Bioakumulasi Kobalt Dan Nikel Pada Tanaman Kalakai (Stenochlaena Palustris (B…

For the last 5 years, palm oil plantation in Pakning Asal village, Bengkalis were burned in different frequencies. There were unburned soil and burned soil in several times (2-3 times). Land fires affect the physical chemistry of the soil including macro and micro nutrients in the soil as well as surrounding plant growth. One of them is kalakai which is usually made by vegetables in community. …