Pengayaan Bahan Ajar Ekofisiologi Tumbuhan Berbasis Riset Pertumbuhan Akar Ta…

The ex-situ experimental research on root growth of rubber (Hevea brasiliensis Mull. Arg. clone PB 260) cultivated in ex-mining bauxite soil by application of organic manure has been carried out at Natural Biology Education Laboratory University of Riau during January to June 2013. This research aimed to: (1) looked for a kind and mixture ratio between organic manure to ex-mining bauxite soil t…