1) urea with using urea 500 g Rai
2) ammonium nitrate (NH4NO3) using rate of 3-30 grams per ton, with ammonium hydrogen phosphate,. ((NH4) 2 HPO4) using rate of 0.2-20 G T
.3) recipes Modified Gillard. "S Medium (MGM) which has 6 chemical species, namely, sodium nitrate (NaNO3) used 42.5 g, sodium hydrogen phosphate (Na2H2PO4) used 10.74 grams per liter. Ferric sulphate (FeSO4) used 0.28 g / L
sodium EDI (Na2EDTA NCAA (C10H14O8Na2.2H2O) used 37.2 g / L and manganese chloride MnC12 use 0.019 G using freshwater mixed. And control the proper conditions by
(Ruangchuay et al, 2012)
.
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