Most of the Sulphur in soils in found in organic matter
Most of the Sulphur in soils is found soil in organic matter. However, it is not available to plants in this form. In order to become available to plants, the Sulphur must be first released from the organic matter and go through mineralization process.
The mineralization process is a result of microbial activity. In this process Sulphur is converted to the sulfate form (SO4-2), which is readily available to plants. The process is affected by the C/S ratio, temperature and moisture.
Functions of Sulphur and Sulphur deficiency
Sulphur is essential for plant growth and functioning. Sulfate taken up by the roots is the primary Sulphur source for growth, but additionally plants are able to utilize absorbed Sulphur gases by the shoot. Sulphur improves the efficiency of other essential plant nutrients, particularly nitrogen and phosphorus.
Sulphur deficiency in plants
Sulphur deficiency* in animals
|The plants turn yellow||Decreased wool production|
|Reduced Phosphorus and Nitrogen uptakes||Retarded growth|
|Clovers grow better in urine patches||*Excessive Sulphur may induce copper/selenium deficiency in cattle|
|Slow pasture growth|
|Poor protein levels|