Changing Crop Protection Landscape Demands Drift Advances

Dealers and growers need to be more careful than ever about drift control and spray efficacy.
Dealers and growers need to be more careful than ever about drift control and spray efficacy.

Drift control and spray application efficacy are entering a whole new era. So says Tim Stuenkel, global marketing communications manager at TeeJet Technologies, and many of his colleagues agree. With the new cropping systems coming on line in the next few seasons — utilizing more herbicide-resistant crops, for instance — and widening/rising consumer concerns about the environment, dealers and growers will need to be more careful than ever about off-target product movement.

Fortunately, manufacturers and universities continue to come up with innovations in three key areas: sprayer component design, crop protection chemistries and tank additives.

Pattern Master

The newest technology editors at CropLife® have come across is the Pattern Master brush system from K-B Agritech, LLC, based in Plainfield, WI. The tool is the brainchild of Kurt Kamin, veteran farmer and sport pilot. His design was based on the physics he saw in the aerodynamics of airplane flight — principles that also apply to sprayers in a field.

When the air hits the front of a sprayer boom as it moves, whether there’s a wind in the field or it’s a dead calm day, a high pressure area is created in front of the boom. As that high pressure travels around the boom, it’s moving to an area of low pressure, and the air actually accelerates. “So if you’re going through the field at 12 mph, you could have a 15 to 16 mph wind hitting your spray pattern,” says Kamin. That wind creates a shear factor on the spray pattern.

Kamin’s solution is to put brushes in front of each nozzle to deflect that turbulence, thereby eliminating a significant amount of drift. In fact, by eliminating that shear factor on the spray, the pattern can develop for about a third of its life unobstructed.

“Ecologically it’s friendlier for everybody because you hit your target. Economically it’s going to be extremely friendly because it makes you more efficient,” summarizes Kamin.

More testing will show exactly what percentage of drift is being eliminated, but Kamin is confident about the results.

The Pattern Master is so promising, it’s captured the attention of both Bob Wolf, drift expert/owner of Wolf Consulting & Research, and Monsanto, creator of the Roundup Ready 2 Xtend crop system. The system features soybeans tolerant to both glyphosate and dicamba. Monsanto will be tracking trials scheduled for this summer on soybeans that will quantify the brushes’ spray pattern protection.

A modern, full-size sprayer boom (120-feet, 20-inch spacings) can be equipped with a complete set of the Pattern Master units around $3,950.

More Spray Precision

While the technology of Pulse Width Modulation (PWM) control is not new — Case IH introduced the AIM Command System on its Patriot sprayers several years ago — the concept is gaining more attention recently.

Last summer, Case IH debuted the AIM Command PRO spray system, which offers constant rate and pressure over a wide range of speeds. Nozzles can be turned on and off one at a time, rather than entire boom sections. This “minimizes skips, overspray and overlaps, preventing over-application and the resulting crop damage,” says Mark Burns, Case IH application equipment marketing manager.

Wolf says the PWM technology has always been a useful tool, but in his training workshops, he’s discovered it’s getting more and more popular with users. In fact, he promotes the system at his meetings, demonstrates it and assures applicators the tool is a good investment.

TeeJet Technologies has been looking at PWM for many years, but recently decided to “pull the trigger on it because the timing is right,” says Stuenkel. “The market is accepting of it, for the cost and benefits.”

TeeJet’s product, the DynaJet Flex 7120 PWM Sprayer Control will be available later this year.

With the system, TeeJet’s solenoid bodies are mounted on every boom salvo body. The solenoids have actually been on the market for several years for individual tip shut-off or section shut-off, so it’s a proven solenoid package, says Stuenkel.

“In conjunction with the DynaJet Flex controller, we can pulse the solenoids 10 times per second,” he explains. “By adjusting the duty-cycle on the solenoids, we can maintain a fixed pressure in the boom, as field speed increases or decreases — rather than increasing or decreasing the flow pressure to get the flow rate.”

