What is IIRR and when was it founded?

IIRR — the ICAR–Indian Institute of Rice Research — is the Indian Council of Agricultural Research (ICAR)'s nodal institute for basic, strategic and applied research on rice, the staple crop for roughly two-thirds of India's population. The institute traces its lineage to the All India Coordinated Rice Improvement Project (AICRIP), launched in 1965 at Hyderabad as one of ICAR's earliest multi-location crop research networks. AICRIP was upgraded to the Directorate of Rice Research (DRR) in 1975, and DRR was in turn elevated to a full ICAR Institute — the Indian Institute of Rice Research (IIRR) — in 2014. IIRR reports to ICAR under the Department of Agricultural Research and Education (DARE), Ministry of Agriculture & Farmers Welfare, Government of India.

What is AICRIP and why is it India's largest crop coordinated project?

AICRIP — the All India Coordinated Rice Improvement Project — is the multi-location varietal and agronomy trial network for rice, coordinated by IIRR Hyderabad. Launched in 1965, AICRIP is the oldest and largest of ICAR's All-India Coordinated Research Projects on crops, with 46+ funded main centres and voluntary centres distributed across State Agricultural Universities (SAUs), ICAR institutes and state agriculture departments spanning every major rice-growing agro-climatic zone — from the Cauvery delta and Krishna–Godavari basin to the Indo-Gangetic plains, the Brahmaputra valley, the coastal saline tracts and the Eastern Ghats uplands. Every candidate rice variety and hybrid released in India passes through AICRIP's multi-location Initial Varietal Trial (IVT) and Advanced Varietal Trial (AVT) stages before Central Varietal Release Committee (CVRC) notification.

Which rice varieties has IIRR released?

IIRR and its AICRIP partner centres have released a large portfolio of rice varieties over five decades. Flagship IIRR-lineage releases include Improved Samba Mahsuri (a bacterial-blight-resistant version of the popular fine-grain Samba Mahsuri, developed by marker-assisted introgression of the Xa21 / xa13 / Xa5 blight-resistance genes), DRR Dhan 42, DRR Dhan 44, DRR Dhan 45 (a zinc-biofortified variety released under the HarvestPlus programme — one of the world's first publicly-bred zinc-biofortified rice varieties, intended to tackle micronutrient malnutrition), DRR Dhan 48, DRR Dhan 50 and DRR Dhan 58 (a drought-tolerant release for rainfed uplands). IIRR also coordinates the release of hybrid rice through its Hybrid Rice section.

What is IIRR's role in Direct Seeded Rice (DSR) and water-saving rice cultivation?

IIRR is one of the principal ICAR institutes promoting Direct Seeded Rice (DSR) as a water-saving alternative to conventional transplanted puddled rice — the most water-intensive practice in Indian agriculture. DSR skips nursery raising and puddling: seed is drilled directly into a prepared field, cutting water requirement, labour and methane emissions. IIRR has developed DSR-suitable varieties, weed-management packages (DSR's main constraint is early weed competition) and mechanised planter recommendations. Beyond DSR, IIRR also works on the System of Rice Intensification (SRI), Alternate Wetting and Drying (AWD), aerobic rice and rice-fallow pulses — all approaches that reduce the water and energy footprint of Indian rice cultivation.

How does IIRR differ from NRRI Cuttack?

IIRR (Hyderabad) and NRRI (National Rice Research Institute, Cuttack, Odisha) are the two ICAR flagship institutes for rice, and they are complementary rather than duplicative. IIRR, sitting on the semi-arid Deccan plateau, is the coordinator of AICRIP and the pan-India varietal pipeline, with strong programmes on irrigated rice, hybrid rice, DSR, zinc biofortification and rice-fallow pulses. NRRI Cuttack, situated on the humid east coast of Odisha, focuses on the eastern-India rice ecosystems — deep-water and flood-prone rice, coastal saline rice, tribal upland rice, and rainfed shallow-lowland rice. Between them, IIRR and NRRI cover the full range of Indian rice ecologies: irrigated, upland, rainfed lowland, flood-prone, deep-water and coastal saline.

How does IIRR's work connect to NFSM–Rice, MSP paddy procurement and India's rice export leadership?

