By Clement Onoja, BSc, MSc.
20 August 2026
colored capsicum, commonly known as bell pepper, is increasingly becoming an attractive high-value vegetable for farmers targeting fresh, processing and export markets. With proper planning and good agricultural practices, capsicum production can provide farmers with an opportunity to improve productivity, reduce losses and increase farm profitability.
PremaGrow’s virtual training on Smart Farming of colored Capsicum, held on 20 August 2026, focused on equipping entrepreneurial farmers with practical knowledge for successful capsicum production. The training covered the crop from nursery establishment and land preparation through nutrition, irrigation, pest and disease management, harvesting, post-harvest handling and business planning.
Why colored Capsicum?
Capsicum is a high-value vegetable with demand in both local and international markets. Farmers market the crop fresh and use it for processing. When producers follow appropriate practices, the training presentation shows yield potential of 15–25 tonnes per hectare, or 6–10 t/acre.
Demand can be particularly strong during the dry season, making proper production planning and irrigation important considerations for farmers seeking to take advantage of market opportunities.
Successful production, however, begins long before harvesting. Farmers need to select appropriate varieties, establish healthy seedlings, prepare the field properly and manage the crop carefully throughout its growth cycle.
Choosing the Right Variety
Capsicum varieties produce different colours, including green, red and yellow, and variety selection can significantly influence production outcomes.
Extension services encourage farmers to consider traits such as:
- Disease resistance, including resistance to TSWV and other diseases
- Heat tolerance
- Good shelf life
- Suitability for the intended market
Capsicum has a lifecycle of approximately 75–120 days, depending on variety and production conditions.
Selecting varieties suited to the farm environment and target market can therefore help farmers improve crop performance while ensuring that the final produce meets market requirements.
Climate and Soil Requirements
colored capsicum performs best under favourable environmental conditions. The training highlighted an optimum temperature range of approximately 18°C–30°C; avoid temperatures above 35°C whenever possible.
The crop requires approximately 600–1,200 mm of rainfall, together with a relatively dry period during harvesting.
For good root development and drainage, farmers should select well-drained loamy soils with a pH of approximately 6.0–6.8. Capsicum also benefits from adequate sunlight, with the crop requiring at least six hours of full sun.
Good site selection is particularly important because waterlogging can negatively affect crop development and increase disease-related problems.
Proper Land Preparation
Land preparation provides the foundation for successful crop establishment.
Farmers should begin by selecting a suitable site, preferably on high ground where waterlogging is unlikely. They should then clear the land and plough it adequately to achieve a fine tilth.
The training recommends the formation of raised beds approximately 1 metre wide and 15 centimetres high to improve drainage.
Organic manure is also important. The presentation recommends approximately 20–30 tonnes per hectare of manure, applied about two weeks before transplanting.
Where possible, farmers should conduct a soil test before planting. Soil testing helps establish the soil’s pH and nutrient status and supports better decisions regarding basal fertilizer application.
Start with Quality Seedlings
One of the most important lessons from the training is that a productive capsicum crop begins with a strong, healthy seedling.
Quality seedlings should be:
- Approximately 5–6 weeks old
- Have 4–6 true leaves
- Be approximately 10–15 cm tall
- Have a strong stem and healthy root system
- Be free from pests and diseases
PremaGrow highlights its seedlings as being disease-free, vigorous, well hardened and characterized by compact root masses, with the objective of reducing mortality after transplanting.
A healthy seedling provides a strong foundation for crop establishment and ultimately contributes to the crop’s yield potential.
Transplanting for Successful Establishment
Practitioners must conduct transplanting carefully to minimize stress and mortality.
The recommended spacing presented during the training is approximately 60 cm × 45 cm. Water the seedling beds about one hour before uprooting to limit damage to the root system.
You should perform transplanting during the early morning or evening, when temperatures are favorable.
Farmers must irrigate the crop immediately after planting. Farmers should maintain weed-free fields, provide balanced nutrition and regularly scout for pests and diseases.
Replace missing plants early by gap filling, and complete the task within about seven days per the presentation.
Crop Nutrition: Feed the Crop According to Its Growth Stage
Capsicum has different nutritional requirements as it develops. Applying nutrients according to the crop’s growth stage helps support healthy roots, vegetative growth, flowering, fruit setting and fruit development.
The training outlines the following nutritional approach:
At Transplanting – Basal Stage
At transplanting, the presentation recommends NPK 17:17:17 at approximately 400 kg/ha together with manure to support root development.
Vegetative Stage – Around 3 Weeks After Transplanting
Experts advise using urea and NPK during the vegetative stage to support leaf growth and branching.
Flowering and Fruit Set – Around 6 Weeks After Transplanting
During flowering and fruit setting, we highlight NPK together with boron and calcium to support flower retention and fruit set.
Fruit Development – Around 8–10 Weeks After Transplanting
During fruit development, the focus shifts towards potassium-rich fertilizer, which supports fruit size, color and shelf life.
Farmers should always consider their soil test results and specific crop requirements when developing a fertilizer program.
Irrigation and Water Management
Water management is a critical component of successful capsicum production, particularly during dry periods.
The training identifies drip irrigation as the preferred option for water efficiency, while also noting overhead and furrow irrigation systems.
Farm managers may schedule irrigation approximately 2–3 times per week, depending on field conditions and crop requirements.
The most critical periods for adequate water supply include flowering and fruit set. Water stress during these stages can affect crop performance.
Farmers should also avoid waterlogging and excessive moisture. The presentation specifically cautions against overhead irrigation during flowering because it may contribute to flower drop.
