The Rise, Fall, and Possible Rise of Maslin Agriculture

Podcast Transcript

For thousands of years, farmers didn’t plant just one crop; they planted many together in the same field.

This practice, known as maslin agriculture, once fed entire populations and offered a built-in defense against famine and failure.

Then, almost everywhere, it vanished.

But today, as modern agriculture faces new challenges, this ancient method is quietly making a comeback.

Learn more about maslin agriculture on this episode of Everything Everywhere Daily.

I’m guessing that most of you might not be familiar with the term maslin or what maslin is with respect to agriculture.

The general definition of maslin is “A mixture composed of different materials.” With respect to the episode’s theme, it has a more specific meaning. It is “A mixture of different sorts of grain, as wheat, rye, barley, or oats.”

This seems like a very pretty, simple thing, and it is, but its historical implications are profound.

Unlike what most people envision, ancient farmers didn’t usually have a field of one type of grain, as they do today. Ancient peoples intermingled their cereal crops.

Maslin agriculture made sense to ancient and medieval farmers because it solved multiple problems at once, especially in a world without modern inputs, insurance, or reliable weather forecasts.

Maslin farming involves several plant species growing together in a symbiotic relationship, where the crops support one another. This wasn’t a case of having a row of one crop and another row of another.

Ancient farmers would have a bag containing various grain seeds mixed together. They would then toss them onto their field with their hands, a technique known as broadcasting. The seeds would land randomly, with wheat, rye, barley, and whatever else they might have growing right next to each other.

In the same way that a forest contains many different types of trees, maslin farming contains different crops. In a forest, we find an oak next to a maple, adjacent to a birch, or an elm. Each of these trees offers unique traits that ensure not only their survival but the survival of the entire forest.

One tree may need less sunshine or water. Its roots may grow deep instead of wide. This diversity lets each plant meet its needs while coexisting with others.

Maslin farming emerged after the Agricultural Revolution in the Fertile Crescent and was first practiced across Mesopotamia. The first farmers naturally found crops intermingled when they switched to planned planting.

Besides its Mesopotamian origins, Egyptian farmers also used it. Egyptian farmers often used emmer and barley blends to brew beer. The Egyptians stumbled upon one of the great secrets of brewing: using different grains to add complexity and depth to beer’s taste and mouthfeel.

Ancient and medieval farmers weren’t trying to maximize yield under ideal conditions. They were trying to survive in uncertain times. Maslin agriculture worked because it traded a bit of peak efficiency for resilience, adaptability, and reliability.

In their context, that was the smarter strategy.

In modern monoculture agriculture, a single pest or weather event can wipe out an entire crop. Different crops vary in their resistance to drought, pests, and moisture. If something affects one crop, such as wheat, it might not affect another crop, such as rye, quite as much.

Moreover, the fact that everything is mixed together also provides an element of protection. Modern systems use rows of a single grain type. If a pest or fungus strikes, these rows help it spread quickly across the field. A fungus can spread from host to host without any interference.

In a maslin farming environment, however, the loss would be far less severe. Properly mixing and balancing of grain blends can build natural immunity to disease, fostering what agroscientists call systemic resilience in an ecosystem.

In a maslin field, for example, wheat stalks may be affected by a fungus, but as spores move, they reach non-host plants, and the disease does not spread further. Maslin fields can face some losses, but the diversity of grains helps absorb and limit the damage.

Commingled planting also helps fields avoid nutrient fatigue. When properly combined, wheat, oats, and barley all help the soil in different ways. For example, oats have deeper roots than those of a typical cereal grain, accessing nutrients at a different level in the soil. This can promote a healthier root system in wheat and barley, which don’t have to compete with the oat roots.

A key example of this principle can be seen in the Dust Bowl’s destruction of the monoculture wheat crop. If Great Plains farmers had planted a more diverse selection of crops, they might have avoided some devastation in the early stages.

Oats and barley respond differently to arid climates. More ground cover from greater diversity of crops may have stalled the intense erosion seen during the Dust Bowl.

Maslin farming also solves a problem that plagues every gardener on the planet: weeds. Maslin farming uses plants with differing growth patterns. This ground cover provided by multiple grains can keep weeds at bay and eliminate or reduce the need for herbicides.

Even in the Americas, prior to the arrival of the Europeans, a maslin-like system was used in the form of the three-sister crops.

The “Three Sisters” system, developed by many Indigenous peoples of North America, involves maize, beans, and squash grown together in the same plot. These crops are intentionally interplanted because they support each other: corn provides a structure for beans to climb, beans fix nitrogen in the soil, and squash spreads along the ground to suppress weeds and retain moisture.

It wasn’t a traditional cereal maslin, but the same principles did apply.

