Arrobas, MargaridaCoutinho, João2014-01-032014-01-031994Arrobas, Margarida; Coutinho, J.; Coutinho, J. (1994). Evaluation of soil test methods for the estimation of plant available phosphorus in the most representative soils from Portugal. 2. A greenhouse study with north-eastern soils. In 3rd Congress of the European-Society-for-Agronomy. Padova. p. 440-441. ISBN 2-9505124-1-0http://hdl.handle.net/10198/9060The major objective of soil tests for P is (i) to provide an index of the capacity of the soil to supply P to a crop and (ii) to group soils into classes for the purpose of making profitable fertiliser P recommendations (Kamprath et al. 1980).engSpin-offPortugalconference object