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Useful Tropical Plants

Arachis hypogaea

L.

Fabaceae

+ Synonyms

Lathyrus esquirolii H.Lév.

Arachis nambyquarae Hoehne

Common Name: Peanut

Arachis hypogaea
Composite picture - large and small varieties of peanut on left; shelled and skinned seeds top right; just harvested stem with fruits bottom right
Photograph by: Peanut_three_in_one.jpg
Creative Commons Attribution-Share Alike 3.0
Arachis hypogaea Arachis hypogaea Arachis hypogaea Arachis hypogaea

General Information

Peanut is an annual plant with erect or prostrate stems up to 70cm long. The root system consists of a well-developed taproot with many lateral roots, up to 135cm deep, but generally restricted to the upper layers of the soil[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].
A very commonly used food plant, valued mainly for its edible seed and oil, but also having medicinal and other uses. It is widely cultivated throughout the tropics and sub-tropics for its seed, there are many named varieties[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].

Known Hazards

Of greatest concern is possible contamination of damaged or spoiled seeds with the teratogenic, carcinogenic aflatoxins. Two principal toxins, aflatoxins B, and G, and their less toxic dihydro derivatives, aflatoxins B2 and G2 are formed by the aflatoxin producing moulds (Aspergillus flavus et al). Prevention of mould growth is the mainstay, there being no satisfactory way to remove the toxins from feed and foods (however, peanut oils are free of aflatoxins because of alkaline processing)[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
].

Botanical References

200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

Range

S. America - possibly in the region of Paraguay, Bolivia, Argentina and Brazil.

Habitat

Not known in a truly wild state.

Properties

Edibility Rating *  *  *  *
Medicinal Rating *  *
Other Uses Rating *  *  *
HabitAnnual
Height0.50 m
PollinatorsInsects
Self-fertileYes
Cultivation StatusCultivated

Cultivation Details

Peanuts can be grown from the tropics to the warm temperate zone, with commercial crops succeeding between latitudes 40° south and 40° north[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
] and up to an elevation of 1,500 metres[
300
Title
Vegetables in the Tropics
Publication
 
Author
Tindall. H. D.
Publisher
MacMillan, Oxford.
Year
1983
ISBN
0-333-24268-8
Description
An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
]. Crops can be grown at further distances from the equator but yields are likely to be poor[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. An average monthly temperature of 22 - 27°c produces the best crops, whilst growth ceases at about 15°c[
300
Title
Vegetables in the Tropics
Publication
 
Author
Tindall. H. D.
Publisher
MacMillan, Oxford.
Year
1983
ISBN
0-333-24268-8
Description
An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
,
310
Title
Plant Resources of Southeast Asia
Publication
 
Author
 
Website
http://proseanet.org/
Publisher
 
Year
0
ISBN
 
Description
Lots of information on the uses of the plants of SE Asia.
]. An annual precipitation in the range 750 - 1,250mm is preferred, though as little as 500mm can be sufficient if well distributed[
300
Title
Vegetables in the Tropics
Publication
 
Author
Tindall. H. D.
Publisher
MacMillan, Oxford.
Year
1983
ISBN
0-333-24268-8
Description
An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
]. A distinct dry period is required to allow the seed to ripen[
300
Title
Vegetables in the Tropics
Publication
 
Author
Tindall. H. D.
Publisher
MacMillan, Oxford.
Year
1983
ISBN
0-333-24268-8
Description
An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
].
Prefers a light humus-rich well-drained soil in a warm sunny sheltered position, though it will tolerate heavier soils[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
,
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
]. Heavy clays and any soils that tend to form a crust or cap after rain are unsuitable since the fertilized flowers need to be able to penetrate the soil easily[
300
Title
Vegetables in the Tropics
Publication
 
Author
Tindall. H. D.
Publisher
MacMillan, Oxford.
Year
1983
ISBN
0-333-24268-8
Description
An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
]. Plants prefer hot dry conditions when the crop is ripening[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. Peanuts are quite tolerant of acid soils, and aluminium, requiring a minimum of lime for acceptable yields[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
]. Tolerates a pH in the range 4.3 to 8.7[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
], though around 6.5 is preferred[
300
Title
Vegetables in the Tropics
Publication
 
Author
Tindall. H. D.
Publisher
MacMillan, Oxford.
Year
1983
ISBN
0-333-24268-8
Description
An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
].
Yields average about 1 tonne of unshelled nuts per hectare, about 80% of this weight is edible seeds (erect forms) and 60 - 75% (running forms)[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
There are three main groups of cultivars:-
'Virginia' has large seeds.
'Valencia' has four seeds per pod.
'Spanish' has the smallest seeds[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
There are running and erect forms in each group[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. The erect forms mature more quickly and are therefore more likely to succeed in cooler areas[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. 'Early Spanish' matures in 105 days and has cropped reliably as far north as Canada[
183
Title
Cornucopia - A Source Book of Edible Plants.
Publication
 
Author
Facciola. S.
Publisher
Kampong Publications
Year
1990
ISBN
0-9628087-0-9
Description
Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.
]. 'Spanish' matures in 110 days and crops in Canada if grown in a light sandy soil with southern exposure[
183
Title
Cornucopia - A Source Book of Edible Plants.
Publication
 
Author
Facciola. S.
Publisher
Kampong Publications
Year
1990
ISBN
0-9628087-0-9
Description
Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.
].
Plants are, in general, self-pollinating, though occasional outcrossing by bees occurs[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
].
All types of peanut are daylength neutral and photoperiod does not appear to affect flower initiation[
300
Title
Vegetables in the Tropics
Publication
 
Author
Tindall. H. D.
Publisher
MacMillan, Oxford.
Year
1983
ISBN
0-333-24268-8
Description
An excellent, in-depth look at the main vegetable crops that can be grown in the Tropics, plus many less well-known plants.
].
This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. When removing plant remains at the end of the growing season, it is best to only remove the aerial parts of the plant, leaving the roots in the ground to decay and release their nitrogen.

