Vicia sativa
- "Vicia heterophylla" redirects here, based on the plant described by Carl Presl. The plant thus named by V.N. Voroshilov is Vicia japonica as described by Asa Gray.
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| Vicia sativa flowers and leaves | |
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V. sativa
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| Vicia sativa |
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Vicia angustifolia L. |
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Vicia sativa, known as the common vetch, garden vetch, tare or simply "the 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 livestock fodder. There is no firm evidence that this is the same as the "tare" in some English translations of the Bible (as in the "Parable of the Tares") – ryegrass (Lolium) is another candidate.[citation needed]
There are at least four subspecies generally accepted:
- Vicia sativa ssp. cordata (Hoppe) Asch. & Graebn.
- Vicia sativa ssp. nigra (L.) Ehrh. – Narrow-leaved Vetch[1] (= ssp./var. angustifolia, ssp. consobrina, ssp. cordata (Hoppe) Batt., ssp. cuneata, ssp. heterophylla, var. minor, var. nigra)
- Vicia sativa ssp. sativa (= var. linearis, ssp. notata)
- Vicia sativa ssp. segetalis (Thuill.) Arcang. (sometimes included in ssp. nigra)
Description
Vicia sativa is a sprawling annual herb, a member of the pea family Fabaceae, 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.[2] The fruit is a legume pod up to 6 or 7 centimeters long which is hairy when new and smooth later, brown or black when ripe. It contains 4-12 seeds.[3][4]
Cultivation
Sown for fodder,[5] 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.[citation needed]
After the seed is sown and the land carefully harrowed, a light roller ought to be drawn across, to smooth the surface and permit the scythe to work without interruption. Also, the field should be watched for several days to prevent pigeons, which are remarkably fond of tares, from devouring much of the sown seed.[citation needed]
Horses thrive very well on Common Vetch, even better than on clover and rye grass; the same applies to fattening cattle, which feed faster on vetch than on most grasses or other edible plants. Danger often arises from livestock eating too much vetch, especially when podded; colics and other stomach disorders are apt to be produced by the excessive loads devoured.
Cereal grains can be sown with vetch so it can use their stronger stems for support, attaching via tendrils.[6] When grown with oats or other grasses, the vetch can grow upright; otherwise its weak stems may sprawl along the ground.[7] Several cultivars are available for agricultural use,[8] and as for some other legume crops, rhizobia can be added to the seed.[7]
Pests that attack this crop include the powdery mildew fungus Erysiphe pisi, the pea aphid Acyrthosiphon pisum, the corn earworm (Heliothis zea), the fall armyworm (Spodoptera frugiperda), and spider mites of genus Tetranychus.[7]
During the early 20th century a mutant of the common vetch arose with lens-shaped seeds resembling those of the lentil, leading to vetch invasions of lentil fields. D. G. Rowlands showed in 1959 that this was due to a single recessive mutation. The transition from traditional winnowing to mechanized farming practices largely solved this problem.[9]
History
Common Vetch has also been part of the human diet, as attested by carbonised remains found at early Neolithic sites in Syria, Turkey, Bulgaria, Hungary and Slovakia. It has also been reported from predynastic sites of ancient Egypt, and several Bronze Age sites in Turkmenia and Slovakia. However, definite evidence for later vetch cultivation is available only for Roman times.[10]
Notes
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Hackney, P. (Ed). 1992. Stewart and Corry's Flora of the North-east of Ireland. Third edition. Institute of Irish Studies The Queen's University of Belfast.ISBN 0 85389 446 9
- ↑ FAO Animal Feed Resources
- ↑ 7.0 7.1 7.2 FAO Crop Profile
- ↑ Lloveras, J., et al. Varieties of vetch (Vicia sativa L.) for forage and grain production in Mediterranean areas.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Daniel Zohary and Maria Hopf, Domestication of plants in the Old World, third edition (Oxford: University Press, 2000), p. 119.
External links
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