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ISSUE DATE: 01/21/2013

Herbicide rotation just as important as crop rotation for sunflowers

By Jennifer M. Latzke

Kansas has historically been known as the Sunflower State. But with the recent confirmation of populations of glyphosate-resistant Palmer amaranth in the state, the most recognizable state symbol could someday be a weed. That poses a problem for sunflower growers.

"One of the major needs expressed by growers over the last four or five years is the need for better broadleaf weed control in sunflowers," said Phil Stahlman. "Palmer amaranth is a growing concern in sunflowers and kochia as well." Stahlman is a weed scientist at the Kansas State University Agricultural Research Center in Hays, Kan.

In fact, he said, in addition to the widespread presence of glyphosate-resistant kochia throughout western Kansas, there are limited pockets of glyphosate-resistant Palmer amaranth in parts of central Kansas. And there are even some populations of Palmer amaranth that are resistant to the HPPD class of herbicides, such as Callisto, Impact or Armezon, and Laudis.

Typically, a sunflower grower would ensure that his field was clan before planting, using a glyphosate burndown, but with glyphosate resistance in weeds, he needs to have other options available. And that doesn't mean just a crop rotation, he added.


African women apply skills, knowledge gained through NMSU program
Convert consumption into labor when evaluating purchases
Educator joins Sublette County UW Extension office
Emergency farm loans available after USDA disaster designations
Extension offers action plan for healthy living
Farm loan application assistance available
Food safety starts when you leave the store
Forecaster says drought will get worse before it gets better
From the heart
FSA loan program transfers farmland to the next generation of farmers
NDA sponsors Agriculture Week poster contest
Now is a great time to work on convincing business plan
Public Lands Council offers student scholarships to legislative conference
Salazar to return home to Colorado
State to undertake major study on oil and gas emissions
USDA designates all 77 counties in state as primary natural disaster areas
USDA highlights 2012 investments to build stronger rural communities


Bacteria pitted against fungi to protect wheat and barley
Colorado Young Farmers to meet in February in Monte Vista
Combating USDA's top-ranked invasive insect
Computer modeling shows importance of early season weed control
Corn producers to hold aflatoxin research update
Cotton Genetics Research Award presented
Diversified Ag Conference to address spring seeding, hay feeding, cattle grading, insect control
Drainage ditches can help clean up field runoff
Farm Bureau elects leadership and adopts new policy positions
Farm Fresh Directory helps market local ag products
Farmers market grants available
Farmers, educators do more with cover crops and no-till
Field crop conditions vary widely
Food processing center plans extrusion workshop for food industry
Fremont County Farm and Ranch Days features educational programs
Garden City Farm Show will address ground water shortage, alternative crops
Governor's Ag Conference to feature former treasury secretary
Governor's Forum on Colorado Agriculture to focus on innovation for the future
Herbicide rotation just as important as crop rotation for sunflowers
Integrity of certified seed relies on clean machines
Kansas farmers support local schools through America's Farmers Grow Rural Education
K-State work indicates glyphosate-resistant Palmer amaranth weed present
Land Application Training days offered in February
Large cotton supplies, weather will weigh heavily in 2013
Lease resources available
Leopold Conservation Award applications available
McGrath named 2012 'Woman in Agriculture'
Mid-Tex Farm and Ranch Show scheduled
National Corn Growers award top entries in annual yield contest
NCC launches Emerging Leaders Program
Nebraska Soybean Board to meet Jan. 21 and 22
Organic farming conference provides wealth of information to producers
OSU center to host Export Basics training
Private and commercial applicator credits offered
Producers encouraged to submit acreage reports
Scientists develop test to determine viability of soybean rust spores
Shur-Co offers 4500 Series HD Electric Roll Tarp, Tarp Saver Tarp Cords
Sorghum schools planned in February
Soy checkoff examines maintenance options for aging U.S. locks and dams
Spectral analysis used to compare soybean genotypes
Spring conference on aging announced
Study: Missouri's corn and ethanol industries drive rural economy
Tom Osborne to give keynote at Ag Outlook conference
TRAC-7 Program will be on display at Kansas Workforce Summit
Triple C offers Hydra Bed
Wheat Technology Conference 2013: Sharpening Your Production Skills For Maximum Profit


AHC urges horse community to take part in USDA agricultural census
ASA announces internships
ASA reviews top sheep stories of 2012
Beef conference to focus on efficiency
Bison on menu at Presidential Inauguration
Bronco Betty and her camera make memories live forever
Cattlemen's Day focuses on producers' challenges
DCHA seeking leadership program applicants
Facility design the focus of MFA-sponsored low-stress livestock demonstrations
Feedlot, beef industry efficiency not the same
Governor appoints Perrier to Animal Health Board
Industry suggests phased-in approach to new trich regulation
Iowa Farm Animal Care Coalition launched
Missouri CattleWomen elect 2013 leadership
Monitor water quality
Montana Cowboy Hall of Fame to honor new inductees
Montana Stockgrowers, Extension announce Steer of Merit certifications
Nebraska Cattlemen members adopt policies
Silver Bullet reduces bacteria and biofilm in animal drinking water
Texas Tech ag economics team unveils new analysis tool for cattle producers
UAPB livestock specialist visits Kenya
UNL cattlemen's seminars scheduled


GMOs get a new unlikely ally
Reader says he understands why we say 'God bless America'
Scabs ripe for picking


Hopes and aspirations
Just a scoop full
New insecticide registered by EPA, effective in summer
Product makes nutrients more available to the rumen
Robots are taking our jobs
Rural by choice


Ada livestock auction report
Amarillo livestock auction summary
Colorado feeder cattle summary
Dalhart livestock auction report
Ericson livestock auction report
Ft. Smith livestock auction report
Georgia livestock auction summary
Grain market close
Hay trade slow
Joplin regional sales report
Lexington livestock market report
Most hay selling steady, some areas hay scarce
Newell sheep sales report
Pratt livestock auction report
Salina livestock auction report
Tulia livestock auction report
West Plains regional cattle sales report
Woodward livestock market report


Drought management topic of West Central Cattleman's Day


Blizzard's silver lining: Firewood and landscape renewal
Candlenut has well-planned arrangement
Christmas Bird Count results announced
Ellis County Extension to hold Predator Calling Seminar
Extension to host money management programs
Gunnison sage-grouse proposed for listing as endangered
Helpful household tips
Horticulture Workshop set for Feb. 23
Indulge your love for lattes
K-State to hold Tough Enough to Wear Pink rodeo event
Landscape needs moisture in the winter, too
More featured recipes from Journal cookbooks
Native orchid protection and conservation subject of new AgriLife Research study
Pine Bluff Home & Garden Seminar, Show set for Feb. 9
Prevent winter injury to plants
Visit the Heart of Oklahoma, home of racetrack champs

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