IIRR is the R&D pipeline that feeds India's rice-focused Central schemes. Varieties released via AICRIP become the recommended-variety list for the rice sub-mission of the National Food Security Mission (see /nfsm), which funds state-level demonstrations and seed distribution. Paddy is the single largest commodity procured at Minimum Support Price (see /msp) by the Food Corporation of India and state procurement agencies — so higher-yielding, disease-resistant IIRR-lineage varieties directly influence the volume that enters MSP-backed procurement and the central buffer stock. On the export side, India has been the world's largest rice exporter for over a decade (basmati and non-basmati combined), and IIRR-lineage varieties contribute to the non-basmati export basket that goes to Africa, the Middle East and South-East Asia through APEDA-notified exporters.

IIRR — ICAR–Indian Institute of Rice Research, Rajendranagar, Hyderabad: India's Nodal ICAR Institute for Rice, Coordinator of AICRIP, and Home of the DRR Dhan and Improved Samba Mahsuri Varieties

The ICAR–Indian Institute of Rice Research (IIRR), headquartered at Rajendranagar, Hyderabad 500030, Telangana, is the Indian Council of Agricultural Research (ICAR)'s nodal institute for basic, strategic and applied research on rice— the staple foodgrain of roughly two-thirds of India's population and the single largest crop by cultivated area (roughly 45 million hectares) and by production (approximately 130 million tonnes a year). IIRR traces its lineage to the All India Coordinated Rice Improvement Project (AICRIP), launched at Hyderabad in 1965 as one of ICAR's earliest multi-location crop research networks; AICRIP was upgraded to the Directorate of Rice Research (DRR) in 1975, and DRR was in turn elevated to a full ICAR Institute — the Indian Institute of Rice Research (IIRR) — in 2014. IIRR reports to ICAR under the Department of Agricultural Research and Education (DARE)of the Ministry of Agriculture & Farmers Welfare, and is the R&D pipeline that feeds rice varieties and packages into the rice sub-mission of the National Food Security Mission (NFSM), the paddy leg of Minimum Support Price procurementand India's non-basmati rice export basket.

At a glance

Body type: Central research institute of the Indian Council of Agricultural Research (ICAR).
Founded: 1965 as the All India Coordinated Rice Improvement Project (AICRIP); upgraded to the Directorate of Rice Research (DRR) in 1975; elevated to Indian Institute of Rice Research (IIRR) in 2014.
Headquarters: Rajendranagar, Hyderabad 500030, Telangana — inside the Rajendranagar agri-institutes cluster (PJTSAU, NIPHM, NAARM, MANAGE) and a short distance from ICRISAT, Patancheru.
Parent ministry: Ministry of Agriculture & Farmers Welfare, Government of India (via DARE / ICAR).
Mandate: basic, strategic and applied research on rice — varietal improvement, hybrid rice, biotechnology, crop production, crop protection, plant physiology, socio-economic research and coordination of the national rice research network.
National coordinating role: lead ICAR institute for AICRIP (All India Coordinated Research Project on Rice) — India's largest crop coordinated project with 46+ funded and voluntary centres across State Agricultural Universities and ICAR institutes.
Rice's importance in India: staple for ~65% of the population; grown on ~45 million hectares; India is the world's 2nd-largest producer (~130 million tonnes a year) and the world's largest exporter (basmati + non-basmati combined).
Flagship varieties (IIRR / AICRIP lineage): Improved Samba Mahsuri, DRR Dhan 42, DRR Dhan 44, DRR Dhan 45 (zinc-biofortified, HarvestPlus), DRR Dhan 48, DRR Dhan 50, DRR Dhan 58 (drought-tolerant), plus a portfolio of AICRIP-notified hybrids.
Sister institute: ICAR-NRRI (National Rice Research Institute), Cuttack, Odisha — the east-coast complement to IIRR, focused on rainfed lowland, deep-water, flood-prone and coastal saline rice.
Website: icar-iirr.org.

Origins — from AICRIP 1965 to DRR 1975 to IIRR 2014

IIRR's institutional history is inseparable from the story of the All India Coordinated Rice Improvement Project (AICRIP). AICRIP was constituted in 1965 at Hyderabad by ICAR as one of the very first crop-specific all-India coordinated networks — designed to run parallel, harmonised varietal and agronomy trials across the country's wildly different rice-growing agro-climatic zones. In its first decade AICRIP proved so central to India's rice self-sufficiency agenda — driving the Green Revolution's rice component alongside IRRI-derived semi-dwarf lines and Indian breeding stock — that ICAR upgraded AICRIP to a full Directorate of Rice Research (DRR) in 1975, giving it institutional standing to release varieties in its own name (the "DRR Dhan" series carries this legacy). Under the 2014 restructuring of ICAR that promoted several Directorates to full Institutes, DRR was elevated to the Indian Institute of Rice Research (IIRR), and continues today as both a research institute in its own right and the coordinator of the AICRIP network.