Stuenkel says drivers can be more productive, putting down a full, appropriate rate even when they are slowing down to 4 mph at the end of rows or going 18 mph in the middle of the field. Applicators can also select a specific droplet size and maintain that throughout application.

With new weed control systems, “there’s going to be a lot more droplet size spray management needed, so you don’t have 2,4-D drifting on your neighbor’s crops that may not be 2,4-D ready,” Stuenkel points out. The industry needs a technology that can do this effectively and efficiently, so someone doesn’t have to get out of the cab all the time and adjust tips, he says.

The DynaJet Flex system is designed to piggyback on to existing rate control systems. Its compact, touchscreen display, mounted in the cab, allows for easy set-up and operation.

Challenges Of The New Systems

The dicamba- and 2,4-D-tolerant cropping systems may be in demand by growers, but it’s going to take a whole lot of education in application techniques — including droplet issues and particle drift — to make them effective.

“Labels are going to start specifying the spray quality or droplet size, in particular telling users to put on a coarse or very coarse drop, and they have to learn how to do that,” says Wolf.

Chemical manufacturers have worked extensively to engineer some of the products for less volatility, plus their experts know exactly how to get the size of droplet that will 1) kill the weed and 2) minimize drift, he notes.

“I think they’re going to err on the side of safety and probably call for a little bigger droplet than they might need because they don’t want drift,” says Wolf. He is concerned that if drift control is the industry’s number one goal, applicators will lose sight of the other very important goal in application: Killing the weed with the best coverage.

Some of the new nozzles are designed to reduce drift already, and if applicators lower sprayer pressure they may reduce drift even more — but coverage is also reduced. Over the past few years, Wolf believes this lack of coverage has played a part in some resistance problems.

“We’re trying to get some of the applicators using this new nozzle technology to spray at higher pressures. But that kind of goes against the educational philosophy for years and years and years that low pressure means less drift,” he says.

Recordkeeping for new weed strategies will also become even more crucial, as growers try to avoid hitting fields of non-tolerant crops with inappropriate chemistries or inadvertently allowing drift to reach susceptible crops. Wolf points out that as the industry introduces dicamba, 2,4-D, HPPD, ALS and sulfonylurea “ready” technologies, “how many programs and systems are we going to have to work around? It’s going to be recordkeeping headache for one thing, and it will mean a lot more different tank mixes.”

Speaking of tank mixes, Brian Kuehl, product development manager, West Central Inc., Willmar, MN, represents another drift technology segment evaluating the new weed control technologies: additives. The company is a wholesale distributer of crop inputs, including nearly a dozen adjuvants. With additives, “you not only have to be aware of droplet size, but you also have to be aware of the impact you’re having on the chemistry from a vapor or volatility standpoint,” he says. “West Central is working very hard with the manufacturers of these new weed technologies to make sure we have the right additives.”

Chris Reeves, Kuehl’s colleague at West Central, says tank products will continue to evolve and improve. How they work with application equipment, nozzles and pesticides are an “untold story.” He notes that some products look great in lab conditions, but become a problem when used in a commercial setting. They may encourage quick breakdown due to pump shear, be difficult to handle in some environmental conditions, not mix with fertilizers or need to be used at rates that are inefficient for the applicator.

One company that is carefully watching how the new weed control systems play out is The Andersons Inc., Maumee, OH. In 2012, CropLife reported that the firm had developed a breakthrough application technology: herbicides applied via water activated granules. “We’re trying to solve for drift,” says Chuck Anderson, director of professional products for the company’s turf and specialty group. The concept has been well-proven for efficacy, but finding commercial partners has been a challenge. “The granules have to be applied pneumatically because they’re so small,” he explains. The Valmar-type or airflow-type technology is out there, but it’s not in widespread use.

In fact, granules containing gly-phosate, dicamba and 2,4-D have been developed.

