Agricultural Uses of Sulphur

Sulphur in the form of elemental sulphur, sulphur dioxide, sulphuric acid, urea- sulphuric acid mixtures, ammonium thiosulfate and ammonium polysulfide, is known to improve the physico-chemical properties of calcareous soil.

In the soil, elemental sulphur is changed into sulphuric acid which reacts with calcium carbonate. As a result of this reaction calcium is freed and replaced with sodium in the soil and increase the water infiltration.

2S + 3O₂ + 2CaCO₃ + 4NaX = 2CaX₂+2Na₂SO₄+2CO₂

CaSO₄ + 2NaX = CaX₂ + Na₂SO₄

H₂SO₄ + CaCO₃ + 2NaX = CaX + Na₂SO₄ + CO₂ + H₂O

There are some nutrients into the alkaline and calcareous soils, which change into insoluble forms and decrease the plat nutrients uptake. These substances include, manganese, phosphorous, iron, zinc etc. This type of uptake is increased by elemental sulphur for the high agricultural productivity.

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