Location — the Rajendranagar agri-institutes cluster

IIRR sits on the Rajendranagarcampus in south-west Hyderabad, part of one of India's densest concentrations of agricultural research and training institutions. The immediate neighbourhood houses the Professor Jayashankar Telangana State Agricultural University (PJTSAU) — the successor to the erstwhile ANGRAU for Telangana — the National Institute of Plant Health Management (NIPHM), the National Academy of Agricultural Research Management (NAARM), the National Institute of Rural Development and Panchayati Raj (NIRDPR) and MANAGE. The ICRISAT campus at Patancheru is a short drive away. This clustering gives IIRR continuous working access to state extension officers under training, plant-health specialists, agricultural-research managers and the CGIAR interface on rice-fallow pulses — a set of externalities that few other ICAR institutes enjoy.

Research divisions

IIRR is organised into research divisions and sections that between them cover the full rice value chain from genotype to farmer income:

Crop Improvement — conventional and molecular breeding for yield, grain quality, disease and insect resistance, abiotic-stress tolerance (drought, submergence, salinity, heat) and biofortification; the base for Improved Samba Mahsuri and the DRR Dhan varietal series.
Hybrid Rice — parental-line development, hybrid seed-production technology and multi-location evaluation of public and private hybrids under AICRIP.
Crop Production — agronomy, nutrient management, water management, weed management, Direct Seeded Rice (DSR), System of Rice Intensification (SRI), Alternate Wetting and Drying (AWD), aerobic rice, and rice-fallow pulses in collaboration with ICRISAT.
Crop Protection — plant pathology, entomology and nematology; work on rice blast, bacterial leaf blight, sheath blight, brown planthopper, stem borer, gall midge and rice tungro virus.
Plant Physiology and Biochemistry — photosynthesis efficiency, source-sink dynamics, drought physiology, heat tolerance and grain-filling under climate stress.
Biotechnology — marker-assisted selection, gene-editing (regulatory-permitted work), genomic selection and molecular characterisation of the DRR/IIRR germplasm collection.
Social Sciences and Transfer of Technology — rice economics, adoption studies, Farmer FIRST, TSP/SCSP outreach in tribal Telangana and Andhra Pradesh villages, and IIRR's farmer-training programmes.

AICRIP — India's largest crop coordinated project

The All India Coordinated Research Project on Rice (AICRIP), coordinated by IIRR Hyderabad, is the multi-location varietal, hybrid and agronomy trial network that underwrites every rice release in India. AICRIP is the oldest and largest of ICAR's crop-specific All-India Coordinated Research Projects, with 46+ funded main centres and voluntary centres spanning every major rice-growing agro-climatic zone:

The Indo-Gangetic plain — Punjab, Haryana, Uttar Pradesh, Bihar, West Bengal.
The Krishna–Godavari and Cauvery deltas — Andhra Pradesh, Telangana, Tamil Nadu, coastal Karnataka.
The Brahmaputra valley and North-East hills — Assam, Manipur, Meghalaya, Nagaland, Arunachal Pradesh.
The Eastern Ghats and Chhotanagpur plateau uplands — Odisha, Chhattisgarh, Jharkhand.
The coastal saline tracts — Sundarbans (West Bengal), coastal Odisha, coastal Kerala.
The rainfed shallow-lowland belt and the flood-prone / deep-water rice tracts (with NRRI Cuttack).

Every candidate rice variety or hybrid — public or private — that seeks national release passes through the AICRIP Initial Varietal Trial (IVT) and Advanced Varietal Trial (AVT) stages under IIRR coordination before the Central Varietal Release Committee (CVRC) notifies it for cultivation. AICRIP data also feeds into the state-level State Varietal Release Committee (SVRC) recommendations and the recommended-variety lists of the NFSM–Rice sub-mission.

