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{{Short description|Edible plant part consumed as food}}
{{Other uses}}
{{Redirect-multi|2|Veggie|Veg||Veggie (disambiguation)|and|VEG (disambiguation){{!}}Veg (disambiguation)}}
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[[File:Marketvegetables.jpg|thumb|Vegetables in a [[Market (place)|market]] in the [[Philippines]]]]
[[File:Vegetables for sale in a market in France.jpg|thumb|Vegetables for sale in a market in France]]

'''Vegetables''' are edible parts of [[plant]]s that are consumed by humans or other animals as [[food]]. This original meaning is still commonly used, and is applied to plants collectively to refer to all edible plant matter, including [[edible flower|flowers]], [[fruit]]s, [[edible plant stem|stems]], [[leaf vegetable|leaves]], [[list of root vegetables|roots]], and [[list of edible seeds|seeds]]. An alternative definition is applied somewhat arbitrarily, often by [[culinary]] and cultural tradition; it may include savoury fruits such as [[tomato]]es and [[courgette]]s, [[flower]]s such as [[broccoli]], and seeds such as [[Pulse (legume)|pulses]], but exclude foods derived from some plants that are [[fruit]]s, flowers, [[nut (fruit)|nuts]], and [[cereal]] grains.

Originally, vegetables were collected from the wild by [[hunter-gatherer]]s and entered cultivation in several parts of the world, probably during the period 10,000&nbsp;BC to 7,000&nbsp;BC, when a new [[History of agriculture|agricultural way of life]] developed. At first, plants that grew locally were cultivated, but as time went on, trade brought common and 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. [[Agriculture in China|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 agriculture|subsistence farmers]] supplying the needs of their family for food, to [[agribusiness]]es 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 [[dietary fiber]]. Many nutritionists encourage people to consume plenty of fruit and vegetables, five or more portions a day often being recommended.

==Etymology==
The word ''[[:wikt:vegetable|vegetable]]'' was first recorded in English in the early 15th century. It comes from [[Old French]],<ref name="Online Etymology Dictionary">{{OEtymD|vegetable}}</ref> and was originally applied to all plants; the word is still used in this sense in biological contexts.<ref name="swedenborg"/> 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".<ref name="Online Etymology Dictionary"/>

The meaning of "vegetable" as a "plant grown for food" was not established until the 18th century.<ref>{{cite book | first=John | last=Ayto | title=Dictionary of Word Origins | publisher=Arcade Publishing | location=New York | year=1993 | isbn=978-1-55970-214-0 | oclc=33022699}}</ref> In 1767, the word was specifically used to mean a "plant cultivated for food, an edible herb or root". The year 1955 saw the first use of the shortened, slang term "veggie".<ref name="Online Etymology Dictionary2">{{OEtymD|veggie}}</ref>

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.<ref name="swedenborg">Swedenborg, Emanuel (2003). ''Swedenborg Concordance 1888''. Kessinger Publishing. p. 502. {{ISBN|0-7661-3728-7}}.</ref>

