TriEst Ag Group is hiring. Even when we aren’t hiring, we’re excited to hear from knowledgeable people who may be a great fit for our company. We are a distributor and applicator of soil fumigants, irrigation, fertilizer, equipment, grafted plants, and other products with a focus on fresh fruits, vegetables, and tobacco. We have developed a unique group of company brands that allows us to offer growers our support from pre-plant through harvest, season after season.
We have positions in the field applying our soil fumigant products, building and installing irrigation systems, and working directly with customers. TriEst has 6 walk-in branch locations across the southeast to serve growers and support sales regions across the US. We also have the corporate office that handles management, paperwork, accounting, etc.
As an industry leader with more than 50 years’ experience, TriEst Ag Group offers innovative options and solutions that protect crops, people, and the environment with honest, long-term relationships that make us the first call a grower makes when they need help. We are a part of the family of companies known as the TriCal Group. While TriEst has multiple locations throughout the southeast, the TriCal Group family of companies is world-wide with more than 25 affiliated companies and even more locations. We hire from within where possible so that our employees have room to grow.
Come join our team.
Jobs in:
Sales (Outside & Inside)
Licensed Applicators
Irrigation Techs
Agronomy
R&D
Accounting
Finance
Administration
And more
If you’re interested in working with our company and becoming part of the team visit our Career Page and Indeed.com for our current open positions and/or send your resume to HR@triestag.com.
Let’s break down the facts on why Chloropicrin is a powerful tool for providing consistent return on investment for growers of specialty crops around the world. Chloropicrin can be used to optimize soil health and productivity by combating pests and stimulating beneficial soil microbes.
Chloropicrin has been used as a foundational agricultural product for soil-borne pest suppression in specialty crops throughout the world for over 60 years. It is a bio-nutritional soil fumigant, that breaks down into elements that are naturally utilized by plants: carbon, chlorine, nitrogen, and oxygen. After breaking down, there is no reside left in the soil, which in turn results in no plant residue.
After being applied into the soil as a liquid through shank (broadcast or in-row) or drip system application, Chloropicrin rapidly becomes a gas that does not move down or into ground water. It does not need to activate with water and moves through soil pore air space for a wide area of effect.
Chloropicrin does NOT sterilize the soils it is used in. It shifts the soil microbial community creating an environment for native microbial populations to thrive. It has shown to have novel effects on soil microbiome as a bio-stimulant, in addition to pathogen suppression. Increases in the abundance of native fungi and bacteria such Trichoderma, Bacillus, and Pseudomonas have been seen in many on-farm trials across a wide range of geographies and cropping systems.
The shifts within the soil microbiome generate a wide range of effective use rates for Chloropicrin based on targeted prescriptions that are determined by pest pressures, crop rotation programs and grower yield goals. We recommend higher dose ranges for season long suppression of major soil-borne pests and lower dose ranges for increases in crop stand establishment and accelerated growth.
Through soil analysis we see soil microbiome shifts across all rate ranges, resulting in better germination, early plant vigor and uniformity. Contact us today to see first hand what Chloropicrin can do for your soil, crops, and marketable yields.
TriEst Ag Group proudly celebrates Smart Irrigation Month by helping growers maximize water-use efficiency every day.
Smart Irrigation Month is a public awareness campaign to promote efficient water use. Focused on July, Smart Irrigation Month highlights effective practices and innovative technologies to
increase crop yield per acre.
apply water and nutrient inputs more precisely for improved results with little to no waste.
minimize runoff and topsoil erosion.
help protect and preserve water supplies for today and the future.
Smart irrigation technologies equip farmers with information they need to know regarding when and how long to irrigate. They can input variables like crop water needs and soil type, while using scheduling programs that monitor local weather conditions and soil moisture.
These data points give farmers the information necessary to irrigate with precision, minimizing stress from over- or under-watering. With a finger on the pulse of your crop’s water needs, crop quality can be improved and yields can be maximized.
TriEst Ag Group believes in smart water-saving practices and is dedicated to delivering real results by helping growers
design irrigation systems with zones and irrigation scheduling programs for more efficient water and fertilizer use.
install irrigation systems that use real-time weather data and soil moisture sensors to automatically adjust watering to meet crop needs.
precisely apply water and nutrients to minimize evaporation, runoff and waste.
qualify for government financial assistance to conserve ground and surface water and improve water quality.
meet federal, state, and local environmental regulations.
