<![CDATA[Mustard greens (Brasicca chinensis var. Shinensis) is a vegetable plant that is widely used as a processed food ingredient that contains nutrients for living things. To increase the growth and production of mustard greens, it is necessary to improve cultivation techniques, one example is by providing organic materials. This study aims to determine the effect of the dose of compost musicca biocar ambo formulation on mustard greens yield, to determine the effect of several varieties on mustard greens yield, to determine the interaction between the dose of compost musicca biochar ambo formulation and several mustard greens varieties on mustard greens yield. This study used a factorial randomized block (RAK) method, this design consisted of two factors. Factor I is the dose of compost fertilizer consisting of 4 (four) treatment levels, namely: K0 (control), K1 (500 gr / plot), K2 (1 kg / plot), K3 (1.5 kg / plot). Factor II was mustard greens (Brasicca chinensis) varieties, consisting of three treatment levels: V1 (Tosakan variety), V2 (Kumala variety), and V3 (Shinta variety). Nine treatment combinations were used, with two replications. The observation parameters in this study were plant wet weight per sample (grams) and plant wet weight per plot (grams). The results showed that the application of Ambo-formulated Musicca biochar compost had no significant effect on plant wet weight per sample, garden wet weight per plot, and root wet weight per plot. Varieties significantly affected plant wet weight per sample, plant wet weight per plot, and root wet weight per plot. The interaction effect did not significantly affect plant wet weight per sample, plant wet weight per plot, or root wet weight per plot. Keywords: biochar, compost dose, kumala variety, shinta variety, toskan variety]]>
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