Indian origin scientist developing wireless soil sensors to improve farming

October 11th, 2008 - 1:56 pm ICT by ANI  

Washington, Oct 11 (ANI): A scientist of Indian origin, along with his team, is developing wireless transceivers and sensors that would collect and send data about soil moisture within a field, which would improve farming.

Ratnesh Kumar, the scientist in question from Iowa State University, is hoping that the sensors will also collect data about soil temperature and nutrient content.

The prototypes are about 2 inches wide, 4 inches long and less than an inch thick.

A major goal is to build small sensors that can do their work entirely underground. The sensors wont need wires or above-ground antennas, so farmers could work right over the top of them.

The sensors would also be able to report their locations. That would make it easy to find sensors if a plow were to move them or when batteries need to be replaced.

Kumar, an Iowa State professor of electrical and computer engineering, said the sensors are designed to be buried about a foot deep in a grid pattern 80 to 160 feet apart.

The sensors would relay data along the grid to a central computer that would record information for researchers or farmers.

The sensors could help researchers understand precisely how water moves through a field. They could help them develop better models to predict crop growth and yield.

They could also help them understand the carbon and nitrogen cycles within soils, as well as help farmers manage their nutrient and water resources, which could maximize yields and profits, and minimize environmental impacts.

If nutrients are in excess of whats needed, it doesnt help the yield, Kumar said. Those resources just drain into the environment, he added.

Stuart Birrell, an Iowa State associate professor of agricultural and biosystems engineering and a part of the sensor research team, said the project will provide the kind of real-time, high-resolution data that researchers and producers have been looking for.

A challenge of precision agriculture is collecting data at a high enough resolution that you can make good decisions, Birrell said.

These sensors would provide very high resolution data for producers and researchers. They would give us another data layer to explain differences in yield and help us make management decisions, he added.

According to Kumar, the sensors have worked underground in preliminary, point-to-point tests. A network of multiple sensors will be buried in a research field later this fall for more testing and development.

The goal is to hopefully have these sensors in production agriculture, he said. But first we need to develop them and answer more questions about how cost-effective they could be, he added. (ANI)

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