Comparison of selectively mined apatite crystals and commercially available rock phosphate from eppawala, as P fertilizers for flooded rice

Ratnayake, M.P.K.Kumaragamage, D.Dahanayake, K.2015-09-032015-09-031994Tropical Agricultural Research, 6:p.223-230https://dl-ifs.nsf.gov.lk/handle/1/564Comparison of selectively mined apatite crystals and commercially available rock phosphate from eppawala, as P fertilizers for flooded riceArticle