Silage production from sweet potato vines and tubers

Fodder Enrichment for Thriving Livestock

Silage production from sweet potato vines and tubers is a valuable agricultural innovation that efficiently converts underutilized resources into high-quality animal fodder. This technology not only prevents resource wastage under unfavorable conditions but also bridges gaps in animal feed availability for farmers. The fermentation process enhances digestibility, preserving essential nutrients and making it an excellent complement to traditional feeds. By including sweet potato silage in animal rations, livestock can grow rapidly due to its rich nutrient content, ensuring they remain satiated and maintain good health. This approach is particularly beneficial for both small-scale and commercial farmers, offering sustainable and cost-effective solutions to their livestock feeding needs.

This technology is TAAT1 validated.

7•8

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

Problem

Feed Resource Wastage: Sweet potato vines and non-marketable tubers can deteriorate rapidly after harvest, resulting in the loss of potentially valuable livestock feed resources.
Seasonal Feed Shortages: Livestock producers face periods of limited feed availability, particularly during dry seasons when fresh fodder becomes scarce.
Poor Feed Preservation: Fresh sweet potato vines and tubers have high moisture content and deteriorate quickly, making them difficult to store and use over extended periods.
High Feed Costs: Limited availability of preserved local feed resources can increase dependence on purchased feeds, raising livestock production costs.

Solution

Feed Resource Utilization: Silage production converts sweet potato vines and non-marketable tubers into livestock feed instead of allowing these resources to deteriorate after harvest.
Feed Availability During Shortages: Preserving sweet potato materials as silage provides a feed reserve that can be used when fresh fodder is scarce.
Extended Feed Preservation: Ensiling preserves high-moisture sweet potato vines and tubers, extending their storage period and availability beyond harvest.
Reduced Dependence on Purchased Feed: Using locally available sweet potato materials as preserved feed can reduce reliance on purchased feed sources.

Key points to design your business plan

Farmers/Breeders

Training
Participate in training programs on sweet potato silage production. This could be through agricultural extension services, online courses, or local farming communities.
Gather Your Materials
You will need:
- Sweet potato vines and tubers
- A chipper or similar tool for chopping the vines and tubers
- Plastic sheets or tubes for storing the silage
- Sealing materials such as tape or weights
- Salt or sun-dried poultry manure
Prepare the Feedstock
Harvest the sweet potato vines and tubers. Use the chipper to chop them into small pieces. Sun-dry the chopped material to reduce moisture content.
Make the Silage
Layer the chopped vines and tubers into your chosen storage container (bag, drum, or pit). The ratio should be 70% vines to 30% tubers. Add 0.5% salt or sun-dried poultry manure. Make sure each layer is well compacted to remove air pockets.
Seal and Store
Once the container is full, seal it tightly to prevent air from entering. The silage should ferment in this anaerobic condition for about 30 days before it's ready to be fed to livestock.
Monitor and Use
Check the silage regularly for any signs of spoilage. Once ready, it can be used to feed livestock, especially during periods of fodder scarcity.

Adults 18 and over: Positive high

The poor: Positive medium

Under 18: Positive low

Women: Positive low

Climate adaptability: Moderately adaptable

Farmer climate change readiness: Moderate improvement

Biodiversity: Positive impact on biodiversity

Carbon footprint: A bit less carbon released

Environmental health: Greatly improves environmental health

Soil quality: Does not affect soil health and fertility

Water use: Same amount of water used

Scaling Readiness describes how complete a technology's development is and its ability to be scaled. It produces a score that measures a technology's readiness along two axes: the level of maturity of the idea itself, and the level to which the technology has been used so far.

Each axis goes from 0 to 9 where 9 is the “ready-to-scale” status. For each technology profile in the e-catalogs we have documented the scaling readiness status from evidence given by the technology providers. The e-catalogs only showcase technologies for which the scaling readiness score is at least 8 for maturity of the idea and 7 for the level of use.

The graph below represents visually the scaling readiness status for this technology, you can see the label of each level by hovering your mouse cursor on the number.

Scaling readiness score of this technology

Maturity of the idea 7 out of 9

Semi-controlled environment: prototype

Level of use 8 out of 9

Used by some intended users, in the real world

Maturity of the idea										Level of use
9
8
7
6
5
4
3
2
1
	1	2	3	4	5	6	7	8	9

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

Countries where the technology is being tested or has been tested and adopted
Country	Testing ongoing	Tested	Adopted
Kenya	–No ongoing testing	Tested	Adopted
Mozambique	–No ongoing testing	Tested	Adopted
Uganda	–No ongoing testing	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 8: decent work and economic growth

Here are the procedures for silage production from sweet potato vines and tubers:

1. Cutting and Chipping: Begin by cutting the vines and chipping the tubers into suitable sizes. While this can be done by hand, using an electric chipper is more efficient for processing larger quantities of feedstock.

2. Choice of Silo: Select the type of silo you want to use based on your specific needs. Options include 'bag silos,' which involve compressing silage into sealed tubes, 'stack silos' where silage is piled into mounds, and 'trench silos' that are pits of up to 2 meters deep.

3. Compaction: Compact the silage using a metal drum fitted with tubes for air and water drainage. People and weights can be used to push down the feedstock. Alternatively, you can opt for medium to large-sized mechanized press systems, which are suitable for larger-scale operations and can be powered by grid electricity or generators.

4. Storage Adaptation: Ensure that the size and means of storage are adapted to your specific context, whether you are a subsistence or commercial farmer. This step is crucial for preserving the quality of the silage.

5. Feeding Considerations: Once the silage has been opened, it should be fed to livestock within a short period to prevent spoilage. Proper adaptation of storage methods helps manage this effectively.

Last updated on Sep 23, 2026