Sulphur
sulphur: a yellow non-metallic chemical element that is essential to biological life. It is used in the manufacture of sulphuric acid and in the vulcanisation of rubber. COMMENT: In the United Kingdom, the removal of sulphur from the atmosphere means that some crops such as oilseed rape are deficient and sulphur needs to be added to fertilisers. Understanding and using sulphur effectively supports soil fertility and healthy crop growth, enhancing farm productivity.