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Precision Fertilizer Recommendations From Nebraska

Fertilizer production costs will be substantially higher in 2011 than they’ve been for the past couple of years. When you look at the numbers, remember that commodity prices also have increased significantly.

If you are a shrewd marketer, you have taken advantage of crop pricing opportunities that will help offset the higher production costs. You may still be able to find a few holiday bargains for pre-paid fertilizer, however, most of the good deals ended in November. Following these tips can help you achieve a profitable fertilizer program for 2011

10 Tips for Getting the Most from Your Fertilizer Investment

  • Follow a good soil testing program to know macro and micronutrient levels.
  • Use the most efficient methods to apply phosphorus (starter or strip-till application) and timing options/methods/sources for nitrogen.
  • Take deep soil samples for residual nitrate to fine-tune N rates.
  • Set realistic yield goals. Expected yield is the major factor in determining the nitrogen rate for corn. Use a proven five-year average corn yield plus 5% (to account for hybrid and management improvements).
  • Credit N from previous crop residue or legume crops. Soil tests will not show legume or crop residue credits as the residue or nodules must break down during the growing season. Credit N for corn after soybean, sugar beet, alfalfa, and dry beans.
  • Value and use manure sources properly. Manure is an excellent nutrient source for nitrogen, phosphorus, and micronutrients.
  • Not all fertilizer recommendations are the same. UNL fertilizer recommendations may seem conservative compared to some commercial labs. UNL suggestions are based on research and on-farm verification. They are generally the most economical rates, even for high yield situations.
  • Consider replicated strip trials to determine the effect of lower or higher rates on yield. Fine-tuning fertilizer use needs to be an on-going process.
  • Comparison shop. Look at different products and do your “fertilizer arithmetic” to compare the actual cost per pound of nutrients.
  • Work with a reputable dealer who can provide quality product, price assurances, timely delivery, and well-maintained equipment. Remember, service after the sale is also important.

Gary Hergert, Extension Soils Specialist
Panhandle REC, Scottsbluff

See more recommendations for surviving high input costs.


Must Read: New Precision Balanced Crop Nutrition Guide

I’d highly recommend every farmer spend some serious time this winter with this new guide. It is excellent.

Sent to over 400,000 growers as a supplement to the November issue of Successful Farming magazine, the 28-page guide is a valuable resource for growers striving for next-generation yields, as well as a great sales tool for Mosaic’s retail customers.

The guide features new thinking on building a well-balanced fertility program and highlights the latest research on topics like uncovering the nutrient requirements of today’s new hybrids, real experiences of producers implementing innovative best management practices and facts on the latest advancements in fertilizer.

“It’s with a pioneering spirit and quest for better information that The Mosaic Company brings you the Balanced Crop Nutrition supplement to Successful Farming,” said Rick McLellan, Mosaic’s senior vice president of Commercial Operations. “Technology continues to evolve and promises higher levels of crop performance, but to maximize this potential, fertility strategies also must move forward. Fertilizer is the foundation on which all high-yield crop systems must be based.”

To view the guide and order additional copies visit: www.back-to-basics.net.

Top 10 Ag Technologies from 2010 by Farm Progress

Take a look at a story in Indiana Prairie Farmer that selected ten different agricultural technologies of interest this year.

They listed:
- Raven Sling Shot system
- Connected Farm concept
- GSI Binspector
- Grain entrapment rescue tubes
- Votivo nematicide seed treatment
- SmartStax corn
- Agrisure Viptera trait
- Surveillance sunglasses
- Vertical till revolution
- Kixor herbicide technology

Read on to learn why.

Don’t Apply Nitrogen Yet

IF YOU ARE APPLYING FALL NITROGEN TOO EARLY, STOP! MISUSE MAY ELIMINATE FALL APPLICATION FOR EVERYONE

We’ve shared with you in this forum on many occasions that increased regulations and legislation are headed your way. And in this case, some farmers and applicators might be asking for it. It is too early to be fall applying nitrogen. Environmental extremists are documenting, right now, everywhere they can find, individual cases of N being applied at inappropriate times. Is the rush to get field work done worth costing everybody in the industry fall applied nitrogen? That’s not an exaggeration and the outcome is nearer than you might choose to believe.

We’ve all been victims of “one bad apple spoiling the whole basket.” Years of responsible fertilizer application and nutrient management plans by thousands of farmers in Illinois will be undone if irresponsible behavior is undertaken and we turn a blind eye.

