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.

How can growers get the maximum benefit from existing and applied nutrition to maximize their yield and return on investment?

Watch our on-demand webinar, "Early Season Opportunities to Enhance Nutrient Availability with EXTRACT PBA," to see:

• How Extract helps unlock the nutrition crops need from the soil, organic and inorganic nutrient applications and the previous season's crop residue for maximum yield
  
  
• How to get the most utilization out of applied and residual nutrition with Extract
  
  
• Results from corn, soybean and wheat trials

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.

Agricen's Scott Lay recently spoke with WITY Radio’s Dennis Michelsen about why pairing Extract PBA with crop fertility programs makes sense.

Dennis - WITY Radio: Before you know it, it will be time to get the 2024 planting season going, and if you want to get the most out of your fertility program, you really need to find out more about Extract.

Scott - Agricen: Applying nutrients is simply step one. The next question is, “What can you do as a farm operation to enhance the availability of those nutrients that you’ve applied?”

Dennis - WITY Radio: The key is not to reduce what you're putting down. It's just to get more value out of every dollar from your fertilizer program.

Scott - Agricen: That's right. Extract is not a replacement for fertility or nutrients. But it is a technology that is available today to aid in the mineralization of nutrients in the soil profile and in the release of nutrients bound by calcium, magnesium or other components in the soil, so that they can be available for your crop.

Jason Jaggers is a third-generation corn and soybean farmer in Wyanet, Illinois. When it comes to getting advice from his Nutrien Ag Solutions agronomist, Chad Taylor, he knows he has someone he can count on. Chad is not only his agronomist, but also his childhood friend. 

"Chad and I grew up together. Now he's my Nutrien agronomist. If he brings a product to me, he knows it better perform," says Jason. "He's also a grower himself, so he understands that."

Two of the products that Chad has introduced to Jason are Titan XC and Extract PBA. They are biocatalyst technologies that help growers "do more with less" by enhancing nutrient use efficiency. 

"As he's brought Titan, Extract and multiple other products to the table, they've all performed very, very well," says Jason. 

In the fall, Titan XC on dry fertilizer is a particularly important part of the equation. 

"If you're making a fall application of fertilizer, it needs Titan XC," say Chad. "Titan brings multiple levels of benefit...being able to take a growers fertilizer dollar and increase it by upwards of 20 percent."

On Chad's recommendation, Jason has used Titan XC on his fall dry fertilizer for the past decade.

Agricen's Scott Lay recently spoke with Dennis Michelsen of WITY Radio about using Titan XC on fall-applied dry fertilizer blends.

Dennis - WITY Radio: In the fall season, we always talk about Titan XC. Talk a little bit about how it helps growers get the most out of fall fertilizer applications.

Scott - Agricen: Titan XC is applied on dry phosphorus and potash to help mineralize and break down those fertilizer prills, making them more available for next year's crop.

How can growers enhance the efficiency of their fall-applied dry fertilizer blends to maximize yield and return on investment? 

Watch our on-demand webinar, "How to Enhance Dry Fertilizer Efficiency to Maximize Yield & ROI," to hear:

• How to enhance the efficiency of your fall dry fertilizer application
  
  
• What you can do to improve nutrient recovery after applying dry fertilizer blends
  
  
• How to increase yield and return on investment in any crop production system with Titan XC on your dry fertilizer blend

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?

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: