By: Joseph and Jayne

Why do plants need sulfur?

In plants, sulfur is essential for nitrogen-fixing nodules on legumes, and necessary in the formation of chlorophyll. Plants use sulfur in the processes of producing proteins, amino acids, enzymes and vitamins. Sulfur also helps the plant’s resistance to disease, aids in growth, and in seed formation.

Where does it come from?

It is found in the earth’s crust, in the ocean and even in meteorites. Sulphur occurs naturally all over the world and is most prolific where sulphur-rich gas and oil is processed and refined (the US, Canada, the Former Soviet Union, and West Asia). Canada is the biggest exporter and China is the biggest importer of sulphur.

Signs that a plant is lacking Sulphur:

the leaves can become pale-yellow or light-green. S-deficiency symptoms appear first on the younger leaves, and persist. In cotton, tobacco and citrus, some of the older leaves are affected first. Plants deficient in S are small and spindly with short and slender stalks, their growth is stunted, maturity in cereals is delayed, nodulation in legumes may be poor, fruits often do not mature fully and remain light-green in color, and have lower nutritive value.

How to correct S- Deficiency:

Ammonium suplhate fertilizer