For more information about how TriEst Ag can help you be more efficient contact us today.
Smart Irrigation Month is an initiative of the Irrigation Association, a nonprofit industry organization dedicated to promoting efficient irrigation. Visit www.smartirrigationmonth.org to learn more.
Common knowledge or conventional wisdom is just that, something that is generally accepted as fact, until it isn’t. We can look throughout history and find plenty of things that were generally accepted until new discoveries challenged and disproved those things. For decades, the living, microscopic portion of our soils has been somewhat of a mystery. If the organism wouldn’t grow in a petri dish, it was difficult to know if it was present and if its’ populations were increasing or decreasing. Modern techniques have provided far greater insight into the microbial world that lives unseen in our soils. We can now extract genetic information from a teaspoon of soil and determine which organisms are present through their genetic fingerprints.
Now on to soil fumigation: the process of applying a liquid below the soil surface which subsequently transitions to the gas phase and the vapors move through the soil profile. These vapors are present from days to weeks based on the chemistry and application technique. Depending on the fumigant used, the vapors can be toxic to soil borne pathogens, nematodes, and weed seeds. This is why soil fumigants were originally put into use, to control soil borne diseases. Based on this information, it is easy to jump to the conclusion that soil fumigation would have devastating impacts on soil microbial communities. In fact, we often hear that soil fumigants sterilize the soil. Reducing populations of certain organisms such as Fusarium or Rhizoctonia are advantageous, but there are multitudes of organisms that are beneficial to plant growth and soil function, and it has been assumed that these have been equally reduced like the pathogens.
Enter modern techniques. A group of scientists at the University of Florida have been investigating the impact of soil fumigation on microbial communities and recently published some of their findings (https://www.sciencedirect.com/science/article/abs/pii/S0048969724007988?via%3Dihub)1. This group looked at soil microbial communities in a plasticulture tomato production system before and after fumigation with several different fumigant treatments as well as beds that were left untreated. First off, even the most effective soil fumigants don’t sterilize soils. There are a multitude of organisms that were found shortly after fumigation. They also found that fumigant treatments with greater than 60% chloropicrin consistently increased tomato yield, which is why producers use these products. The use of fumigants resulted in significant changes in the soil microbial communities and fumigants reduced the microbial diversity of soils, but these changes are temporary and those soils reverted to their original state by the next growing season. Some of these changes in microbial complexity could hinder some of the major functions of microbes in the soil such as nitrogen metabolism and carbon fixation. So, these findings do not come as a huge surprise to anyone who is familiar with soil fumigants and how they function.
Castellano-Hinojosa et al. 2024 – Graphical Abstract
But you know how we mentioned common knowledge earlier, well here’s the challenge to that. Most readers of this article are probably familiar with beneficial organisms that are naturally present in the soil or can be purchased and applied, often referred to as “bug in a jug” products. Some of the most common products available contain various species of Bacillus bacteria or Trichoderma fungi. These researchers found that the abundance of Trichoderma was increased after treating the soil with chloropicrin, even more than the untreated. Yes, you read that correctly. The abundance of Trichoderma was greater after treatment with chloropicrin compared to doing nothing and that change persisted until the end of harvest. A similar pattern was observed for Bacillus and Paenibacillus species, both of which serve beneficial roles in the soil.
Soil fumigants play a critical role in many production systems and are a necessity to manage major yield limiting pests. However, are these the only uses for soil fumigants? Based on this University of Florida research, could we use chloropicrin, a soil fumigant, to increase the abundance of naturally occurring beneficials like Trichoderma? Could a soil fumigant be used in the role of a bio-stimulant? That would certainly be a challenge to conventional wisdom.
Feel free to contact us to discuss these ideas further and to learn more about what chloropicrin could do in your field.
Ref: Castellano-Hinojosa A, Karlsen-Ayala E, Boyd NS, Strauss SL (2024) Impact of repeated fumigant applications on soil properties, crop yield, and microbial communities in a plastic-mulched tomato production system. Science of the Total Environment 919: 170659; doi: https://doi.org/10.1016/j.sciotenv.2024.170659↩︎
There is a lot of talk about sustainability and regeneration in agriculture these days. But what do those terms really mean? If you ask five people, you might get five different definitions. But for Josh Mays, Director of Agronomy for TriEst Ag Group, it all starts with profitability. Mays says “We should all be critical of how farming practices impact the ecosystems around the farm, but we can’t be sustainable without being profitable. There is nothing sustainable about the loss of farms in the United States due to financial instability.”
