Pearl millet ( Cenchrus americanus, commonly known as the synonym Pennisetum glaucum) is the most widely grown type of millet. It has been grown in Africa and the Indian subcontinent since prehistoric times. The center of diversity, and suggested area of domestication, for the crop is in the Sahel zone of West Africa.
Description
Pearl millet has
ovoid grains of length, the largest kernels of all varieties of millet (not including
sorghum). These can be nearly white, pale yellow, brown, grey, slate blue or purple. The 1000-seed weight can be anything from 2.5 to 14 g with a mean of 8 g.
The height of the plant ranges from .
Other languages
Also known as 'Bajra' in
Hindi language and
Urdu language, 'Sajje' in
Kannada, 'Kambu' in
Tamil language, 'Sajjalu' in
Telugu language, 'Bajeer' in
Kumaoni language, 'Bajri' in Gujarati and 'Maiwa' in
Hausa language, 'Mexoeira' in
Mozambique, 'Baajri' in
Marathi Language, 'Za' in the
Dagbani language of Ghana, 'Zuk' in
Tyap language of Nigeria, 'Mawele' in
Swahili language, 'Mwere' in
Meru language of Kenya, 'Mahangu' in
Kwanyama dialect of Namibia.
Cultivation
Pearl millet is well adapted to growing areas characterized by
drought, low soil fertility, low moisture, and high temperature. It performs well in soils with high salinity or low pH. Because of its tolerance to difficult growing conditions, it can be grown in areas where other
cereal crops, such as
maize or
wheat, would not survive. Pearl millet is a summer annual crop well-suited for double cropping and rotations. The grain and forage are valuable as food and feed resources in Africa, Russia, India and China.
Today, pearl millet is grown on over of land worldwide. It accounts for about 50% of the total world production of millets.
World production of millets has been stable during the 1980s. According to FAO, of millet were planted in 1987 with an average production of only .
Structure and physical properties
Pearl millet varieties from the world collection probably have more variation in physical characteristics than any other millet.
Kernel shape has different classifications: obovate, hexagonal,
lanceolate, globular and elliptical. In Africa, pearl millet is classified as either globular or lanceolate and hexagonal. Most of the millets are very similar to each other in basic structures, although there are some very specific differences.
Composition
The composition of variety
Changara of pearl millet can be affected by both environment and genetics. Pearl millet usually has higher protein and fat contents than sorghum or other millets because the kernel is a naked
caryopsis.
| +Proximate analysis of pearl millet
!Millet type
!Protein
!Fat
!Ash
!Total DF |
| Pearl millet | 12.8 | 6.0 | 1.2 | 7.1 |
Values are expressed on a dry matter basis.
Culinary use
Pearl millet is commonly used to make
bhakri flatbread. It is also boiled to make a
Tamils porridge called
kamban choru or
kamban koozh.
In Rajasthani cuisine italic=yes is a traditional dish made with pearl millet flour and yogurt. It is usually made in summers to be served along with meals.
made of pearl millet flour, known as italic=yes or italic=yes (बाजरे की रोटी) in Punjab, Rajasthan and Haryana, bajrichi bhakri (बाजरीची भाकरी) in Maharashtra and bajra no rotlo (બાજરા નો રોટલો) in Gujarat, India, are served with various types of kadhi and Curry in meals. Bajhar ji maani prepared in Tharparkar, Sindh is served with various types of kadhi and bhaaji.
In Namibia, pearl millet flour is used to make Oshifima, a staple food in northern part of Namibia.
Around the world
India
India is the largest producer of pearl millet. India began growing pearl millet between 1500 and 1100 BCE.
It is currently unknown how it made its way to India,
but it likely arrived originally from across Africa, and via the Red Sea during Indus Valley Trade networks.
Rajasthan is the highest-producing state in India. The first hybrid of pearl millet developed in India in 1965 is called the HB1.
Sajje is the local name of the pearl millet in Karnataka and is mostly grown in the semiarid districts of North Karnataka. Sajje is milled and used for making flatbread called 'sajje rotti' and is eaten with yennegai (stuffed brinjal) and yogurt.
Kambu is the Tamil name of pearl millet and is a common food across the Indian state of Tamil Nadu. It is the second important food for Tamil people consumed predominantly in the hot humid summer months from February through May every year. It is made into a gruel and consumed along with buttermilk or consumed as dosa or Idli.
Pearl millet is called bajra in states. There was a time when pearl millets along with and sorghum were the staple food crops in these states but it reduced to a mere cattle fodder crop after the Green Revolution in the 1960s.
Africa
The second largest producer of pearl millet and the first to start cultivation, Africa has been successful in bringing back this lost crop.
Sahel
Pearl millet is an important food across the
Sahel region of Africa. It is a main staple (along with
sorghum) in a large region of northern
Nigeria,
Niger,
Mali and
Burkina Faso. In Nigeria it is usually grown as an
intercrop with sorghum and
cowpea, the different growth habits, growth period and drought vulnerability of the three crops maximising total productivity and minimising the risk of total crop failure. It is often ground into a flour, rolled into large balls, parboiled, liquefied into a watery paste using fermented milk, and then consumed as a beverage. This beverage, called "fura" in Hausa, is a popular drink in northern Nigeria and southern Niger. Pearl millet is a food widely used in
Borno state and its surrounding states, it is the most widely grown and harvested crop. There are many products that are obtained from the processing of the crop.
Namibia
In
Namibia, pearl millet is locally known as "mahangu" and is grown mainly in the north of that country, where it is the
staple food. In the dry, unpredictable climate of this area it grows better than alternatives such as
maize. The regions in which this crop is produced are: Zambezi, Kavango East, Kavango West, Ohangwena, Omusati, Oshana, Oshikoto, and; in parts of the Otjozondjupa region, in the Tsumkwe area.
