Main Article Content
Biochar is an effective material for carbon sequestration in the soil and encouragement soil physical, chemical and biological properties. The aim of this experiment was to study the effect of biochar application with fertilizer management on growth, yield, nutrient concentration and nutrient accumulation in dwarf yard long bean cv. KKU 25 and residual nutrient content in postharvest material. The experimental design was arranged in 2 x 4 factorial in CRD with three replications and consisting of 2 factors. The first factor was to apply biochar (A1) and not apply biochar (A2) to planting material. The second factor was the fertilizer management of four methods as no fertilizer (B1), chemical fertilizer at the rate equivalent to using organic fertilizer 500 kg/rai (B2), organic fertilizer at 500 kg/rai (B3) and organic fertilizer at 1,000 kg/rai (B4). The results showed that the biochar application with planting material made dwarf yard long bean growing, yield and nutrient content higher than those of no application. However, the different fertilizer management methods did not affect both the growth and the nutrient content in the yield. The interaction between biochar and fertilizer management was found to be significantly different (p ≤ 0.05). For nutrient content in postharvest material, it was found that addition of biochar resulted in a significant difference (p ≤ 0.05) in nutrient and organic matter content. Therefore, the biochar application with planting material could promote growth, increase plant nutrient accumulation and also reserve nutrients to benefit the plants in the next crop season.
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