==Terminology==
{{See also|Fruit#Botanical vs. culinary}}
The exact definition of "vegetable" may vary simply because of the many parts of a plant consumed as food worldwide—roots, stems, leaves, flowers, [[fruit]]s, and seeds. The broadest definition is the word's use adjectivally to mean "matter of plant origin". More specifically, a vegetable may be defined as "any plant, part of which is used for food",<ref name=Dictionary.com>{{cite web |url=http://dictionary.reference.com/browse/vegetable |title=Vegetable |publisher=Dictionary.com |access-date=2015-03-03}}</ref> a secondary meaning then being "the edible part of such a plant".<ref name=Dictionary.com/> 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".<ref name=Sinha/><ref name=iarc>{{Cite book| url=https://books.google.com/books?id=RiKjvAzzwFYC&pg=PA |title=Fruits And Vegetables |isbn=978-92-832-3008-3|publisher=IARC |author1=Vainio, Harri  |author2=Bianchini, Franca   |name-list-style=amp |year=2003 |page=2}}</ref> Falling outside these definitions are edible fungi (such as [[edible mushroom]]s) and [[edible seaweed]] which, although not parts of [[plant]]s, are often treated as vegetables.<ref>{{cite web |url=http://www.spicesmedicinalherbs.com/fungi-vegetables.html |title=Fungi vegetables |work=Spices & Medicinal Herbs: Classification of vegetables |access-date=2015-03-24 |archive-date=2016-03-04 |archive-url=https://web.archive.org/web/20160304033725/http://www.spicesmedicinalherbs.com/fungi-vegetables.html |url-status=dead }}</ref>
[[File:FruitArrangement.jpg|thumb|An arrangement of fruits commonly thought of as culinary vegetables, including [[Maize|corn (maize)]], [[tomato]]es, and various [[Squash (fruit)|squash]]]]
In the latter-mentioned definition of "vegetable", which is used in everyday language, the words "fruit" and "vegetable" are mutually exclusive. "Fruit" has a precise [[botany|botanical]] meaning, being a part that developed from the [[ovary (botany)|ovary]] of a [[flowering plant]]. This is considerably different from the word's culinary meaning. While [[peach]]es, [[plum]]s, and [[orange (fruit)|oranges]] are "fruit" in both senses, many items commonly called "vegetables", such as [[eggplant]]s, [[bell pepper]]s, and [[tomato]]es, are botanically fruits. The [[Tomato#Fruit or vegetable|question of whether the tomato is a fruit or a vegetable]] found its way into the [[Supreme Court of the United States|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. However, the court acknowledged that, botanically speaking, a tomato is a fruit.<ref>[http://caselaw.lp.findlaw.com/scripts/getcase.pl?court=US&vol=149&invol=304 ''Nix v. Hedden'', 149 U.S. 304 (1893)] {{Webarchive|url=https://web.archive.org/web/20110628191931/http://caselaw.lp.findlaw.com/scripts/getcase.pl?court=US&vol=149&invol=304 |date=2011-06-28 }}. Findlaw.com.</ref>

==History==
Before the advent of [[agriculture]], humans were [[hunter-gatherer]]s. They foraged for edible fruit, nuts, stems, leaves, [[corms]], and tubers and [[Hunting|hunted]] animals for food.<ref>{{cite journal |author1=Portera, Claire C. |author2=Marlowe, Frank W. |title=How marginal are forager habitats? |journal= Journal of Archaeological Science  |volume=34 |issue=1 |pages=59–68 |date=January 2007|doi=10.1016/j.jas.2006.03.014 |bibcode=2007JArSc..34...59P }}</ref> [[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.<ref>{{cite book|title=The forest-garden farms of Kandy, Sri Lanka|author=Douglas John McConnell|year=1992|page=1|publisher=Food & Agriculture Org. |url=https://books.google.com/books?id=G3QPo7lThXsC&pg=PP1|isbn=978-92-5-102898-8}}</ref> 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.<ref>{{cite web|url=https://genographic.nationalgeographic.com/development-of-agriculture/ |title=The Development of Agriculture |work=National Geographic |access-date=2015-03-05 |url-status=dead |archive-url=https://web.archive.org/web/20160414142437/https://genographic.nationalgeographic.com/development-of-agriculture/ |archive-date=2016-04-14 }}</ref> [[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.<ref>{{cite book|author=Wharton, Clifton R. |title=Subsistence Agriculture and Economic Development|url=https://books.google.com/books?id=1M-lBNcTfzMC&pg=PA18 |year=1970 |publisher=Transaction Publishers |isbn=978-0-202-36935-8 |page=18}}</ref>

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 food|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 [[Aztec]]s in Central America was [[maize]] and they cultivated [[tomato]]es, [[avocado]]s, [[bean]]s, [[Capsicum|peppers]], [[pumpkin]]s, [[Squash (plant)|squashes]], [[peanut]]s, and [[amaranth]] seeds to supplement their [[tortilla]]s and [[porridge]]. In Peru, the [[Inca Empire|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.<ref name=Lambert>{{cite web |url=http://www.localhistories.org/food.html |title=A brief history of Food |author=Lambert, Tim |access-date=2015-03-04}}</ref>

In [[History of China#Ancient China|ancient China]], rice was the staple crop in the south and wheat in the north, the latter made into [[dumpling]]s, [[noodle]]s, and [[pancake]]s. Vegetables used to accompany these included [[Yam (vegetable)|yams]], [[soybean]]s, [[broad bean]]s, [[turnip]]s, [[spring onion]]s, 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.<ref name=Lambert/>