Take a lesson from what happened in the state of Florida. Legislation via litigation ended up costing farmers in that state after extreme environmental groups pushed their agendas through the courts. Illinois is next on their hit list. This means you. The loss of fall applied nitrogen will cost Illinois agriculture billions of dollars.

You may not be fully aware of how imminent this situation is. But take this as your notice. You will lose the opportunity to include fall applied N as a management tool in your nutrient plan if as a whole, we don’t do what’s right. We’ve talked the talk. Now it’s time to walk the walk.

Illinois farm organizations and the Illinois EPA have been in your corner, supporting your access to fall N. Not following best management practices for nitrogen undermines everyone’s credibility and will soon cost you this option.

The future of fall applied N in the state of Illinois depends on YOU. Do what’s right.

  • The IL Fertilizer and Chemical Association recommends using nitrogen stabilizers for ALL fall applied N.
  • Wait until after October 15th before even considering N application.
  • Only apply N when the soil temps are in the low 50’s and the longterm forecast is for sustained cool weather.
  • If you choose NOT to use an N stabilizer, only apply N when soil temps are below 50 degrees and will stay that way.

USDA Studies Show Value of Agrotain Plus & SuperU

Nitrogen is a very important element in corn development and this year it seemed to be in short supply in many wet areas of the Midwest. When growers have to apply nitrogen, once such product they use is Agrotain Plus, a nitrogen stabilizer which controls nitrogen loss by blocking the enzyme urease. Agrotain Plus can be added in liquid nitrogen (UAN) or it can be used in manure and stops leeching, denitrification, and volatility of UAN.

SuperU is a finished grade urea and when Agrotain makes the SuperU, they add the nitrogen stabilizer to chemically stabilize urea for its use in the field.

To learn more about Agrotain Plus and SuperU, I spoke with Martin Case. He told me, “We’ve seen a lot of nitrogen deficiency in the crops this year where we’ve run the nitrogen out early down low and the corn turned yellow early down low. Then we had a lot of excess water that drove the nitrogen out of the root zones, so the corn has suffered and died early.”

Case recommended that grower start thinking about their programs for next year and anticipate any problems that were seen this year and what they may expect next year for weather. Then, he said, apply either Agrotain Plus to your UAN or buy SuperU and apply it based on your agronomist’s recommendation on the best way to get the most return.

Case said the products work and he mentioned that they have been studied independently by the USDA (studies are now in their third year) and USDA is seeing a dramatic economic value, meaning more corn yield which equates to more profit for the farmers. In addition, they are seeing a reduction in the loss of nitrous oxide to the atmosphere.

You can learn more about Agrotain and SuperU, by listening to my interview with Martin Case here. USDA Confirms Agrotain and SuperU's Value

Farm Progress Photo Album

Precision Planting Pays

Precision Planting’s business is trying to make sure seeds get into the right space at the right distance and seeds only land where they need to land,” Precision Planting’s Jason Larkin explained to me during the Farm Progress Show. We use precision technology to know where the tractor is at and where the plant is at to control population, so we can increase or decrease populations based on soil types, continued Larkin.

In addition, they use swath control, or the ability to turn individual rows on and off using GPS so that a farmer who is planting corn doesn’t overlap. This helps to eliminate yield loss that comes from over planting as well as saves farmers on their seed costs.

In a corn husk, pardon my pun, Precision Planting uses variable rate technology to help farmers understand how to pick the right population for the area they’re in. And this is important. “For every percentage improvement we can give someone for accuracy, from 95 percent of the seeds placed correctly to 97 percent of the seeds placed correctly, that equals a $10 per bushel yield advantage.”

You can listen to my interview with John Larkin here. John Larking Talks Precision Planting

Farm Progress Photo Album

Ag Industry Integral to America’s Future

During a press conference hosted by Growth Energy, Iowa Ag Secretary Bill Northey stressed the importance of the ethanol industry to agriculture. Northey told the tale of how corn farmers were looking for a way to sell their excess corn back in the 80s and so they created the ethanol industry. And it worked. Last year, ethanol used 4 billion bushels of corn out of a total of 13 billion total bushels and many new companies and technologies have sprung up to support the industry’s growth, such as those companies offering corn farmers precision ag technologies.

But to keep the ag industry strong, the country must pass long-term energy policy that will support increased market access for ethanol. “It is vital that Congress and the EPA move forward and approve these needed long-term policy proposals,” Northey said. “It is important that we send a signal to the industry and investors that support structures that will remain in place and allow the industry to continue to advance and adopt new technologies including eventually cellulosic ethanol.”

