Climbing Bean with High Yield and N Fixation

Growing Prosperity: Climbing Beans for Food Security & Income Growth

Climbing beans are characterized by their long, indeterminate vines that require support from stakes or trellises. They can grow up to 4 meters or more in height, allowing for vertical canopy development and an extended harvesting period. Climbing beans have become a valuable option for small-scale farmers, especially in regions with shrinking and degraded land holdings. Additionally, these beans have been adapted to local soil and weather conditions in various production zones across Sub-Saharan Africa. Improved varieties of climbing beans are bred with a focus on traits such as bean productivity, nodulation efficacy, drought resistance, disease resistance, and pest resistance. This varietal improvement effort has led to the development of elite lines with superior nitrogen-fixing abilities and landraces suited to specific agroecosystems. This technology significantly contributes to food security, alleviates hunger and malnutrition, and enhances the income of small-scale farmers in Eastern and Southern Africa. Furthermore, the nutritional value of climbing bean varieties makes them suitable for processing into various products, including flour, pre-cooked beans, and canned beans, which can be sold in both local and international markets. Farmers, community-based seed producers, and private seed companies have access to a diverse range of improved climbing bean varieties for multiplication. These varieties include specific options for various countries, such as Kenya, Uganda, Tanzania, and Rwanda, each tailored to local conditions and preferences. Improved climbing bean varieties are characterized by shorter maturity periods, excellent taste, and high starch content, making them a valuable asset for sustainable agriculture in the region.

This technology is TAAT1 validated.

8•7

Scaling readiness: idea maturity 8/9; level of use 7/9

Positive or neutral impact

Adults 18 and over: Positive high
The poor: Positive medium
Under 18: Positive high
Women: Positive high

Positive or neutral impact

Climate adaptability: It adapts really well
Adaptability for farmers: It helps a lot
Biodiversity: It helps them grow and thrive
Carbon footprint: It reduces emissions a little
Environment: It makes a big difference
Soil quality: It doesn't harm the soil's health and fertility
Water usage: It uses the same amount of water

Problem

Low Yields: Traditional bush bean varieties offer limited yields, making it challenging for small-scale farmers to produce sufficient food.
Pests and Diseases: Common bean crops are susceptible to pests and diseases, leading to crop losses and reduced income for farmers.
Abiotic Stresses: Adverse environmental conditions, such as drought and poor soil quality, hinder bean cultivation and reduce crop productivity.
Nitrogen-Depleted Soils: Many farming regions have nitrogen-depleted soils, which necessitate the use of expensive synthetic fertilizers.
Food Insecurity: Insufficient crop yields contribute to food insecurity and malnutrition, particularly in small-scale farming communities.

Solution

Higher Yields: Improved climbing bean varieties provide significantly higher yields compared to traditional bush beans, ensuring food security and increased income for farmers.

Resistance to Pests and Diseases: These varieties are bred to resist common pests and diseases, reducing the need for chemical pesticides and minimizing crop losses.

Abiotic Stress Tolerance: Climbing bean varieties can thrive in adverse environmental conditions, making them adaptable to different agroecosystems.

Biological Nitrogen Fixation: By promoting higher biological nitrogen fixation, the technology reduces the cost of fertilizers and enables bean cultivation in nitrogen-depleted soils.

Food Security: Climbing beans contribute to food security by offering a more reliable source of food for small-scale farmers and communities.

Key points to design your project

The Climbing Bean technology significantly impacts gender equality, climate resilience, and multiple SDGs in Eastern and Southern Africa. It empowers women by providing improved yields and disease resistance, easing their workload and promoting gender equality (SDG 5). The beans are climate-resilient and reduce the need for synthetic fertilizers, aligning with climate action (SDG 13). The technology also contributes to No Poverty (SDG 1), Zero Hunger (SDG 2), Good Health and Well-being (SDG 3), Decent Work and Economic Growth (SDG 8), Responsible Consumption and Production (SDG 12), and Life on Land (SDG 15).

