Sweet Potato

Water

Rain falls about 2 irrigations (5 cm each) short in a normal year, so it's risky without water.

Needs about 250 mm of water here in its growing months. Rain in its months gives about 30 mm it can use in a normal year (0 mm in a dry one), and the soil holds about 170 mm from the monsoon at sowing.

Temperature

Grows best at 18–28 °C on average, and survives 10–38 °C.

Here, in its growing months (day / night):

• Nov 21 °C / 10 °C (outside its best range)
• Dec 18 °C / 6 °C (outside its best range)
• Jan 16 °C / 5 °C (outside its best range)
• Feb 19 °C / 7 °C (outside its best range)
• Mar 24 °C / 12 °C

Nights in December can bring frost while the plants are young. Sow a little later, or cover the seedlings on cold nights.

Soil

Soil for Sweet Potato: 7 out of 10 (okay).

• The pH here suits it.
• Many fields here are short of nitrogen, which it needs a lot.
• Many fields here are short of potassium, which it needs a lot.

Likes pH 5.0–7.0.

Money

Yield: about 38 quintals an acre, the typical figure across India (no figures for your state).

On rain alone it gets about 79% of the water it needs, so the money here is worked at 79% of this yield.

Mandi price at last season's harvest (March 2026): about ₹2,200 a quintal across mandis in your state.

Prices are usually best in November.

Typical costs are about ₹57,000 an acre: about half of what a usual harvest earns (2024–2026), as in farm cost surveys. They are spent whatever the harvest.