Now Onion is in the News ! ..
Onion [ Allium cepa ] family Alliaceae
is one of the most important commercial
vegetables. It is grown in western, northern as well as in southern India.
Maharashtra, Gujarat, Uttar Pradesh, Orissa, Karnataka, Tamilnadu, Madhya
Pradesh, Andhra Pradesh and Bihar are Major onion growing states in India.
India stands 2nd position
in Onion production after China in the World. In India, Gujarat stands 2nd
position in Onion cultivation after Maharashtra state. The productivity of
Onion is 12580kg/Ha all over the India while In Gujarat state, the productivity
is highest [ 22120 kg/ha ] .
Onion is a cool season crop. However
it can be grown under a wide range of climatic conditions. It grows well under
mild climate without extreme heat or cold or excessive rainfall. In areas where
average annual rainfall exceeds 75-100 cm in the monsoon periods, it can be
grown only as a summer crop.
The ideal temperature requirement of
the onion crop is 12.8-21 C for growth development and 15.5-25 C for bulb
development. Very low temperature in the early stages favors bolting, where as
sudden rise in temperature favour early maturity in Rabi, resulting in small
–sized bulbs.
Onion can be grown on all type of
soils. However, Goradu, and medium black soils are best for its successful
production. Good drainage, weeds free plots and presence of organic matter
favor production of good crop. It cannot be grown in alkaline or low-lying
marshy lands. The optimum pH is 5.8-6.5.
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