Reap more of what you sow.

August 21, 2014

The Top 5 Reasons to Apply Potassium this Fall

There may not be a big agronomic difference between applying potassium in the fall or the spring, but from an economic standpoint, fall application could yield the best results in more ways than one. In this video, University of Minnesota’s Dr. Fabian Fernandez joins Dr. Robert Mullen in detailing the top five reasons why fall-applied potassium may make the most logistical, practical and financial sense for your operation.

1) Logistically more manageable, 2) Less soil compaction, 3) Ideal for deep tillage, 4) Less runoff, 5) Product availability

August 18, 2014

4 Tips for Applying Potassium this Fall

Whether this is your first year applying potassium in the fall or your 50th, these four tips will ensure you get the best economic return from your fertilizer investment.

1. Apply before tillage, 2. Avoid applying on frozen ground, 3. Use Nutrient Removal Calculator, 4. Use soil tests to guide fertilization

August 15, 2014

Are You Among the Many Who Need More K than Current Benchmarks Indicate?

University-established critical levels have been instrumental in guiding fertilizer decisions to maximize yields. However, many of those critical levels were determined 10 to 20 years ago and, therefore, don’t take into consideration the potassium demand rates of today’s new hybrids, varieties and production practices. It’s important to assess your operation, what you grow and what your potassium needs are to ensure you apply the K needed this fall to maximize yields next fall.

if you’re using new hybrids, varieties or practices, you may need a lot more k than you might think.

More K Needed Over Life Cycle

Download Research Materials

June 19, 2014

Fertilization: Comparing The Maintenance Approach vs.The Sufficiency Approach.

Virtually everyone in the industry agrees that fertilization is required when soils fall below the critical level for P and K. But that’s where the consensus ends. The real debate begins when determining a course of action for fields right at that critical level. Fertilize? Or not to fertilize? In this video, Dr. Robert Mullen explains the difference between the Maintenance and Sufficiency Approaches to fertilization and offers his opinion on what method he recommends to ensure farmers get the most out of their fields.

When fields reach critical levels for P and/or K, farmers are faced with two choices:

The Maintenance Approach

Action: Fertilization is required.

Result: Nutrient application ensures the entire field is above the critical levels for P and K, thereby maximizing yields.

The Maintenance Approach

The Sufficiency Approach

Action: No fertilization required.

Result: Although the field has an average at or above the critical level, some areas of the field may still fall below the critical level. Therefore, the farmer risks yield loss in order to save on nutrient costs.

The Sufficiency Approach

Download research materials

April 25, 2014

Starter Fertilizers:
A Minnesota Researcher’s Perspective

Interview with Fabian Fernandez, Assistant Professor, Dept. of Soil, Water and Climate, University of Minnesota

Listen to Dr. Fernandez talk nutrient application timing and starter placement methods, including their effects on yield.

April 18, 2014

Starter Fertilizers:
An Iowa Researcher’s Perspective

Interview with Antonio Mallarino, Professor of Agronomy, Iowa State University

Dr. Mallarino, who specializes in nutrient management, talks about the conditions that make the most sense for applying starter in Iowa and the North Central region.

April 16, 2014

Starter Fertilizers:
An Ag Retailer’s Perspective

Interview with Doug Winter, Pioneer Sales Rep, Mill Shoals, IL

Hear from a seed sales rep on how using starters can limit your weather and soil condition variables, and why he recommends talking to your local input suppliers.

April 7, 2014

Starter Fertilizers:
A Southern Illinois Farmer’s Perspective

Interview with John Scates, Shawneetown Farmer and CCA

Learn why this fifth generation family farmer uses starters, including the benefits to his racehorse corn hybrids and how they’ve helped him increase his yields.

April 1, 2014

How to Recognize Nutrient Deficiencies Just by Looking.

Assessing a soil for nutrient status in a laboratory can be a good way to determine whether it has the fertility needed to support optimum growth, but visual assessment of the crop can also tell you a lot about your soil. Being aware of what to look for can help you catch a problem before it impacts your yield and your bottom line. In this video, Dr. Robert Mullen reveals some of the most identifiable visual cues of nutrient deficiencies in both grasses and broadleaves.


For more information and pictures, visit http://www.ipni.net/article/IPNI-3231

Think your crop might be deficient in P or K? Here’s what to look for.

P or K deficiencies

Download research materials

March 23, 2014

Testing for Potassium: Comparing the Dry Soil Test to the Moist Soil Test.

For decades, the common method for testing soil for potassium has been to dry samples prior to analysis. However, research conducted by Iowa State’s Dr. Antonio Mallarino reveals testing moist soils may be more accurate when estimating the availability of potassium for crops and the need for fertilization. This eye-opening research may change how soil tests are conducted in the future, and may ultimately help farmers make better business decisions.

Dry Vs. Moist Soil Test

Research indicates the Moist Soil Test may show better relationships between soil test results and yield response. Translation? the Moist Soil Test may be more accurate in determining how much potassium is in the soil.

Dry Vs. Moist Soil Test

Download research materials

March 1, 2014

Using K to Suppress Pests and Pathogens

Robert Mullen, Director, Agronomy, PotashCorp

We all know how valuable K is in maintaining crop nutrition, but it may also help crops build up tolerance against pests and pathogens. Studies show that K for plants works much like vitamins for humans in improving overall health - meaning K may not prevent plants from getting sick or infested, but it can drastically improve their resistance to fungi, insects, pathogens and nematodes. Robert Mullen explains how this boost in tolerance can help boost yields, and ultimately your bottom line.

