Wheat growers commonly apply fungicides to their crops to optimize plant health and yield. Typical application timings include early April after the flag leaves emerge (Feekes growth stage 9) and at heading shortly after (head scab application/Feekes growth stage 10.5.1). TERRAMAR can be utilized in the same pass as a wheat fungicide during any application timing, offering another stress-fighting and yield-enhancing tool to optimize crop yield potential.

What benefits can TERRAMAR add to a wheat fungicide application?

• TERRAMAR minimizes the impact of weather-related stresses (e.g., cold and dry conditions) to help maintain normal physiological functions. 
  
  
• TERRAMAR increases nutrient uptake and photosynthetic capacity at a critical time of yield determination.

Nutrien Ag Solutions has conducted multiple field trials in which TERRAMAR was applied at different stages of wheat growth with a fungicide. As seen in the examples below, consistent yield responses and a positive return on investment (ROI)* were observed across the different timings, whether one or multiple applications of TERRAMAR were made with the grower’s standard practice (GSP). 

FLAG LEAF/FEEKES 9 FUNGICIDE APPLICATION

By Jeremiah Butler, Agricen

Early in the summer of 2023, widespread nutrient deficiencies were observed in the Corn Belt, particularly potassium (K) deficiency in corn. Due in large part to drier-than-average early season growing conditions, abiotic stress—or stress from environmental conditions—was more prevalent, impacting crop physiological development and reducing nutrient uptake during a critical phase.

Beginning in mid-June, a number of crop consultants were reporting an interesting phenomenon. Corn fields treated with a foliar application of TERRAMAR in the V3-V7 growth stage visually appeared to be healthier and were not exhibiting the same level of K deficiency symptoms as untreated corn.

As a result of these observations, trials were conducted on later-planted corn in Minnesota and Michigan, and on a soybean field in Indiana to evaluate the impact of a V4 application of TERRAMAR on nutrient uptake and abiotic stress reduction. Corn nutrient demand significantly increases after the V4 window to produce a healthy, high-yielding crop.

In the Minnesota trial, a foliar application of TERRAMAR (1 quart/acre) was made at V4, followed by rigorous tissue sampling to determine nutrient uptake levels of treated versus untreated plants. A total of 135 tissue samples were taken at the V9 growth stage (10 days after application) hourly over a 12-hour period (7 am to 7 pm). In addition, leaf surface temperature readings of treated and untreated plants were taken to evaluate canopy temperatures. Higher ambient air temperatures during the trial period were an indication that the corn crop was experiencing moderate heat stress.

Compared to the untreated corn, TERRAMAR increased the uptake of the majority of nutrients into the corn leaf tissue (Fig. 1). Potassium uptake was particularly notable, showing a 38% increase compared to the untreated corn.

As growers finish putting this year’s crop in the ground, Agricen’s Scott Lay spoke with WITY Radio’s Dennis Michelsen about TERRAMAR, a foliar product designed to help crops increase nutrient uptake and better tolerate weather-induced stress.

Dennis - WITY Radio:It’s impossible to predict the weather long term, but we know that something will always put our crop under stress every growing season. Would it be fair to say that the main reason a producer would want to add TERRAMAR to their lineup is to reduce stress?

Scott - Agricen: That is the essence of it. Weather-induced stress is one of the greatest yield robbers that farmers face. Up until this point, short of going to church on Sunday and praying for more moderate temperatures and rain, there's not been a heck of a lot we could do to address stress.

TERRAMAR was new to the row crop market last year, during which nearly 2M acres were treated. It does two things. One, it has a biologically extracted kelp component that minimizes the effects of weather-related stress, such as heat, drought or early season cold. Secondly, it has a biologically extracted carbon component that stimulates the plant to pull in more nutrients to aid in chlorophyll production and photosynthetic capacity, as well as increase carbon fixation in the plant. In this way, TERRAMAR provides a one-two punch that equals a better chance for yield at harvest time.

Whether conditions are “ideal” or stressful, the key is to be prepared for whatever the growing season brings so that you can reach your yield goals.

In this on-demand webinar hosted by CropLife, "Stand Up to Stress for Higher Yield & ROI," you'll learn:

• What abiotic stress is
  
  
• How ag biologicals and biostimulants fit into crop stress and plant health management programs
  
  
• How TERRAMAR, a new foliar technology for agricultural crops, enhances plant performance while mitigating the impacts of abiotic stress

More than three dozen farmers in the 2023 National Corn Growers Association (NCGA) Corn Yield Contest used Agricen's biocatalyst technologies in their winning programs. They include four farmers who took top places at the national level and 34 who took top places in their states. 🏆

The winning growers used one or more of the following products in their corn fertility programs: Accomplish MAX, Ensurgo, Extract PBA, Levitate, Maritime, Prologue, Terramar and Titan XC. All of these products are exclusively available from our partner, Loveland Products, through Nutrien Ag Solutions.

