By Brian Cornelious, PhD, Agricen

The use of starter fertilizer, aimed at getting plant nutrients in a concentrated zone close to the point of seed placement, is a common practice in some parts of the country.

A standard starter program for corn in the U.S. Corn Belt is 3-5 gallons of ammonium polyphosphate (10-34-0) plus 1 quart of zinc per acre. More progressive growers have gravitated towards readily available orthosphosphate blends containing micronutrients or other enhancements like biostimulants. Regardless of the rate, timing, source and amount (the “4Rs”) of the practice, the goal is the same: Get the most out of every nutrient applied for better early growth and development.

Conversion from polyphosphate to plant-available orthophosphate takes place in the soil, where microbes and soil chemistry both play a role in making the applied and existing soil nutrients available to the plant, as well as in the timing of nutrient release into the soil solution. For any liquid starter program to be successful, growers must consider several key factors like soil test values, crop yield goals, field conditions and potential for nutrient release when the crop needs them most.

In an irrigated corn trial conducted in Benzie county, Michigan in 2022, adding Accomplish MAX to the grower's standard practice (GSP) starter fertilizer led to impressive yield results. 

Accomplish MAX was added to the GSP starter fertilizer at two different rates (1 pint/acre and 1 quart/acre, the recommended rate) and then compared to the GSP alone. The GSP 2x2 starter fertilizer blend consisted of UAN 28% (7.5 gal/acre), ammonium thiosulfate (ATS, 3 gal/acre), 10-34-0 (7.25 gal/acre), and Pro Zinc 10+ (0.25 gal/acre). The grower's fertility program also included a dry fertilizer broadcast application of 46-0-0 (300 lbs/acre) plus 0-0-60 (100 lbs/acre) applied over corn stubble. The field was no-till, corn on corn.

Adding Accomplish MAX at either rate provided both a yield advantage and a return on investment (ROI) for the grower.

Accomplish MAX, a next-generation biocatalyst that provides nutrient efficiency and crop stress tolerance benefits, is now available from Loveland Products through Nutrien Ag Solutions retail locations. It is designed for use with in-furrow starters, 2x2 placement of liquid fertilizers, and liquid sidedress applications.

Accomplish MAX is a proprietary combination of proven Accomplish biocatalyst technology, which growers have used for over a decade to improve nutrient mineralization and uptake on millions of acres across the United States, and cutting-edge kelp technology designed to enhance crop tolerance to abiotic stressors such as cold temperatures, drought and fertilizer salts. 

Key benefits of Accomplish MAX:

• Increases nutrient availability and uptake by mineralizing nutrients in the soil
• Improves plant tolerance to abiotic stresses such as cold temperatures and salinity from commercial fertilizers
• Enhances overall plant performance to help growers reach their yield potential

Fifth-generation farmer, Dave Kolb, of Kolb Farms near Paynesville, Minnesota, is one of 11 children who grew up working on a dairy farm with his siblings and parents. The Kolbs have been in this area since their ancestors arrived to homestead in 1861.

Today, Dave farms and dairies with three of his brothers and his mother. They employ a corn, oat, alfalfa and wheat rotation to produce forage and grain for the 500 cows that they milk. They also raise their own replacement heifers. It is a very busy operation, but Dave and his family members have seen their hard work pay off, including as entrants in the National Corn Growers Association (NCGA) Corn Yield Contest.

By Jeremiah Butler

As we enter planting time and growers make final decisions for the coming crop year, many growers will consider using in-furrow products. There are several reasons why they should research and consider in-furrow applications.  

Many of you have heard Dr. Fred Below of the University of Illinois talk about his “Seven Wonders of the Corn Yield World.” As we look at the factors below, we can see that there is no silver bullet. Attaining a high yield truly takes a systems approach!

Growers know that uniform corn emergence is a must for achieving great yields. Recent research shows that a delay in emergence of just 12 to 14 hours can affect yield potential.

In side by side field trials at three different locations led by North Carolina State University cropping systems specialist Dr. Ron Heiniger, an in-furrow application of Accomplish LM promoted uniform corn emergence, increased row and kernel number, and increased ear weight by 1/8 lb compared to check (10-27-0 applied in a 2x2 band). Uniform emergence was associated with higher yields: Accomplish LM increased the average yield by +11.5 bushels per acre.

This year, many parts of the country dealt with above-average to excessive spring rains. Wet conditions set the stage for denitrification (converting nitrogen in the soil system into N₂ gas) and nitrate leaching, which may explain some of the yellowing growers have observed in fields where there has been a lot of moisture.  

Soybean Startup is a tank mix of Accomplish^® MAX and Radiate^® applied in-furrow at planting. The goal is to get soybean plants off to a better, faster start and enhance productivity. In trial after trial, this program keeps giving a standout performance in the field.

The soybean plants in the pictures below were planted on May 28^th, 2015 in Greensburg, Kansas, by a grower who had trialed the Soybean Startup program on half of his acres. The beans on the left were treated 2x2 with 10 gallons of 16-0-16-5 alone, while the beans on the right were treated 2x2 with 10 gallons of 16-0-16-5 and plus the Soybean Startup in furrow. Pictures were taken mid-June.

I’ve never used a starter program for my soybean plants. Nutrient deficiencies are not as common as they are in corn, and the salt in traditional fertilizers can harm the seedlings. Why would I consider a soybean starter program now?

It’s true that traditional starter fertilizers are not typically used for soybean crops, for both of the reasons that you’ve pointed out. However, like growers of other crops, soybean growers can benefit from tools that help improve plant health and yields. Accomplish^® MAX and Radiate^® are plant health products that can be used together as a “starter program” for soybean. They contain no salt and provide a cost effective way for growers to improve plant vigor, reduce plant stress and increase productivity. With an early application of these plant health technologies, growers can improve the health of soybean plants from emergence through yield, all while maximizing the efficiency of their total plant nutrition program.

By Daniel Kaiser, PhD, University of Minnesota

In areas where spring is cool and wet, banding fertilizer with the planter can benefit corn crops. Although application of dry fertilizer with the corn planter has played an important role historically, it has become less common with increasing acreages and planter sizes. Instead, liquid fertilizers have steadily replaced dry for supplying nutrients to the corn plant early in the growing season.

The primary benefit of applying low rates of fertilizer directly on the corn seed is more rapid growth early in the growing season. Increased early growth can be viewed as an insurance policy, ensuring that plants reach critical periods of growth faster. Low rates of phosphorus can significantly increase the amount of growth, even in fields where soil phosphorous test levels are high. Our research in Minnesota has demonstrated that as little at 10 lbs P₂O₅ applied with the planter can produce sizeable increases in plant mass early in the growing season. This increase has been shown to speed development and decrease the time to silking by one to two days.