Anderson hopes the new weed systems are successful, but if there are some regions where more conventional spray technology won’t work, he’s hoping industry stakeholders will take a second look at granules, “which are on very few people’s radar.” In California, for instance, so many crops are in close proximity, applicators may need the added precision that granules can deliver, he says.

Pages: 1 2

Topics:

Leave a Reply

One comment on “Changing Crop Protection Landscape Demands Drift Advances

  1. Thanks for the mention of the DriftWatch Specialty Crop Site Registry and the non-profit company that now runs it, FieldWatch. We can provide updated information regarding its purpose, its new redesign, numbers of registered growers, beekeepers and applicators, and the expansion into 12 states and Canada. Please visit our website and contact me for more information. Thanks much.

    Reid

Nozzles Stories

D Series TurboDrop Nozzles | Greenleaf Technologies
Nozzles17 Spray Nozzles For 2015
May 7, 2015
Reduction in drift. Extremely coarse droplets. Uniform coverage. Ideal for pre- and post-application. These are just some of the words Read More
Nozzles18 Spray Nozzles That Reduce Drift, Optimize Coverage
May 7, 2014
This year’s line-up of tips feature the versatility to handle any spray job. View photos and product descriptions of the latest nozzles on the market in our slideshow. Read More
Screen captures of Greenleaf Technologies’s mobile application app for agriculture on iPhone showing the home screen and an example result from their Nozzle Calculator called ‘NozzleCalc
NozzlesGreenleaf Launches Free NozzleCalc App
January 16, 2014
Quickly calculate sprayer settings for TurboDrop and AirMix nozzles anywhere with the new Greenleaf Technologies Nozzle Calculator app. Read More
Case Patriot Sprayer closeup
EquipmentPrecision Spray Technology: How Modulation Spray Systems Improve Application
December 2, 2013
CropLife Media Group’s recent Webinar explored ways that applicators can improve spray efficacy. Read More
Top 100 Articles
Crop InputsLand ‘O Lakes, United Suppliers Finalize Merger
August 24, 2015
According to a press release on August 24, owners of United Suppliers, Inc. and members of Land O’Lakes, Inc. “have Read More
West Central Cooperative, Jefferson, IA
CropLife 100Iowa Cooperatives To Explore Unification
August 19, 2015
The boards of directors at two of Iowa’s leading farmer-owned cooperatives yesterday signed a letter of intent to study the Read More
CropLife 100Southern States Coop Hosting Drone Flight This Friday
August 3, 2015
Southern States Cooperative — No. 9 on the CropLife 100 — is hosting an FAA-approved drone demonstration at Grandview Farms Read More
CropLife 100Aligned Ag Distributors Adds Four New Owners
July 30, 2015
Aligned Ag Distributors LLC has announced the addition of four new customer/owners to Franklin Holding Co. LLC. They are: The Read More
CropLife 100Pinnacle Purchases California-Based Specialty Crops Retailer
July 20, 2015
Pinnacle Agriculture Holdings has successfully acquired California-based NH3 Service Co.  Operating as part of Pinnacle’s Performance Agriculture brand, the new locations Read More
Asmus Farm Supply liquid fertilizer facility features 20,000 square feet
CropLife 100Slideshow: Asmus Farm Supply Shows Off Its New Liquid Fertilizer Facility
July 15, 2015
Asmus Farm Supply, Rake, IA, recently added a new liquid fertilizer facility to its company operations. The new liquid fertilizer Read More
Latest News
Melissa Olds Dow AgroSciences
Crop InputsDow AgroSciences: Highlighting The Past, Present & …
September 2, 2015
In general, media events held by large agricultural suppliers tend to focus primarily on what plans the company has in Read More
Mobile tablet
OpinionTaking Data Head On
September 2, 2015
