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Field crops

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Reasearch and Development

Simlaw SeedCompany recognizes the importance of research as the base and the backbone that propels its high quality products to meet the ever changing global food demand.To achieve this, the company invests a large capital outlay to cater for research and development of technologies, infrastructure and production of its superior products. The technical team is backed by qualified breeders, Agronomists and crop physiologists. Also the company has research fields located in different Agro-ecological regions namely Thika, Njabini, Kiboko, Loitoktok, Bungoma and Kitale.

The department has two main sections namely

  1. Research section
  2. Production section

Research sections
As a driver of the other activities of the company, the section undertakes the following:

  1. Crop development
  2. Variety purity maintenance
  3. Variety evaluation.
  4. Crop registration.
  5. Basic seed increase

a) Crop development.
This entails development of new superior varieties that surpasses the current commercial ones in the market as per as the competitive traits are concerned.Different methods of breeding are employed depending on crop and the traits of choice.

To achieve this objective, the breeders links up and collaborates with other local institutions like Kenya Agricultural Research Institute (KARI), Nairobi University and Egerton University. Internationally the department links up with organizations like African Vegetable Research and Development Centre (AVRDC) among others.

b) Varietal purity maintenance
This involves maintenance of the purity of the varieties that have been developed by the company to ensure its original status is maintained as pre-scribed in the descriptor. These varieties include beans:-Wairimu Dwarf, Garden pea:- peas plum and green feast. Collard- Simlaw select, cowpea- Ken Kunde1 (KK1), tomato:-kentom and riogrande.  indigenous vegetables, amaranthus, spider plant, crotalaria, jews mallow, common night shade and giant night shade.

c) Variety evaluation
This involves sourcing of vegetable crops that are not produced locally. The crops include: cabbage, onion, leeks, broccoli, cauliflower, beet roots, radish, turnip, spinach and lettuce.
The company collaborates with internationally renowned vegetable breeders for tropical region who supply seed samples for evaluation. The samples together with top commercial varieties are put in a preliminary field trial according to their agro-ecological requirement. The successful candidates are advance for secondary evaluation in various parts of the country where the best are recommended for semi-commercialization and are put in demo sites for farmers to give their comments before full commercialization.

d) Crop registration
All the varieties developed by the company staff or with the collaborators are registered following the laid down procedures by KEPHIS under cap 320.
The legumes undergo National Performance Trial and Distinctiveness, Uniformity and Stability (DUS) evaluations before they are released by Ministry of Agriculture and registered as a variety in Kenya.

These varieties are also registered under plant breeders rights (PBR) for the company to ensure protection and get exclusive control of its seed production and marketing

Basic Seed Increase

Basic seed production of our legumes namely beans, cow peas and green grams undergoes vigorous well laid down procedures that ensures high standards of seed purity are achieved. The breeder seeds usually referred to as nuclear seeds undergo stage three stages of development:

Stage 1: Plant to row
Stage 2: Single plot
Stage 3: Bulk plot

In all these stages the observation is done by the company staff in conjunction with KEPHIS who at stage 3 provide the white label, depicting the seeds as breeder seeds.
The breeder seeds are planted to give pre-basic, and then basic classes.
These basic seeds are passed to production section for production of certified seed generation classes for marketing.


This is aimed at increasing the seeds through various stages of seed production classes namely CG1, CG2 and CG3. It involves the following:

  1. Seed Grower selection and recruitment
  2. Training
  3. Seed delivery
  4. Field inspections
  5. Seed collection and delivery
Contact Us


General Manager
Kijabe Street - Near Globe Cinema Round about
P.O. Box 40042,

Tel: +254 (20) 2215067 / 83
        +254 (20) 2602191 / 93

Fax: +254 (20) 316619

Mobile: 0722 - 200 545 / 0734 - 811 861

 PAYBILL NO: 833833



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