Flagship varieties — Improved Samba Mahsuri and the DRR Dhan series

IIRR (and its DRR predecessor) has released, or jointly released via AICRIP, a large portfolio of rice varieties. Among the most influential:

Improved Samba Mahsuri— a bacterial-blight-resistant version of the popular fine-grain traditional Samba Mahsuri variety, developed by marker-assisted introgression of three bacterial-blight resistance genes (Xa21, xa13 and Xa5) into the Samba Mahsuri genetic background. A landmark release both for its economic impact — Samba Mahsuri is a widely traded market-preferred grain across Andhra Pradesh, Telangana, Karnataka and Tamil Nadu — and as one of India's early success stories of marker-assisted breeding at scale.
DRR Dhan 42 and DRR Dhan 44 — high-yielding irrigated-ecosystem releases in the DRR Dhan series.
DRR Dhan 45 — a zinc-biofortified rice variety released under the international HarvestPlus programme; one of the first publicly bred zinc-biofortified rice varieties in the world, aimed at addressing zinc-deficiency-linked micronutrient malnutrition through the everyday staple.
DRR Dhan 48 and DRR Dhan 50 — further releases in the irrigated ecosystem with improved yield and grain quality traits.
DRR Dhan 58 — a drought-tolerant release for rainfed uplands and drought-prone rice ecosystems.
Hybrid rice— IIRR's Hybrid Rice section coordinates the public-sector hybrid rice programme, releases public-bred hybrids and evaluates private-sector hybrids under AICRIP.

Elite IIRR varieties enter the state seed chain through the Mega Seed Project on Rice (coordinated by IIRR), state seed corporations, private seed companies (via ITMU licensing) and Farmer Producer Organisations, and are the recommended-variety backbone of NFSM–Rice state action plans.

Direct Seeded Rice, SRI and water-saving rice

Conventional puddled transplanted rice is the single most water-intensive practice in Indian agriculture — 3,000–5,000 litres of water are used per kilogram of rice produced under classic puddling. IIRR is one of the principal ICAR institutes driving the transition to water-saving rice systems:

Direct Seeded Rice (DSR)— seed is drilled directly into a non-puddled field, eliminating nursery raising and puddling. Cuts water requirement (often 20–30%), labour and methane emissions. IIRR has developed DSR-suitable varieties (with improved early-vigour and anaerobic germination), integrated weed-management packages (DSR's major constraint) and mechanised planter recommendations.
System of Rice Intensification (SRI) — wider spacing, younger seedlings, alternate wetting-and-drying and organic-nutrient-heavy management, evaluated by IIRR across AICRIP centres.
Alternate Wetting and Drying (AWD) — controlled drainage-and-reflood cycles in irrigated rice; substantial water savings without yield penalty.
Aerobic rice — rice grown as an upland crop without ponded water, for water-scarce or peri-urban systems.
Rice-fallow pulses — introducing pulses (chickpea, black gram, lentil) into the winter-fallow phase after kharif rice in eastern India — an IIRR–ICRISAT collaboration that boosts protein supply and soil nitrogen without disturbing the kharif rice cycle.

Extension, TSP/SCSP outreach and Farmer FIRST

IIRR's Social Sciences and Transfer of Technology division runs a substantial extension footprint that complements the state extension systems and the KVK network:

Farmer FIRST — the ICAR framework that institutionalises farmer participation in on-farm research; IIRR runs Farmer FIRST clusters in rice-growing districts of Telangana and Andhra Pradesh.
Tribal Sub-Plan (TSP) and Scheduled Castes Sub-Plan (SCSP) outreach — IIRR-led interventions in tribal villages of Telangana and Andhra Pradesh, supplying quality rice seed, agronomy training and post-harvest support in constituency clusters mandated under the TSP/SCSP earmarking of ICAR budgets.
Farmer training and farmer melas — regular training programmes and technology-transfer days at the Rajendranagar campus, on-station demonstration plots and adopted-village programmes.
Extension through the KVK network — IIRR technologies flow to district Krishi Vigyan Kendras via ICAR-ATARI Zone X (Hyderabad), which then run On-Farm Testing (OFT) and Frontline Demonstrations (FLD) of IIRR-recommended packages.

