Comparison of ammonium lactate, sodium bicarbonate and double calcium lactate methods for extraction of phosphorus from wetland peat soils

E. Otabbong; P. Leinweber; A. Schlichting; R. Meissner; M. Shenker; I. Litaor; A. Sapek; S. Robinson; A. Niedermeier; H. Hacin; J. R. Otabbong