Edible Uses

Seed - raw, cooked or ground into a powder. Peanuts are a staple food in many tropical zones and are widely exported to temperate area of the world. The seeds have a delicious nutty flavour and can be eaten on their own either raw or roasted[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
]. The seeds are commonly ground up and used as peanut butter in sandwiches etc[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
]. They can also be cooked in a variety of dishes and are also ground into a powder when they can be used with cereals to greatly improve the protein content of breads, cakes etc[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
]. The seed is very rich in protein and oil, it is also a good source of minerals and vitamins, especially the B complex[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. A nutritional analysis is available[
218
Title
Medicinal Plants of China
Publication
 
Author
Duke. J. A. and Ayensu. E. S.
Publisher
Reference Publications, Inc.
Year
1985
ISBN
0-917256-20-4
Description
Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.
].

A non-drying edible oil is obtained from the seed[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. This is one of the most commonly used edible oils is the world. It is similar in composition to olive oil and is often used in cooking, making margarines, salad oils etc[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].

The presscake from oil extraction is rich in protein. It is made into groundnut flour, which is used in many human foods. Fermented groundnut cake is eaten fried in Indonesia[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
]. The oilseed cake is said to be a good source of arginine and glutamic acid, used in treating mental deficiencies[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
].

The roasted seed makes an excellent coffee substitute[
7
Title
Encyclopaedia of Medicinal Plants.
Publication
 
Author
Chiej. R.
Publisher
MacDonald
Year
1984
ISBN
0-356-10541-5
Description
Covers plants growing in Europe. Also gives other interesting information on the plants. Good photographs.
,
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
].

Young pods may be consumed as a vegetable[
46
Title
Dictionary of Economic Plants.
Publication
 
Author
Uphof. J. C. Th.
Publisher
Weinheim
Year
1959
ISBN
-
Description
An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.
,
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
].

Young leaves and tips are suitable as a cooked green vegetable[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
]. Javanese use the tips for lalab (a vegetable salad served with sambal), and germinating seeds to make toge[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
].

Medicinal

The oil from the seed is aperient, demulcent, emollient and pectoral[
218
Title
Medicinal Plants of China
Publication
 
Author
Duke. J. A. and Ayensu. E. S.
Publisher
Reference Publications, Inc.
Year
1985
ISBN
0-917256-20-4
Description
Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.
]. The seed is used mainly as a nutritive food[
268
Title
The Encyclopedia of Herbs and Herbalism
Publication
 
Author
Stuart. M. (Editor)
Publisher
Orbis Publishing. London.
Year
1979
ISBN
0-85613-067-2
Description
Excellent herbal with good concise information on over 400 herbs.
].
The seeds have been used in folk medicine as an anti-inflammatory, aphrodisiac and decoagulant[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
]. Peanuts play a small role in various folk pharmacopoeias. In China the nuts are considered demulcent, pectoral, and peptic; the oil aperient and emollient, taken internally in milk for treating gonorrhoea, externally for treating rheumatism[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
]. In Zimbabwe the peanut is used in folk remedies for plantar warts. Haemostatic and vasoconstrictor activity are reported. The alcoholic extract is said to affect isolated smooth muscles and frog hearts like acetylcholine. The alcoholic lipoid fraction of the seed is said to prevent haemophiliac tendencies and for the treatment of some blood disorders (mucorrhagia and arthritic haemorrhages) in haemophilia[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
].

Other Uses

The seeds yield a non-drying oil that has a wide range of uses including the manufacture of pharmaceuticals, soaps, cold creams, pomades and lubricants, paints, emulsions for insect control, and fuel for diesel engines[
268
Title
The Encyclopedia of Herbs and Herbalism
Publication
 
Author
Stuart. M. (Editor)
Publisher
Orbis Publishing. London.
Year
1979
ISBN
0-85613-067-2
Description
Excellent herbal with good concise information on over 400 herbs.
,
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
].

The presscake from oil extraction is rich in protein. It finds industrial application in the production of glues; sizes for paper; starches for laundering and textile manufacture[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].
Protein from groundnut cake is made into a wool-like fibre, which can be blended with wool or rayon[
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].

The shells are used fir furfural, as fuel, fertilizer, mulch, in the manufacture of particle board and building blocks, and can be used as a source of activated carbon, combustible gases, organic chemicals, reducing sugars, alcohol and extender resins[
269
Title
Handbook of Energy Crops
Publication
 
Author
Duke. J.
Publisher
-
Year
1983
ISBN
-
Description
Published only on the Internet, excellent information on a wide range of both temperate and tropical plants.
,
299
Title
Protabase - Plant Resources of Tropical Africa.
Publication
 
Author
 
Website
http://www.prota.org
Publisher
 
Year
0
ISBN
 
Description
An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
].

Propagation

Seed - pre-soak for 12 hours in warm water and sow the seed 5- 7cm deep in situ.

Comments

José Waizel 08th December 2014 15:09
their common names are: Cacahuate, mani [spanish]. its used in mexican (aztec) traditional medicine to treat epileptic seizures.

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