IIRR in India's wider rice ecosystem

Rice touches almost every part of Indian agricultural policy — food security, price support, exports, water use and climate policy — so IIRR sits at the centre of a dense ecosystem of complementary institutions:

ICAR-NRRI (National Rice Research Institute), Cuttack, Odisha: the other ICAR flagship rice institute, focused on the eastern-India rice ecologies — deep-water and flood-prone rice, coastal saline rice, tribal upland rice and rainfed shallow-lowland rice. Between IIRR (Hyderabad) and NRRI (Cuttack), ICAR covers the full range of Indian rice ecosystems.
ICAR-IARI New Delhi: the ICAR flagship crop-sciences Deemed University, source of the Pusa Basmati series (Pusa Basmati 1121, Pusa Basmati 1509, Pusa Basmati 1718 and successors) that dominates India's basmati rice export basket. IIRR and IARI are complementary on the non-basmati / basmati divide.
NFSM — National Food Security Mission: the Centrally Sponsored Scheme that funds state action plans for rice, wheat, pulses, coarse cereals and nutri-cereals. IIRR / AICRIP-notified varieties form the backbone of the NFSM–Rice recommended-variety lists at the state level.
MSP — Minimum Support Price and paddy procurement: paddy is the single largest commodity procured at MSP by the Food Corporation of India and state procurement agencies — Punjab, Haryana, Chhattisgarh, Telangana, Odisha, Andhra Pradesh and West Bengal collectively procure tens of millions of tonnes of paddy every kharif season. Higher-yielding, blight-resistant IIRR-lineage varieties feed directly into the volumes that enter MSP procurement and the central buffer stock.
ICAR-CRIDA (Hyderabad): sister ICAR flagship institute on the same Rajendranagar–Santoshnagar Hyderabad axis, focused on rainfed / dryland agriculture. CRIDA and IIRR interlock on rainfed rice, drought-tolerant rice varieties for the uplands (DRR Dhan 58 is one such release) and rice-fallow pulses in eastern India.
NIPHM (Rajendranagar, Hyderabad):the plant-health training institute of the Department of Agriculture & Farmers Welfare, adjacent to IIRR. NIPHM operationalises IIRR's IPM packages for rice — blast management, brown-planthopper AESA-based IPM, stem borer pheromone trapping — through its residential courses for state officers.
NDDB, ICAR-NDRI, ICAR-IIHR:sister ICAR institutes on dairy, horticulture and — with IIRR — the wider constellation of ICAR's crop, animal and horticultural R&D institutions.
ICRISAT (Patancheru):the CGIAR institute in IIRR's Hyderabad neighbourhood — IIRR–ICRISAT collaborate especially on rice-fallow pulses (chickpea, pigeonpea) in eastern India's rice ecologies.
APEDA:the export-promotion authority for agricultural produce; oversees basmati and non-basmati rice exports. IIRR-lineage non-basmati rice varieties contribute to India's status as the world's largest rice exporter to Africa, the Middle East and South-East Asia.

How different stakeholders engage with IIRR

Rice farmers and FPOs:obtain IIRR-released varieties (Improved Samba Mahsuri, the DRR Dhan series) and hybrids through state seed corporations, NSC, private seed companies licensed by IIRR's ITMU, the Mega Seed Project on Rice and Farmer Producer Organisations. Farmer FIRST and TSP/SCSP villages get direct IIRR support; other farmers access IIRR packages through their district KVK.
State Agricultural Universities and rice-growing state departments: collaborate on AICRIP multi-location trials; propose candidate varieties into IVT/AVT; adopt IIRR-released varieties into state SVRC recommendations and NFSM–Rice state action plans.
Private seed companies and hybrid-rice players: license public IIRR varieties and parental lines from ITMU; evaluate their proprietary hybrids under AICRIP; and multiply certified seed under the state seed-certification agencies.
Central schemes: IIRR varieties and packages enter Central delivery through NFSM–Rice, MSP paddy procurement (see MSP) via FCI and the state procurement agencies, and — on the export side — through APEDA-notified non-basmati rice exports.
International partners: IIRR collaborates with IRRI (Los Baños, Philippines) on rice genomics, gene-editing and climate-resilient rice; with HarvestPlus on biofortification (DRR Dhan 45 zinc rice); and with ICRISAT on rice-fallow pulses.

IARI

ICAR-Indian Agricultural Research Institute, Pusa, New Delhi — sister ICAR flagship for the crop sciences; source of the Pusa Basmati series that complements IIRR's non-basmati rice portfolio.

NFSM

National Food Security Mission — the Centrally Sponsored Scheme whose NFSM–Rice sub-mission runs on IIRR / AICRIP-notified varieties and packages.

