Suphasit Sitthaphanit, Viriya Limpinuntana, Banyong Toomsan, Santibhab Panchaban and Richard W Bell 2010. Growth and Yield Responses in Maize to Split and Delayed Fertilizer Applications on Sandy Soils Under High Rainfall Regimes: . Agriculture and Natural Resources. 44, 6 (Dec. 2010), 991–1003.