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
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Weeds compete directly with the rice plants and reduce rice yield. Each 1 kg dry matter of weeds is equivalent to 1kg grain loss. Weeds cause most yield loss within the first 20- 50 days after crop establishment. Weeding after panicle initiation may also be important to prevent weeds shedding seeds in future crops.

Effective weed management
•    Plowing and harrowing in fallow should be undertaken at least 10-14 days apart or after rain.
•    Good land leveling reduces weed growth because most weeds have trouble germinating under water
•    Select  varieties which have early vigor
•    Use clean rice seed which is free of weed seeds.
•    Apply permanent water early - weeds cannot germinate under water.
•    First weeding begun within 2-3 weeks after establishment and the second in another 2-3 weeks.  Weed before fertilizer application.
•    Using herbicides. Identify the weed correctly and use the appropriate herbicide as recommended on the label.
•    Spray when the weeds are small
•    Pre-emergent herbicides apply after planting prior to establishment
•    Post emergent  herbicides apply after emergence being careful of crop damage
•    Herbicides are poisonous; if they are not used properly they can cause health and environment problems. Label them clearly and keep them out of children’s reach.
•    Always use protective clothing when spraying.
•    Do not wear raincoats as this increases sweating.

 

 For more information

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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    Pollination

    Pollination occurs for many flowering plants, crops and non crops

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    Rice

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

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    Sericulture

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Scientists

KALRO Value Chain

Beans
Maize
Cassava
Guava variety KALRO B8
Cassava
Chicken
Bees
Maize KALRO Mtwapa

KALRO Map

Contact

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

Rice blast disease

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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.