Last season, Terramar was applied on over 2.7 million acres of row crops, including corn, soybeans, wheat and cotton. In this blog, we answer common questions about using Terramar in row crop programs.

What is Terramar?
Terramar is a breakthrough product that combines a biologically extracted kelp source and biologically extracted leonardite, which is a carbon source. It is intended for foliar applications in row crops at vegetative and reproductive stages. Terramar supplements a balanced crop nutrition system by helping to maximize plant performance and yield across any type of growing condition.

Why use Terramar in row crops?
Terramar is formulated to increase nutrient uptake and enhance stress mitigation, which can optimize plant health and contribute to enhanced yield. In 76 trials conducted from 2019 to 2023 across corn, soybeans, wheat and grain sorghum, Terramar offered an average yield advantage of +7.12 bu/acre compared to untreated check.

 

With dry, hot weather having impacted many areas of the country, Agricen's Scott Lay spoke with Dennis Michelsen of WITY Radio to discuss how Terramar is helping corn and soybean growers minimize the effect of drought and heat stress on their crops.

Dennis - WITY Radio: After a long duration of dry weather that we had during this growing season, we're getting a great chance to see just how much Terramar is helping reduce some of that drought stress we saw.

Scott - Agricen: Terramar is a new product to the Midwest and row crops. More importantly, it's a new practice. We now have a technology available to us in our arsenal that will help minimize stress.

Dennis - WITY Radio: This product is all about standing up to stress.

Scott - Agricen: We know that if the nighttime low does not get below 70 degrees Fahrenheit, that's a bad day for the corn plant. That impacts yield. We also know from our replicated studies with Terramar that we're able to decrease the crop canopy temperature by a measure of three to five degrees Fahrenheit for a period of three to four weeks. Again, that's not going to eliminate the negative impact of extremely hot temperatures, but it sure takes a bite out of it.

Dennis - WITY Radio: How is Terramar working on soybeans this year across the Midwest?

Lee Lubbers, an XtremeAg grower in Gregory, South Dakota, tried Terramar for the first time in 2022, testing it across fields with different yield environments. 

"We were very intrigued by Terramar being a stress mitigation product," says Lee. "We ended up applying about 4,000 acres worth of Terramar on corn."

His first trial was in a field that was traditionally in the bottom one-third when it comes to yield.

"It ended up showing that the Terramar is 7% better than the untreated," he says. "In our yield environment this year, to get a piece of ground to do this, and then to see a 7% increase...If we take that times 120 bushel, that's going to be about $60 an acre to our pocket. I'll take that all day long."

Many agricultural areas across the United States are facing weather-related challenges, but there are still opportunities to make the most out of what Mother Nature is dishing out.

Terramar, a new product for row crops, is formulated to help crops stand up to abiotic stresses (such as heat and dry conditions) while also increasing nutrient uptake for better plant growth.

The photos below document the performance of Terramar applications made on corn, soybeans and wheat earlier this season, and they show some very strong visual results.

With another opportunity to apply Terramar now here (this time with fungicide or plant nutrition products on reproductive-stage corn and soybeans), we wanted to share these images as a reminder of the potential in this year's crop.

Here are the top 10 Terramar field pictures of 2023, so far:

Growers know all too well that hot and dry conditions can contribute to yield loss in corn and soybean crops, especially when these stresses last for a prolonged period of time. Terramar gives growers the opportunity to mitigate the effects of these weather-related stresses so that their crops can hold on to their yield potential.

There are two key opportunities for making a Terramar application on corn and soybeans.
The first opportunity to apply Terramar is with the early post herbicide pass, typically at the V4-V5 growth stage in both crops. The second opportunity—one that is approaching soon—is with a fungicide or foliar plant nutrition pass on corn and soybeans. For those who have already applied Terramar earlier in the season, a two-pass program (first at the early vegetative growth stage, then at the reproductive stages) may be beneficial, particularly if crops are under prolonged stress.

In corn and soybeans, the window for applying Terramar with fungicide or plant nutrition products is:

• Corn - V10 (early season) through R3 (tar spot)
• Soybeans - Pre-bloom through R3

All Terramar applications made at reproductive stages should be at a minimum rate of 1 quart/acre. Applications can be made by airplane, helicopter or a ground rig.

Below are two examples of recent trials in which Terramar was applied at reproductive stages in corn and soybeans, leading to yield increases compared to the grower's standard practice.