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Taro

life science Maturity 9-11 Next article →

Taro is a highly important root vegetable used by millions of people worldwide. It comes from the tropical perennial plant known as *Colocasia esculenta*. This plant belongs to the Araceae family. People consume many different parts of the plant, including the leaves, stems, and petioles. However, the most common part used for food is the corm. A corm is a thick, starchy underground stem.

Peeled taro corms
Peeled taro corms

Because it is so nutritious, taro serves as a primary food staple in many cultures. It is essential in African, Caribbean, Oceanian, and various Asian societies.

The biological structure of taro is quite complex. The plant grows from rhizomes, which are horizontal underground stems. From these rhizomes, large leaves sprout upward. These leaves are often triangular or heart-shaped. They are dark green on the top side and light green underneath. The plant also features a spadix, which is a spike of flowers. This spadix is usually about three-fifths as long as the spathe, a leaf-like structure that surrounds it.

Within the flowering parts, there are female ovaries mixed with sterile white ones. There are also neuter parts that grow above the females.

Taro is a very versatile crop because it can grow in different environments. Farmers often use two main methods of cultivation. One method is growing taro in flooded paddy fields where water is abundant. The other method is growing it in upland areas using rainfall or irrigation. Flooded cultivation offers several specific advantages. It can produce yields that are about double the amount of dry-land cultivation. It also allows for out-of-season production and helps with weed control.

Kalo Loi Harvest
Kalo Loi Harvest

In some Polynesian societies, people even build manmade floodplains called *repo* specifically for taro.

Humans have been cultivating taro for thousands of years. It is considered one of the most ancient crops in history. Archaeologists have found evidence of taro use in many ancient locations. For example, traces were found in the Niah Caves of Borneo from 10,000 years ago. In the Solomon Islands, evidence dates back as far as 28,000 to 20,000 years ago. Around 1300 BC, Austronesian peoples carried taro to the Pacific Islands. This made it a vital staple for Polynesian cultures.

It also reached Madagascar as early as the 1st century AD.

Today, taro production is a massive global industry. In 2022, the total world production reached 18 million tonnes. Nigeria was the leading producer, accounting for 46% of the global total. The average yield for taro is approximately 7 tons per hectare. This makes it the fifth largest root and tuber crop produced worldwide.

Tarooutput
Tarooutput

Because taro is a high-value crop, producers use strict quality control. Most markets prefer corms that weigh between 1 and 2 kilograms. To prevent rot, farmers must manage the high moisture content carefully. They often store corms at temperatures between 10 and 15 degrees Celsius.

Taro is often confused with other plants due to its appearance. Its massive leaves have earned it the nickname "elephant ears." Many other plants in the Araceae family, such as *Monstera* or *Philodendron*, share this nickname. Taro is closely related to the genera *Xanthosoma* and *Caladium*. Some varieties of taro include giant taro and swamp taro.

A variety of taro plant at Mount Isarog National Park
A variety of taro plant at Mount Isarog National Park

These relatives are often grown as ornamental plants in gardens because of their striking foliage.

Understanding taro also requires looking at its scientific history. In the 18th century, the Swedish biologist Carl Linnaeus described two species. He named them *Colocasia esculenta* and *Colocasia antiquorum*. Most modern botanists now view them as a single, highly variable species. The correct scientific name is *Colocasia esculenta*. The name "taro" itself has deep linguistic roots. It was borrowed from the Māori language by Captain Cook in 1769. This name is related to many Polynesian and Austronesian words.

Teochew Sweet Yam Paste - After Stirring
Teochew Sweet Yam Paste - After Stirring
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🖼️ Images & Media (26)
File:Tarooutput.png
Tarooutput.png
File:Peeled taro corms.jpg
Peeled taro corms.jpg
File:Lovo.jpg
Lovo.jpg
File:Cleaning the kalo, Sandwich Islands, 1852, watercolour by James Gay Sawkins.jpg
Cleaning the kalo, Sandwich Islands,...
File:Kalo Loi Harvest.jpg
Kalo Loi Harvest.jpg
File:Teochew_Sweet_Yam_Paste_-_After_Stirring.jpg
Teochew_Sweet_Yam_Paste_-_After_Stirring.jpg
File:Excavated satoimo (1)-(5).jpg
Excavated satoimo (1)-(5).jpg
File:Leiden University Library - Seikei Zusetsu vol. 22, page 005 - 紫芋 - Colocasia esculenta (L.) Schott, 1804.jpg
Leiden University Library - Seikei...
File:Toran-guk.jpg
Toran-guk.jpg
File:芋泥 à Taipei.jpg
芋泥 à Taipei.jpg
File:Coloc escul 140521-0021 tdp.JPG
Coloc escul 140521-0021 tdp.JPG
File:Lotlot.jpg
Lotlot.jpg

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