My Potato Farm Experiment: Vermicompost vs Chemical Fertilizer
Vikram Singh farms potatoes on alluvial soil near Prayagraj. Tired of rising DAP bills and soft tubers at the mandi, he ran a simple split-plot test: half the field on his usual chemical programme, half on Satva vermicompost with reduced chemical basal. Two seasons later, the results changed how he plans every rabi cycle.
Experiment Design
- Plot A (control): Standard urea + DAP programme.
- Plot B (organic-led): 2.5 tonnes/acre Satva vermicompost at planting + 30% reduced chemical basal.
- Same variety, irrigation, and pest schedule on both sides.
Season 1 Observations
Plot B showed darker canopy and more uniform tuber sizing at digging. Total weight was close to control—but Grade A share was higher on the organic-led side. Soil from Plot B crumbled better in hand tests (more friable, less crust).
Season 2: Biology Catches Up
With organic matter built in Season 1, Plot B matched control yield with lower urea top-dress. Vikram’s per-acre chemical spend dropped measurably. He credits slow-release nitrogen and better moisture retention during March heat spells.
"Chemicals gave green leaves fast. Vermicompost gave me soil I want to plant again," Vikram says.
Takeaways for UP Potato Growers
- Incorporate at planting—not surface dump after emergence.
- Soil test after Season 1 before cutting chemicals further.
- Pair with our NPK guide to set expectations.
Running your own trial? Order Satva Vermicompost for a split plot—we can suggest rates for your district.