MSP

Minimum Support Price — paddy is the single largest commodity procured at MSP by FCI and state agencies. IIRR-lineage varieties drive procurement volumes.

CRIDA

ICAR-Central Research Institute for Dryland Agriculture, Hyderabad — sister ICAR flagship on rainfed farming; interlocks with IIRR on drought-tolerant rice (DRR Dhan 58) and rice-fallow pulses.

NIPHM

National Institute of Plant Health Management, Rajendranagar — plant-health training institute adjacent to IIRR; operationalises IIRR's rice IPM packages for state officers.

IIHR

ICAR-Indian Institute of Horticultural Research, Bengaluru — sister ICAR flagship for horticulture; IIRR is the rice counterpart in the ICAR institute portfolio.

NDRI

ICAR-National Dairy Research Institute, Karnal — sister ICAR Deemed University for dairy sciences in the ICAR flagship-institute portfolio.

NDDB

National Dairy Development Board — sits alongside IIRR in the Centre's rural / farm-sector institution constellation on the dairy side.

ATARI

Eleven ICAR zonal institutes coordinating KVKs — including ATARI Zone X (Hyderabad) that pushes IIRR technology to district KVKs across South India.

Universities & Research Institutes

Full directory of Indian SAUs, ICAR institutes and agricultural universities.

References

icar-iirr.org — ICAR-IIRR corporate portal: research divisions, AICRIP coordination, variety catalogue (DRR Dhan series and Improved Samba Mahsuri), Mega Seed Project on Rice, ITMU licensing, farmer resources and IIRR history from AICRIP (1965) through DRR (1975) to IIRR (2014).
icar.org.in — Indian Council of Agricultural Research portal — parent institution of IIRR and coordinator of the AICRP system.
nfsm.gov.in — National Food Security Mission — the Central-scheme delivery envelope for IIRR / AICRIP-notified rice varieties through the state action plans.
cacp.dacnet.nic.in — Commission for Agricultural Costs and Prices — recommends the paddy MSP each kharif season that underpins procurement of IIRR-lineage varieties.
harvestplus.org — HarvestPlus, the international biofortification programme under which the zinc-biofortified DRR Dhan 45 was released.
Press Information Bureau (PIB) — releases on IIRR variety notifications, AICRIP milestones and India's rice production and export performance.

