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Vegetables in a market in the Philippines

In everyday usage, a vegetable is any part of a plant that is consumed by humans as food as part of a savory meal. The term "vegetable" is somewhat arbitrary, and largely defined through culinary and cultural tradition. It normally excludes other food derived from plants such as fruits, nuts and cereal grains, but includes seeds such as pulses. The original meaning of the word vegetable, still used in biology, was to describe all types of plant, as in the terms "vegetable kingdom" and "vegetable matter".

Originally, vegetables were collected from the wild by hunter-gatherers and entered cultivation in several parts of the world, probably during the period 10,000 BC to 7,000 BC, when a new agricultural way of life developed. At first, plants which grew locally would have been cultivated, but as time went on, trade brought exotic crops from elsewhere to add to domestic types. Nowadays, most vegetables are grown all over the world as climate permits, and crops may be cultivated in protected environments in less suitable locations. China is the largest producer of vegetables, and global trade in agricultural products allows consumers to purchase vegetables grown in faraway countries. The scale of production varies from subsistence farmers supplying the needs of their family for food, to agribusinesses with vast acreages of single-product crops. Depending on the type of vegetable concerned, harvesting the crop is followed by grading, storing, processing and marketing.

Vegetables can be eaten either raw or cooked and play an important role in human nutrition, being mostly low in fat and carbohydrates, but high in vitamins, minerals and fiber. Many governments encourage their citizens to consume plenty of fruit and vegetables, five or more portions a day often being recommended.


Domestic vegetable garden in the United Kingdom

The word vegetable was first recorded in English in the early 15th century. It comes from Old French,[1] and was originally applied to all plants; the word is still used in this sense in biological contexts.[2] It derives from Medieval Latin vegetabilis "growing, flourishing" (i.e. of a plant), a semantic change from a Late Latin meaning "to be enlivening, quickening".[1]

The meaning of "vegetable" as a "plant grown for food" was not established until the 18th century.[3] In 1767, the word was specifically used to mean a "plant cultivated for food, an edible herb or root". The year 1955 noted the first use of the shortened, slang term "veggie".[1]

As an adjective, the word vegetable is used in scientific and technical contexts with a different and much broader meaning, namely of "related to plants" in general, edible or not — as in vegetable matter, vegetable kingdom, vegetable origin, etc.[2]


A Venn diagram shows the overlap in the terminology of "vegetables" in a culinary sense and "fruits" in the botanical sense.

The exact definition of "vegetable" may vary simply because of the many parts of a plant consumed as food worldwide – roots, tubers, bulbs, corms, stems, leaf stems, leaf sheaths, leaves, buds, flowers, fruits and seeds. The broadest definition is the word's use adjectivally to mean "matter of plant origin" to distinguish it from "animal", meaning "matter of animal origin". More specifically, a vegetable may be defined as "any plant, part of which is used for food",[4] a secondary meaning then being "the edible part of such a plant".[4] A more precise definition is "any plant part consumed for food that is not a fruit or seed, but including mature fruits that are eaten as part of a main meal".[5][6] Falling outside these definitions are mushrooms and other edible fungi, as well as edible seaweed which, although not parts of green plants, are often treated as vegetables.[7]

In everyday language, the words "fruit" and "vegetable" are mutually exclusive. "Fruit" has a precise botanical meaning, being a part that developed from the ovary of a flowering plant. This is considerably different from the word's culinary meaning. While peaches, plums, and oranges are "fruit" in both senses, many items commonly called "vegetables", such as eggplants, bell peppers and tomatoes, are botanically fruits. The question of whether the tomato is a fruit or a vegetable found its way into the United States Supreme Court in 1893. The court ruled unanimously in Nix v. Hedden that a tomato is correctly identified as, and thus taxed as, a vegetable, for the purposes of the Tariff of 1883 on imported produce. The court did acknowledge, however, that, botanically speaking, a tomato is a fruit.[8]