The Green Jobs Waiver, or E15 waiver would do just this. It would help to open up the markets for more ethanol. But any decision on this front is still a ways a way. According to Tom Buis, the CEO of Growth Energy, the EPA and DOE will finish testing on 2007 and newer cars this month and 2004 and newer cars by the end of November. No one knows for sure how the EPA will rule, but there is widespread confidence that E15 will be approved.

Approving the extension of the ethanol tax credit is also important in sending the message to investors that this industry is here to stay.

Northey also stressed that success of the ethanol industry has allowed the success of other companies as well, many who are participating at this year’s Farm Progress Show. Therefore, Northey concluded, it is not only important for many states’ economies and the agricultural industry for ethanol to succeed, but it is ultimately important for all forms of alternative fuels.

You can listen to the Growth Energy press conference here. Growth Energy Press Conference During Farm Progress Show

Farm Progress Photo Album

Precision Pays coverage of the Farm Progress Show is sponsored by: Ag Leader Technology.

OptRx Improves Nitrogen Efficiency

I’m here in Iowa at the Farm Progress Show. Although there are farmers from all over the world in attendance, farmers in Central Iowa have been struggling with excessive amounts of rain. This causes crops, such as corn, to lose nitrogen, which negatively impacts crop yield.

Nitrogen has also become more expensive over the past couple of years so more effective nitrogen programs are of great value to them. Enter the OptRx Crop Sensor by Ag Leader. This is variable rate technology that not only applies nitrogen, but adjusts the rate of application on the go. The sensor is able to determine if the soil needs more or less nitrogen and on the fly, makes appropriate adjustments.

Jessica Reis, with Ag Leader, explained that being able to adjust nitrogen offers a multitude of benefits but one of the most important of them is the ability to use appropriate amounts of nitrogen on each area of the field will improve yield and that means improved profit.

Check out our Farm Progress Photo AlbumFarm Progress Photo Album.

Precision Pays coverage of the Farm Progress Show is sponsored by: Ag Leader Technology.

Farm Journal Corn College Talks Technology and More

Insights WeeklyDespite the heavy rains at times followed by high heat and humidity, around 800 growers, retailers and crop consultants came to Farm Journal test plots near Bloomington, Ill., to gain in-depth knowledge from experts at the recent Farm Journal Corn College.

During this week-long classroom and in-field event, hosted by Farm Journal field agronomists Ken Ferrie and Missy Bauer, participants gained hands-on information about such topics as planter impact on root growth and development, variable-rate population and nitrogen, the significance of water pH on herbicides, lime quality and application methods, and much more.

Ag Leader Technology was one of the sponsors of the event, and the company hosted a luncheon ‘Learning Session.’ “We talked about crop sensor technology from A to Z—from helping growers understand how the technology works to what farmers need to consider when adding the technology to their operation,” says Jessica Reis, Marketing Communications Specialist for Ag Leader.

“It was an excellent dialogue with growers, who helped remind us how cutting-edge this nitrogen sensor technology is from their perspective, which is different from those of us who deal with it daily,” Reis says. “We talked a lot about how growers can add sensors to gauge crop health during a postemergent herbicide application, as well as how the sensors, such as our OptRx Crop Sensor, can be incorporated into a nitrogen application program. It was a great learning session for us as well as the growers.”

Sponsors of the event also participated in a trade show area to answer any and all questions. “We had a lot of questions about planter section control, such as our SureStop Clutch and SureVac Shutoff, to help grower save seed costs,” Reis says. “Data questions, such as how to analyze years of collected data for improved management decisions, were very popular. We helped growers understand the benefits of our SMS Basic and Advanced software, and how it can work with data from many types and colors of equipment.”

For more information from this third annual event, visit www.farmjournalcorncollege.com. And check out RFD-TV on September 1 as Corn College TV will air 30-minute educational programs weekly.
Visit these links for more information.

Farm Journal Corn College http://www.agweb.com/farmjournal/farm_journal_corn_college/

OptRx Crop Sensor http://www.agleader.com/products/directcommand/optrx/

SMS Basic Software http://www.agleader.com/products/sms-basic/

How Software Helps In-Season Scouting and Management Zones

Insights WeeklyWhen discussion centers around all the data that fields can generate these days, crop consultants and savvy growers truly love powerful software programs. Especially when data can transfer easily between desktop and a mobile device to take to the field.

