Predictive soil tests should be more useful as results could be used to decide whether or not to apply S-fertiliser in advance of growing crops. But a proper use of S-soil testing is not so easy. Questions about a participation of organic soil matter on the pool of labile sulphpur forms in soils, selecting suitable soil tests and calibration laboratory results into agronomic interpretation should be taken into consideration. (en)
Půdním testem, ve spojení se znalostmi o matečném substrátu a hydro-pedologii profilu půdy pozemku, lze s vysokou pravděpodobností předpovědět možnosti výživy sírou na daném pozemku.