Mahangu is usually made into a porridge called "oshifima" (or "oshithima"), or fermented to make a drink called "ontaku" or "oshikundu".
Traditionally, the mahangu is pounded with heavy pieces of wood in a 'pounding area'. The floor of the pounding area is covered with a concrete-like coating made from the material of termite mounds. As a result, some sand and grit gets into the pounded mahangu, so products like oshifima are usually swallowed without chewing.
Some industrial grain processing facilities now exist, such as those operated by Namib Mills. Efforts are also being made to develop smaller scale processing using food extrusion and other methods. In a food extruder, the mahangu is milled into a paste before being forced through metal die. Products made this way include breakfast cereals, including and porridge, pasta shapes, and "rice".
Research and development
Recently more productive varieties of pearl millet have been introduced, enabling farmers to increase production considerably.
To combat the problem of micronutrient malnutrition in Africa and Asia, a study of serving iron-Biofortification pearl millets which is bred conventionally without genetic modification to a control group is proved to have higher level of iron absorbance by the group.
Around 1000 pearl millet genotypes (including 31 wild genotypes) have been sequenced, identifying the genetic diversity of this staple crop and aiding breeding to select for particular characteristics. A reference genotype of pearl millet () has been fully sequenced, which holds around 38,579 genes. Some of these genes are for wax biosynthesis, which is known to be involved in tolerance to abiotic stresses in pearl millet.[
] The International Crops Research Institute for the Semi-Arid Tropics is evaluating crop wild relatives and will introgress abiotic tolerant traits into cultivated genotypes and make them available for pearl millet improvement.
A 2015 study provided a genetic map.
Pests
Insect pests include
Anoecia corni,
An. cornicola,
Anoecia fulviabdominalis,
Anoecia vagans,
Aphis gossypii,
Forda hirsuta,
Forda orientalis,
Geoica utricularia,
Hysteroneura setariae,
Melanaphis sacchari,
Protaphis middletonii,
Rhopalosiphum maidis,
R. rufiabdominale,
Schizaphis graminum,
Sipha elegans,
Sipha maydis,
Sitobion avenae,
Sit. leelamaniae,
Sit. pauliani,
Tetraneura africana,
Tetraneura basui,
Tetraneura fusiformis, and
T. yezoensis.
Africa
The larvae of several insect species, primarily belonging to the orders
Coleoptera,
Lepidoptera,
Diptera, and
Hemiptera, as well as
Orthoptera adults, are persistent pearl millet pests in the
Sahel.
[S. Krall, O. Youm, and S. A. Kogo. Panicle insect pest damage and yield loss in pearl millet.][Jago, N. D. 1993. Millet pests of the Sahel: biology, monitoring and control. Chatham, UK: Natural Resources Institute. 66 pp. .][Matthews, M. and N. D. Jago. 1993. Millet pests of the Sahel: an identification guide, Chatham, UK: Natural Resources Institute. (80 p.) .] The following pest species are reported for northern Mali.
-
Coniesta ignefusalis (pearl millet stem-borer; Lepidoptera, Crambidae) attacks pearl millet, and also sorghum and maize, especially in the Sahel. It is the main pearl millet pest in Senegal.
-
Heliocheilus albipunctella (pearl millet head-miner; Lepidoptera, Noctuidae) attacks pearl millet. The larvae bore in a spiral path, destroying florets or grain.
-
Geromyia penniseti (millet grain midge): The larvae eat the developing grain and form white pupal cases attached to the tips of spikelets. Reported losses in Senegal are as high as 90 percent.
-
Pachnoda interrupta (millet beetle)
-
Psalydolytta fusca and Ps. vestita (pearl millet blister beetle; Coleoptera, Meloidae) attack pearl millet. They are major millet pests in Mali.
-
Rhinyptia infuscata (Scarabaeidae, Rutelinae, Anomalini) is a nocturnal beetle, recorded as a locally important pest on millet flowers in Niger. Farmers in Niger often fight the species using fires set at night. It is also reported as sorghum pest in Senegal, and as a pest on maize, where the larvae attack the roots.
-
Sesamia calamistis (pink stem borer), especially in lowland forests. This species and the sugarcane borer ( Eldana saccharina) are the primary pests of the pearl millet in Ivory Coast.
-
(Diptera, Cecidomyiidae): millet grain midge ( Geromyia penniseti), sorghum midge ( Contarinia sorghicola), and African rice gall midge ( Orseolia oryzivora).
-
Dysdercus volkeri (cotton-stainer; Hemiptera, Pyrrhocoridae) attacks flowers.
Grasshoppers that frequently attack millets in the Dogon country of Mali are Oedaleus senegalensis, Kraussaria angulifera, Cataloipus cymbiferus, and Diabolocatantops axillaris.[
]
In northern Ghana, Poophilus costalis (spittle bug) is reported as a millet pest, as well as Dysdercus volkeri, Heliocheilus albipunctella, Coniesta ignefusalis, and caterpillars of Amsacta moloneyi and Helicoverpa armigera.
In northern Nigeria, heavy infestations of Hycleus species, including Hycleus terminatus (syn. Mylabris afzelli), Hycleus fimbriatus (syn. Mylabris fimbriatus), Hycleus hermanniae (syn. Coryna hermanniae), and Hycleus chevrolati (syn. Coryna chevrolati), have affected early plantings of pearl millet crops.
Other regions
In South India, pests include the shoot fly Atherigona approximata.
In North America, regular pests include the chinch bug Blissus leucopterus.
==Gallery==
Further reading