To put that statement into perspective there are only an estimated 1.89 million farms to feed 332 million people in the United States or 0.5%. According to Yahoo Finance, America has had an average loss of nearly 1.8 million acres of farmland per year since 2015.
He says profitability always has been important, but it is even more so today when there are so many factors that could take valuable farmland out of production. Challenges include competition from urban development, trouble sourcing labor, regulatory burdens, foreign competition impacting markets and the aging demographic of specialty crop growers.
“How do we keep our growers profitable? The economics need to be better for them to farm their land than to sell it for development or other uses,” Mays says. “Our intention at TriEst Ag Group is to help farmers keep farming.”
The company’s core customer base is in plasticulture specialty crops like strawberries, tomatoes and peppers. Other key customers include bare ground sweet potatoes, potatoes, snap beans, sweet corn, and vegetable crops.
Green Bean Field Trial in Florida
GETTING TO KNOW GROWERS
Mays says TriEst Ag Group helps growers key in on profitability by learning about their operations and finding ways that their products and services can be a benefit.
“We go very deep working with growers. That is what my job is all about,” he adds. “We take a step beyond just our products to discover what is the best approach to profitability for each farm. We work with growers to go over fertility programs, to consider variety selection, field selection and testing for what levels of pest problems they have in their soils. We holistically build a program that includes our products where they can help the grower but also are a part of a larger program.
“We are a spoke in the wheel. We want to better understand everything farmers have going on, so we can help them figure out the most economical solution to the challenges they face.”
PORTFOLIO OF SOLUTIONS
TriEst Ag Group has a wide range of products and services that can help growers achieve profitability. The company specializes in soil fumigation, irrigation, crop nutrition, equipment, grafted plants, polytunnels, substrate and associated growing systems.
Soil fumigation with two key products, chloropicrin and 1,3-D (TELONE™), has been foundational in helping growers get their specialty crops off to strong, clean starts. Mays says these products have been studied extensively to maximize crop yield, quality and performance, especially since methyl bromide was phased out.
“These two products have been the subject of years of research and millions of dollars invested by universities and the private sector,” he says. “They are now the foundation of what we do to make up for the loss of methyl bromide. 1,3-D is effective in managing nematodes while chloropicrin manages soil-borne pathogens.
“We’ve seen advancements in plasticulture and tarps to create a better barrier that holds these products in the ground longer at higher concentrations. This allows us to consider rate reductions and achieve more efficacy. And it forced us to be more integrated and innovative in our approach to better manage pests. We’ve been successful in doing that through our collaboration with our grower customers.”
FOCUS ON SOIL HEALTH
Mays says another area of intensive research has been maximizing soil health in fields. The study of the soil microbiome is a hot field now in all of agriculture.
“We are doing a lot of research on how our products interact with the soil microbial system,” Mays says. “We know we must manage nematodes and soil pathogens to produce a healthy crop. We are seeking the best ways to utilize our fumigants to provide the best suppression and have been studying how our fumigants alter the microbiome.”
The research has turned up encouraging results. The use of chloropicrin and 1,3-D has been shown to not ‘sterilize the soil’ as some have said.
“Science shows when you apply these products, you shift the microbial community. You get shifts of certain organisms, and there are others that take their place that are often beneficial organisms. We are learning now how to better utilize that shift. There is an entire new science emerging around the interaction of those microbes and our products, across a wide range of rates and new crops.”
MAXIMIZING ACREAGE
The goal of TriEst Ag Group’s relationships with growers is to help them get more productivity and profitability from each acre of their crops.
“If we can learn new ways to innovate and create more yield on an acre and seek ways to be more efficient and reduce costs where we can, that is key to profitability,” Mays says. “If we were to take our core soil fumigants out of the equation, then you might see specialty crop yields drop by 30%. That will take 30% more acres of land to replace, and all the other inputs needed to grow the crop. That is not sustainable or profitable. We take great pride in working closely with our growers to bring them solutions that keeps that acre of farmland in farming.”
