AWD irrigation can save 30 p.c underground water: Experts

http://www.bssnews.net/newsDetails.php?cat=0&id=157916&date=2011-01-28

AWD irrigation can save 30 p.c underground water: Experts

RANGPUR, Jan 28 (BSS) – Agri-scientists and experts have said that popularization and mass adoption of Alternate Drying and Wetting (AWD) irrigation technology in Boro farming can save 30 percent underground water.

Mass applications of the technology can reduce five number irrigations compared to the farmers’ general practice, reduce 30 litres diesel consumption per hectare for irrigation, and produce 500 kg more paddy per hectare.

They said that the country would be benefited by about Taka 6,000 crore annually by adopting the AWD technology for farming Boro in 4.85 million hectares land only for reduced irrigation costs and increased paddy yields in addition to saving huge water.

The ecology, environment, bio- diversity would be improved with retardation in the desertification process as 30 percent less water would be lifted for irrigation purposes every year saving its underground reserve.

Liaison Scientist of International Rice Research Institute (IRRI) for Bangladesh and former Director General of Bangladesh Rice Research Institute (BRRI) Dr M A Hamid Miah recently narrated BSS about the AWD technology.

Rice scientist Dr MA Mazid said that efforts of the agri- related departments and research organisations are continuing to popularize the technology among the farmers.

Principal Scientific Officer of BRRI and its Rangpur Station Chief Dr Gous Ali narrated the ongoing and expanding field level AWD activities to popularize the easiest technology.

They said that the farmers generally consume 3,000 to 5,000 litres irrigated waters to produce one kilogram paddy under different topographical locations, when the paddy plants hardly need 1,500 to 2,000 litres for the same if AWD technology was used.

Dr Hamid Miah said that AWD is a simplest technology of determining irrigation times in Boro fields and it requires a 25 cm long PVC pipe or hollow bamboo pieces or even waste bottles of cold drinks like coco cola etc.

Fifteen cm on one side of the pipe is perforated for easy horizontal movement of water and it is to be installed vertically with its perforated portion under the ground level when the soil within the pipe is scoped out so that soil at the lower end of the pipe is visible.

The farmers should irrigate fields in such a way that water does not overtop the imperforated portions, watch leaching down of water through the pipes, and irrigate when the soil at the bottom of the pipes will be visible with no water standing on the soil hat.

If the AWD were adopted for farming Boro in 48.5 lakh hectares during this season, the country would get benefit of Taka 6,000 crore from additional paddy productions, less use of diesel and electricity alone, the scientists and experts said.

Dr Mazid today told BSS that expanded use of AWD would also allow lifting 30 percent less underground waters annually for irrigation purposes to increase its reserves and get an uncountable national benefit amid the formidable threats of climate changes.

They suggested for ensuring mass use of AWD technology through coordinated efforts of all for availing its full advantages through additional paddy productions and uncountable benefits by saving huge underground waters.

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