Distribution of Rhizobium (Tamil Nadu)

What is the Distribution of Rhizobium scheme?

Distribution of Rhizobium is a small input subsidy of the Agriculture and Farmers' Welfare Department, Government of Tamil Nadu. Rhizobium is a nitrogen-fixing bacterial culture used to treat legume seed before sowing, and the scheme makes it cheaper for farmers who grow pulses and oilseeds.

According to the scheme table published on the TNAU Agritech Portal, the assistance is 50 per cent of the cost of Rhizobium or Rs 100 per hectare, whichever is less. The rate appears twice in the department's list; once under the pulses programme, where the named beneficiaries are farmers raising seed farms with pulses crops, and once under the oilseeds programme as "Distribution of Rhizobium Packets", where it goes to all other farmers with preference to small and marginal farmers.

Alongside the subsidy, the department runs a straightforward supply operation: Azospirillum, Rhizobium and Phosphobacteria are each sold at Rs 6 per packet of 200 grams to all farmers in the state. Several districts, including Vellore, Viluppuram and Tenkasi, host departmental bio-fertiliser production units that manufacture the cultures and distribute them to Agricultural Extension Centres.

Why the state bothers with a Rs 100 per hectare subsidy. Rhizobium is one of the cheapest yield interventions available in pulses and groundnut. A properly nodulated legume crop fixes a substantial share of its own nitrogen requirement, which lowers urea use and improves soil nitrogen for the following cereal. The constraint has never been price, it is awareness and timely availability of a live culture that has not lost viability on a shelf. The subsidy exists mainly to push the packet into the farmer's hand at sowing time, which is the only moment it is useful.

Who is eligible, and who cannot apply?

You are eligible if:

• You are a farmer in Tamil Nadu growing a legume, pulses such as blackgram, greengram, redgram, cowpea, horsegram and bengalgram, or the legume oilseed groundnut.
• Under the pulses component, you are raising a seed farm with a pulses crop. This is the group the department names, and the benefit is expressly "subject to availability of funds".
• Under the oilseeds component, you are any other oilseed farmer, with preference to small and marginal farmers.
• You can produce a land record so the Rs 100 per hectare cap can be applied to a verified area.

You are not eligible, or cannot apply, if:

• You grow only non-legume crops. Rhizobium does not nodulate paddy, maize, millets, cotton or sugarcane. Cereal growers should ask instead for Azospirillum, supplied at the same Rs 6 per 200 grams.
• You have no land record and no way for the Assistant Agricultural Officer to certify the sown area.
• You are seeking a cash grant. This component pays for a physical input; it is not an income transfer, and at Rs 100 per hectare it was never designed as one.
• You bought the culture from a private dealer before approaching the department, in which case there is no departmental supply record to subsidise.

The department's standard reservations apply within the target: 24 per cent of benefits to SC and ST farmers and 20 per cent to women farmers or women farmers' groups.

How to apply for the Rhizobium subsidy

1. Visit the Assistant Agricultural Officer at the Agricultural Extension Centre serving your village, before you sow. Bring your chitta and adangal and Aadhaar card.
2. State the crop and the area. The officer records the legume you are sowing and the hectarage, which fixes both the number of packets and the Rs 100 per hectare ceiling.
3. Register a seed farm, if you are applying under the pulses component. Seed-farm growers are the named beneficiary group there, and registration is done through the same block office.
4. Collect the packets from the Agricultural Extension Centre or the departmental bio-fertiliser unit, paying only the subsidised balance. Check the manufacturing and expiry dates printed on the packet — a live culture has a short shelf life and an expired packet does nothing.
5. Treat the seed on the day of sowing. Mix the culture with the seed using a light jaggery or rice-gruel sticker, dry it in the shade, and sow the same day. Never mix Rhizobium directly with chemical fungicide or fertiliser.
6. Escalate if supply fails to the Deputy Agricultural Officer or the Assistant Director of Agriculture at block level, and then the Joint Director of Agriculture at district level.

What documents are required?

How the money works out in practice

At the department's own supply price of Rs 6 per 200 gram packet, the Rs 100 per hectare ceiling is generous rather than binding, it covers well over a dozen packets. In effect, the eligible farmer receives the culture needed for the season at or near zero net cost, and the 50 per cent rule only becomes the operative limit if the culture is sourced at a much higher commercial price.

Farmers usually take Rhizobium as part of a package for the same field. Under the pulses programme the department also lists bio-pesticides up to Rs 250 per hectare, gypsum at 50 per cent limited to Rs 750 per hectare, DAP spraying at 50 per cent or Rs 100 per hectare for two rounds, and micronutrient spray at 50 per cent or Rs 70 per hectare. Under the oilseeds programme the parallel items are gypsum at Rs 750 per hectare, bio-pesticides at Rs 250 per hectare and weedicides at Rs 500 per hectare. Asking for all of them in one visit is a far better use of a trip to the extension centre than asking for Rhizobium alone.

How to check the status of your request

There is no online tracker for this component. Ask the Assistant Agricultural Officer which consignment your packets have been booked against, and confirm with the Agricultural Extension Centre when the district bio-fertiliser unit will deliver stock. Because the culture is live and perishable, blocks generally receive it in batches timed to sowing rather than holding inventory.

Why requests fail

• Approached after sowing. Seed treatment is a pre-sowing operation; once the crop is in the ground the packet has no use that season.
• Non-legume crop. The single most common misunderstanding: Rhizobium is legume-specific.
• Stock exhausted or culture expired. Live cultures have short shelf lives and district production units supply in limited batches.
• No land record, so no verified hectarage.
• Funds exhausted, which the department's own wording anticipates by making the pulses component subject to availability of funds.

Where to raise a grievance

• Assistant Director of Agriculture, block level.
• Joint Director of Agriculture, district collectorate.
• Kisan Call Centre 1800-180-1551, the national farm advisory helpline.
• Tamil Nadu e-Sevai grievance portal, for a written petition with a reference number.

Bio-fertiliser packets are sold at a posted government rate. No middleman is required, and any charge above the posted rate should be reported to the block Assistant Director of Agriculture.