HOW CAN TRIEST AG GROUP HELP YOU?
If you are interested in learning more about TriEst Ag Group’s products and services contact us today.
We hinted at the end of our blog article – 2023 Trial:Impacts of Soil Fumigation of Tobacco – that we also did trials on sweetpotatoes that compared mixtures on Enterolobii nematode control and dual applications on seed production. Track number 1: why high why nematodes? Answered further in this article. Track number 2: why did we get late season resurgence?
In this blog we will go into more detail on those trials, the outcomes, and the implications.
In the Summer/Fall of 2022 TriEst Ag Group did a mixture study that focused on Enterolobii in Nash County, NC. The trial evaluated the use of TELONETM, C15, and C35 at 6 GPA (22 GPA broadcast) shank applied in-row 14” deep with 10” of stack. The row was re-shaped to 5-8” in front of planter. The field had a heavy Enterolobii (Guava Root Knot Nematode or GRKN) pressure.
We fumigated the field May 11, 2022, the field was planted June 14, 2022, and harvested October 24th, 2022.
This chart shows that Guava Root Knot Nematode (GRKN) resurged in all 3 plots. Damage was observed in all plots as well, but was worst in C35, which would be expected from the treatment with the least amount of TELONE being applied.
Despite C35 having the worst GRKN levels and damage it still provided the highest yields and the best crop throw showing a clear benefit to having Chloropicrin in the system. For this growing region that is focused on table stock production, bushes of #1’s per acre is critical.
The results of this trial left us with a significant observation and question, why did we have the highest yield in a treatment with the highest volume of nematodes at seasons end?
Nematode pressures rose in the last 30 days of the crop, even with very good suppression of the pest after each treatment application. Why did we see a late season resurgence of nematodes? How mobile is GRKN and are they moving from untreated areas back into the root zone? Would a deeper application work? Would a wider area of application make a difference?
While we answer the question of why did we have the highest yield in a treatment with the highest volume of nematodes at season’s end in this article the remaining questions this trial spurred we will answer in a future article on another field trial from 2023.
Back to the impact of chloropicrin…
The following summer/fall of 2023 we decided to look at TELONE and TELONE with PIC applied in a dual level application to see if we could build off of what we learned in the 2022 trial.
The trail took place in Nash County, NC again, but this trial purposefully had low root knot nematode pressure. The primary goal was to see the impact of Chloropicrin on the crop and build off of what we learned in 2022.
The sweet potato crop in this trial was grown for seed, where growers are targeting heavier tuber sets and smaller size profiles overall, which is what we saw in the 2022 trial harvest.
We fumigated 6/3/2023 with TELONE at 6 GPA in-row (22 gallons broadcast) and TELONE at 6 GPA in-row plus 20lbs PIC100 (75lbs broadcast) in a dual application 8” PIC and 14” TELONE. Everything was shank applied in-row with a ripper bedder at 14” with 10” of stack. The row as reshaped to 5-8” in front of the planter.
The field was planted on 6/23/2023 and the crop was harvested on 10/20/2023.
The conclusion from this trial was that the addition of a low dose of Chloropicrin (75lbs Broadcast/20lbs BER) increased the tuber set. This resulted in a higher yield and smaller size profile overall. This is a big advantage for seed growers. We feel that getting the Chloropicrin dose as close to the where the root system will be (6-8” beneath final planting depth) is important. For nematode management, TELONE should be applied 12-16” deep to treat the highest volume of soil possible, which is why we looked at dual application as opposed to a blend with both products being applied down deep.
In conclusion, the key takeaways from these trials would be that higher sweet potato yields can be achieved when a low dose of Chloropicrin is used to increase set. TELONE is critical for nematode management and depth of application is important in regards to location of the pest in the soil profile. Dual level application with Chloropicrin applied in the root zone and TELONE applied beneath the root zone increases tuber set while also maximizing nematode management.
Remember to subscribe so that you don’t miss our future blog article on our work in sweetpotatoes that will answer the questions of why did we see a late season resurgence of nematodes? How mobile is GRKN and are they moving from untreated areas back into the root zone? Would a deeper application work? Would a wider area of application make a difference?
To learn more now or talk to a representative about seeing what Chloropicrin can do in your field Contact Us Here.