To incorporate climbing beans into a project, you can follow these steps:

Promotion: Start by promoting the availability of improved climbing beans. Highlight their benefits such as higher yield, climate resilience, and return on investment to attract interest from farmers and stakeholders.
Seed Transfer: Transfer elite varieties of climbing beans to commercial and community-based seed multipliers. This introduces a new product line that can be propagated and distributed to farmers.
Market Connection: Connect producers of climbing beans with buyers and food processors. This creates a wider market opportunity and ensures that farmers have a ready market for their produce.
Financial Support: Provide financial support to farmers to enable them to make necessary and timely investments into quality seed, fertilizer inputs, and staking. This ensures that they have the resources needed to successfully cultivate climbing beans.
Streamlining Operations: For commercial producers, make netting available to streamline trellising operations. This makes it easier for them to manage the climbing beans as they grow.

Considering the technology cost and the requirement of climbing bean seeds per hectare, estimate the quantity of seeds needed for your project. As the technology is available in various countries across Sub-Saharan Africa, include the delivery cost to the project site and account for import clearance and duties if relevant.

A team of trainers could provide training and support during project installation. Include the cost for training and post-training support for using the technology. Communication support for the technology should be developed (flyers, videos, radio broadcasts, etc.)

For better optimization of the improved climbing bean variety, it is recommended to associate this technology with practices that enhance nitrogen fixation, manage pests and diseases, and improve drought resistance.

To implement the technology in your country, you could collaborate with agricultural development institutes and seed multiplication companies. This technology has been developed in 12 countries and is available in various agroecosystems across Sub-Saharan Africa

4.6 t/ha

Potential yield

92 kg

N fixed per ha

28 %

Increase in bean consumption

IP

Trademark

Countries with a green colour: Tested & adopted
Countries with a bright green colour: Adopted
Countries with a yellow colour: Tested

Countries where the technology has been tested and adopted
Country	Tested	Adopted
Benin	Tested	Adopted
Burundi	Tested	Adopted
Côte d’Ivoire	Tested	Adopted
Democratic Republic of the Congo	Tested	Adopted
Kenya	Tested	Adopted
Malawi	Tested	Adopted
Rwanda	Tested	Adopted
South Sudan	Tested	Adopted
Tanzania	Tested	Adopted
Uganda	Tested	Adopted
Zambia	Tested	Adopted
Zimbabwe	Tested	Adopted

This technology can be used in the colored agro-ecological zones. Any zones shown in white are not suitable for this technology.

Agro-ecological zones where this technology can be used
AEZ	Subtropic - warm	Subtropic - cool	Tropic - warm	Tropic - cool
Arid	–	–	–	–
Semiarid	–	–	–	–
Subhumid	–		–
Humid

Source: HarvestChoice/IFPRI 2009

The United Nations Sustainable Development Goals that are applicable to this technology.

Goal 2: zero hunger

Goal 3: good health and well-being

Goal 12: responsible production and consumption

1. Variety Selection: Choose suitable climbing bean varieties based on your agro-ecological conditions and socio-economic context. Consider the specific needs of your region and the adaptability of different varieties.

2. Supporting Structures: Prepare stakes or trellises to support the climbing beans. Ensure that the support structures are strong and tall enough to accommodate the vertical growth of the beans.

3. Cropping Systems: Decide whether you will cultivate climbing beans as a monocrop or in combination with other crops such as maize, banana, roots and tubers, sorghum, or millet. Adjust your planting and management practices accordingly.

4. Planting: Choose well-prepared hills or ridges for planting, especially in clay soils or areas with a high water table. Incorporate organic inputs into the planting sites to enhance soil fertility.

5. Spacing: Determine the appropriate spacing between rows based on your trellising system and the level of mechanization. In a monocrop, row spacing is typically set at 75-100 cm.

6. Seed Inoculation: Inoculate climbing bean seeds with rhizobia to promote nitrogen fixation and improve soil fertility. Follow recommended procedures for seed inoculation.

7. Timely Planting: Plant climbing beans at the right time, considering your local climate and growing season. Ensure that the planting schedule aligns with optimal conditions for growth.

8. Fertilization: Apply appropriate fertilizers as needed, based on soil testing and local recommendations. Proper fertilization can enhance bean yield and soil health.

9. Weeding: Implement effective weeding practices to control weeds and prevent competition for resources. Keep the bean fields free from unwanted vegetation.

10. Monitoring and Maintenance: Continuously monitor the progress of your climbing beans throughout the growing season. Make necessary adjustments in response to changing conditions.

Last updated on 22 May 2024