Ammonium Thiosulfate Liquid Fertilizer: A Nitrogen-Sulfur Guide for Wheat and Cotton
Sulfur deficiency is becoming more common on intensively cropped soils in Pakistan, showing up as pale, uniformly yellow young leaves that can be mistaken for nitrogen shortage — the distinction matters because correcting the wrong nutrient wastes an input and delays the actual fix.
Ammonium thiosulfate delivers 11% nitrogen and 25% sulfur in a single liquid product, making it a convenient way to address both nutrients together, particularly useful for wheat and cotton, both of which have meaningful sulfur requirements for protein and oil synthesis respectively.
Being a liquid, it tank-mixes readily with other inputs and can be applied through fertigation systems, though as with any sulfur-containing product it's worth checking compatibility with other tank-mix partners before combining, since sulfur compounds can react with certain pesticides and micronutrient blends.
Applying ammonium thiosulfate during active vegetative growth, when nitrogen and sulfur demand are both rising, gets the most benefit from a single application compared to applying it very early or very late in the season.