The mainstay of the [[Ancient Greece|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.<ref>{{cite book|author=Apel, Melanie Ann |title=Land and Resources in Ancient Greece|url=https://books.google.com/books?id=He_ecHencAoC&pg=PA10|year=2004 |publisher=Rosen Publishing Group |isbn=978-0-8239-6769-8 |page=10}}</ref> 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 [[Beetroot|beets]] rather than their roots.<ref>{{cite book|author=Forbes, Robert James |title=Studies in Ancient Technology|url=https://books.google.com/books?id=Y84UAAAAIAAJ&pg=PA99 |year=1965 |publisher=Brill Archive |page=99 }}</ref>

==Some common vegetables==
{| class="wikitable sortable"
! style="text-align:center; " colspan="6"|Some common vegetables
|-
! style="width:125px;" class=unsortable|Image
! style="" class=unsortable|Species
! style="" class=unsortable|Parts used
! style="" class=unsortable|Origin
! style="" class=unsortable|Cultivars
! style="" |World production<br>(×10<sup>6</sup>&nbsp;tons, 2018)<ref>{{cite web |url=http://www.fao.org/faostat/en/#data/QC |title=FAOSTAT |access-date=2020-08-24}} Aggregate data: may include official, semi-official or estimated data</ref>
|-
| [[File:Filoma-Kohl vor der Ernte.jpg|125px]] || ''[[Brassica oleracea]]'' || leaves, [[axillary bud]]s, stems, flower heads || Europe || [[cabbage]], [[Brussels sprouts]], [[cauliflower]], [[broccoli]], [[kale]], [[kohlrabi]],<br />[[red cabbage]], [[Savoy cabbage]], [[Chinese broccoli]], [[collard greens]]
|style="text-align:right" rowspan="2"| 69.4
|-
| [[File:Turnip 2622027.jpg|125px]] || ''[[Brassica rapa]]'' || root, leaves || Asia ||[[turnip]], [[Chinese cabbage]], [[napa cabbage]], [[bok choy]]
|-
| [[File:Raphanus sativus.jpg|125px]] || ''Raphanus sativus'' || root, leaves, seed pods, seed oil, sprouting || Southeastern Asia || [[radish]], [[daikon]], seedpod varieties
|style="text-align:right"|
|-
| [[File:7carrots.jpg|125px]] || ''Daucus carota'' || root, leaves, stems || Persia || [[carrot]]
|style="text-align:right"|40.0<ref group=n name=carrot>Includes both carrots and turnips.</ref>
|-
| [[File:CDC parsnip.jpg|125px]] || ''Pastinaca sativa'' || root || Eurasia || [[parsnip]]
|style="text-align:right"|
|-
| [[File:Uncommon beetroot colours.jpg|125px]] || ''[[Beta vulgaris]]'' || root, leaves || Europe and Near East || [[beetroot]], [[sea beet]], [[Swiss chard]], [[sugar beet]]
|style="text-align:right"|
|-
| [[File:Kropsla herfst.jpg|125px]] || ''Lactuca sativa'' || leaves, stems, seed oil || Egypt || [[lettuce]], [[celtuce]]
|style="text-align:right"|27.2
|-
| [[File:Bohne z01.JPG|125px]] || ''[[Phaseolus vulgaris]]''<br>''[[Phaseolus coccineus]]''<br>''[[Phaseolus lunatus]]'' || pods, seeds || Central and South America || [[green bean]], [[French bean]], [[runner bean]], [[haricot bean]], [[Lima bean]]
|style="text-align:right"|55.1<ref group=n name=dry>Sum of production of dry and green vegetables.</ref>
|-
| [[File:Tuinboon zaden in peul.jpg|125px]] || ''Vicia faba'' || pods, seeds || Mediterranean and Middle East || [[broad bean]]
|style="text-align:right"|4.9
|-
| [[File:NCI peas in pod.jpg|125px]] || ''Pisum sativum'' || pods, seeds, sprouts  || Mediterranean and Middle East || [[pea]], [[snap pea]], [[snow pea]], [[split pea]]
|style="text-align:right"|34.7<ref group=n name=dry/>
|-
| [[File:Various types of potatoes for sale.jpg|125px]] || ''Solanum tuberosum'' || tubers || South America || [[potato]]
|style="text-align:right"|368.1
|-
| [[File:Aubergine.jpg|125px]] || ''Solanum melongena'' || fruits || South and East Asia || [[eggplant]] (aubergine)
|style="text-align:right"|54.0
|-
| [[File:Tomato je.jpg|125px]] || ''Solanum lycopersicum'' || fruits || South America || [[tomato]], see [[list of tomato cultivars]]
|style="text-align:right"|182.2
|-
| [[File:Ogórki...jpg|125px]] || ''Cucumis sativus'' || fruits || Southern Asia || [[cucumber]], see [[list of cucumber varieties]]
|style="text-align:right"|75.2
|-
| [[File:Pumpkins Hancock Shaker village 2418.jpg|125px]] || ''Cucurbita spp.'' || fruits, flowers || Mesoamerica || [[pumpkin]], [[Squash (plant)|squash]], [[Cucurbita|marrow]], [[zucchini]] (courgette), [[gourd]]
|style="text-align:right"|27.6
|-
| [[File:Onions.jpg|125px]] || ''Allium cepa'' || bulbs, leaves || Asia || [[onion]], [[spring onion]], [[scallion]], [[shallot]], see [[list of onion cultivars]]
|style="text-align:right"|102.2<ref group=n name=dry/>
|-
| [[File:Garlic.jpg|125px]] || ''Allium sativum'' || bulbs || Asia || [[garlic]]
|style="text-align:right"|28.5
|-
| [[File:Leek.jpg|125px]]|| ''Allium ampeloprasum''||leaf sheaths||Europe and Middle East|| [[leek]], [[elephant garlic]]
|style="text-align:right"|2.2
|-
| [[File:Red capsicum and cross section.jpg|125px]] || ''[[Capsicum annuum]]'' || fruits || North and South America || [[Capsicum annuum|pepper]], [[bell pepper]], sweet pepper
|style="text-align:right"|40.9<ref group=n name=dry/>
|-
| [[File:Espinac 5nov.JPG|125px]]|| ''Spinacia oleracea''||leaves||Central and southwestern Asia|| [[spinach]]
|style="text-align:right"|26.3
|-
| [[File:Dioscorea polystachya (batatas).jpg|125px]] || ''Dioscorea spp.'' || tubers || Tropical Africa || [[Yam (vegetable)|yam]]
|style="text-align:right"|72.6
|-
| [[File:Ipomoea batatas 006.JPG|125px]] || ''Ipomoea batatas'' || tubers, leaves, shoots || Central and South America || [[sweet potato]], see [[list of sweet potato cultivars]]
|style="text-align:right"|91.9
|-
| [[File:Manihot esculenta dsc07325.jpg|125px]]|| ''Manihot esculenta''|| tubers || South America || [[cassava]]
|style="text-align:right"|277.8
|}
{{reflist|group=n}}

