The sulphur status of Quebec soils with particular reference to the amount of organically combined sulphur and the nature of its combinations.

Interest in the sulphur status of soils stems from the fact that sulphur is an element essential for the growth of all plants. Although sulphur deficiencies have not so far been reported in the Province of Quebec, they are of considerable importance in some areas of North America, and the prevailing trend towards use of more concentrated fertilizers containing little or no sulphur in incidental impurities, has caused some workers to wonder whether such deficiencies should in the future be expected to occur in the province