Dataset - Potential of Mehlich 3 method for estimating plant available sulfur

The aim of this research is to compare the results of M3 estimated sulfur with the different sulfur fractions in the set of soil samples taken up from the sites with wide range of pH values as well as the sulfur contents. Due to the using of correlation analysis will be possible to estimate the sulfur form, which is in the closest relation to M3 method. Based on the results will be possible to predict potentioal of M3 to estimate plant available S. The study of the set of 98 samples from different commonly used agricultural soils showed that S content estimated with M3 method closely corresponds with the amounts of bioavailable S fractions. That was confirmed with both, correlation and regression analyses as well as the fact that relations between SM3 and organic S fractions were very weak. M3 can be also evaluated as a suitable extractant for bioavailable sulfur for the commonly used arable soils. To confirm this preliminary study, further research of SM3 and S content and uptake by different plant species is needed.