Agricultural gypsum Calculator
Scale agricultural gypsum (18.6% S) to your field, see the S delivered, bag count and cost from the recommended 250 kg/ha rate.
Gypsum supplies both calcium and 18–19% sulphur without changing soil pH. For groundnut, apply at pegging in the pod zone; for oilseeds and pulses, apply basal. Distinct from lime, which raises pH.
Indicative planning figures based on published research averages. Local soil tests, varieties and weather change actual requirements — confirm with your agronomist or extension officer.
Farmers and soil-test labs use the free Agricultural gypsum Calculator to turn a per-hectare agricultural gypsum recommendation into the exact quantity, bag count and cost for their own field in seconds.
About Agricultural gypsum Calculator
Gypsum is the cheapest way to supply sulphur — the fourth major nutrient — plus calcium, without changing soil pH (unlike lime). Oilseeds, pulses and groundnut respond strongly. This tool scales the right rate for your crop, from 200 kg/ha general to 400 kg/ha at groundnut pegging, and reports the sulphur delivered.
How to use Agricultural gypsum Calculator
- 1Enter your field area and unit.
- 2Pick the soil rating or situation that matches your soil test.
- 3Read the agricultural gypsum quantity, S delivered, bags and cost, then follow the application note.
Why use Agricultural gypsum Calculator?
- ✓Scales the recommended agricultural gypsum rate to hectares, acres or bigha
- ✓Shows the actual S nutrient delivered, not just product weight
- ✓Estimates cost and bag count so you can budget the purchase
- ✓Free, instant and fully in-browser — works offline in the field
Frequently asked questions
How much agricultural gypsum per acre?+
Oilseeds/pulses (S nutrition): 250 kg/ha (101.2 kg/acre); Groundnut pegging: 400 kg/ha (161.9 kg/acre); General crop: 200 kg/ha (80.9 kg/acre). Gypsum supplies both calcium and 18–19% sulphur without changing soil pH.
How much S does agricultural gypsum contain?+
Agricultural gypsum carries about 18.6% S, so each 100 kg supplies 18.6 kg of S. The calculator multiplies your applied quantity by this to show the true nutrient delivered.
When and how should I apply it?+
Gypsum supplies both calcium and 18–19% sulphur without changing soil pH. For groundnut, apply at pegging in the pod zone; for oilseeds and pulses, apply basal. Distinct from lime, which raises pH.
Is the tool free and private?+
Yes — free, no sign-up, and all calculation runs in your browser, so it works offline in the field and your data never leaves the device.
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