Thousands of years ago, people from east to south Asia settled
throughout river deltas and domesticated wild rice and now it is
the staple food for seventeen countries in Asia and the pacific,
countries in Africa, seven countries in Latin, America and
Caribbean and one is the near east.Rice is the life-line of Asia.
More than 90% of the world's rice crop is produced here. Paddling
is done in rice for easier transplanting and to reduce water
infiltration. It destroys the soil physical structure, which has
implications for the following wheat crop. Direct seeding is pretty
alternative to transplanting but there are certain constraints
facing to adopt this methodology. Weeds and rice emerge the same
time and this causes a shift in weed flora towards predominantly
grass-weeds. Germination is a problem for direct seeding in Rice.
Seed priming can increase the speed and uniformity of germination
when the seeds are subsequently planted. Osmopriming is a special
type of seed priming that has been used to describe the soaking of
seeds in aerated low water potential solutions.It has been
successfully introduced in cereals including rice.
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