==Nutrition and health==
[[File:Ipomoea stir fry.jpg|thumb|Southeast Asian-style stir-fried ''[[Ipomoea aquatica]]'' in chili and [[sambal]]]]
[[File:Vegetable Cart in Guntur.jpg|thumb|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.<ref>{{Cite web |title=Vegetables |url=https://www.myplate.gov/eat-healthy/vegetables |access-date=2022-04-17 |website=www.myplate.gov |publisher=U.S. Department of Agriculture}}</ref> They supply dietary fiber and are important sources of essential vitamins, minerals, and trace elements. Particularly important are the antioxidant vitamins [[Vitamin A|A]], [[Vitamin C|C]], and [[Vitamin E|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.<ref name=Kerala/><ref name=Terry2011>{{cite book|author=Terry, Leon |title=Health-Promoting Properties of Fruits and Vegetables|url=https://books.google.com/books?id=gNEZoC86dMQC |year=2011 |publisher=CABI |isbn=978-1-84593-529-0 |pages=2–4}}</ref><ref>{{Cite journal|last1=Büchner|first1=Frederike L.|last2=Bueno-de-Mesquita|first2=H. Bas|last3=Ros|first3=Martine M.|last4=Overvad|first4=Kim|last5=Dahm|first5=Christina C.|last6=Hansen|first6=Louise|last7=Tjønneland|first7=Anne|last8=Clavel-Chapelon|first8=Françoise|last9=Boutron-Ruault|first9=Marie-Christine|date=2010-09-01|title=Variety in fruit and vegetable consumption and the risk of lung cancer in the European prospective investigation into cancer and nutrition|journal=Cancer Epidemiology, Biomarkers & Prevention|volume=19|issue=9|pages=2278–86|doi=10.1158/1055-9965.EPI-10-0489|issn=1538-7755|pmid=20807832|doi-access=free}}</ref> 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.<ref name=Harvard/>
The [[nutrition]]al content of vegetables varies considerably; some contain useful amounts of [[protein]] though generally they contain little [[fat]],<ref name="Li2008">{{cite book|author=Li, Thomas S.C. |title=Vegetables and Fruits: Nutritional and Therapeutic Values |url=https://books.google.com/books?id=n6zNOdkqmMYC|year=2008|publisher=CRC Press |isbn=978-1-4200-6873-3 |pages=1–2}}</ref> and varying proportions of [[vitamin]]s such as [[vitamin A]], [[vitamin K]], and [[vitamin B6|vitamin B<sub>6</sub>]]; [[provitamin]]s; [[dietary mineral]]s; and [[carbohydrate]]s.

