Sulphur is required by all plants although the amount needed varies considerably between plant species. The Sulphur requirement of crops had in the past been largely met from atmospheric pollution arising from power stations. With a recent reduction in the number of these and more efficient cleaning methods of emissions, Sulphur deposition is currently only some 15% of the levels that were deposited in 1980. As a result, over the last two decades more and more people have realised that crops have shown a positive response to an application of Sulphur and now it is routinely applied to a large percentage of crops.
The principle role of Sulphur in plants is as a major component of some of the amino acids. These amino acids are the building blocks from which protein is made and therefore Sulphur nutrition is always associated with and linked to Nitrogen nutrition. In fact the ratio of N:S that most plants require is a very constant 12:1. Any less S and the N nutrition can be compromised. An excess of S however appears not to upset the balance and plants can regulate the quantity which they absorb.
The high level of Sulphur in Patentkali is present in the Sulphate form which is also the form that plants are able to absorb. No chemical transformation is required therefore and this important nutrient is available for immediate uptake.