EDEN BIOSCIENCE Corporation has received registration from the U.S. Environmental Protection Agency for ProAct, a new generation of foliar-applied harpin protein designed to increase field crop yields.
The company plans to register ProAct in all states except California for use during the 2005 season.
“Eden Bioscience specifically developed the next generation harpin protein used in ProAct to enhance yield in row crops such as corn, cotton, and rice,” said Rhett Atkins, president and CEO.
“In over 20 commercial and replicated cotton trials conducted in 2004 by independent cotton experts, ProAct increased yields across all tested application rates and timings.
“In cotton, we believe the 1-ounce-per-acre application rate will provide the most attractive return on investment for growers with an average yield increase of 11 percent when applied with glyphosate herbicide and 9 percent when applied after glyphosate,” said Atkins.
“In 11 replicated corn trials conducted by leading independent corn experts, ProAct increased yields on average by 8 bushels per acre at the 0.5-ounce-per-acre rate when applied with the first application of glyphosate herbicide.
“We believe the economic benefit to growers is favorable in both crops.
“Using the data from cotton trials, at a yield of 800 pounds, a cotton price of 50 cents per pound, and our target grower price of approximately $6 per ounce, this would calculate into a profit increase of about $38 an acre for an approximate $6 investment.
“Using the data from corn trials, at an average corn price of $2 per bushel, this would calculate into a profit increase of about $13 an acre for an approximately $3 investment.”
“In addition to validating ProAct performance in the field, one of our main objectives was to demonstrate the results of using ProAct in conjunction with existing foliar sprays so there would be no extra application costs.
“In both cotton and corn, positive yield increases were seen when ProAct was applied along with the crop's first application of glyphosate herbicide on tolerant varieties and hybrids. We will test and expect ProAct to produce similar results when used with most other post-emergence herbicide programs, though ProAct also may be applied with insecticides, fungicides, or alone,” Atkins said.
“Last year, we also tested ProAct in three replicated rice trials conducted by independent rice experts and found that ProAct produced an average yield increase of 6 bushels per acre at the one-half ounce application rate.
“Using an average price of $3 per bushel, this would calculate into a profit increase of about $15 an acre for approximately a $3 investment. We will continue to research the most effective ways to use ProAct in other field crops in 2005.”
Corn growers will be trying ProAct on their fields this summer as part of a special ProAct Partnership Program co-sponsored by Eden Bioscience and the National Corn Growers Association (NCGA). In the program, NCGA members will be using ProAct on trial plots of about 20 acres each. They will monitor yield increases and other beneficial results from ProAct treatments.
The program also will provide further information on ProAct performance in a variety of postemergence weed management systems, growing conditions, and tillage systems across the Corn Belt. NCGA members also qualify for a $1 per ounce discount on ProAct.
In cotton, ProAct can be teamed with N-Hibit Seed Treatment, another harpin product introduced by Eden Bioscience this year and granted full EPA registration last year.
Research conducted at the University of Arkansas found that N-Hibit reduced root knot nematode eggs per dry root weight by 55 percent. This data and other related research findings were presented at the Beltwide Cotton Conferences earlier this year.
For more information about ProAct or N-Hibit Seed Treatment, contact a local agri-retailer or visit the Eden Bioscience's Web Site at www.edenbio.com  or call the Eden Bioscience customer service line at 888-879-2420.