The consumption of [[Crunchiness|crunchy]] and hard to chew foods, such as raw vegetables, during youth, while the bones are still growing, is needed for the human's, and other animals', jaws' proper development, and without their consumption, the jaws do not grow to their full size, thus not leaving enough room for the teeth to grow in correctly, causing [[Malocclusion|crooked]] and [[Impacted wisdom teeth|impacted]] teeth.<ref>{{Cite web |title=What teeth reveal about the lives of modern humans |url=https://news.osu.edu/what-teeth-reveal-about-the-lives-of-modern-humans/ |access-date=2022-04-16 |website=What teeth reveal about the lives of modern humans |language=en-us}}</ref><ref>{{Cite web |last=Boughner |first=Julia |title=Bad molars? The origins of wisdom teeth |url=http://theconversation.com/bad-molars-the-origins-of-wisdom-teeth-104835 |access-date=2022-04-16 |website=The Conversation |date=9 November 2018 |language=en}}</ref>

However, vegetables often also contain [[toxin]]s and [[antinutrient]]s which interfere with the absorption of nutrients. These include [[solanine|α-solanine]], [[chaconine|α-chaconine]],<ref>{{cite journal |doi=10.1016/j.foodchem.2005.08.046 |title=Balance between nutrients and anti-nutrients in nine Italian potato cultivars |year=2006 |last1=Finotti |first1=Enrico |last2=Bertone |first2=Aldo |last3=Vivanti |first3=Vittorio |journal=Food Chemistry|volume=99 |issue=4 |page=698}}</ref> [[enzyme inhibitor]]s (of [[cholinesterase]], [[protease]], [[amylase]], etc.), [[cyanide]] and [[linamarin|cyanide precursors]], [[oxalic acid]], [[tannin]]s and others.{{citation needed|date=April 2016}} 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 shoot]]s. These toxins can be deactivated by adequate cooking. Green potatoes contain [[glycoalkaloid]]s and should be avoided.<ref>{{cite web |url=http://www.cfs.gov.hk/english/programme/programme_rafs/programme_rafs_fc_02_05.html |title=Naturally Occurring Toxins in Vegetables and Fruits |date=2015-02-18 |work=Risk Assessment in Food Safety |publisher=Centre for Food Safety |access-date=2015-03-30}}</ref>

Fruit and vegetables, particularly leafy vegetables, have been implicated in nearly half the [[Gastroenteritis|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.<ref>{{cite journal |author=Centers for Disease Control and Prevention |year=2013 |title=Attribution of Foodborne Illness, 1998–2008 |journal=Estimates of Foodborne Illness in the United States |volume=19 |issue=3 |url=https://www.cdc.gov/foodborneburden/attribution-1998-2008.html }}</ref>

===Recommendations===
[[File:Vegetable consumption per capita, OWID.svg|thumb|upright=1.6|Vegetable consumption per capita in 2013<ref>{{cite web |title=Vegetable consumption per capita |url=https://ourworldindata.org/grapher/vegetable-consumption-per-capita |website=Our World in Data |access-date=5 March 2020}}</ref>]]

