthetic Bacteria on Growth and Yield of Chinese Kale
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Abstract
The objective of this research was to study the effect of using vermicompost and photosynthetic bacteria on the growth and yield of Chinese kale (Brassica oleracea var. Alboglabra). The experiment was conducted using a completely randomized design with seven treatments and four replications. The treatments included: no fertilizer application as the control (T1); application of chemical fertilizer formula 15-15-15 (T2); application of vermicompost at 250 kg/rai (T3); vermicompost at 500 kg/rai (T4), foliar spray of photosynthetic bacteria at a ratio of 50 mL per 20 L of water (T5); foliar spray of photosynthetic bacteria at a ratio of 100 mL per 20 L of water (T6); and vermicompost at 500 kg/rai combined with foliar spray of photosynthetic bacteria at a ratio of 100 mL per 20 L of water (T7). The results showed that at the time of harvest, 50 days after transplanting, treatment 2 (chemical fertilizer 15-15-15) produced the highest growth and yield of Chinese kale. However, this was not statistically different from T7, where vermicompost at 500 kg/rai was combined with a foliar spray of photosynthetic bacteria at a ratio of 100 mL per 20 L of water. This study concluded that using vermicompost at 500 kg/rai in combination with photosynthetic bacteria spray at 100 mL per 20 L of water can serve as an effective alternative to chemical fertilizers in Chinese kale production. The findings provide a model for organic farming that promotes quality of life, better health through a cleaner environment, increased product value, and economic sustainability for farmers. However, further field trials and on-farm research should be conducted before promoting widespread adoption of these results.
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References
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