Temu ireng (Curcuma aeruginosa Roxb.) is a traditional medicinal plant that has long
been used to treat various diseases, such as fever and pain. Temu ireng
contains various bioactive compounds, such as essential oils, saponins,
flavonoids, and curcuminoids. Seeing the various prospects of the temu ireng
rhizome, an increase is sought by expanding the production area and improving
the quality of cultivation by intensively fertilizing using corn cob biochar
and cassava peel compost fertilizer. The research was conducted from November
2022 - April 2023 at the UNS Faculty of Agriculture Laboratory in Jumantono.
The research was arranged in a completely randomized design (CRD) with two
treatment factors and repeated 3 times. The factors used were the application
of corn cob biochar (0, 160, 240, and 320 g/polybag) and cassava peel compost
fertilizer (0, 100, 200, and 300 g/polybag). The observation variables
consisted of plant height, rhizome fresh weight, rhizome dry weight, and temu
ireng flavonoids. Data analysis in this study was quantitative. The parameters
were analyzed by variance (ANOVA) test at the 5% level, if there was a
significant difference, then the DMRT test at the 5% level. The results showed
that at 24 MST the combination of corn cob biochar and cassava peel compost
fertilizer produced a real difference. The use of 320 g/polybag corn cob
biochar and 300 g/polybag cassava peel compost fertilizer increased plant
height to 139.3 cm, fresh weight to 656.21 g, and dry weight to 348.17 g, and
the flavonoid content was 0.057%.
