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  1. Carrots have a swollen taproot that can be up to 25 cm long. This is generally a temperateor high altitude tropical cropand is biennial. But the variety ‘Uberlandia’ does well in the lower tropics and can set seed in the same season. Carrot rootstaste best when harvested in cooler weather.  
  2. Turnips are a cruciferous crop (cabbage family) grown for the edible fleshy taproot. The leaves are also a good nutritious green leafy vegetable. There are also varieties that have been developed as a forage crop.  
  3. This oilseed plant originated from eastern Africa. Vernonia is grown in tropical locations that are within 20º of the equator because better seed is produced from flowers under short day conditions.  
  4. Wild mung bean is a perennial, vining, nitrogen-fixing plant with edible beans and tubers. This plant is rarely cultivated but rather pods and tubers are collected from wild plants. It has potential for human food, as well as a green manure or cover crop.  
  5. Sunflowers are tall showy, usually yellow flowers grown for their seeds. The flower head is composed of the showy perimeter ray flowers and the inner disc florets which produce the seeds. As well as being an ornamental plant that attracts pollinators, sunflower seeds are pressed for oil or used...  
  6. Kenaf is an upright, herbaceous, annual plant that can reach 5 m in height. It is used for fodder, fiber, and the young leaves as a vegetable.  
  7. Sesame is an erect, herbaceous, annual, broad-leaved plant, growing to 2.5 m in height. It is one of the oldest cultivated crops and mainly grown as a field crop for the seeds and especially oil extracted from the seeds.  
  8. The Potato originally comes from the Andes of South America. It has been cultivated there for centuries. Potatoes can be grown at most latitudes, but tend to get more diseases in hot and humid climates, such as those at low elevation in the tropics. There are around 5,000 varieties of Potatoes in...  
  9. Most carrot varieties are temperate biennial plants requiring two years to complete the life cycle. Normally, a cold period during the dormant winter season is required for the first year plants to send up flowering stalks that produce flowers and seeds during the second growing season. Dr....  
  10. Wild carrots (Daucus carota) are native in Western Europe, the Near East, and the Mediterranean region. Wild carrots now are widely distributed in temperate Europe, Asia, and in parts of Africa, Australia, and the Americas. It has become a common weed species in croplands in many portions of its...