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Soybeans Today January 2000

Scientists complete checkoff-funded projects

By Howell Medders, Fred Miller and Rich Maples

Picture of a tractor at sunset.All good things must come to an end, including these projects funded by the Arkansas Soybean Promotion Board:

Production of high-quality seed of Maturity Group IV soybeans using planting date, foliar fungicides and Phomopsis seed decay resistance. -John Rupe

Rupe, a University of Arkansas plant pathologist, says this was a study of factors affecting seed quality of Maturity Group IV soybeans. It identified practices that improve the chances of producing good seed.

"Group IV and other early maturing varieties were developed in northern states and are adapted to a cooler climate," noted Rupe. "They lack genetic resistance to a common fungus that causes Phomopsis seed decay in warmer climates."

The study found that:

  • Mid- to late-May planting produces the best seed quality.
  • The further north, the better the chance for good seed quality.
  • Benomyl is marginally effective in fields with a history of Phomopsis seed decay.
  • Even with May planting in northern counties and the use of Benomyl, seed quality of Group IV varieties will vary from year to year due to weather.

New carbon absorbents from soy hulls for the chemical, food and water purification industries. -Andy Proctor

A ton of soy hulls, worth $20 to $100, can produce 400 pounds of activated carbon, potentially worth $8,000, using a process developed by the University of Arkansas.

Proctor and fellow food scientist Ravin Gnanasambandam developed a process for converting hulls to a carbon absorbent material for industrial use. The project received the 1999 American Oil Chemists Society's Archer Daniels Midland Research Award.

Large amounts of activated carbon are used as an absorbent in industrial processes such as purifying water, processing petrochemical products and making cosmetics or pharmaceuticals.

"The challenge now is to take this new technology to commercialization," Proctor said in his final report.

"We are working with Scientific Ag Industries, a manufacturer of activated carbon from only renewable resources. Due to the large amount of soy hulls available, the company is optimistic about the future of this soy application."


Creating new consumer products from soy lecithin for the food, cosmetic and pharmaceutical industries. -Andy Proctor

Foods rich in medium chain triglycerides (MCT) are needed by many people who can't digest fats and oils in conventional foods. Checkoff funds supported a project led by U of A food scientists Andy Proctor and Jean-Francois Muellenet to develop soy lecithin as a stabilizer in MCT food products and for other potential uses.

Proctor said Abitec Corp. is looking at lecithin-based formulations of MCT yogurt, milk shakes and ice cream products.

"Abitec is exploring the potential for marketing the lecithin formulations to MCT food manufacturers. These formulations are readily adapted to development of nutritional foods for the medical and sports foods markets," said Proctor.

"Soy lecithin is also very effective in creating stabilized MCT emulsions for cosmetic products and as a potential carrier for pharmaceuticals."


Soybean production management alternatives under full flexibility. -Robert Coats

Coats, a U of A economist, noted that the 1996 Farm Bill gave producers the flexibility to plant commodities to optimize their farm income. But any hope of increased profitability was shattered by the start of the global financial crisis in 1997.

"The crisis deflated our commodity prices and reduced our ability to compete in export markets," Coats says.

Using USDA and actual farm figures, Coats estimated that the net worth of a 1,380-acre Delta soybean, rice and wheat farm, farmer owned and operated with a 25 percent debt to asset ratio, dropped from more than $66,000 in 1996 to about $36,600 in 1997, to about $8,800 in 1998, and to a negative $6,900 for the 1999 production year.

"The study concluded that many farmers, in the face of severe competition in the global economy, won't survive with traditional farm production systems," says Coats. To remain viable, farmers have to:

  • Make full use of their land resources with precision leveling, improved drainage, etc.
  • Ensure an adequate water supply with wells, reservoirs, water delivery and recovery systems, etc.
  • Practice timely, optimal production management practices.
  • Optimize the use of technology for maximum yields and minimal variability in yields.

"This would allow producers to reduce their per unit costs, be competitive domestically and improve their ability to compete in export markets," says Coats.

Soybeans Today January 2000
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