Integrated Pest Management
Early detection and management of pests prevent significant impacts on capsicum production.
Common pests highlighted during the training include:
- Aphids
- Thrips
- Whiteflies
- Fruit borers
Recommended management measures include the use of sticky traps, neem and appropriate crop protection products, alongside regular field scouting.
Researchers highlighted measures such as fruit protection and appropriate insecticide application.
Rather than relying exclusively on chemical control, the training recommends an Integrated Pest Management (IPM) approach combining cultural, biological and chemical methods.
Regular scouting—ideally on a weekly basis—allows farmers to detect problems early and take appropriate action before pest populations become difficult to manage.
Managing Common Capsicum Diseases
Disease prevention should form part of everyday farm management.
The presentation highlights several important disease challenges, including:
Anthracnose
Management measures include crop rotation and the appropriate use of copper-based fungicides.
Bacterial Wilt
Farmers should consider resistant varieties and avoid excessively wet soil conditions.
Leaf Spot and Viruses
Eliminate infected plants and manage the vectors that transmit viruses.
Field Sanitation
Maintaining good field sanitation, ensuring appropriate spacing and promoting good airflow through the crop can help reduce disease pressure.
Early detection is essential. Farmers should regularly inspect their crops for abnormal leaves, wilting, lesions, discolouration and other signs of disease.
Good Cultural Practices
Beyond fertilizer, irrigation and crop protection, routine cultural practices have an important role in maintaining a healthy crop.
The training recommends several practices, including:
We stake plants starting at roughly four to five weeks to prevent lodging.
Pruning: Removing unnecessary suckers can improve airflow within the crop.
We will weed the field roughly three to four times as necessary.
Mulching: Mulching can help conserve soil moisture.
Pollination: During flowering, gently shaking plants can assist pollination.
These seemingly simple practices can make a significant difference when consistently applied throughout the production cycle.
Harvesting colored Capsicum
Growers can harvest Capsicum at either the green or colored stage, depending on the intended market.
The presentation indicates that harvesting may begin from approximately 75–90 days.
For quality preservation, farmers should use scissors when harvesting rather than pulling or breaking fruits from the plant. Farmers should harvest in the early morning, with intervals of about 7–10 days.
Proper harvesting techniques reduce physical damage and help preserve the market value of the produce.
Post-Harvest Handling and Market Quality
To protect good production practices, ensure proper post-harvest handling. colored capsicum is susceptible to bruising, so careful handling is essential.
The training recommends using plastic crates rather than bags to minimize damage during handling and transportation.
For storage, the presentation indicates conditions of approximately 7–10°C and 90–95% relative humidity, with a potential shelf life of approximately 2–3 weeks.
Grade export-ready produce properly according to factors such as:
- Size
- Color
- Freedom from defects
- Overall quality
Consistent grading helps farmers meet buyer expectations and can improve access to premium markets.
Turning Capsicum Farming into a Business
Smart farming is not only about producing more. It is also about producing efficiently and selling profitably.
Farmers need to consider production costs, expected yields, input requirements, labour, irrigation, crop protection, post-harvest handling and the target market before establishing a crop.
A profitable capsicum enterprise should therefore begin with a business plan that answers important questions such as:
- Which variety will we plant?
- How large will the production area be?
- We must provide which inputs?
- What will production cost?
- Which market will absorb the harvest?
- What quality standards does the buyer require?
- In what ways will the producers harvest, grade, and transport the produce?
Understanding the economics of production allows farmers to make better investment decisions and reduce avoidable losses.
The Importance of Smart Farming
Successful colored capsicum production requires an integrated approach. There is no single practice that guarantees success.
Farmers need to combine quality seedlings, proper land preparation, balanced nutrition, efficient irrigation, pest and disease management, good cultural practices, careful harvesting and proper post-harvest handling.
The ultimate objective is not simply to grow capsicum, but to produce high-quality fruits that meet market requirements while controlling production costs and maximizing returns.
Learn, Plan and Grow with PremaGrow
PremaGrow’s agricultural services include vegetable seedling production, farmer training, farm establishment services, agri-tourism and market linkages.
The organization’s mission is to serve as a strategic anchor in farming business ventures, guided by values of reliability, affordability, listening and accessibility.
Farmers interested in strengthening their knowledge of modern agricultural production can participate in PremaGrow’s farmer training programmes and field activities.
Upcoming activities highlighted in the training presentation include a Virtual Training on Smart Farming of Outdoor Tomatoes on 24 September 2026 at 8:00 p.m., a Farmers Field Day in Kinanie on 2 October 2026 in collaboration with Amiran (K) Ltd, and Farmers Field Days scheduled for 19–20 February 2027 at PremaGrow Mikumbuni, Meru, in collaboration with various stakeholders.
For enquiries and farmer support:
Katani: +254 796 140 566
Meru: +254 769 600 244
Email: premagrow@gmail.com / info@premagrow.com
Website: www.premagrow.com
Conclusion
Colored capsicum provides an opportunity to farmers prepared to run production as a business rather than as mere farming. With the right variety, healthy seedlings, suitable soil and climate, proper nutrition, efficient irrigation, effective pest and disease management, and careful post-harvest handling, farmers can improve both productivity and market value.
The key message from PremaGrow’s Smart Farming of colored Capsicum training is simple: a good crop starts with good decisions, consistent management and a clear understanding of the market.
By adopting smart farming practices from nursery to market, farmers can build more productive, sustainable and profitable capsicum enterprises.