Aphids Per Plant

Aphids Per Plant

Download research materials

September 10, 2013

Fall Tips: 4 Steps to Achieving the Ideal Soil Sample

Soil sampling isn’t exactly everyone’s idea of a good time, but it is the single most important guide to the profitability of your fertilizer investment and crop production. However, soil analysis is only as good as the samples that are collected, so it’s imperative that proper techniques be used to collect them. This video outlines the four most important tips to consider when soil sampling this fall.

Step 1: Use clean sampling tools. Step 2: Sample at consistent depths. Step 3: Collect enough cores. Step 4: Thoroughly mix cores.

September 6, 2013

Fall Tips: Using the Nutrient Removal Calculator with Special “Economic” Feature

Think of the new eKonomics Nutrient Removal Calculator as the upgraded version of similar tools you may have used in the past. Like traditional calculators of its kind, simply enter your crop and your yield to determine the amount of N, P and K being removed from the soil – classified into two categories: “With Stover” and “Without”. The eKonomics Nutrient Removal Calculator takes it to the next level with an exclusive “economic impact” feature. It reveals the dollar value associated with the nutrients being removed, making it easier than ever to determine how much to invest in fertilizer to maximize profits. Check out the video to see how it works.

The Nutrient Removal Calculator

The Nutrient Removal Calculator

Nutrient Removal Calculator tutorial

September 4, 2013

Fall Tips: Harvesting Stover Means You’re Removing Potassium...and Lots of It.

The onset of bioenergy has created a wonderful opportunity for farmers to harvest and sell stover for use in cellulosic ethanol. However, there’s a catch. Recent research conducted at Iowa State indicates that the removal of stover will dramatically lessen the amount of potassium that’s returned to the soil. Translation? Farmers harvesting stover will need to invest in up to three times more potassium to maintain the optimum nutrient levels necessary for maximizing profits. In this video, Iowa State’s Dr. Mallarino explains his research and findings.

Return of K to the Soil

The amount of K lost from physiological maturity, to grain harvest, to residue is significant.

Return of K to the Soil

Download Research Materials

August 6, 2013

Are Your Hybrids Getting Enough K?

Due to biological advancements over the last 50 years, hybrid yields have reached levels never achieved. But with greater yields, researchers have found a significant drop in soil nutrient levels to near or below critical. Dr. Paul Fixen of the International Plant Nutrition Institute shares recent research on the importance of K to new hybrids.

Average K Uptake Across Six Hybrids

New hybrids have an amazing rate of absorption compared to older varieties.

Average Uptake Across Six Hybrids

Download Research Materials

July 15, 2013

US Agriculture and Soil Fertility Trends

Robert Mullen, Director of Agronomy, PotashCorp and Jeff Holzman, Director of Market Research, PotashCorp

The past five years have been a turbulent time for the global economy, but agriculture has remained a sector of strength – in large part due to rising demand for commodities, higher crop prices, and above all, improvements in farm productivity. However, statistics indicate that productivity may drastically be impacted if soil test levels for phosphorus and potassium continue declining at their current rate. And with populations increasing and diets improving, the implications of continuing to draw down nutrient levels will become even more critical.

Read Full Research Article

US Potash Application and Crop Removal

Application rates have not kept pace with crop removal

US Potash Application and Crop Removal

June 28, 2013

Prepare for Drought Conditions with Proper Nutrient Management.

Results from a long-term P- and K- rate study on a corn/soybean rotation showed a dramatic response to elevated K levels as a means of combating drought effects on yields.

Yield Response to Elevated K in a Drought Year

During drought conditions, fields with elevated K levels,on average, achieved 80 bu/acre more of corn and 15 bu/acre more of soybean.

Yield Response to Elevated K in a Drought Year

Download Research Materials

June 3, 2013

Are You Among the Many Leaving Money in Your Fields?

Thanks to advances in technology, farmers have consistently increased yields in the last 15 years. But fertilizer applications have remained constant, causing many fields to drop below the critical levels for P and K. What are the business implications to you?

Declining Soil Test Levels

Potassium hybrid model for soybean and corn

Declining Soil Test Levels

Download Research Materials

June 3, 2013

How Midwestern Farmers Can Achieve Thousands More in Net Profits in 2013.

Dr. Robert Mullen uses an average size Iowa farm of 333 acres to illustrate how a sound investment in potassium could generate an economic return of $73/acre — which calculates to almost a $24,000 increase in net profit. See how this research could help improve your bottom line.

Potential Net Profit Increase By Investing In K

Potential Profits Increase By Investing In K

Download Research Materials

June 3, 2013

Get the Most Out of Your N Investment with Improved K Nutrition.

When most farmers think about potassium nutrition, they only consider the yield improvement they can achieve by making that investment. But as Dr. Robert Mullen points out, ensuring you have adequate potassium for your crops may also increase the return you get from your nitrogen fertilizer investment.

Interaction Between K and N

Interaction Between K and N

Download Research Materials

Field Reports

Thank you for subscribing to Potashcorp Field Reports Newsletter!

By submitting your information you will be subscribing to receive the PotashCorp Field Reports newsletter electronically.

X