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DUMAS, Ark. -- The arrival of kudzu bug to Arkansas is not “if,” but “when,” Jeremy
Greene professor of entomology at Clemson University, told a crowd of more than 325
on Friday at the Tri-State Soybean Forum.
“You will get kudzu bugs here in Arkansas,” he said. “It’s just a matter of time.”
Greene presented results of research on this invasive pest that exploded from the
time it was first found in a handful of counties in Georgia in 2009 to span the South
to the eastern edge of the Mississippi River. Kudzu bugs, which can produce two generations
a growing season, can impact soybean yields.
Greene said research indicates that pyrethroids seem to have the greatest effect on
kudzu bug populations and the key is to keeping the bug in hand is controlling the
Aerial blightTerry Spurlock, extension plant pathologist for the University of Arkansas System
Division of Agriculture, discussed research on the distribution of aerial blight in
soybean fields that were in annual rotation with rice.
The inoculum for aerial blight fares well in the wet conditions of rice fields and
will persist and accumulate in the soil. “It’s a big tough disease. It just sort of
kicks the door in and does what it wants to do,” he said.
Spurlock said research shows a correlation between elevation and occurrence of the
disease, with higher levels of infection correlating with lower elevations in the
field and in bends in the levees.
“That inoculum is built up in the soil and it’s ready to go,” he said. “If we get
cool and we get wet, at canopy closure, we better be hunting aerial blight.”
Breeding salt-resistant soybeansBuildup of salts in the soil can be deadly to soybeans, said Grover Shannon, professor
of soybean genetics and breeding at the University of Missouri. Shannon said Arkansas
maybe the No. 1 state in the Delta where it comes to salt problems.
Managing salt in soil is virtually impossible, so soybean growers need to turn to
varieties that exclude salts from being drawn up the plant and into the leaves, he
Shannon said research shows there are three types of soybeans, Glycine tomentella,
G. argyea and G. soja, the wild soybean, that all show excellent resistance to salt.
“We want to move genes from these three into Glycine max” the crop soybeans, he said.
Shannon recommended that growers have their wells and soils checked for salts and
if a farm’s neighbors are seeing salt issues, growers may want to use a salt-resistant
variety, “just in case.”
Race for 100 winnersThe event also featured panel discussion moderated by “Mr. Soybean,” Lanny Ashlock
with the three Arkansas Race for 100 winners: Nelson Crow, Eddie Tackett and Matt
Miles. The trio shared their production practices for reaching the 100-bushel-per-acre
yield mark. Ashlock is a former U of Arkansas System Division of Agriculture extension
soybean specialist who works for the Arkansas Soybean Promotion Board.
“I want to thank the university and the soybean board,” Tackett said. “Without them,
we wouldn’t be here.”
Much of the research presented was funded by soybean checkoff dollars.
The annual Tri-State Soybean Forum is presented by the University of Arkansas System
Division of Agriculture, LSU AgCenter and Mississippi State University Extension Service.
For more information about the programs of the University of Arkansas Cooperative
Extension Service, contact your county extension office. or visit www.uaex.uada.edu.
The Cooperative Extension Service is part of the University of Arkansas System Division
of Agriculture and offers its programs to all eligible persons regardless of race,
color, national origin, religion, gender, age, disability, marital or veteran status,
or any other legally protected status, and is an Affirmative Action/Equal Opportunity
January 3, 2014
By Mary HightowerThe Cooperative Extension ServiceUofA System Division of Agriculture
Media Contact: Mary HightowerExtension Communications SpecialistU of A Division of AgricultureCooperative Extension Service(501) email@example.com