I spoke with Greg Kneubuhler the other day, who is a certified crop consultant, agronomist and owner of G&K Concepts in Harlan, Ind. Greg has been a true pioneering consultant in the NE Indiana/NW Ohio area—starting growers down the precision farming/yield gathering path back in the late 1990s. Today, his clients’ business has evolved into intensive precision management that includes precise zone management and applying the right variable-rates—all driven by on-farm research on every farm. To help accomplish such research, Greg works on numerous projects in cooperation with Joe Nester of Nester Ag, Bryan, Ohio.

“We’ve always used a zone management philosophy in fields—which started with soil types. Then we added yield and soil test data layers to begin developing variable-rate applications of nitrogen, lime, and even seed by management zones. But an accurate yield map is critical,” he says.

Kneubuhler, who has used various software over the years, now relies on SMS Advanced software from Ag Leader. Its data layering and management zone capabilities, along with its smooth data transfer between the SMS Mobile software on a handheld computer.

“I’m a daily SMS Advanced user, and I have yet to find a software that is better. If there was one, I’d be using it. I can manage all clients zones, all research trials, and easily sync data to SMS Mobile so I can use it to walk corn fields to exact locations for stalk nitrate tests or to check on potential issues that show up on aerial imagery,” he says.

These valuable information tools help Kneubuhler take all the geo-referenced data his clients collect, which he layers into his ‘sandwich.’ “As an agronomist, we use this tool to build a sandwich of every type of information we can gather—and that really helps us make very good management decisions today, and down the road.”

For more information, visit

SMS Advanced Software http://www.agleader.com/products/sms-advanced/

SMS Mobile http://www.agleader.com/products/sms-mobile/

Ag Leader Precision Point blog – “Scouting the Crop” http://www.agleader.com/2010/05/25/scouting-the-crop/

G&K Concepts http://gkconcepts.com/Contact-Us.html

Nester Ag http://www.nesterag.com/

Certified Crop Advisors https://www.certifiedcropadviser.org/

Consider Sidedress N Applications Or Mapping with OptRx Sensors

Insights WeeklyAs corn continues to grow across the Midwest, areas of heavy rain in portions of states may cause more problems than just pond replanting. Loss of applied Nitrogen can cause valuable yield loss.

I spoke with Cory De Jong, Certified Crop Advisor and GIS/Agronomy Sales at Sully Cooperative Exchange in Sully, Ia. today. They tested the Ag Leader OptRx crop sensor system last year during all the heavy rains. “We strictly used the sensors on a sprayer for mapping purposes, as we weren’t set up yet to apply nitrogen. And we saw a lot of (plant health) variability in fields, covering several thousand acres that we mapped,” he says.

“Last year, sidedressing N definitely paid due to all the spring rain we had here in central Iowa. On average, growers gained at least 15 bushels an acre by sidedressing. And if they applied variable-rate, they could have gained 30 bushels,” De Jong says. “We saw 50 bushel per acre differences within fields with the OptRx. So this year we’ve got a bar ready to custom apply with OptRx to apply sidedress N. And we have a bar with OptRx that customers can rent, too.”

De Jong says there is a lot of hog and chicken manure used by customers in his territory, and they are interested in this sensor technology. “For example, one grower who has a lot of hog buildings wanted to know how much N he was getting from his manure. We used the sensors to shoot the plant leaves and saved him input dollars. And in some areas the N gets reallocated to areas of the field where N is needed most,” he adds.

He feels this sensor technology will gain more and more users, once growers see the benefits of variable-rate application. “As interest picks up, we’ll add sensors to a sprayer that will just be dedicated to sidedressing. We may be losing some N business due to manure, but we’re gaining business by helping customers apply N only where the sensors detect it is needed—as well as how much the plants need.”

For more information, visit

OptRx Crop Sensor http://www.agleader.com/products/directcommand/optrx/

Ag Leader Products http://www.agleader.com/products/

Sully Cooperative Exchange – Agronomy Dept. http://www.scecoop.com/index.cfm?show=10&mid=7

Certified Crop Advisors https://www.certifiedcropadviser.org/

Precision Soil Sampling Saves Money

Precision farming techniques are driving growth in soil sampling say Midwest soil labs, according to a report in Midwest Producer.

“At the peak of the season we’ll test 20,000 samples each day,” says Kennard Pohlman of Omaha’s Midwest Labs. “We always test the organic matter in the sample and the pH. You want to verify the nitrogen carryover and the level of phosphorus, potassium, sulfur and zinc. I can almost tell you, by looking at the soil sample results, what the farmer has been doing in the past and how good the farm is. That’s how much information is available in a soil sample.”

