Moisture Puts Spotlight On Nitrogen

High corn prices, saturated soils brings up worries about nitrigen loss.

For the second year in a row, growers in many parts of the Midwest are facing moisture-saturated soils that could leave corn short on both nitrogen (N) and yield in 2008. That’s despite the fact that they applied, or are planning to apply, nitrogen at rates that typically are adequate to produce a bin-busting crop.

The possibility that soil moisture conditions could cause large nitrogen losses is especially daunting with corn futures prices above $5 per bushel and in-season nitrogen expected to cost 60 cents or more a pound, says Dr. Tracy Blackmer, research director for the Iowa Soybean Association (ISA) On-Farm Network.

“There is so much money being invested in the crop, and the crop is so valuable, that growers need to devise strategies to counteract what could be a challenging year for supplying adequate nitrogen to the crop,” he says. “I have been getting lots of calls from growers who are concerned. Many of them applied anhydrous ammonia in the fall because it was relatively cheap compared to other forms.”

His advice? Be prepared to make in-season sidedress nitrogen applications if it looks like the crop will come up short on nitrogen. Additional nitrogen applied at planting could be wasted if conditions are conducive to large N losses.

Based on ISA On-Farm Network research, he suggests sidedressing 50 pounds per acre of additional nitrogen if rainfall is more than 13 inches from March through May.

Another alternative to this sidedress-no sidedress approach is to use an optical sensor system to customize the rate, says Blackmer. Optical sensing technology, which is relatively new on the market, assesses actual crop needs and applies the appropriate additional fertilizer rate in a single field pass.

The On-Farm Network tested the GreenSeeker optical sensing and variable-rate application system in 2007, when many Iowa growers also faced saturated soil conditions that short-changed the crop on nitrogen. The six-sensor GreenSeeker RT200 unit, which is mounted on a sidedress nitrogen applicator, uses infrared and near-infrared light to assess plant biomass and health as the rig moves across the field. Fertilizer rates are adjusted on the go, depending on the sensors’ assessment of the crop’s yield potential.

“The research showed that GreenSeeker detected nitrogen stress and applied the amount of nitrogen needed to alleviate it,” he says. “It provided an economic yield response to the extra nitrogen. The sensors can detect early on which plants are stressed. Often, by the time you can visually see that additional nitrogen is needed, it’s too late.”

ISA On-Farm Network’s 2007 stalk testing program confirmed that above-average rainfall can reduce yield from nitrogen loss.

“More than 30% of the fields we tested were low on nitrogen,” he says. “Growers were horrified by what they saw from aerial imagery and the stalk tests. They lost money because they didn’t have enough N for the crop. That really hurts at $5 corn. Growers have to do what they can to protect this high-value yield.”

The ISA On-Farm Network plans to conduct additional research with GreenSeeker technology in 2008. The research is being conducted with support from GreenSeeker manufacturer NTech Industries, Inc., along with its distributor, Redball, LLC.

Visit www.isafarmnet.com for more information on the ISA On-Farm Network. Visit www.greenseeker.com for more information on GreenSeeker.
 