Before the advent of agriculture, humans were hunter-gatherers. They foraged for edible fruit, nuts, stems, leaves, corms and tubers, scavenged for dead animals and hunted living ones for food.[9] Forest gardening in a tropical jungle clearing is thought to be the first example of agriculture; useful plant species were identified and encouraged to grow while undesirable species were removed. Plant breeding through the selection of strains with desirable traits such as large fruit and vigorous growth soon followed.[10] While the first evidence for the domestication of grasses such as wheat and barley has been found in the Fertile Crescent in the Middle East, it is likely that various peoples around the world started growing crops in the period 10,000 BC to 7,000 BC.[11] Subsistence agriculture continues to this day, with many rural farmers in Africa, Asia, South America and elsewhere using their plots of land to produce enough food for their families, while any surplus produce is used for exchange for other goods.[12]

Throughout recorded history, the rich have been able to afford a varied diet including meat, vegetables and fruit, but for poor people, meat was a luxury and the food they ate was very dull, typically comprising mainly some staple product made from rice, rye, barley, wheat, millet or maize. The addition of vegetable matter provided some variety to the diet. The staple diet of the Aztecs in Central America was maize and they cultivated tomatoes, avocados, beans, peppers, pumpkins, squashes, peanuts and amaranth seeds to supplement their tortillas and porridge. In Peru, the Incas subsisted on maize in the lowlands and potatoes at higher altitudes. They also used seeds from quinoa, supplementing their diet with peppers, tomatoes and avocados.[13]

In Ancient China, rice was the staple crop in the south and wheat in the north, the latter made into dumplings, noodles and pancakes. Vegetables used to accompany these included yams, soya beans, broad beans, turnips, spring onions and garlic. The diet of the ancient Egyptians was based on bread, often contaminated with sand which wore away their teeth. Meat was a luxury but fish was more plentiful. These were accompanied by a range of vegetables including marrows, broad beans, lentils, onions, leeks, garlic, radishes and lettuces.[13]

The mainstay of the Ancient Greek diet was bread, and this was accompanied by goat's cheese, olives, figs, fish and occasionally meat. The vegetables grown included onions, garlic, cabbages, melons and lentils.[14] In Ancient Rome a thick porridge was made of emmer wheat or beans, accompanied by green vegetables but little meat, and fish was not esteemed. The Romans grew broad beans, peas, onions and turnips and ate the leaves of beets rather than their roots.[15]

Some common vegetables

Some common vegetables
Image Description Parts used Origin Cultivars World production
(×106 tons, 2012)[16]
CabbageBG.JPG cabbage
Brassica oleracea
leaves, axillary buds, stems, flowerheads Europe cabbage, red cabbage, Savoy cabbage, kale, Brussels sprouts, kohlrabi, cauliflower, broccoli, Chinese broccoli 70.1
Turnip 2622027.jpg turnip
Brassica rapa
tubers, leaves Asia turnip, rutabaga, Chinese cabbage, napa cabbage, bok choy, collard greens
Raphanus sativus.jpg radish
Raphanus sativus
roots, leaves, seed pods, seed oil, sprouting Southeastern Asia radish, daikon, seedpod varieties
7carrots.jpg carrot
Daucus carota
root tubers Persia carrot 36.9[n 1]
CDC parsnip.jpg parsnip
Pastinaca sativa
Root tubers Eurasia parsnip
Uncommon beetroot colours.jpg beetroot
Beta vulgaris
tubers, leaves Europe, Near East and India beetroot, sea beet, Swiss chard, sugar beet
Kropsla herfst.jpg lettuce
Lactuca sativa
leaves, stems, seed oil Egypt lettuce, celtuce 24.9
Bohne z01.JPG beans
Phaseolus vulgaris
Phaseolus coccineus
Phaseolus lunatus
pods, seeds Central and South America green bean, French bean, runner bean, haricot bean, Lima bean 44.6[n 2]
Tuinboon zaden in peul.jpg broad beans
Vicia faba
pods, seeds North Africa
South and southwest Asia
broad bean
NCI peas in pod.jpg peas
Pisum sativum
pods, seeds, sprouting Mediterranean and Middle East pea, snap pea, snow pea, split pea 28.9[n 2]
Various types of potatoes for sale.jpg potato
Solanum tuberosum
root tubers South America potato 365.4
Aubergine.jpg aubergine/eggplant
Solanum melongena
fruits South and East Asia eggplant (aubergine) 48.4
Tomato je.jpg tomato
Solanum lycopersicum
fruits South America tomato, see also list of tomato cultivars 161.8
Ogórki...jpg cucumber
Cucumis sativus
fruits Southern Asia cucumber, see also list of cucumber varieties 65.1
Pumpkins Hancock Shaker village 2418.jpg pumpkin/squash
Cucurbita spp.
fruits, flowers Mesoamerica pumpkin, squash, marrow, zucchini (courgette), gourd 24.6
Onions.jpg onion
Allium cepa
bulbs, leaves Asia onion, spring onion, scallion, shallot, see also list of onion cultivars 87.2[n 2]
Garlic.jpg garlic
Allium sativum
bulbs Asia garlic 24.8
Leek.jpg leek
Allium ampeloprasum
leaf sheaths Europe and Middle East leek, elephant garlic 21.7
Red capsicum and cross section.jpg pepper
Capsicum annuum
fruits North and South America pepper, bell pepper, sweet pepper 34.5[n 2]
Espinac 5nov.JPG spinach
Spinacia oleracea
leaves Central and southwestern Asia spinach 21.7
Dioscorea polystachya (batatas).jpg yam
Dioscorea spp.
tubers Tropical Africa yam 59.5
Ipomoea batatas 006.JPG sweet potato
Ipomoea batatas
tubers, leaves, shoots Central and South America sweet potato, see also list of sweet potato cultivars 108.0
Manihot esculenta dsc07325.jpg cassava
Manihot esculenta
tubers South America cassava 269.1
  1. Includes both carrots and turnips.
  2. 2.0 2.1 2.2 2.3 Productions of dry and green vegetables added up.