As you read this column, I’m hoping that if you picked up the phone and gave me a call, you’d Read More
Young soybean field
Industry NewsArysta LifeScience Announces New Business Unit Head For…
September 1, 2015
Arysta LifeScience North America announces the addition of Rico Christensen, Business Unit Head, North America. Christensen will have responsibility for Read More
Wilbur Ellis Pink Soybean Seed Treatment
Crop InputsWilbur-Ellis Goes Pink With Soybean Seed Treatments For…
September 1, 2015
This past year, proceeds of pink-dyed soybeans treated and sold to Wilbur-Ellis seed customers in Chester, SD, went to two Read More
SprayersNORAC Active Wing Roll Slated For More Sprayers
September 1, 2015
NORAC Systems, a member of the Topcon Positioning Group, announces the release of Active Wing Roll for RoGator, Apache, New Read More
Syngenta Sign
FungicidesSyngenta’s Newest Fungicide Receives EPA Approval
September 1, 2015
Syngenta announced today that its newest succinate dehydrogenase inhibitor (SDHI) fungicide – Solatenol – has received registration from EPA and Read More
Flooded corn in Indiana
Crop InputsDelaying The Fertilizer Decision
September 1, 2015
Comments gathered from several retailers recently evidenced a classic good-news-bad-news scenario. Good news is prices and supplies of nitrogen, phosphate, Read More
StewardshipBee Buffer Strip Initiative Seeks 100 Ohio Farmers
August 31, 2015
The U.S. Bee Buffer Project, an initiative of the Pollinator Partnership (P2), Burt’s Bees and The Burt’s Bees Greater Good Read More
2015 ShowStopper Award, MAGIE
EquipmentA ShowStopper From Case IH: The Patriot 2250
August 31, 2015
For nine years now, visitors to the yearly Midwest AG Industries Exposition (MAGIE) show have been tasked with not only Read More
Crop InputsMonsanto, FMC Expand Roundup Ready PLUS Platform
August 31, 2015
FMC Corp. and Monsanto Co. announced today an expanded agreement to continue their participation in the Roundup Ready PLUS Crop Read More
Deere Nutrient Applicator
Eric SfiligojThe Good & Bad News From MAGIE
August 31, 2015
As I write this column, I’ve just returned from the annual Midwest AG Industries (MAGIE) trade show in Bloomington, IL. Read More
CPS Morenci receiving its 4R certification
StewardshipCPS Morenci Becomes First Michigan Facility Certified I…
August 31, 2015
The 4R Nutrient Stewardship Certification Program has announced that Crop Production Services, Inc.’s facility located in Morenci, MI, has been Read More
EquipmentDeere Announces Soucy Track Distribution Alliance
August 28, 2015
John Deere announces an alliance with Soucy Track to sell and distribute products through the John Deere dealer channel. “This Read More
FertilizerFall-Applied Phosphorus: A Rooted Investment
August 28, 2015
As commodity prices decrease and input prices continue to rise, farmers are seeking more efficient strategies for meeting a high Read More
Monsanto Sign
Crop InputsWhat’s Next For Monsanto, Syngenta?
August 28, 2015
After dropping its $47 billion bid to take over Swiss agribusiness firm Syngenta, Monsanto may be turning its focus to Read More
Golden Harvest Corn stalks
Crop InputsMonsanto: Syngenta Not The Only Horse In Crop Protectio…
August 28, 2015
Monsanto Co, having ditched an audacious $46 billion (£30 billion) offer for Syngenta AG, may downshift to a humbler strategy Read More
ManagementConsolidation hits and a miss; And a look at China’s ch…
August 28, 2015
As Monsanto suspends its pursuit of Syngenta, consolidation news at the retail and distribution level heats up. CropLife magazine’s Executive Read More
Corn Field
MicronutrientsHuma Gro Introduces New Boron Liquid Nutrient Formulati…
August 28, 2015
BORO-MAX, a new boron (B) 10% liquid nutrient formulation, has been added to the Huma Gro product line. This new Read More