Barley

Barley is a type of grass.

People first grew it a long time ago. It grows well in cool places. It can live even when it is dry.

Many people use it for food. It can go in soups or bread. It is also used to feed farm animals.

Some barley has two rows of seeds. Other barley has six rows. This makes the plant look tufted.

Barley is a very important crop. It helps feed people and animals all over the world.

Barley is a type of grass that grows grains.

It is one of the first crops people ever grew. This started in the Fertile Crescent around 9,000 BC.

People found that certain barley was easier to harvest. The seeds stayed on the plant instead of falling off.

Barley grows best in cool places with good soil. It can live in dry land or salty soil. It is a very big crop. In 2023, people grew 146 million tonnes of it.

Most of it is used to feed farm animals. About 30 percent is used to make things like beer or whisky. People also eat it in bread, soups, and stews.

There are different kinds of barley. Some have two rows of seeds. Others have six rows. This makes the plant look tufted. In Tibet, people make a food called tsampa from barley. It has been a main food there for a long time.

Barley is a special kind of grass that grows tiny, edible grains.

It is a very important crop for people all over the world. Many people use it to make food like bread, soups, and stews. It is also used to make things like beer and whisky. In fact, about 30 percent of the world's barley is used for these things. The rest, about 70 percent, is used to feed farm animals. It is a huge part of how we feed the planet.

Growing barley is a careful process that needs the right environment. This plant likes to grow in cool temperatures and sunny spots. It needs soil that lets water drain away easily. Barley is quite tough and can grow in dry land or salty soil.

Farmers must watch out for pests like aphids or caterpillars. They also look for diseases like rust or mildew that can hurt the plants. When the ears of the grain turn yellow and droop, they are ready to harvest.

Humans have been working with barley for a very long time. It was one of the first grains ever grown by people. This started in a place called the Fertile Crescent around 9,000 BC.

Long ago, wild barley had seeds that fell off easily. When people began farming it, they found a type that stayed on the plant. This made it much easier to harvest the grains. By 2,000 BC, barley had spread across much of Eurasia.

There are many interesting facts about how barley grows and is used. Some barley has two rows of seeds, while other types have six rows.

In 2023, the world produced 146 million tonnes of this grain. Russia was the biggest producer, making 12 percent of the total. In Tibet, barley has been a main food since the fifth century AD. People there make a special flour called tsampa. This grain helped build a strong civilization in the mountains.

Barley connects to many parts of history and culture. In ancient Mesopotamia, a stalk of barley was a symbol for a goddess.

In old English stories, a character named John Barleycorn represents the grain. You can even see its name in English pub names like The Barley Mow. Even the word "barn" comes from an old word for a barley store.

It is a plant that has truly shaped how humans live.

Barley is a vital cereal grain belonging to the grass family, known scientifically as *Hordeum*.

It is a major global crop grown primarily in temperate climates. People value barley for its incredible versatility in food and industry. It serves as a foundation for many diets and a key ingredient in various products. This grain is one of the most important crops for feeding both humans and livestock. Its ability to grow in difficult conditions makes it a reliable resource for farmers worldwide.

Growing barley involves specific botanical processes and environmental needs. The plant features flowers arranged in clusters of spikelets that form a herringbone pattern. Each spikelet has a long, thin part called an awn, which gives the ears a tufted appearance.

To grow well, barley requires full sunshine and well-drained soil. It prefers relatively low temperatures during its growing season. While it is quite tolerant of drought and soil salinity, it is not as hardy in winter as rye or wheat. Farmers must also manage pests, such as aphids and caterpillars, and fungal diseases like barley rust. When the stems and ears turn yellow and begin to droop, the crop is ripe for harvest.

There are distinct types of barley categorized by their structure. In two-row barley, only the central spikelet in each cluster of three is fertile. In six-row barley, a mutation in a gene called *vrs1* allows all three spikelets to be fertile.

This difference affects the kernel shape and enzyme content. Brewers in Europe often prefer two-row cultivars, while North American breweries frequently use six-row varieties. Another type is hulless barley, also called "naked" barley. This variety has an easier-to-remove hull, which increases digestibility for animals like pigs and poultry. It can also provide higher protein and more beta-glucan.

History shows that barley was one of the first grains domesticated by humans. This process began in the Fertile Crescent around 9,000 BC.

Wild barley had a brittle spike that caused seeds to shatter and disperse easily. Domestication selected for a mutation in the *Bt1* and *Bt2* genes, resulting in nonshattering spikelets. This change made the grain much easier for humans to harvest. By 2,000 BC, barley had spread throughout Eurasia. It has been a staple in many regions, such as the Korean Peninsula and Tibet, for thousands of years.

Global production numbers highlight the massive scale of barley farming. In 2023, barley was the fourth most produced grain, with 146 million tonnes grown worldwide.

In 2024, production reached 142 million tonnes. Russia led the world in production, accounting for 12 percent of the total. The use of the grain is divided into two main categories. Approximately 70 percent of global production is used as animal feed. The remaining 30 percent is used for human food or as fermentable material for beer and whisky.

Barley has many notable cultural and historical connections. In ancient Mesopotamia, the stalk of barley served as a symbol for the goddess Shala.

In Tibet, barley has been a staple since the fifth century AD, where it is made into a flour called tsampa. English folklore even features a character named John Barleycorn, who personifies the grain. The word "barn" actually comes from the Old English word *bere-aern*, meaning a barley store.

You can even see its influence in English pub names like The Barley Mow.

Modern science has allowed us to understand barley at a molecular level. In 2012, the International Barley Genome Sequencing Consortium successfully sequenced the barley genome.

The genome consists of 5,000 Mbp and is organized into seven pairs of nuclear chromosomes, labeled 1H through 7H. It also includes one mitochondrial and one chloroplast chromosome. This genetic knowledge helps scientists study how barley relates to other grasses like wheat and rye. Understanding these complex relationships helps ensure the grain remains a stable food source for the future.