Nutrition and health

Southeast Asian style stir fry ipomoea aquatica in chili and sambal
Vegetables (and some fruit) for sale on a street in Guntur, India

Vegetables play an important role in human nutrition. Most are low in fat and calories but are bulky and filling.[17] They supply dietary fibre and are important sources of essential vitamins, minerals and trace elements. Particularly important are the antioxidant vitamins A, C and E. When vegetables are included in the diet, there is found to be a reduction in the incidence of cancer, stroke, cardiovascular disease and other chronic ailments.[18][19] Research has shown that, compared with individuals who eat less than three servings of fruits and vegetables each day, those that eat more than five servings have an approximately twenty percent lower risk of developing coronary heart disease or stroke.[20] The nutritional content of vegetables varies considerably; some contain useful amounts of protein though generally they contain little fat,[21] and varying proportions of vitamins such as vitamin A, vitamin K and vitamin B6, provitamins, dietary minerals and carbohydrates. Vegetables contain a great variety of other phytochemicals (bioactive non-nutrient plant compounds), some of which have been claimed to have antioxidant, antibacterial, antifungal, antiviral and anticarcinogenic properties.[22][23]

However, vegetables often also contain toxins and antinutrients which interfere with the absorption of nutrients. These include α-solanine, α-chaconine,[24] enzyme inhibitors (of cholinesterase, protease, amylase, etc.), cyanide and cyanide precursors, oxalic acid and others.[citation needed] These toxins are natural defenses, used to ward off the insects, predators and fungi that might attack the plant. Some beans contain phytohaemagglutinin, and cassava roots contain cyanogenic glycoside as do bamboo shoots. These toxins can be deactivated by adequate cooking. Green potatoes contain glycoalkaloids and should be avoided.[25]

Fruit and vegetables, particularly leafy vegetables, have been implicated in nearly half the gastrointestinal infections caused by norovirus in the United States. These foods are commonly eaten raw and may become contaminated during their preparation by an infected food handler. Hygiene is important when handling foods to be eaten raw, and such products need to be properly cleaned, handled and stored to limit contamination.[26]

Dietary recommendations

The USDA Dietary Guidelines for Americans recommends consuming five to nine servings of fruit and vegetables daily.[27] The total amount consumed will vary according to age and gender, and is determined based upon the standard portion sizes typically consumed, as well as general nutritional content. Potatoes are not included in the count as they are mainly providers of starch. For most vegetables and vegetable juices, one serving is half of a cup and can be eaten raw or cooked. For leafy greens, such as lettuce and spinach, a single serving is typically a full cup.[28] A variety of products should be chosen as no single fruit or vegetable provides all the nutrients needed for health.[20]