At the close of the 2023 Irrigation Show, the IA (Irrigation Association) added four newly elected directors to the IA Board. One of those four is Erwin Newell of TriEst Ag Group. Directors are elected to three-year terms by members of the association. The IA Board of Directors monitors current and evolving industry trends, determines strategic priorities, defines public policy positions and acts as a steward of the IA’s financial resources.
Erwin Newell and the other three newly elected directors join 13 other members who serve on the IA Board. Their contributions are essential to the IA’s work to elevate the impact and value of the industry and create an environment where irrigation businesses can grow and thrive.
You can read about all four newly elected IA Board Directors on the IA Board of Directors page on the IA website.
Erwin Newell is the Vice President of Business Development and Irrigation for TriEst Ag Group. He started in sales and design as the first full-time employee at B.B. Hobbs in 1990. His responsibilities at B.B. Hobbs over the next 25 years ranged from sales manager to overseeing operations to managing a construction division and being named vice president. Following two mergers, Newell began his current position with TriEst Ag Group. He currently participates on the board of Landmark Irrigation as well as the Board of Reddick Equipment Company. Throughout his career, Newell has served as an advisor on boards of the North Carolina Tomato Growers Association and the North Carolina Vegetable Growers Association. He has been involved in his church and participated in mission projects in Africa and Mexico.
“The agricultural irrigation industry is changing at a rate greater than anytime during my over 30-year career. Mergers, acquisitions, aging industry leaders, changing markets, water supply, technology, urban development and other factors are impacting the agricultural irrigation industry. Ag irrigation distribution is largely doing business the same way it has for years, but in order to be profitable, attract the best and brightest talent, meet the needs of a changing customer base, most efficiently use resources and be sustainable, it needs to change. I am excited about the potential to work as part of the IA Board to identify and promote ideas and initiatives that foster positive change.”
Based on the findings from those trials in 2021 and 2022 TriEst wanted to take a deeper look at finding unique application and timing solutions to better meet a grower’s nematode and disease pressures. The 2023 trial focused on sampling depths to map location of pests, dual depth applications to place the correct product in the right place, and a variation of treatments to proof out these concepts.
We prepared different application levels to best place TELONE™ and Chloropicrin where nematode problems were the previous season at depths of 12” to 18” due to cool soil temperatures in early spring driving nematodes down to more temperate soil levels. In the Fall, nematodes are up high in the soil profile due to warmer soil temperatures and available food sources from crop roots being grown through the summer. Fall is a challenging application time for tobacco growers due to harvest of tobacco along with rotational crops and timing of crop contracts for the next season. In most cases, growers haven’t finalized plans for planted tobacco acres for the following season until late Winter. This makes finding a Spring application solution critically important.
Soil samples were pulled monthly throughout the season at dual depths of 0” – 8” and 9” – 16” from both in the row and the row middles. This sampling protocol allowed us to map the movement of nematodes from deeper in the soil profile up into the root system, as well as from the row middles into the row. Shown below in the soil samples. The darker color soil (right) is from the deeper level of 9” – 16”. Note the soil type differences in the soil probe and final sample collection bags, this visually highlights the potential need for dual application, as nematodes in the Spring are concentrated in the deeper soil profile (9-16”) and soil borne pathogens in the shallower soil profile (0-8”).
9-16″ green bucket and 0-8″ red bucketTop bag is 0-8″ and bottom bag is 9-16″
We designed an application strategy that would place TELONE™ and Chloropicrin within the soil sample zones described above and compared the dual depth application to the grower standard single depth application on the bottom of the shank. All applications were made in-row treating 25% of an acre, with a 12” application zone on 48” row centers. See the picture below, the top outlet is 8” below the soil line and the bottom outlet is 14” below the soil line. At the time of application, there will be an additional 8-10” of soil stacked on top during the bedding process.
Unlike our trial in 2022, this trial didn’t show a late season nematode resurgence. Pre-fumigation root knot nematode levels warranted treatment, but all treatments cleaned up this issue. We expected additional nematode pressure to come from the row middles and to move up from below our application depths, which happened in 2022. Yields were not impacted by nematode pressure; however, they were heavily impacted by Grenville Wilt. The significant differences you see in yield in the chart below between the non-treated check and all other fumigant treatments are due to early season growth responses from Chloropicrin and suppression of Granville Wilt. All fumigant treatments performed well over the non-treated check, with little separation between the grower standard of PIC100 at 50 lbs/acre and the additional treatments including TELONE™. Again, this was a result of lower than anticipated root knot nematode levels from mid-season through harvest. The highest yielding treatment was the dual depth application of TELONE™ and Chloropicrin, likely due to getting Chloropicrin closer to the root system of the plant with a shallower application point than the grower standard treatment.
