| Summary: | Cow manure and bagasse biochar are expected to increase yield of white turmeric (Curcuma zedoaria) and reduce the use of chemical that can trigger global warming. This study aimed to obtain the response of adding cow manure and bagasse biochar on the growth and flavonoids in white turmeric. This research was held in July 2022 – June 2023, located at faculty agriculture experimental field and CV Che-Mix Pratama. The method used completely randomized design with two factors and 3 replications. The first factor was cow manure dose 0, 100, 200, and 300 g perpolybag and the second was bagasse biochar 0, 80, 160, and 240 g perpolybag. Variables consisted number of leaves, number of tillers, diameter, stem dry weight, rhizomes wet weight, rhizomes dry weight, and flavonoids percentage. The data were analyzed using analysis of covariance with a 5% level test and continued with Duncan’s Multiple Range Test at 5% level. Dose 300 g of cow manure was the best treatment to generate the best number of leaves, number of tillers, plant diameter, stem dry weight, rhizomes wet weight and dry weight. The highest flavonoids at 0.06% was found in 100 g of cow manure and 240 g of bagasse biochar.
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