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Vicia sativa

Common vetch
Vicia April 2008-1.jpg
Vicia sativa flowers and leaves
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Vicieae
Genus: Vicia
Species: V. sativa
Binomial name
Vicia sativa
L.
Synonyms

Vicia angustifolia L.
Vicia angustifolia Reichard
Vicia cordata Hoppe
Vicia cuneata Gren. & Godr.
Vicia cuneata Guss.
Vicia heterophylla C.Presl
Vicia segetalis Thuill.


Vicia angustifolia L.
Vicia angustifolia Reichard
Vicia cordata Hoppe
Vicia cuneata Gren. & Godr.
Vicia cuneata Guss.
Vicia heterophylla C.Presl
Vicia segetalis Thuill.

Vicia sativa, known as the common vetch, garden vetch, tare or simply vetch, is a nitrogen fixing leguminous plant in the family Fabaceae. Although considered a weed when found growing in a cultivated grainfield, this hardy plant is often grown as green manure or fodder.

There are at least four subspecies generally accepted:

Vicia sativa is a sprawling annual herb, with hollow, four-sided, hairless to sparsely hairy stems which can reach two meters in maximum length.

The leaves are stipulate, alternate and compound, each made up of 3 to 8 opposite pairs of linear, lance-shaped, oblong, or wedge-shaped, needle-tipped leaflets up to 3.5 centimeters long. Each compound leaf ends in a branched tendril.

The pealike flowers occur in the leaf axils, solitary or in pairs. The flower corolla is 1 to 3 centimeters in length and bright pink-purple in color, more rarely whitish or yellow. The flowers are mostly visited by bumblebees.

The fruit is a legume pod up to 6 or 7 centimeters long, which is hairy when new, smooth later, then brown or black when ripe. It contains 4-12 seeds.

Sown for fodder, the seed is sown densely, up to 250  kilograms per hectare. However, when grown for seed, less seed should be used; otherwise the crop will be too thick, reducing flower and seed production. When meant for seed, sowing is done early in the planting season for good returns; but, when for green food, any time in spring is suitable. Sometimes, a full crop can be obtained even when sown as late as summer, though sowing so late is not recommended.


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Wikipedia

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