New Lure Target's Almond Enemy No. 1: Navel Orangeworm

USDA Agricultural Research Service - Thu, 08/28/2014 - 12:21
New Lure Target's Almond Enemy No. 1: Navel Orangeworm / August 28, 2014 / News from the USDA Agricultural Research Service
Read the magazine story to find out more.

 Adult navel orangeworm moth (Amyelois transitella) on an almond. Link to photo information
ARS researchers and their colleagues have developed a new lure that is seven times more powerful than the current standard for bringing the navel orangeworm, the number one insect pest of almonds, into monitoring traps. Click the image for more information about it.

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New Lure Target's Almond Enemy No. 1: Navel Orangeworm

By Marcia Wood
August 28, 2014

Almond orchard experiments and laboratory tests led by U.S. Department of Agriculture (USDA) scientists and their colleagues are yielding good news for almond fans and bad news for almond's No. 1 insect enemy, the navel orangeworm. Headed by USDA chemist John J. Beck, the team has developed a promising new combination of all-natural compounds to lure navel orangeworm moths into monitoring traps.

According to Beck, preliminary tests at his Albany, California, laboratory and in two orchards in that state—the nation's leader in almond production—indicate that the experimental lure is at least seven times more powerful than the most commonly used alternative. Beck works at the Western Regional Research Center operated by the Agricultural Research Service (ARS), the chief intramural scientific research agency of USDA.

The new lure's effectiveness is due, at least in part, to its ability to attract both male and female navel orangeworm moths. The conventional lure can't do that.

The monitoring traps in which the new lure might someday be used are typically hung from almond tree branches. Growers and their pest control advisors use the traps to detect incoming navel orangeworm moths and to monitor their numbers, then use that information to determine the best time to apply insecticide. The new lure may provide a more accurate picture of moth numbers within an orchard.

Navel orangeworm larvae that emerge from eggs laid by female moths can damage almonds by feeding on the kernels or by contaminating them with mold-forming Aspergillus flavus or A. parasiticus fungi. The fungi are of concern because they can produce cancer-causing compounds known as aflatoxins. Almond processors spend millions of dollars annually inspecting harvested almonds to keep any nuts that contain unsafe levels of these toxins out of the food supply.

The almond studies help improve food safety and reduce food waste, two USDA top priorities. An article in the August 2014 issue of Agricultural Research magazine has more details about the research.

Beck and Douglas M. Light, Wai S. Gee, and Noreen E. Mahoney, all with ARS at Albany; Daniel D. Cook, with ARS at Logan, Utah; Bradley S. Higbee of Paramount Farming Co., LLC, and other colleagues, conducted the research with funding from ARS, the California Department of Food and Agriculture, the Almond Board of California, the California Pistachio Research Board, and Paramount Farming; and with the assistance of D&D Farms, S&J Ranch, Strain Ranches, Nickels Soil Laboratory, and others.

Categories: USDA

Process Turns Barley into High-protein Fish Food

USDA Agricultural Research Service - Mon, 07/14/2014 - 08:10
Process Turns Barley into High-protein Fish Food / July 14, 2014 / News from the USDA Agricultural Research Service
Read the magazine story to find out more.

 Three rainbow trout swimming over rocks. Link to photo information
A patented new process turns barley into a perfect high protein feed for carnivorous fish like salmon and rainbow trout as a plant-based alternative to fishmeal, which is made from small ocean fish. Click the image for more information about it.

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Process Turns Barley into High-protein Fish Food

By Sandra Avant
July 14, 2014

A process that improves the nutritional value of barley for use in fish feed has been developed by scientists at the U.S. Department of Agriculture (USDA) and Montana Microbial Products LLC (MMP) of Missoula, Montana.

Barley typically contains about 10 to12 percent protein, but 40 to 60 percent protein is needed in diets of carnivorous fish like rainbow trout and salmon. The new enzymatic process patented by the Agricultural Research Service (ARS) and MMP concentrates protein by removing the carbohydrates in barley and turning them into an ethanol coproduct, utilizing all the nutrients in the grain.

ARS is USDA's principal intramural scientific research agency, and this research supports the USDA priority of promoting international food security.

The new high-protein product produced by this technology should help fill the gap for more plant-based protein sources as alternatives to fishmeal, which is made from small ocean fish, according to fish physiologist Rick Barrows, with the ARS Small Grains and Potato Germplasm Research Unit in Aberdeen, Idaho. In addition, barley protein concentrate has less variability in composition and is less expensive than most fishmeals.

Barrows, who works in Bozeman, Montana, and his team tested barley protein concentrate in rainbow trout and found digestibility—the percentage of nutrients available to the fish—to be as high as 95 percent. The product also was tested in Atlantic salmon by research leader William Wolters and fish physiologist Gary Burr at the ARS National Cold Water Marine Aquaculture Center in Franklin, Maine.

Atlantic salmon were fed a diet containing either 11 percent or 22 percent barley protein concentrate. The growth of those salmon was not significantly different from salmon fed a standard fishmeal diet. Also, the fish that ate the 22 percent barley protein concentrate diet had significantly greater energy retention compared to fish fed the other diets. Higher energy retention demonstrates that the fish are using the feed more efficiently.

MMP has built a commercial prototype plant in Montana to produce barley protein concentrate for trout feeding trials. The company also plans to build a commercial facility in the near future.

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