Grid sampling is Oldham’s specialty and he said a growing number of producers, especially those growing corn, are realizing the benefit of managing input costs and improving yields by testing their soil quality in single or multiple-acre grids.

“Sometimes producers believe the cost of sampling is greater than the cost savings or increased yield they see,” Oldham said. “Actually, the investment in the sampling analysis generally isn’t even recognizable in contrast to the combination of savings on inputs and the increased yield. If you’re analyzing just a few samples from your field, you obtain information about the averages in soil quality for that field. Getting samples from every 2.5 acres or less really allows you to combine that information with a variable rate prescription that allows for the best management of inputs and maximizes yield.”

For more details, read the story.

Test Your Corn Planting Populations

If you’re looking to experiment with corn planting populations yet this spring, check out a very good paper on plant population compiled by South Dakota State University researchers Gregg Carlson, Paul Gaspar and David Clay.

Many agronomists and producers conduct experiments that test the impact of rates of fertilizer, population, or pesticide on yield. To analyze this data we need to conduct a yield response analysis. Agronomists and or producers that understand yield response and how to use yield response to determine the point of optimum economic return will be able to make better management decisions. The point of optimum economic return is determined by:
1. Conducting a yield response experiment
2. Converting the yield response data to a functional relationship,
outputcorn yield = f(input the plant population)
3. Using calculus to determine where the change in the value of the input equals the change in the value of the output.
In site-specific farming, scientists have found that yield response relationships may change spatially and temporally.

To learn more, read the paper “Using Yield Response Analysis to Calculate an Optimum Plant Population“.

Precision Farming By The Zone

The Furrow magazine, produced by John Deere, profiled several growers on their use of precision farming management zones in a story called “Farming In The Zone” in their March 2010 issue.

Broadwater, Neb., grower Frank Lussetto says zone management helped him accomplish three broad goals of being agronomically sound, economically smart and environmentally safe. He uses zone maps for phosphorous, nitrogen and seeding rates, grouping six to eight soil types in a field into three to five zones. And he used elevation and electrical conductivity as the primary drivers in zone development.

The story also featured Enterprise, Kan., farmer Larry Hottman and his use of zones, derived more prominently from yield maps collected since 1998. He too used electrical conductivity readings to map soil properties along with grid soil sampling.

University of Nebraska agronomist Richard Ferguson says they are seeing a $26 per acre benefit using site-specific nitrogen application and zone management.

For more details, read the story.

Calibrate For Variable-Rate Precision Farming Success

Insights WeeklyWhile every farmer knows the value of preparing and calibrating the planter and sprayer, the same holds true when calibrating the electronics and software that control these implements—especially if you vary rates across the field on the go.

Hopefully you pulled out that owner’s manual, or enlisted your local dealer’s help, several weeks ahead of pulling into the first field with a planter full of seed. “The equipment only works as well as the set-up, so running the calibration software on your monitors should be an annual event,” says Nick Ohrtman, Technical Support Supervisor for Ag Leader Technology.

Since there’s no real standard procedure when calibrating for variable-rate technology, it is critical that you follow the guidelines in the owner’s manual of both the piece of equipment and the monitor that is driving it. “Our display monitors, like the Insight or INTEGRA, have a calibration wizard that walks you through seed meter calibration, allowing you to count the actual seed that drops per revolution, which is critical for variable-rate seeding” he says.

“If your variable-rate monitor is set to plant 34,000 seeds and the population monitor says you’re only seeding 30,000, then that’s a sign that the calibration was done inaccurately. If this happens with our system, when both monitors are running through our display, an alarm sounds when the populations don’t match up,” Ohrtman adds.

Granted, most calibration settings made are saved by crop, but it is still wise to recalibrate every year for each crop. “Once you’ve calibrated for corn and soybeans, then every field will use the same calibration. And the calibration doesn’t change when you’re switching plant populations,” he adds.

For growers using planter section or row shut-off technology, it’s advised to make sure your settings are correct each year. “With our AutoSwath system, there are three different settings available, so it’s wise to check the owner’s manual every year, as well as do a dig check in the soil on the first round to make sure the row shut-offs are working correctly.” Nick talks about tips for using AutoSwath in his blog post here.
For more information:
Calibrating Equipment for Variable-Rate Application

Variable Rate Equipment – Technology for Weed Control

Gear Up For VRT (Farm Journal, March 2009)