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ISSUE DATE: 01/28/2013

Soil sampling gets on-the-go

By Larry Dreiling

In the last 20 years, as precision farming techniques have moved from gee-whiz stuff to everyday use, many different concepts for creating variable-rate prescriptions for crop inputs like seed and fertilizer have been developed.

Originally, the use of yield monitors coupled to Global Positioning System satellites was the big thing in creating yield maps for proper subsequent management decisions.

It led to higher use of soil sampling, and farmers and crop consultants patrolled fields in four-wheelers tied to GPS units to capture samples at just the right spot to determine everything from soil pH to nitrogen uptake. Since then, satellite-based auto-guidance and steering systems have been introduced.

Studies have shown that use of yield map and soil survey information has its limitations, since yield data are not always readily available to growers and soil properties are often not well defined near survey boundaries.

That's why scientists and equipment manufacturers are trying to modify existing laboratory methods or develop indirect measurement techniques that could allow on-the-go soil mapping. To date, only a few types of sensors have been investigated, including those using electromagnetic, optical, mechanical, electrochemical, airflow and acoustic.


Always be prepared for winter weather
Ellis County Extension to host 'Couples and Money' program
EPA rules on high ozone readings related to burning
Farm Bureau announces national priority issues
Farm Service Agency announces important program updates
Follow 10 keys for financial success
Follow chain saw safety tips
FSA loan program transfers farmland to the next generation of farmers
Get rid of negative attitudes and behaviors about money
Grandparent caregivers not aware of recent safety recommendations
Heart of Ag takes center stage at Health & Safety Roundup
House Aggies make short work of organizing
Learning Games Lab offers free apps
NMSU's Tucumcari science center finds new ways to use recycled, treated municipal wastewater
Now is a good time to start budgeting for holidays
Oklahoma Cooperative Extension Service's presents top field staff award
Transmission line could help export Kansas wind energy out of state
USDA reports provide some price direction
Vilsack: Census information a vital tool for evaluating USDA programs, services
Woodlands-related funding still available through EQIP


2013 3i Show set for July 11 to 13
Advanced Nutrient Management Course set for Feb. 5 to 6
Ag conference to focus on success in changing world
Ag Scholarship winners announced
Annie's Project course for farm women Starts Feb. 12
Arkansas Soybean Association announces seminar
Canola College set for March 28
Cropping system strategies to mitigate drought
CSU Extension to hold Drought Summits
Don't guess--soil test
Drainage workshop offers field-tested approach to improve water management
Extension to hold Risk Assessed Workshops in Hays
Extension: Atrazine has a huge effect on Missouri economy
Junior Grange names new development director
New drone technology unveiled at Precision Ag Conference
New Mexico Ag Expo set for Feb. 19-20
NMSU celebrates $2.4M pecan grant
Proper combine settings reduce grain loss, improve grain quality
RFD TV 'Live' to cover fertilizer decisions
Soil sampling gets on-the-go
Sorghum U back by popular demand in Nebraska
Stream system restoration funds available
Tribine can revolutionize the grain harvesting industry
Vilsack to address National Biodiesel Conference & Expo
Wichita Falls Ranch & Farm Expo planned


AgriLife Extension offers veterinary medicine program to Panhandle area youth
Anti-meat campaigns mislead consumers
Bull power investment pays
Dairy profitability will increase on higher prices and lower feed costs
Drought increases importance of selection decisions
Feeder calf prices can be good, but feed costs depend on rain
Goats provide healthy, economical weed control
Grandin: Livestock industry has improved handling, needs to tell its story better
ICA announces program to strengthen Iowa's beef business
ICA Board of Directors selects new leadership at annual meeting
Judd Ranch bulls dominate Denver Pen Show
Kansas Beef Day is Jan. 30
MCA recognizes 4 county cattlemen's organizations
Missouri Cattlemen announce 2013 priority issues
Missouri Cattlemen's Association announces 2013 leadership
Missouri cattlewoman testifies before state Senate Ag Committee
National Gelbvieh and Balancer sale averages $7,720
NCBA releases smartphone app for 2013 Cattle Industry Convention
New or expanding livestock operations need to assess water needs
Online evaluation helps producers recognize Salmonella risks
Orange peels clean cows from the inside out!
Reno showcases Hereford champions
Reward offered for information about shooting of Lyon County cow
Steers in ICA Carcass Challenge making steady progress


Attention Secretary of Agriculture Tom Vilsack: Listen to those you represent
Checkoff helps assure link to grassroots
Politics as usual


Change is constant; Uncertainty is certain
Irrigation software upgrade includes new options
Just a scoop full
Rain sensor automates window, vent closing
Software collects harvest data
Stockmanship for 'two-leggeds'
Will states continue push for more renewable energy?


Aberdeen livestock auction report
Aberdeen livestock auction report
Ada livestock auction report
Apache livestock auction report
Arkansas livestock auction summary
Clovis livestock auction summary
Colorado feeder cattle summary
Dalhart livestock auction report
Denison feeder cattle auction report
Dodge City livestock auction report
Dunlap feeder cattle auction report
Georgia cattle auction summary
Grain market close
Hay trade slow to steady
Hay trading slow
High Plains slaughter news report
Lexington livestock auction report
McAlester livestock market report
Ogallala livestock auction report
OKC West livestock market report
Pratt 3 p.m. cattle sales report
Pratt livestock auction report
Salina livestock auction report
San Angelo livestock auction report
South Central direct sheep sales report
Soybeans have a strong rally
Springfield dairy heifer sales report
Springfield livestock auction report
Superior video auction report
Texas Direct feeder cattle summary
Tulia livestock auction report
Tulsa livestock auction report
Woodward livestock auction report


Alfalfa Expo to help producers best manage crop during drought


4-Her makes 'peaceful pillowcases' for cancer patients
Caring for damaged trees
Dessert, appetizer winners featured
Farmland conservation crucial to success in hunting seasons
Great game day eats
Kansas Pheasants Forever to hold state habitat meeting
Poplar has significant curb appeal
Propagating houseplants
UNL's Master Gardener program available in Trenton
Using old garden seed

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