International dietary guidelines are similar to the ones established by the USDA. Japan, for example, recommends the consumption of five to six servings of vegetables daily.[29] French recommendations provide similar guidelines and set the daily goal at five servings.[30] In India, the daily recommendation for adults is 275 grams (9.7 oz) of vegetables per day.[18]



Growing vegetables in South Africa

Vegetables have been part of the human diet from time immemorial. Some are staple foods but most are accessory foodstuffs, adding variety to meals with their unique flavors and at the same time, adding nutrients necessary for health. Some vegetables are perennials but most are annuals and biennials, usually harvested within a year of sowing or planting. Whatever system is used for growing crops, cultivation follows a similar pattern; preparation of the soil by loosening it, removing or burying weeds and adding organic manures or fertilisers; sowing seeds or planting young plants; tending the crop while it grows to reduce weed competition, control pests and provide sufficient water; harvesting the crop when it is ready; sorting, storing and marketing the crop or eating it fresh from the ground.[31]

Different soil types suit different crops, but in general in temperate climates, sandy soils dry out fast but warm up quickly in the spring and are suitable for early crops, while heavy clays retain moisture better and are more suitable for late season crops. The growing season can be lengthened by the use of fleece, cloches, plastic mulch, polytunnels and greenhouses.[31] In hotter regions, the production of vegetables is constrained by the climate, especially the pattern of rainfall, while in temperate zones, it is constrained by the temperature and day length.[32]

Weeding cabbages in Colorado, US

On a domestic scale, the spade, fork and hoe are the tools of choice while on commercial farms a range of mechanical equipment is available. Besides tractors, these include ploughs, harrows, drills, transplanters, cultivators, irrigation equipment and harvesters. New techniques are changing the cultivation procedures involved in growing vegetables with computer monitoring systems, GPS locators and self-steer programmes for driverless machines giving economic benefits.[32]


Harvesting beetroot in the United Kingdom

When a vegetable is harvested, it is cut off from its source of water and nourishment. It continues to transpire and loses moisture as it does so, a process most noticeable in the wilting of green leafy crops. Harvesting root vegetables when they are fully mature improves their storage life, but alternatively, these root crops can be left in the ground and harvested over an extended period. The harvesting process should seek to minimise damage and bruising to the crop. Onions and garlic can be dried for a few days in the field and root crops such as potatoes benefit from a short maturation period in warm moist surroundings during which time wounds heal and the skin thickens up and hardens. Before marketing or storage, grading needs to be done to remove damaged goods and select produce according to its quality, size, ripeness and color.[33]


All vegetables benefit from proper post harvest care. A large proportion of vegetables and perishable foods are lost after harvest during the storage period. These losses may be as high as thirty to fifty percent in developing countries where adequate cold storage facilities are not available. The main causes of loss include spoilage caused by moisture, moulds, micro-organisms and vermin.[34]

Temporary storage of potatoes in the Netherlands

Storage can be short-term or long-term. Most vegetables are perishable and short-term storage for a few days provides flexibility in marketing. During storage, leafy vegetables lose moisture, and the vitamin C in them degrades rapidly. A few products such as potatoes and onions have better keeping qualities and can be sold when higher prices may be available, and by extending the marketing season, a greater total volume of crop can be sold. If refrigerated storage is not available, the priority for most crops is to store high-quality produce, to maintain a high humidity level and to keep the produce in the shade.[33]

Proper post-harvest storage aimed at extending and ensuring shelf life is best effected by efficient cold chain application.[35] Cold storage is particularly useful for vegetables such as cauliflower, eggplant, lettuce, radish, spinach, potatoes and tomatoes, the optimum temperature depending on the type of produce. There are temperature-controlling technologies that do not require the use of electricity such as evaporative cooling.[5] Storage of fruit and vegetables in controlled atmospheres with high levels of carbon dioxide or high oxygen levels can inhibit microbial growth and extend storage life.[36]

The irradiation of vegetables and other agricultural produce by ionizing radiation can be used to preserve it from both microbial infection and insect damage, as well as from physical deterioration. It can extend the storage life of food without noticeably changing its properties.[37]


