Golden cassava varieties (Vitamin A fortified)

Yellow-fleshed cassava rich in vitamin A

Yellow-fleshed cassava is a vitamin A-enriched variety. The variety is the result of the cross-breeding of natural lines containing high levels of provitamin A and hybrid lines with higher yield potential disease resistance and drought tolerance.

This technology is TAAT1 validated.

7•6

Scaling readiness: idea maturity 7/9; level of use 6/9

Positive or neutral impact

Adults 18 and over: Positive high
The poor: Positive high
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 doesn't reduce emissions at all
Environment: It makes a little difference
Soil quality: It doesn't harm the soil's health and fertility
Water usage: It uses the same amount of water

Problem

Golden cassava technology provide solutions to numerable problem such as:

Malnutrition and Hidden Hunger: Many people in Sub-Saharan Africa rely on cassava as their main food staple, but commonly grown cassava varieties lack essential vitamins and minerals. This has led to widespread malnutrition and hidden hunger, particularly vitamin A deficiency, affecting 50% of children.
Vitamin A Deficiency-Related Health Issues: Insufficient vitamin A intake causes preventable blindness in children and compromises their immune system, increasing the risk of death from diseases like measles, diarrhea, and respiratory infections.
Limited Nutritional Value: Conventional cassava varieties do not provide balanced nutrition, unlike synthetic supplements, and do not contain sufficient provitamin A.
Agronomic Challenges: Many cassava varieties lack disease resistance and drought tolerance, limiting their yield potential.

Solution

Golden cassava technology provides numerous solutions to the problems such as

Biofortification with Provitamin A: Golden cassava varieties are biofortified with elevated levels of provitamin A, which is converted into vitamin A in the body. This addresses the problem of vitamin A deficiency and hidden hunger.
Improved Agronomic Traits: Through breeding techniques, golden cassava varieties are developed by crossing natural lines with elite land races and hybrid lines, resulting in improved agronomic traits such as disease resistance and drought tolerance.
Higher Provitamin A Content: Golden cassava varieties contain 2 to 3 times more provitamin A than the original parent material, allowing them to meet a significant portion or all of the nutritional requirements in communities that rely on cassava as a staple food.
Genomic Modification: Genomic modification is used to silence the activity of enzymes that break down provitamin A without reducing yield potential or interfering with other agronomic traits.
Successful Scaling and Commercialization: Scaling programs for golden cassava in Sub-Saharan African countries have effectively reduced vitamin A deficiency and related health issues, boosting value creation for farmers at the local and regional scale.
Adaptability: Golden cassava varieties can be adapted to various agro-ecosystems and growing conditions, making them suitable for a wide range of regions.
Consumer Acceptance: Studies show that consumers do not object to the color and like the flavor of provitamin A-enriched cassava, which promotes its acceptance.
Wide Availability: Open-pollinating lines of golden cassava can be multiplied by community and private enterprises for rapid scaling and commercialization, while hybrid types with improved traits are also available.
High Yields: Some golden cassava varieties, like UMUCASS 36, UMUCASS 37, and UMUCASS 38, have been developed to achieve similar or higher yields than natural or hybrid lines under various soil and weather conditions, addressing the agronomic challenges.

Key points to design your project

Golden cassava technology is a solution for malnutrition and hunger by biofortifying with provitamin A and enhancing agronomic traits, thereby empowering women and promoting climate resilience. Its impact extends to Sustainable Development Goals, supporting food security, health, gender equality, climate action, and land conservation.

To integrate this technology into your project, and create a list of project activities and plan these activities:

Collaborate with all stakeholders in the cassava value chain to establish quality parameters, norms, and screening methods for golden cassava varieties.
Engage multipliers and seed companies to produce and market high-quality seeds capable of yielding equal or greater root yields than non-biofortified varieties.
Establish linkages between seed suppliers, cassava growers, food processors, and consumer groups to stimulate demand for nutritional food produced from golden cassava.
Offer financial assistance to local suppliers and smallholder farmers to facilitate investments in and purchases of planting material for golden cassava.

Considering the technology cost and a requirement per ha, estimate the quantity of seeds needed for your project.

As the technology is available from Nigeria, 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 maize variety, it is recommended to associate this technology with Integrated weed, pest and soil management system (GAP), Seed bulking for cassava multiplication.

To implement the technology in your country, you could collaborate with agricultural development institutes and seed multiplication companies.

IP

Open source / open access

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
Nigeria	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 5: gender equality

Select healthy cuttings from yellow-fleshed cassava varieties, and Ensure that the cuttings are free from disease symptoms.
Choose the appropriate planting technique based on local rainfall conditions. In dry climates, plant cassava cuttings horizontally and cover them entirely with soil. In humid areas with high precipitation, plant cuttings vertically or angularly.
Follow recommended soil and fertilizer management practices tailored to your specific growing area and conditions, essential for achieving high root yields.
Tackle limitations in nutrient availability and water supply. Prevent soil compaction and weed encroachment
Utilize disease-resistant cassava varieties to enhance production levels.
Harvest the mature cassava roots when they are ready for use.
Due to their high nutritional value, the roots from golden cassava varieties are ideal for processing into various products. Manufacture products like flour, bread, garri, or crisps from the cassava roots. These processed goods can be sold in both local and international markets.