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The benefits of fermented molasses (CMS) in farming

Q: Is fermented molasses available in bulk?

Yes. Contact Zylem for bulk supply, delivery options and current pricing across South Africa.

Consolidated molasses solids: a carbon-rich by-product of the South African sugar industry that feeds soil biology, holds moisture and builds drought resilience.

Enquire about CMS How it is made

Tall green sugarcane field beside a farm dirt road

Quick answer

What are consolidated molasses solids?

Consolidated molasses solids (CMS), also sold as fermented or condensed molasses solubles, is the mineral-rich residue left after molasses has been fermented for ethanol production. It carries nitrogen, phosphorus and potassium along with a high load of readily available carbohydrate, which is why it works as a fertiliser, a soil conditioner and a livestock feed additive.

N · P · KPlus a broad mineral fraction

High carbonDirect energy source for soil microbes

Slow releaseLess leaching and nutrient runoff

Local by-productSourced from SA sugar processing

Uses on farm

Three ways farmers use fermented molasses

One input, three jobs, which is what makes CMS one of the most versatile raw materials in regenerative agriculture.

Organic fertiliser

Supplies nitrogen, phosphorus and potassium while actively promoting microbial activity: a complete, natural soil nutrient source.

Beef cattle feeding from a long trough in a feedlot shed

Feedstock additive

Improves palatability and weight gain in livestock rations, acts as a natural fly repellent, and lifts overall feed efficiency.

Handful of dark, crumbly healthy soil held in a farmer's hands

Soil enhancer

Stimulates soil organisms, improves structure and aggregate stability, and increases moisture retention for better water use efficiency.

From by-product to resource

How fermented molasses is produced

Sugar refining

Molasses is produced when sugarcane or sugar beet is refined: a resource that would otherwise go to waste.

Fermentation

During ethanol production the molasses is fermented, and a nutrient-rich residue is filtered out and collected.

Agricultural use

The concentrate is stored and used as a mineral-rich, high-carbohydrate feedstuff and soil amendment.

Environment

Environmentally conscious agriculture

Using a by-product that already exists is one of the simplest ways to lower the footprint of a fertiliser programme.

Fertiliser efficiency

Because nutrients release slowly, they stay available to the crop for longer: less waste, fewer applications.

Fits organic systems

A natural fit for certified organic and transitioning operations moving away from synthetic inputs. Confirm with your certifier.

Builds soil health

Repeat applications build humus, improve aggregate stability and increase the diversity of beneficial soil organisms.

Fermented molasses vs conventional fertiliser

More sustainableDerived from a renewable by-product of sugar production, with a significantly lower environmental footprint than manufactured synthetics.

Less nutrient runoffSlower release means less risk of nutrients washing into waterways, protecting local ecosystems and helping you meet environmental requirements.

More complete growthMacronutrients, micronutrients and carbohydrates together support more balanced plant growth than a straight NPK product.

Drought

Building drought-resistant crops

With drought conditions worsening across Southern Africa, resilience is no longer optional. Fermented molasses helps on both fronts that matter under water stress: it supplies essential nutrients, and it improves the soil’s ability to hold moisture.

Read our drought guide

Green seedling pushing through dry, cracked soil during drought

FAQs

Fermented molasses questions, answered

What growers and feedlot managers ask us most about CMS.

Is CMS the same as molasses?

No. Molasses is the sugar-refining by-product. CMS is what remains after that molasses has been fermented, so it is more concentrated in minerals and lower in fermentable sugar.

How is it applied to soil?

Usually diluted and applied through irrigation or as a broadcast soil application ahead of planting. Rates depend on soil carbon status and crop.

Can it be fed to livestock?

Yes, it is widely used as an energy and mineral supplement in cattle and sheep rations to improve palatability and intake. Introduce it gradually.

Will it acidify or salt my soil?

CMS carries a mineral load, including potassium, so on high-rate or repeat programmes we work from a soil analysis to keep your base saturation balanced.

Does it feed soil microbes?

That is its main strength. The available carbohydrate is an immediate energy source for soil biology, which is why it pairs well with microbial and compost programmes.

Is it available in bulk?

Yes. Contact us for bulk supply, delivery options and current pricing across South Africa.

Learn more about fermented molasses

Tell us your crop, soil and irrigation setup and we will advise on rates, delivery and how CMS fits your season.

Talk to an agronomist Book a soil analysis

Call us+27 33 347 2893

Emailadmin2@zylemsa.co.za

Visit usUnit 20, 3 Cascades Crescent, Chase Valley, Pietermaritzburg, KZN, 3201

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Other raw materials we work with

Fermented molasses is one of several biological raw materials behind our formulations.