The objective of preserving vegetables is to extend their availability for consumption or marketing purposes. The aim is to harvest the food at its maximum state of palatability and nutritional value, and preserve these qualities for an extended period. The main causes of deterioration in vegetables after they are gathered are the actions of naturally-occurring enzymes and the spoilage caused by micro-organisms.[38] Canning and freezing are the most commonly used techniques, and vegetables preserved by these methods are generally similar in nutritional value to comparable fresh products with regards to carotenoids, vitamin E, minerals and dietary fiber.[39]

Bean field and canning factory, New Jersey, US

Canning is a process during which the enzymes in vegetables are deactivated and the micro-organisms present killed by heat. The sealed can excludes air from the foodstuff to prevent subsequent deterioration. The lowest necessary heat and the minimum processing time are used in order to prevent the mechanical breakdown of the product and to preserve the flavor as far as is possible. The can is then able to be stored at ambient temperatures for a long period.[38]

Freezing vegetables and maintaining their temperature at below −10 °C (14 °F) will prevent their spoilage for a short period, whereas a temperature of −18 °C (0 °F) is required for longer-term storage. The enzyme action will merely be inhibited, and blanching of suitably sized prepared vegetables before freezing mitigates this and prevents off-flavors developing. Not all micro-organisms will be killed at these temperatures and after thawing the vegetables should be used promptly because otherwise, any microbes present may proliferate.[40]

Sun-drying tomatoes in Greece

Traditionally, sun drying has been used for some products such as tomatoes, mushrooms and beans, spreading the produce on racks and turning the crop at intervals. This method suffers from several disadvantages including lack of control over drying rates, spoilage when drying is slow, contamination by dirt, wetting by rain and attack by rodents, birds and insects. These disadvantages can be alleviated by using solar powered driers.[34] The dried produce must be prevented from reabsorbing moisture during storage.[38]

High levels of both sugar and salt can preserve food by preventing micro-organisms from growing. Green beans can be salted by layering the pods with salt, but this method of preservation is unsuited to most vegetables. Marrows, beetroot, carrot and some other vegetables can be boiled with sugar to create jams.[38] Vinegar is widely used in food preservation; a sufficient concentration of acetic acid prevents the development of destructive micro-organisms, a fact made use of in the preparation of pickles, chutneys and relishes.[38] Fermentation is another method of preserving vegetables for later use. Sauerkraut is made from chopped cabbage and relies on lactic acid bacteria which produce compounds that are inhibitory to the growth of other micro-organisms.[5]

Top producers

Farmers' market showing vegetables for sale near the Potala Palace in Lhasa, Tibet
Vegetable shop in India
Vegetables in a supermarket in the United States
Vegetables in a supermarket in Canada

In 2010, China was the largest vegetable producing nation, with over half the world's production. India, the United States, Turkey, Iran and Egypt were the next largest producers. China had the highest area of land devoted to vegetable production, while the highest average yields were obtained in Spain and the Republic of Korea.[41]

Country Area cultivated
thousand hectares
(2,500 acres)
thousand kg/ha
(89 lbs/acre)
thousand tonnes
(1,100 short tons)
China 23,458 230 539,993
India 7,256 138 100,045
United States 1,120 318 35,609
Turkey 1,090 238 25,901
Iran 767 261 19,995
Egypt 755 251 19,487
Italy 537 265 14,201
Russia 759 175 13,283
Spain 348 364 12,679
Mexico 681 184 12,515
Nigeria 1844 64 11,830
Brazil 500 225 11,233
Japan 407 264 10,746
Indonesia 1082 90 9,780
South Korea 268 364 9,757
Vietnam 818 110 8,976
Ukraine 551 162 8,911
Uzbekistan 220 342 7,529
Philippines 718 88 6,299
France 245 227 5,572
Total world 55,598 188 1,044,380


The International Organization for Standardization (ISO) sets international standards to ensure that products and services are safe, reliable and of good quality. There are a number of ISO standards regarding fruits and vegetables.[42] ISO 1991-1:1982 lists the botanical names of sixty-one species of plants used as vegetables along with the common names of the vegetables in English, French and Russian.[43] ISO 67.080.20 covers the storage and transport of vegetables and their derived products.[44]

See also


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External links

  • Media related to Vegetable at Wikimedia Commons