Tapioca (Cassava)

Water

Rain falls about 9 irrigations (5 cm each) short in a normal year, so it's risky without water.

Needs about 1,060 mm of water here in its growing months. Rain gives about 650 mm it can use in a normal year, and 410 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 35 °C / 26 °C (outside its best range)
• Jul 34 °C / 25 °C (outside its best range)
• Aug 33 °C / 25 °C
• Sep 33 °C / 24 °C
• Oct 32 °C / 23 °C
• Nov 29 °C / 21 °C
• Dec 29 °C / 19 °C
• Jan 30 °C / 19 °C
• Feb 32 °C / 20 °C
• Mar 35 °C / 22 °C
• Apr 37 °C / 25 °C (outside its best range)
• May 38 °C / 26 °C (outside its best range)
• Jun 35 °C / 26 °C (outside its best range)

Months in orange are outside its best range.

Soil

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

Not in the score: manganese.

• The pH here suits it.
• Many fields here are short of nitrogen, which it needs a lot.
• Most fields here are short of organic carbon.
• Most fields here are short of zinc.

Likes pH 5.5–8.0.

Money

Yield: about 151 quintals an acre, the typical figure in your state (your district's own figure looked wrong).

Rain gives it too little of the water it needs, so there's no income figure on rain alone: grow it only with irrigation.

Mandi price through the year (December 2025–November 2026): about ₹3,000 a quintal at mandis in your district.

This week: about ₹3,750 a quintal, the middle of 7 mandis in your state (latest 13 Nov).

Prices are usually best in November.

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.