Weerasooriya, HMJC; Waisundara, WMLB; Lakmal, KPT; Hemalal, PVA; Rohitha, LPS; Ratnayaka, NP
[Conference-Full-text]
Apatite mined f r om Eppawala (Eppawala Rock Phosphate - ERP) cannot be directly
used as a fertilizer for armual crops such as paddy and vegetables because of its low
water solubility. It is difficult to manufacture water ...