KALRO Bean Varieties
Beans technologies developed for the various agricultural ecosystems
Rice Plantations
With improved varieties at the Kisumu Kibos irrigation scheme
Director Food Crops
During a Rice Farmer Field day at the KALRO Kibos Centre
KALRO Cereals
Improved varieties of cereals at the markatplace in Nairobi


A vibrant commercially viable rice, cotton and other natural fibre sector, propelled by Science, Technology and Innovation.

To contribute to increased productivity, commercialization and competitiveness of the rice, cotton and other natural fibre sector through generation and promotion of knowledge, information and technology that responds to client demands and opportunities.

Conduct Rice and Fibre Crops Research East of Rift Valley.

About the Centre
KARI- Mwea Tebere is located in Mwea Division, Kirinyaga South District, Kirinyaga county, Kenya. The Centre is 21 km South West of Embu town and about 112 km North East of Nairobi.  It lies on Latitude 0 37’ S and Longitude 37 20’ E at an elevation of 1159 m above sea level (ASL). The average rainfall is about 850 mm with a range of 500 - 1250 mm divided into long rains (March – June with an average of 450 mm) and short rains (Mid-October to December with an average of 350 mm). The rainfall is characterized by uneven distribution in total amounts, time and space. The temperature ranges from 15.6º C to 28.6º C with a mean of about 22ºC.

The centre has 16.8 hectares under research.

The centre has staff of 43 with 11 scientists 3 PhDs; 4 MScs; 4 BScs and 30 support staff.

The Centre achievement:
Development of cotton cultivars HART 89M, development of an integrated pest management of cotton
Developed and improved agronomic packages of cotton
Production of breeder seed for cotton HART 89M
Production of breeder seed for NERICA 1, 4, 10 and 11
Production of 22 tonnes of NERICA rice seeds
Two irrigated, 2 rain fed lowland varieties under National Performance Trials.
Motorisation of rice thresher and promotion of rice value added products.
Four Nutrient efficient varieties are undergoing National performance trials.

Rice Research Programme at KARI-Mwea  ongoing projects:
•    Develop, validate and disseminate appropriate crop management technologies for increased rice productivity and profitability in Kenya
•    Enhancing productivity and market linkages of rice at Mwea irrigation scheme
•    Rice post harvest management at Mwea
•    Rice promotion, nursery establishment and management.
•    Development of adapted and high yielding rice varieties with superior grain qualities for Central, Western and Coastal Kenya.
•    Development and validation of demand-driven rice varieties for enhanced yield under small scale farmers conditions in major rice producing regions of Central, western and

Regional international nursery for elite lines, Golden super rice evaluation
Converting Basmati 370 into hybrids with resistant to blast.
Tailor-made breeding and cultivation technology development in Kenya
Seed production programme

KnowledgeBank Crops

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    AfricaRice is one of the 15 international agricultural research Centers that are members of the CGIAR Consortium.

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    The choice of appropriate maize varieties for a given location is very important because every variety

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    Pollination occurs for many flowering plants, crops and non crops

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    Rice cultivation involves a series of processesto achieve the desirable product from landpreparation to planting/ sowing up to cropmaturity

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KALRO Value Chain

Guava variety KALRO B8
Maize KALRO Mtwapa



Kaptagat Road, Loresho,
P.O. Box 57811-00200, Nairobi
Safaricom: +254 722206986/722206988
Airtel: +254 733-333-223
Fibre Lines:  0709 104000-60 (Safaricom)
- 0730 707000-60 (Airtel)

Rice blast disease

Favorable conditions for disease development:

  • Node blast: Black-brown lesions on the node.  
  • Neck blast: Black or brown rot on the neck of the panicle.