The USDA Dietary Guidelines for Americans recommends consuming five to nine servings of fruit and vegetables daily.<ref>[https://web.archive.org/web/20131207154611/http://www.cnpp.usda.gov/Publications/DietaryGuidelines/2000/2000DGBrochureFabulousFruits.pdf Fabulous fruits... versatile vegetables.] United States Department of Agriculture. Retrieved 2012-03-30.</ref> 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.<ref>{{cite web |url=http://www.heart.org/HEARTORG/Caregiver/Replenish/WhatisaServing/What-is-a-Serving_UCM_301838_Article.jsp |title=What is a serving? |date=2014-12-18 |publisher=American Heart Association |access-date=2015-09-26}}</ref> A variety of products should be chosen as no single fruit or vegetable provides all the nutrients needed for health.<ref name=Harvard>{{cite web |url=http://www.hsph.harvard.edu/nutritionsource/what-should-you-eat/vegetables-and-fruits/ |title=Vegetables and Fruits |publisher=Harvard School of Public Health |access-date=2015-09-14|date=2012-09-18 }}</ref>

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.<ref>[https://web.archive.org/web/20111005161248/http://www.the-food-guide-pyramid.com/japanese-diet.html The Japanese Diet]. the-food-guide-pyramid.com</ref> French recommendations provide similar guidelines and set the daily goal at five servings.<ref>[https://web.archive.org/web/20111005161248/http://www.the-food-guide-pyramid.com/frenchdiet.html The French Dietary Guide]. the-food-guide-pyramid.com</ref> In India, the daily recommendation for adults is {{convert|275|g}} of vegetables per day.<ref name=Kerala>{{cite web |url=http://www.celkau.in/Crops/Vegetables/vegetables.aspx |title=Vegetables |work=Infotech Portal |publisher=Kerala Agricultural University |access-date=2015-03-24}}</ref>

==Production==

===Cultivation===
{{further|Kitchen garden|Vegetable farming}}
[[File:AUSAID SOUTH AFRICA (10672860713).jpg|thumb|right|Growing vegetables in South Africa]]

[[File:Povrce_iz_vrta.jpeg|thumb|right|Fresh vegetables from garden in [[Croatia]]]]

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 [[Perennial plant|perennials]] but most are [[Annual plant|annuals]] and [[Biennial plant|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.<ref name=RHS/>

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 [[Horticultural fleece|fleece]], [[Cloche (agriculture)|cloches]], [[plastic mulch]], [[polytunnel]]s, and [[greenhouse]]s.<ref name=RHS>{{cite book |title=The Royal Horticultural Society Encyclopedia of Gardening |editor-last1=Brickell |editor-first1=Christopher |year=1992 |publisher=Dorling Kindersley |isbn=978-0-86318-979-1 |pages=303–08}}</ref> 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.<ref name=Field/>

[[File:John Deere tractor between cabbage rows.jpg|thumb|right|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 [[plough]]s, [[Harrow (tool)|harrows]], [[Drill (agriculture)|drill]]s, [[transplanter]]s, [[cultivator]]s, [[irrigation]] equipment, and [[Forage harvester|harvesters]]. New techniques are changing the cultivation procedures involved in growing vegetables with computer monitoring systems, [[GPS]] locators, and self-steer programs for driverless machines giving economic benefits.<ref name=Field>{{cite book|author1=Field, Harry|author2=Solie, John|title=Introduction to Agricultural Engineering Technology: A Problem Solving Approach |url=https://books.google.com/books?id=WWWc8VmdqDAC |year=2007 |publisher=Springer Science & Business Media|isbn=978-0-387-36915-0}}</ref>

===Harvesting===
[[File:Harvesting - geograph.org.uk - 290336.jpg|thumb|left|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.<ref name=Dixie>{{cite web |url=http://www.fao.org/docrep/008/a0185e/a0185e0a.htm |title=8. Post-harvest handling: Storage |author=Dixie, Grahame |year=2005 |work=Horticultural Marketing |publisher=FAO |access-date=2015-03-21}}</ref>

===Storage===
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.<ref name="PrakashGarg">{{cite book|author1=Garg & Prakash|author2=Garg, H.P. |title=Solar Energy: Fundamentals and Applications |url=https://books.google.com/books?id=-v_LfcIdJxIC&pg=PA191 |year=2000 |publisher=Tata McGraw-Hill Education |isbn=978-0-07-463631-2 |page=191}}</ref>

