And what may be an additional plus point, this rice line does not contribute much towards global warming unlike the regular rice varieties. The new rice variety called “aerobic rice” has been developed by plant breeders at the University of Agricultural Sciences(UAS) in Bangalore. Begun as part of an all-India project of the Indian Council of Agricultural Research’s (ICAR), it has completed an independent trial for three years.
However, since entering into the central trial is the official requirement for a state-wide release, the UAS is trying to make a beginning with a release in the dry zones of Karnataka early next year. “I am proceeding with release formalities at the UAS, Bangalore starting January, 2009. That is the earliest we can do it. Since water is a scare resource, we need to show results at the earliest,” Dr H E Shashidhar, the developer of aerobic rice, told Deccan Herald.
mooter_page_section=”AdUnit2″;
|
|
 |
|
|
|
|
|
Around the same time, Raipur’s Indira Gandhi Krishi Vishwavidyalaya may also release the line for the farmers in Chhattishgarh. Due to their low water use efficiency, the existing rice varieties need 3,000 to 5,000 litres of water to produce one kg of grain. Usage of excess water also reduces the efficiency of the fertiliser.
On the contrary, the new line’s water requirement has been cut down by 40-50 per cent, making it suitable for cultivation in the state’s drought-prone areas.
Moreover, because of the absence of standing water for days, it does not generate the green house gas methane, which is one of the major contributors to global warming. Normally, methane is produced during irrigated rice cultivation.
“Because of standing water in paddy fields, soil organic matter is decomposed in an anaerobic (without oxygen) processes generating methane,” said Dr Shashidhar, who is currently working in Barwale Foundation in Hyderabad.
As there will be no such decomposition during the cultivation of this line, it is called aerobic rice. He claims that with the rice root running almost three times deeper, there would be better water absorption and air circulation.
While the new variety gave a yield of about 55 quintals per hectare, which is par with the regular varieties, it becomes ready for harvesting between 120 and 130 days. The UAS has completed trials at six locations between 2005 and 2007 in collaboration with the International Rice Research Institute (IRRI) in Manila. Trials took place at Bangalore, Raipur, Cuttack, Faizabad, Coimbatore and Hazaribagh.
