Edit Plant: Tropaeolum tuberosum

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The '''mashua''' (see below for other names) is a [[perennial plant]] grown in the [[Andes]] for its edible [[tuber]], which is eaten as a [[root vegetable]]. It is a major food source there. The tuber is rather peppery in flavor<ref>[http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2007/11/24/HOFKT0IEM.DTL&hw=perennially&sc=237&sn=006 10 perennial veggies to grow, San Francisco Gate]</ref> when raw, but this quality disappears when cooked. It is related to garden nasturtiums, being of the ''[[Tropaeolum]]'' genus, not to be confused with the genus ''[[Nasturtium]]''. {{Inc| Tropaeolum tuberosum, Ruiz & Pav. Root producing a pyriform irregular tuber 2-3 in. long: st. climbing, glabrous: lvs. peltate near the base, cordate-orbicular, 5-lobed nearly or quite to the middle: fls. rather small, the calyx and long spur red, the petals yellow, small and nearly erect and little exceeding the calyx. Peru and Bolivia.—Plant stands some frost. In Peru, the tubers are eaten, and the plant is sometimes cult. in Eu. for the tubers. It appears in the American catalogues of European dealers. The tubers are usually boiled, or said to be eaten in a partially dried condition. {{SCH}} }} ==Cultivation== The plant grows vigorously even in marginal [[soil]]s and in the presence of [[weed]]s. It is also well-adapted to high-altitude [[subsistence agriculture]], and gives high yields; 30 [[tonne]]s per [[hectare]] are yielded at a height of 3000 metres, but up to 70 tons per hectare have been produced under research conditions<ref name="siu">[http://www.siu.edu/~ebl/leaflets/mashua.htm Mashua Ethnobotanical Leaflet, Southern Illinois University]</ref>. Its extraordinary resistance to [[insect]], [[nematode]], and [[bacteria]]l pests is attributed to high levels of [[isothiocyanate]]s. In Colombia, it is planted as a [[companion planting|companion crop]] to repel pests in [[potato]] fields. ===Propagation=== {{edit-prop}} ===Pests and diseases=== {{edit-pests}} ==Species==  ==Gallery== <gallery perrow=5> File:Peru Oca y mashua.jpg Image:Upload.png| photo 1 Image:Upload.png| photo 2 Image:Upload.png| photo 3 </gallery> ==References== *[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963    ==External links== *{{wplink}} {{stub}} __NOTOC__

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