[[File:Gerooide aardappels.JPG|thumb|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.<ref name=Dixie/>

Proper post-harvest storage aimed at extending and ensuring shelf life is best effected by efficient [[cold chain]] application.<ref name=pxk>Kohli, Pawanexh (2008) "Why Cold Chain for Vegetables" in [http://crosstree.info/Documents/Care%20of%20F%20n%20V.pdf ''Fruits and Vegetables Post-Harvest Care: The Basics''] {{Webarchive|url=https://web.archive.org/web/20201103014943/http://www.crosstree.info/Documents/Care |date=2020-11-03 }}. Crosstree Techno-visors</ref> 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.<ref name=Sinha>{{cite book|author1=Sinha, Nirmal |author2=Hui, Y.H. |author3= Evranuz, E. Özgül |author4=Siddiq, Muhammad |author5=Ahmed, Jasim |title=Handbook of Vegetables and Vegetable Processing |url=https://books.google.com/books?id=Fz58umYZVK8C&pg=PT192 |year=2010|publisher=John Wiley & Sons |isbn=978-0-470-95844-5 |pages=192, 352}}</ref> 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.<ref name=Thompson>{{cite book|author= Thompson, A. Keith|title=Controlled Atmosphere Storage of Fruits and Vegetables |url=https://books.google.com/books?id=9DUh8FcKQtsC&pg=PA18|year=2010 |publisher=CABI |isbn=978-1-84593-647-1 |page=18}}</ref>

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.<ref>{{cite web |url=https://www.iaea.org/sites/default/files/publications/magazines/bulletin/bull18-0/18005480406su.pdf |title=Use of nuclear energy to preserve man's food |author=de Zeeuw, Dick |publisher=International Atomic Energy Agency |access-date=2015-03-22}}</ref>

===Preservation===
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 [[enzyme]]s and the spoilage caused by [[micro-organism]]s.<ref name=MAFF/> 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 [[carotenoid]]s, [[vitamin E]], [[Dietary element|minerals]]. and [[dietary fiber]].<ref>{{cite journal |author1=Rickman, Joy C. |author2=Bruhn, Christine M. |author3=Barrett, Diane M. |year=2007 |title=Nutritional comparison of fresh, frozen, and canned fruits and vegetables II. Vitamin A and carotenoids, vitamin E, minerals and fiber |journal=Journal of the Science of Food and Agriculture |volume=87 |issue=7 |pages=1185–96 |doi=10.1002/jsfa.2824 |bibcode=2007JSFA...87.1185R }}</ref>

[[File:Bean field Seabrook Farm1a33785v.jpg|thumb|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.<ref name=MAFF/>

[[Frozen food|Freezing]] vegetables and maintaining their temperature at below {{convert|-10|°C}} will prevent their spoilage for a short period, whereas a temperature of {{convert|-18|°C}} is required for longer-term storage. The enzyme action will merely be inhibited, and [[Blanching (cooking)|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.<ref>{{cite book|author1=Hui, Y.H. |author2=Ghazala, Sue|author3=Graham, Dee M. |author4=Murrell, K.D. |author5= Nip, Wai-Kit |title=Handbook of Vegetable Preservation and Processing|url=https://books.google.com/books?id=dVpQVJ46C5gC&pg=PA288 |year=2003 |publisher=CRC Press|isbn=978-0-203-91291-1|pages=286–90}}</ref>

[[File:Sun-dried tomatoes (4694706270).jpg|thumb|left|Sun-drying tomatoes in Greece]]
Traditionally, [[Drying (food)|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 power]]ed driers.<ref name="PrakashGarg"/> The dried produce must be prevented from reabsorbing moisture during storage.<ref name=MAFF/>

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.<ref name=MAFF/> [[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 [[Pickling|pickles]], [[chutney]]s and relishes.<ref name=MAFF>{{cite book |title=Home preservation of Fruit and Vegetables |year=1968 |publisher=Ministry of Agriculture, Fisheries and Food |pages=1–6 }}</ref> [[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.<ref name=Sinha/>