Leave a Reply

Fertilizer Stories

Potash Corp Agrium
Crop InputsAgrium, Potash Corp To Merge To Create $36 Billion Company
September 12, 2016
Canada’s Agrium Inc. and Potash Corp of Saskatchewan Inc. have agreed to combine in a deal that would create a Read More
FertilizerBRANDT Specialty Fertilizers Help Grower Set Soybean Yield Record
September 12, 2016
BRANDT, a leading agriculture retailer and manufacturer of specialty Ag products, has announced that its new proprietary nutrition products were Read More
Corn Field
FertilizerBridging Crop Nutrition Science And Technology
September 7, 2016
The future seemed to draw nearer for the 1,600-plus attendees of the co-located InfoAg and International Precision Agriculture conferences in St. Read More
Fertilizer Bin
FertilizerState Of The Fertilizer Industry Report Highlights Environmental, Social Contributions
September 6, 2016
As consumers, we live in a world with access to more data than we could ever hope to mine through. Read More
Trending Articles
Corn Field
Eric SfiligojFacing Ag Industry Challenges
September 26, 2016
At the 2016 annual Mid America CropLife Association (MACA) meeting in September, a pair of crop protection company representatives discussed Read More
Bayer Monsanto
Crop InputsBayer-Monsanto Mega-Merger: 6 Things You Need To Know
September 14, 2016
Mega mergers have become almost routine in the agricultural industry. Right on the heels of Monday’s news that fertilizer giants Potash Read More
Potash Corp Agrium
Crop InputsAgrium, Potash Corp To Merge To Create $36 Billion Company
September 12, 2016
Canada’s Agrium Inc. and Potash Corp of Saskatchewan Inc. have agreed to combine in a deal that would create a Read More
Osage Co-op Elevator Osage, IA Finished Building
OpinionAre We Crazy?
September 8, 2016
At some point in the first few months of my employment here at CropLife® magazine, I started getting curious about Read More
ManagementMAGIE 2016 Highlights and Deere Anti-Trust
September 1, 2016
CropLife Editor Eric Sfiligoj discusses the recent Midwest AG Industries Exposition and the Department of Justice’s objection to John Deere Read More
ASMARK 2016 Retailers Live! Tour - CPS
CropLife 100CPS Acquires Texas Retail Operation
August 23, 2016
Crop Production Services (CPS) has acquired the assets of Larry’s Chemical and Spray, Inc., for an undisclosed amount in an Read More
Latest News
Young Corn Field
StewardshipStudy: Ohio Farmers Doing ‘A Good Job Of Managing…
September 27, 2016
Leaders from Ohio’s largest grain farming organizations announced today that Ohio farmers are doing their part in effectively managing phosphorus Read More
Growmark FS Outlet
Industry NewsGROWMARK To Purchase Suncor’s Share Of UPI
September 26, 2016
GROWMARK and Suncor have reached an agreement in which GROWMARK will purchase Suncor’s 50% interest in UPI, Inc. in Ontario, Read More
Corn Field
Eric SfiligojFacing Ag Industry Challenges
September 26, 2016
At the 2016 annual Mid America CropLife Association (MACA) meeting in September, a pair of crop protection company representatives discussed Read More
Syngenta Seedcare Institute
Seed/BiotechSyngenta Opens New North America Seedcare Institute In …
September 23, 2016
Syngenta unveiled its new Seedcare Institute in Stanton, MN, during a recent grand opening celebration. More than 150 industry leaders, Read More
StewardshipMonsanto Invests $1.6 Million In System To Quantify Gre…
September 23, 2016
The USDA – Natural Resources Conservation Service (USDA-NRCS) recently awarded the National Corn Growers Association (NCGA) and its Soil Health Read More
Pipe rack
LegislationCourt Sides With Ag Retailers On PSM
September 23, 2016
The D.C. Court of Appeals has ruled the Occupational Safety and Health Administration violated the Occupational Safety and Health Act when Read More
ManagementPacific Coast Fertilizer Announces Interest In Longview…
September 22, 2016
Pacific Coast Fertilizer LP (PCF) announced at the Cowlitz Economic Development Council board of directors meeting its interest in developing Read More
Young corn plants in soil
UncategorizedCool Planet Raises Additional $9 Million To Commerciali…
September 22, 2016
Cool Planet has announced the first close of a new financing round to commercialize the company’s Cool Terra Engineered Biocarbon Read More
Crop InputsJim Loar Promoted To President And CEO Of Cool Planet
September 22, 2016
In a move that reflects and reinforces the company’s commitment to the agricultural market, the Cool Planet board of directors Read More
BlendersNorth Dakota Coop Debuts Dry Fertilizer Plant
September 22, 2016
North Central Grain Cooperative has begun operations at a new dry fertilizer plant at its Rolla, ND, site. It is Read More
Crop InputsMonsanto, Bayer Officials Defend Proposed $66 Billion M…
September 21, 2016
Top officials for Monsanto and Bayer defended their proposed $66 billion merger before skeptical senators on Tuesday, insisting that the Read More
ManagementUpcoming Shows & Recent Events
September 19, 2016
Editors Paul Schrimpf and Eric Sfiligoj talk about upcoming trade shows and events and review the Mid America CropLife Association Read More
Industry NewsVerdesian Life Sciences Appoints New CEO
September 19, 2016
Verdesian Life Sciences, a plant health and nutrition company, today announced that its board of directors has named Kenneth M. Avery Read More
Corn
Crop InputsEPA Settles With Syngenta For Alleged Multi-Regional Pe…
September 19, 2016
The U.S. EPA has announced a multi-region settlement with Syngenta Crop Protection, LLC (Syngenta) in Greensboro, NC, for alleged violations of Read More
ManagementMerger Mania
September 16, 2016
Editors Paul Schrimpf and Eric Sfiligoj discuss this week’s mega-ag mergers of Bayer and Monsanto and Potash and Agrium. Read More
Monsanto sign
Crop InputsMonsanto Ends Up Being A Bargain For Bayer
September 16, 2016
History will say Bayer got a bargain in its $66 billion purchase of Monsanto, writes David Nicklaus, St. Louis Post-Dispatch. The Read More
Greg Musson, Gar Tootelian
CropLife 100California Ag Retailer Steps Up To Feed Families Affect…
September 16, 2016
GAR Tootelian, Inc. (GAR) in Reedley, CA, is challenging the Central Valley to help raise enough money and provide 525,000 meals Read More
Crop InputsBayer, Monsanto CEOs Discuss Merger
September 15, 2016
Werner Baumann, Bayer CEO, and Hugh Grant, Monsanto CEO, discuss why they decided to merge their companies. Read More