Maslin fields could often be harvested together and used without strict grain separation. The resulting mixed grain could be milled into flour for bread or used as animal feed. This flexibility fits well with subsistence farming, where households need options rather than standardized products.

Maslin bread, made from mixed grains, often had a broader nutritional profile than pure wheat bread. Rye added fiber and micronutrients, creating a more complex flavor. In many regions, this wasn’t just practical; it became a staple food culture.

So, there were a host of reasons why maslin farming was practiced in the ancient world. It was a way to reduce risk and avoid a disaster that could have led to famine for a family, a village, or a nation.

So, why did it stop? What brought about the rise of monoculture agriculture?

Maslin agriculture didn’t disappear because it failed. It disappeared because something more efficient, at least on paper, replaced it.

One cause was the rise of cash crops. Europeans introduced cash crops to Asia and Africa. Rubber, indigo, sugar, and tea became the primary crops grown in colonies. These crops were almost always grown as monocrops. The goal was to maximize revenue by maximizing yields.

As such, they were susceptible to occasional crop failures. For example, the indigo crisis, caused by years of drought in the 1870s, triggered one of the worst famines in history. Indian indigo planters were not allowed to cultivate food; they had to buy food from the British with their indigo profits. If the indigo crop failed, they had no money for food.

These monocrop techniques eventually spread into grain production.

The biggest shift came with the rise of modern, industrial farming. As agriculture mechanized in the 18th and 19th centuries, especially in places like England, farmers began favoring single-crop systems that could be planted, harvested, and processed uniformly.

Mixed fields of wheat and rye didn’t fit well with new machinery, especially if the grains ripened at slightly different times.

At the same time, markets were changing. Grain buyers, millers, and bakers increasingly demanded consistency. Standardized flour made it easier to control baking results, price commodities, and trade at scale. Maslin, by definition, produced variability, which became a liability in a system built on uniformity.

There was also a productivity argument. As fertilizers, improved seed varieties, chemicals, and scientific farming methods were developed, monocultures could usually provide higher yields under ideal conditions. Governments and agricultural institutions encouraged specialization because it maximized output and simplified distribution.

Finally, infrastructure locked the system in place. Grain elevators, rail transport, and global commodity markets were all designed around single crops. Once that system was built, it reinforced itself. Farmers who didn’t conform had a harder time selling their harvest.

In the 20th century, Norman Borlaug and the Green Revolution established monoculture systems to address the looming threat to the global food supply. While Borlaug’s achievements were significant in preventing disaster, it is important to note that his efforts also entrenched monoculture agriculture and moved many farmers away from polyculture systems.

Maslin farming is making a comeback in the modern world, albeit not as quickly as some agro-scientists would prefer.

Ethiopia is probably the best modern example of maslin-style farming still being practiced at scale among small farmers.

Farmers in regions like Tigray and Amhara commonly sow mixed cereals, such as wheat and barley, in the same field. Locally, these mixtures even have specific names, reflecting how normalized the practice is.

This isn’t experimental, it’s practical. Ethiopian agriculture is heavily dependent on rainfall and subject to drought and variable soils, so maslin systems act as a built-in insurance policy. If one crop fails due to weather, pests, or disease, the other often survives.

Research has shown that these mixed fields can produce more stable yields and, in some cases, even outperform single-crop fields, with better resistance to pests, weeds, and environmental stress.

Here’s the hard truth: Maslin won’t come back at scale unless the economics work.

Modern supply chains demand consistency. Grain elevators, millers, and large bakeries are built around standardized inputs. A mixed grain harvest complicates everything from pricing to processing. Even harvesting can be tricky if the crops mature at slightly different times.

There’s also a knowledge gap. Farmers today are trained in highly specialized systems, not mixed cropping, so reintroducing maslin would require new research, new equipment adaptations, and a shift in mindset.

That said, there would be significant benefits from a large-scale return to maslin agriculture. A return to maslin agriculture would offer modern farmers something the current system often lacks: resilience.

By growing mixed grains such as wheat and rye together, farms could better withstand unpredictable weather, poor soils, and pest outbreaks, reducing the risk of total crop failure.

It could also lower reliance on fertilizers and pesticides by improving soil health and naturally suppressing weeds. While it might not maximize yields in ideal conditions, it would likely produce more stable harvests over time, support biodiversity, and open niche markets for distinctive, mixed-grain products, making agriculture more sustainable both economically and environmentally.

Maslin farming today survives where farming is hardest, not where it is easiest. It persists in environments where variability, poor soils, or limited inputs make monoculture risky.

That’s the key insight: Maslin didn’t fail because it doesn’t work. It was abandoned because industrial agriculture didn’t need its strengths. In places like Ethiopia, where those strengths still matter, it never went away.