===Top producers===
{{See also|List of countries by vegetable production}}[[File:Vegetable Shop in Meppadi.jpg|thumb|Vegetable shop in India]]
[[File:Veggies.jpg|thumb|Vegetables in a [[supermarket]] in the United States]]
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.<ref>{{cite web |url=http://www.fao.org/docrep/018/i3107e/i3107e.PDF |title=Table 27 Top vegetable producers and their productivity |work=FAO Statistical Yearbook 2013 |publisher=Food and Agriculture Organization of the United Nations |page=165 |access-date=2015-09-14}}</ref>

{| class="sortable wikitable" style="text-align:right"
|-
! Country !! Area cultivated <br>thousand hectares <br>(2,500 acres)!! Yield <br>thousand kg/ha <br>(890 lb/acre) !! Production <br>thousand tonnes <br>(1,100 [[short ton]]s)
|-
| style="text-align:left"|China || 23,458 || 230 || 539,993
|-
| style="text-align:left"|India || 7,256 || 138 || 100,045
|-
| style="text-align:left"|United States || 1,120 || 318 || 35,609
|-
| style="text-align:left"|Turkey || 1,090 || 238 || 25,901
|-
| style="text-align:left"|Iran || 767 || 261 || 19,995
|-
| style="text-align:left"|Egypt || 755 || 251 || 19,487
|-
| style="text-align:left"|Italy || 537 || 265 || 14,201
|-
| style="text-align:left"|Russia || 759 || 175 || 13,283
|-
| style="text-align:left"|Spain || 348 || 364 || 12,679
|-
| style="text-align:left"|Mexico || 681 || 184 || 12,515
|-
| style="text-align:left"|Nigeria || 1844 || 64 || 11,830
|-
| style="text-align:left"|Brazil || 500 || 225 || 11,233
|-
| style="text-align:left"|Japan || 407 || 264 || 10,746
|-
| style="text-align:left"|Indonesia || 1082 || 90 || 9,780
|-
| style="text-align:left"|South Korea || 268 || 364 || 9,757
|-
| style="text-align:left"|Vietnam || 818 || 110 || 8,976
|-
| style="text-align:left"|Ukraine || 551 || 162 || 8,911
|-
| style="text-align:left"|Uzbekistan || 220 || 342 || 7,529
|-
| style="text-align:left"|Philippines || 718 || 88 || 6,299
|-
| style="text-align:left"|France || 245 || 227 || 5,572
|-class="sortbottom"
| style="text-align:left"|'''Total world''' || '''55,598''' || '''188''' || '''1,044,380'''
|}

==Standards==
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.<ref name="fvdp">{{cite web |title=ISO - 67.080 - Fruits. Vegetables |url=https://www.iso.org/ics/67.080/x/ |website=www.iso.org |publisher=[[International Organization for Standardization]] |access-date=12 April 2024 |archive-url=https://web.archive.org/web/20230924184352/https://www.iso.org/ics/67.080/x/ |archive-date=24 September 2023 |url-status=live}}</ref> 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.<ref>{{cite web |url=http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=6728 |title=ISO 1991-1:1982: Vegetables – Nomenclature |publisher=International Organization for Standardization |access-date=2015-03-20}}</ref> ISO 67.080.20 covers the storage and transport of vegetables and their derived products.<ref>{{cite web |url=http://www.iso.org/iso/home/store/catalogue_ics/catalogue_ics_browse.htm?ICS1=67&ICS2=080&ICS3=20& |title=67.080.20: Vegetables and derived products  |publisher=International Organization for Standardization |access-date=2015-03-20}}</ref>

==See also==
{{portal|Food}}
<!-- Please keep entries in alphabetical order & add a short description [[WP:SEEALSO]] -->
* [[List of vegetable dishes]]
* [[List of vegetables]]
* [[Market garden]]ing
* [[Perennial vegetable]]
* [[Post-harvest losses (vegetables)]]
* [[Vegetable carving]]
* [[Plant Resources of Tropical Africa]]
* [[World Vegetable Center]]

==References==
{{Reflist|30em}}

==External links==
{{cookbook}}
{{commons}}
* {{Cite EB1911|wstitle=Vegetable|short=x}}

{{Agriculture country lists}}
{{Vegetarianism}}
{{Plant-based diets}}
{{Authority control}}

[[Category:Vegetables| ]]
[[Category:Types of food]]
[[Category:Agricultural products]]