Aerial Imagery System Helps Save Water

"Agricultural Research Service (ARS) scientists are developing a system that saves water by using aerial imagery and ground-based sensors to determine the irrigation needs of small sections of cultivated fields.

Conventional irrigation practices, even when based on modern management and water application techniques, can be wasteful because they assume crop water needs are the same throughout an entire field, according to Douglas Hunsaker, an agricultural engineer at the ARS Arid-Land Agricultural Research Center in Maricopa, Ariz. It also is extremely difficult to go into a large field and visually observe and quantify different water needs for specific areas.

Farmers are beginning to use remote sensing technology to monitor crop growth, fertilizer needs and field conditions. Hunsaker's goal is to combine one remote sensing aerial image of a field with a system of wireless sensors tied to computer software that will accurately determine the irrigation needs of small areas on a daily basis throughout the season.

Ideally, farmers could identify areas with high or low water needs with data transmitted to their computers and, using either a drip or a sprinkler system, adjust irrigation levels based on the data. The technology could be particularly useful in the parched Southwestern United States, where conserving water is a major priority."

By Dennis O'Brien (ARS)

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Source: USDA (ARS) http://www.ars.usda.gov

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Food "Tattoos" an Alternative to Labels for Identifying Fruit

"Those small and sometimes inconvenient sticky labels on produce may eventually be replaced by laser “tattoo” technology now being tested by Agricultural Research Service (ARS) and University of Florida (UFL) scientists.

Called laser etching, the new technology puts a tattoo on grapefruit and other produce so it can be identified at the supermarket checkout lines. The technology was invented by former UFL scientist Greg Drouillard, now with Sunkist Growers. Grapefruit has always been labeled with sticky paper labels that mar the fruit and stick to one another in storage. The labels are also easily removed, making it more difficult to track a piece of produce back to the source if the need arises.

Microbiologist Jan Narciso at the ARS Citrus and Subtropical Products Laboratory in Winter Haven, Fla., and UFL researcher Ed Etxeberria investigated laser technology as an alternative to sticky paper labels.

A carbon dioxide laser beam was used to etch information into the first few outer cells of the fruit peel. The mark can’t be peeled off, washed off or changed, offering a way to trace the fruit back to its original source. This permanent etching into the fruit peel does not increase water loss or the entrance of food pathogens or postharvest pathogens if the laser label is covered with wax"

By Sharon Durham, (ARS)

Source: USDA (ARS) http://www.ars.usda.gov

Looking for effective fertilizers or plant nutrients, please visit our website at www.ferticell.com or call (602)233-2223.