Best Greenhouses in Kenya
Greenhouse construction in Kenya involves the construction of both wooden greenhouses and metallic greenhouses for the purpose of crop production. It is a very lucrative venture with very high income returns for farmers if embraced. Greenhouse construction in Kenya requires top notch skills . Grekkon Limited is a one of largest and most trusted greenhouse construction company in Kenya that carries out professional greenhouse construction. Greenhouse tomato farming is carried out in almost all parts of the country.
Ideal crops for greenhouse farming.
Tomato is by far the main crop that can be grown in a greenhouse. It accounts for over 80% of all crops grown in greenhouses by small holder farmers. Once planted, first harvest is expected after 75 to 90 days and will continue for the next 6 months on good management.
The main varieties are the coloured ones which fetch very good incomes. Yellow, red and orange capsicums are the most common and account for about 10% of small holder greenhouse farmers.
These are grown for the specialty market.
This includes Asian line of specialty crops such as basil, duthi and karella.
Mainly grown for export market, they include roses, carnations etc. This is done by large scale farmers in Naivasha, Nakuru, Timau and Kajiado.
These are made of galvanized or non galvanized steel. The greenhouse maybe vented or tunnel type depending on the area. All Grekkon greenhouses are raised high to allow for proper crop ventilation.
They are constructed using poles and other locally available materials.
Greenhouse construction materials in Kenya
|Greenhouse Type||Construction Materials|
|Steel Greenhouses||Steel, profiles, screws, greenhouse polythene sheet, nets, drip lines|
|Wooden Greenhouses||Poles, greenhouse polythene sheet, insect net, drip lines, hdpe pipe,|
The greenhouse has to be well ventilated to prevent suffocation of the crops. Ventilation also ensures there is no buildup of pests and diseases. This is done by erecting side curtains or roll up which is opened during the day when it’s hot and closed in the evening. It is made in such a way that there is a net on the inside to allow air in while at the same time preventing insect pests from getting inside.
Greenhouse Construction Cost in Kenya
|8m x 15m||KES 290,000||KES 140,000|
|8m x 20m||KES 300,000||KES 150,000|
|8m x 24m||KES 320,000||KES 170,000|
|8m x 30m||KES 460,000||KES 200,000|
|16m x 30m||KES 670,000||KES 390,000|
Components of Greenhouse Kit
- Structure. Includes steel, profile and wires, tapping screws plus all fittings and accessories.
- Drip Irrigation kit with components such as water filter, hdpe pipes & fittings, double emitter Grekkon drip, all fittings and accessories.
- Entry pouch for disinfection. The entry pouch has a foot bath for disinfecting the foot and hand washing tap.
- Sand, cement and ballast: For holding the steel firmly onto the ground.
- Nails (incase of wooden greenhouse)
- Insect netting for insect pest control and ventilation
- 200 microns UV treated greenhouse polythene cover (1,000 gauge)
- A gutter system for greenhouses joined together (16m width greenhouses)
- An optional venturi fertigation system for automatic fertilizer application.
- Provide Water storage tank.
- Provide Tank stand,
- Do land preparation including bed making and levelling before or during construction.
- Provide material transportation to site
- Provide seedlings and other inputs such as fertilizers, pesticides and other chemicals.
Preparations before transplanting:
- Seed Sowing. Tomato seeds are first sown in a nursery before transplanting them in the greenhouse. The best way to sow seeds is on seedling trays using soilless media such as coco peat. Seedling trays and coco peat are the most preferred method because they guarantee 100% germination rate compared to sowing in the soil. Male sure the coco peat is well treated before use. The germination should preferably be covered under a shade net.
- Land preparation: Plough the land to a fine tilth then prepare the beds measuring 90cm with a path of 0.4m. Raise the beds 15cm high to allow for easier drainage incase of excess water. Raised beds also help with good root penetration. Prepare a maximum of 6 beds for a greenhouse with 8m width to avoid over crowding.
- Add well decomposed manure on the beds then mix with a rake, removing all the big stones and sharp objects that may injure the roots
Transplanting greenhouse tomato seedlings
- After 28 days, the seedlings are ready for transplanting. Open your drip lines 2 hours before transplanting to add moisture onto the soil.
- Add High phosphorous basal fertilizer at a rate of 10gms per plant.
- Transplant at a spacing of 40cm from 1 row to the other and 40-45cm from one plant to the other. 8m x 15m greenhouse can accommodate 500-600 plants while 8m x 30m greenhouse can accommodate 1,000-1,200 plants depending on the spacing selected.
- Consult your agronomist for a detailed crop management programme.
Grekkon Limited’s greenhouses are made to maximize your yield and increase your returns.