Tapioca (Cassava)

Water

Rain is enough, even in a dry year.

Needs about 800 mm of water here in its growing months. Rain gives about 1,590 mm it can use in a normal year, and 1,100 mm in a dry year.

Heavy rain here can waterlog it. Grow it on raised beds or land that drains well.

Temperature

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

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

• Jun 27 °C / 20 °C
• Jul 27 °C / 21 °C
• Aug 27 °C / 21 °C
• Sep 27 °C / 20 °C
• Oct 27 °C / 19 °C
• Nov 24 °C / 14 °C (outside its best range)
• Dec 22 °C / 11 °C (outside its best range)
• Jan 21 °C / 9 °C (outside its best range)
• Feb 24 °C / 11 °C (outside its best range)
• Mar 27 °C / 14 °C
• Apr 29 °C / 17 °C
• May 28 °C / 19 °C
• Jun 27 °C / 20 °C

Months in orange are outside its best range.

Soil

Soil for Tapioca (Cassava): 7 out of 10 (okay).

Not in the score: salt, sulphur, zinc and 4 more.

• 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 59 quintals an acre, the typical figure in your state (your district's own figure looked wrong).

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 71 mandis across India (latest 13 Nov). At that price an acre would lose about ₹38,000 a year at 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.