Sweet Potato

Water

Rain is enough, even in a dry year.

Needs about 440 mm of water here in its growing months. Rain gives about 650 mm it can use in a normal year, and 560 mm in a dry year.

Temperature

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

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

• Jul 32 °C / 25 °C (outside its best range)
• Aug 32 °C / 25 °C (outside its best range)
• Sep 32 °C / 25 °C (outside its best range)
• Oct 32 °C / 23 °C
• Nov 30 °C / 18 °C

Months in orange are outside its best range.

Soil

Soil for Sweet Potato: 8 out of 10 (good).

• The pH here suits it, though not most crops.
• Many fields here are short of nitrogen, which it needs a lot.
• Most fields here are short of organic carbon.

Likes pH 5.0–7.0.

Money

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

Mandi price at last season's harvest (December 2025): about ₹2,300 a quintal across India's mandis.

This week: about ₹3,200 a quintal, the middle of 73 mandis across India (latest 13 Nov). At that price an acre would leave about ₹68,000 a season after typical costs.

Prices are usually best in September.

Typical costs are about ₹55,000 an acre: about half of what a usual harvest earns (2023–2025), as in farm cost surveys. They are spent whatever the harvest.