Growing Sugarcane in Bihar

Updated 2026-07-13 · Region guide

Bihar sits in the Middle Gangetic Plains with humid subtropical and fertile alluvium. Fertile Gangetic plains — a big rice, wheat, maize and potato state. Here's how sugarcane — a Autumn & spring planting crop — fits, and how to grow it well here.

Is Bihar good for growing sugarcane?

When to sow sugarcane in Bihar

Sow in autumn Oct–Nov; spring Feb–Mar and harvest around 12–14 months later. The crop takes about 10–18 months. In Bihar's humid subtropical, the window matters more than anything else you do: ~1200 mm rainfall and canal + tubewell + monsoon mean a late Autumn & spring planting sowing runs sugarcane into the wrong weather at its most sensitive stage.

Where sugarcane actually grows in Bihar

The north-Bihar Champaran tract — West Champaran (Bettiah, Bagaha, Narkatiaganj), East Champaran (Motihari), Gopalganj, Siwan and Saran — extending into Muzaffarpur, Sitamarhi, Samastipur, Begusarai and Darbhanga. The soil is calcareous alluvium, which is Bihar's distinguishing agronomic fact: free lime, high pH and chronic zinc and iron shortfalls that cap cane yield no matter how much nitrogen you add. Tubewells plus the Gandak canal, with real flood and waterlogging exposure along the Gandak and Burhi Gandak.

Where it is sold: Bihar's sugar industry is a shadow of what it was — of roughly 28 mills, only around a third still crush. The working ones cluster in Champaran and Gopalganj: Harinagar, Narkatiaganj, Bagaha, the HPCL Biofuels units at Sugauli and Lauriya, and Sasamusa in Gopalganj. Bihar declares a State Advised Price, but the closure of the Riga mill in Sitamarhi — leaving growers with crores in unpaid dues — is the story every Bihar cane farmer knows. With fewer mills running, haulage distances are longer and parchi is tighter, which is why gur and khandsari units across Champaran take a large share of the crop for immediate cash.

The local risk to plan for: You can lose the crop after you have grown it. Fewer working mills means your cane may have no buyer within economic haulage distance, and Bihar's arrears record — Riga being the worst case — means even a delivered crop is not a paid crop. On top of that, the Gandak belt floods: cane standing in water for more than a few days rots at the stubble and the ratoon never recovers.

Best sugarcane varieties for Bihar

Grown in Bihar:

• Co 0238 — still widely planted but red rot has reached Bihar; do not expand it in the eastern districts
• CoP 9301 — a Pusa release bred for the Bihar calcareous belt, early maturing
• CoP 112 — Pusa, mid-late, suited to north Bihar's waterlogging-prone tract
• BO 154 — from Bihar's own long-running BO series at the Sugarcane Research Institute, Pusa
• CoLk 94184 — early, still recommended for the state's early crushing slot

Confirm the variety is notified for Bihar — on fertile alluvium under canal + tubewell + monsoon, a variety bred for a different zone will underperform whatever the seed packet claims. Your Bihar KVK or agriculture officer holds the current shortlist.

Typical yield & price

Typical yield here is around 250–350 quintal/acre. The government MSP is FRP ~₹340/quintal; local mandi rates vary, so check YieldAI for today's live Bihar price.

Common problems in Bihar

The pests and diseases to scout for:

• Red rot — reached Bihar with Co 0238; on the waterlogged Gandak belt it moves faster because standing water spreads the spores between clumps
• Top borer — heavy pressure in Champaran, especially on spring-planted cane; dead heart with a red midrib tunnel is the tell
• Pyrilla — the classic Gangetic leafhopper; leaves go pale with sooty mould from the honeydew. Before you spray, look for the Epiricania parasite — white waxy cocoons on the leaf undersides. If it is present, spraying will destroy the free control you already have
• Stubble and root rot after flooding — cane that stood in water goes soft at the base and the ratoon fails; plan the ratoon around it rather than hoping

humid subtropical conditions shape which of these bite hardest each season — scout early and act while a problem is small. YieldAI can identify a pest or disease from a photo of your crop.

Key practices

• Autumn planting with an intercrop — potato, lentil, mustard or garlic in the inter-row — is the best cash-flow answer in a state where the mill may pay late or not at all
• Correct zinc and iron on this calcareous soil. Yellowing between the veins of young leaves is not a nitrogen problem here and more urea will not fix it — get a soil test through your KVK and correct the micronutrient
• Plant in trenches and keep drainage channels open on the Gandak belt; a few days of standing water is the difference between a ratoon and a replant
• Before you plant, confirm the mill is actually crushing this season and check its arrears record. If it is doubtful, size your area to what a gur or khandsari unit can absorb