Tapioca (Cassava)

Water

Rain falls about 3 irrigations (5 cm each) short in a normal year, so it's risky without water.

Needs about 760 mm of water here in its growing months. Rain gives about 640 mm it can use in a normal year, and 510 mm in a dry year.

Temperature

Grows best at 20–29 °C on average, and survives 10–35 °C.

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

• Jun 31 °C / 20 °C
• Jul 28 °C / 21 °C
• Aug 27 °C / 20 °C
• Sep 27 °C / 19 °C
• Oct 25 °C / 14 °C (outside its best range)
• 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 (outside its best range)
• Apr 30 °C / 16 °C
• May 32 °C / 19 °C
• Jun 31 °C / 20 °C

Nights in December can bring frost. When frost is forecast, water the field lightly in the evening.

Soil

Soil for Tapioca (Cassava): 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 5.5–8.0.

Money

Yield: about 149 quintals an acre, the typical figure across India (no figures for your state).

On rain alone it gets about 84% of the water it needs, so the money here is worked at 84% of this yield.

Mandi price through the year (December 2025–November 2026): about ₹3,000 a quintal across India's mandis.

This week: about ₹3,500 a quintal, the middle of 70 mandis across India (latest 13 Nov). At that price an acre would leave about ₹1.9 lakh a year after typical costs.

Prices swing a lot from year to year, so income can be well above or below this range.

Prices are usually best in September.

Typical costs are about ₹2.4 lakh an acre: about half of what a usual harvest earns (2023–2025), as in farm cost surveys. They are spent whatever the harvest.