Frequently asked questions

What is IIRR and when was it founded?: IIRR — the ICAR–Indian Institute of Rice Research — is the Indian Council of Agricultural Research (ICAR)'s nodal institute for basic, strategic and applied research on rice, the staple crop for roughly two-thirds of India's population. The institute traces its lineage to the All India Coordinated Rice Improvement Project (AICRIP), launched in 1965 at Hyderabad as one of ICAR's earliest multi-location crop research networks. AICRIP was upgraded to the Directorate of Rice Research (DRR) in 1975, and DRR was in turn elevated to a full ICAR Institute — the Indian Institute of Rice Research (IIRR) — in 2014. IIRR reports to ICAR under the Department of Agricultural Research and Education (DARE), Ministry of Agriculture & Farmers Welfare, Government of India.
Where is IIRR headquartered?: IIRR's main campus is at Rajendranagar, Hyderabad 500030, Telangana — part of the wider Rajendranagar agricultural-institutions cluster in south-west Hyderabad that also hosts the Professor Jayashankar Telangana State Agricultural University (PJTSAU), the National Institute of Plant Health Management (NIPHM), the National Academy of Agricultural Research Management (NAARM) and MANAGE. IIRR is a short distance from the ICRISAT campus at Patancheru. The Rajendranagar location gives IIRR direct working access to the semi-arid tropical rice systems of the Deccan plateau and to the ICRISAT–ICAR interface on rice-fallow pulses.
What is AICRIP and why is it India's largest crop coordinated project?: AICRIP — the All India Coordinated Rice Improvement Project — is the multi-location varietal and agronomy trial network for rice, coordinated by IIRR Hyderabad. Launched in 1965, AICRIP is the oldest and largest of ICAR's All-India Coordinated Research Projects on crops, with 46+ funded main centres and voluntary centres distributed across State Agricultural Universities (SAUs), ICAR institutes and state agriculture departments spanning every major rice-growing agro-climatic zone — from the Cauvery delta and Krishna–Godavari basin to the Indo-Gangetic plains, the Brahmaputra valley, the coastal saline tracts and the Eastern Ghats uplands. Every candidate rice variety and hybrid released in India passes through AICRIP's multi-location Initial Varietal Trial (IVT) and Advanced Varietal Trial (AVT) stages before Central Varietal Release Committee (CVRC) notification.
Which rice varieties has IIRR released?: IIRR and its AICRIP partner centres have released a large portfolio of rice varieties over five decades. Flagship IIRR-lineage releases include Improved Samba Mahsuri (a bacterial-blight-resistant version of the popular fine-grain Samba Mahsuri, developed by marker-assisted introgression of the Xa21 / xa13 / Xa5 blight-resistance genes), DRR Dhan 42, DRR Dhan 44, DRR Dhan 45 (a zinc-biofortified variety released under the HarvestPlus programme — one of the world's first publicly-bred zinc-biofortified rice varieties, intended to tackle micronutrient malnutrition), DRR Dhan 48, DRR Dhan 50 and DRR Dhan 58 (a drought-tolerant release for rainfed uplands). IIRR also coordinates the release of hybrid rice through its Hybrid Rice section.
What is IIRR's role in Direct Seeded Rice (DSR) and water-saving rice cultivation?: IIRR is one of the principal ICAR institutes promoting Direct Seeded Rice (DSR) as a water-saving alternative to conventional transplanted puddled rice — the most water-intensive practice in Indian agriculture. DSR skips nursery raising and puddling: seed is drilled directly into a prepared field, cutting water requirement, labour and methane emissions. IIRR has developed DSR-suitable varieties, weed-management packages (DSR's main constraint is early weed competition) and mechanised planter recommendations. Beyond DSR, IIRR also works on the System of Rice Intensification (SRI), Alternate Wetting and Drying (AWD), aerobic rice and rice-fallow pulses — all approaches that reduce the water and energy footprint of Indian rice cultivation.
How does IIRR differ from NRRI Cuttack?: IIRR (Hyderabad) and NRRI (National Rice Research Institute, Cuttack, Odisha) are the two ICAR flagship institutes for rice, and they are complementary rather than duplicative. IIRR, sitting on the semi-arid Deccan plateau, is the coordinator of AICRIP and the pan-India varietal pipeline, with strong programmes on irrigated rice, hybrid rice, DSR, zinc biofortification and rice-fallow pulses. NRRI Cuttack, situated on the humid east coast of Odisha, focuses on the eastern-India rice ecosystems — deep-water and flood-prone rice, coastal saline rice, tribal upland rice, and rainfed shallow-lowland rice. Between them, IIRR and NRRI cover the full range of Indian rice ecologies: irrigated, upland, rainfed lowland, flood-prone, deep-water and coastal saline.
How does IIRR's work connect to NFSM–Rice, MSP paddy procurement and India's rice export leadership?: IIRR is the R&D pipeline that feeds India's rice-focused Central schemes. Varieties released via AICRIP become the recommended-variety list for the rice sub-mission of the National Food Security Mission (see /nfsm), which funds state-level demonstrations and seed distribution. Paddy is the single largest commodity procured at Minimum Support Price (see /msp) by the Food Corporation of India and state procurement agencies — so higher-yielding, disease-resistant IIRR-lineage varieties directly influence the volume that enters MSP-backed procurement and the central buffer stock. On the export side, India has been the world's largest rice exporter for over a decade (basmati and non-basmati combined), and IIRR-lineage varieties contribute to the non-basmati export basket that goes to Africa, the Middle East and South-East Asia through APEDA-notified exporters.

The AICRIP (1965) → DRR (1975) → IIRR (2014) lineage, the Rajendranagar (Hyderabad 500030) headquarters, the divisional structure, the 46+ AICRIP centres, the flagship IIRR / DRR Dhan varietal releases (Improved Samba Mahsuri, DRR Dhan 42, DRR Dhan 44, zinc-biofortified DRR Dhan 45 under HarvestPlus, DRR Dhan 48, DRR Dhan 50, drought-tolerant DRR Dhan 58), the DSR / SRI / rice-fallow pulses portfolio and the IIRR–NRRI Cuttack division of labour draw on publicly available material on icar-iirr.org, icar.org.in, nfsm.gov.in and PIB releases. Divisional structure, current variety rosters, AICRIP centre counts and licensing terms are periodically revised — confirm current details on icar-iirr.org before licensing, admission or planting-material orders.