Guava Root Nematode pressures are rising in sweetpotatoes so we did a similar trial that compared in-row vs broadcast applications at different depths with high/low sampling. Unlike the tobacco trial of 2023 the pests showed up to dinner.
Be sure to subscribe to our blog so you don’t miss the details on the sweetpotato trial and other trials.
If you’d like more in-depth information on our trials and what TriEst can do for your farm be sure to reach out to us. Contact Us Here
You can also view a video from the 2023 Tobacco Field Trial on our YouTube Channel Here.
This project was established in East Central NC originally in 2021 to evaluate the effects of TELONE ™ II and Chloropicrin (PIC) on nematode suppression, Granville wilt suppression, and tobacco yield and quality.
Yield losses from crop “melting” late season have become common in the greater tobacco production regions. This is a complex issue of harvest timing, weather conditions, disease, and nematode pressure. Growers are consolidating and getting larger with same infrastructure, which is putting more pressure on fumigants to protect the crop longer. Companies also want more overripe tobacco, putting more pressure on late season harvests.
In tobacco, maturity windows are critical to management, when everything matures at once and growers struggle to get around the crop and harvest in a timely manner. In 2021, our first tobacco blend study resulted in the grower standard of 200# PIC (#50 BER) being the better treatment overall with more early vigor than treatment blends containing TELONE. The plots with PIC100 showed a 5 to 7 day earlier maturity rate over PIC/TELONE blends, leading us to the question of – is it possible to stagger harvest between the products?
If PIC is maintaining earlier maturity, that needed to be accounted for in harvest planning. We consolidated our 2021 findings into our set of treatments for the 2022 tobacco study with another central North Carolina tobacco grower. Similar to 2021, treatments containing only Chloropicrin (PIC) in the Spring showed the best early vigor, highest lower stalk yields, and overall best plant structure.
Once harvest began, we found that late season nematode pressures resulted in higher wilt levels and caused yield losses. There was not much separation between the Spring PIC100 and PIC60 plots in nematode control (Spring application, cool soil temps, and depth of pest may have played a role). Spring PIC application plots looked best prior to nematode pressure and had the best first and second harvest yields. In instances where Root Knot Nematode isn’t present PIC100 is the most economical solution.
All of the plots where TELONE was Fall applied had a significant impact on season long nematode suppression and resulted in the highest yielding plots overall. While Fall applied TELONE treated the late season nematode problem and protected yields, it didn’t necessarily cause the yield gains. The Spring PIC60 application didn’t solve the late season nematode problem. Knowing nematode levels and location in the field pre-soil fumigation is critical.
Based on these findings TriEst’s intention is to take a deeper look at finding unique application and timing solutions that meet a grower’s needs. We have more trials in the ground now improving on soil fumigation application timing and depths. Our next blog will be on our 2023 trials that focus on sampling depths, the probes, and treatments. In the 3rd blog of this series, we will go over those 2023 trial results.
So stayed tuned and be sure to subscribe so you don’t miss the latest information.
Today, we’re absolutely thrilled to share some news with you. The July issue of the Wisconsin Potato and Vegetable Growers Association’s The Badger Common’Tater features a wonderful, in-depth interview with our own Corporate Agronomist, Josh Mays! This entertaining conversation delves into Josh’s background, why he joined the company, the innovative techniques that TriEst uses, and a detailed conversation about chloropicrin-based products in crop protection.
Don’t Miss the July Crop Protection Issue by the WPVGA The Badger Common’Tater.
If you’re curious to learn more about Josh Mays and the dedicated work happening at TriEst Ag Group, be sure to grab a copy of The Badger Common‘Tater’s July Crop Protection issue. You can find the article on their website here: JULY 2023 ISSUE of the Badger Common’Tater
This interview is a must-read for farmers, industry professionals, and anyone passionate about the future of agriculture.
