The behaviour of available phosphorous and its relationship with plants in acid volcanic soils of the Canary Islands
Keywords:Alfisol, Andisol, Phosphorus, Aluminium
AbstractA study of multiple components, followed by discriminant analysis, distinguished two basic main groups of acid volcanic soils in the Acentejo District in the north of Tenerife (Canary Islands): desaturated Andisols and Alfisols. Available P (determined by the methods of Olsen and Dyer) and exchangeable Al extracted with 1N NH4OAc (pH 4.8), and 1N KCl were used as variables. Plant uptake of P depended on the amount of available P (Dyer method) in the Alfisols, and on available P (Dyer method) together with exchangeable Al (KCI) in the desaturated Andisols.