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Oca was introduced to Europe in 1830 as a competitor to the potato, and to New Zealand as early as 1860. In New Zealand, oca has become a popular table vegetable and is called yams (although not a true yam). It is available in various colors, including yellow, orange, pink, apricot, and traditional red. [3]
Māori traditions maintain that taewa were cultivated well before Europeans first visited New Zealand. [1] [2] Despite this, James Cook is presumed by academic scholars to have introduced potatoes to New Zealand in his first voyage (1769), as is Marion de Fresne. [4] More South American varieties came with sealers and whalers in the early 19th ...
It is grown and sold in New Zealand as "New Zealand yam" (although not a true yam), and varieties are now available in yellow, orange, apricot, and pink, as well as the traditional red-orange. [9] The leaves of scurvy-grass sorrel (O. enneaphylla) were eaten by sailors travelling around Patagonia as a source of vitamin C to avoid scurvy.
"Sweet potatoes have a starchy texture and sweet flesh," Gavin said. "The major types are grouped by the color of the flesh, not by the skin." In the grocery store, you'll likely see orange, white ...
In New Zealand, the Māori varieties bore elongated tubers with white skin and a whitish flesh, [65] which points to pre-European cross-Pacific travel. [66] Known as kumara (from the Māori language kūmara), the most common cultivar now is the red 'Owairaka', but orange ('Beauregard'), gold, purple and other cultivars are also grown. [67] [68]
Mixing up yams and sweet potatoes isn't anything new! The confusion can actually be traced back to the 1930s when Louisiana sweet potato growers decided to develop a new, softer type of sweet ...
The seed yams are perishable and bulky to transport. Farmers who do not buy new seed yams usually set aside up to 30% of their harvest for planting the next year. Yam crops face pressure from a range of insect pests and fungal and viral diseases, as well as nematodes. Their growth and dormant phases correspond respectively to the wet season and ...
Yam tubers. Tuberous stem. Apios americana (hog potato or groundnut) Cyperus esculentus (tigernut or chufa) Helianthus tuberosus (Jerusalem artichoke or sunchoke) Hemerocallis spp. (daylily) Lathyrus tuberosus (earthnut pea) Oxalis tuberosa (oca or New Zealand yam) Plectranthus edulis and P. esculentus (kembili, dazo, and others) Solanum ...