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The effects of organic materials on the growth of Boesenbergia rotunda

Boesenbergia rotunda (L.) Mansf. commonly known as temu kunci is a perennial herb
which is botanically described as a small herbaceous plant. Temu kunci has a short, fleshy
or slender rhizome shape. The rhizomes of B. rotunda have been widely used as spices
due to their aromatic flavour, which promotes appetite. This herbal plant is also used as
flavouring agents, dyes and traditional medicine to cure various kinds of illnesses. Organic
materials have been widely used in agriculture development to improve soil quality,
increase crop yield, and plant growth performance, and reduce chemical fertilizer usage.
The adverse impact of excessive use of chemical fertilizers in conventional agricultural
practices is well documented. A field study was conducted to identify the effects of
organic materials on the growth of B. rotunda. A completely randomized design (CRD)
was used which involve seven treatments and four replication including control, chemical
fertilizer alone, and 10% additional materials in 5 kg of soil. The organic materials used in
this study are biochar, vermicompost, food waste compost, empty fruit bunch compost and
lignohumate. In this study, the vermicompost gave a significant increase and highest
reading of plant height, number of leaves, rhizome and finger roots fresh and dry weight
compared to other treatments. In conclusion, organic materials can give positive effects on
the growth of B. rotunda and at the same time can reduce the dependencies on chemical
fertilizer.