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
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
NozzlesChanging Crop Protection Landscape Demands Drift Advances
May 1, 2014
New weed control systems and growing public pressure mean technologies to minimize drift can’t come fast enough. 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
NozzlesTeeJet Technologies Launches New Droplet Size Monitor, Guidance System
July 24, 2013
TeeJet has unveiled two new products: the Sentry 6120 Droplet Size Monitor, which helps operators improve spray applications, and the Matrix Pro GS guidance system with enhanced swath control. Read More
Top 100 Articles
Growmark Group
CropLife 100GROWMARK In 2015: Back, To The Future
March 2, 2015
The nation’s third largest ag retail organization is simultaneously moving forward while remembering its past. Read More
CropLife 100Pinnacle Expands Sanders Brand In The South
February 27, 2015
Pinnacle has acquired Hopkins Seed and Chemical in Qulin, MO, which expands the company's Sanders brand to nine Southern states. Read More
CropLife 100Pinnacle Launches New Providence Agriculture Location In Indiana
February 27, 2015
Pinnacle Agriculture Holdings — ranked No. 6 on the CropLife 100 — has established a new retail location in New Castle, IN, which will operate as part of Pinnacle's Providence Agriculture brand. Read More
CropLife 100Cooperative CHS Returns $518 Million To Owners
February 23, 2015
The 2015 cash return to owners is based on CHS net income of $1.1 billion, the company's second highest on record. Read More
corn field
CropLife 100The Andersons’ Humic DG Now Available In Canada
February 13, 2015
The Andersons, Inc. Turf & Specialty Group has announced its Humic DG product is now available to customers in the Canadian turf, agriculture and horticulture markets. Read More
Farmer on tablet
CropLife 100Southern States Co-op: An Inside Look At Our Aerial Imagery Program
February 8, 2015
Now is as good a time as any to explore the basics of what a retail aerial imagery program looks like today. Read More
Latest News
Eric SfiligojCommodity Classic 2015: Playing The Waiting Game
March 2, 2015
There was plenty of future-talk at this year’s event as companies (and growers) are largely in a holding pattern of sorts. Read More
Industry NewsHighway Equipment Appoints New Director Of Business Dev…
March 2, 2015
Cory Venable, who joined Highway Equipment Company (HECO) in 2013 as OEM Account Manager, has been promoted to Director of Business Development. Read More
Prairieland FS employees
Eric SfiligojWorkforce Worries
March 2, 2015
Finding good employees almost always ranks as the No. 1 or No. 2 problem for ag retailers in our annual CropLife 100 survey. Read More
Growmark Group
CropLife 100GROWMARK In 2015: Back, To The Future
March 2, 2015
The nation’s third largest ag retail organization is simultaneously moving forward while remembering its past. Read More
CropLife 100Pinnacle Expands Sanders Brand In The South
February 27, 2015
Pinnacle has acquired Hopkins Seed and Chemical in Qulin, MO, which expands the company's Sanders brand to nine Southern states. Read More
CropLife 100Pinnacle Launches New Providence Agriculture Location I…
February 27, 2015
Pinnacle Agriculture Holdings — ranked No. 6 on the CropLife 100 — has established a new retail location in New Castle, IN, which will operate as part of Pinnacle's Providence Agriculture brand. Read More
2,4-D Celebrates 70 Years; GROWMARK Uses Super Bowl Ad To Share Positive Message
Management2,4-D Celebrates 70 Years; GROWMARK Uses Super Bowl Ad …
February 27, 2015
Jim Gray, executive director of the 2,4-D Research Task Force, lays out planned activities to mark the chemistry’s 70th anniversary. Read More
HerbicidesUniversity Of Arkansas Flag The Technology Program Adds…
February 27, 2015
Started in 2010, the Flag the Technology program provides a visual reference for applicators to distinguish between fields planted with different herbicide-tolerant trait technologies. Read More
Luckey Farmers, Inc.’s Berkey Farm Center
Industry NewsLuckey Farmers’ Berkey Branch Certified In 4R Nut…
February 26, 2015
The 4R Nutrient Stewardship Certification Program has announced Luckey Farmers Inc.’s Berkey Farm Center in northwest Ohio has been added to its growing list of nutrient service providers to achieve certified status. Read More
Crop InputsWinField Unveiling NutriVision Technology, Ascend Dry F…
February 24, 2015
New for 2015 are NutriVision Technology, a unique tool for monitoring in-season plant nutrient availability, and Ascend WSG plant growth regulator, a new dry formulation of Ascend plant growth regulator. Read More
FertilizerNew Formulation Of NutriSphere-N Protects High Volume U…
February 24, 2015
Verdesian Life Sciences is launching NutriSphere-N HVTM, a new polymer formulation of the proven NutriSphere-N Nitrogen Fertilizer Manager that protects high-volume applications of UAN. Read More
EquipmentIowa Ag Secretary Northey Names Hagie Water Quality Lea…
February 24, 2015
Iowa Secretary of Agriculture Bill Northey has named Hagie Mfg. as a recipient of the Secretary’s Water Quality Initiative (WQI) Leader Award. Read More
FungicidesEvito Fungicide Gives Canadian Wheat Growers New Diseas…
February 24, 2015
EVITO fungicide from Arysta LifeScience North America gives Canadian wheat and barley growers a new option for disease control. Read More
Eric SfiligojThe Commodity Classic Turns 20
February 23, 2015
Two decades in, this annual gathering of all things agriculture has become a must-see event. Read More
CropLife 100Cooperative CHS Returns $518 Million To Owners
February 23, 2015
The 2015 cash return to owners is based on CHS net income of $1.1 billion, the company's second highest on record. Read More
CropLife Retail Week: On The Road Edition
ManagementCropLife Retail Week: On The Road Edition
February 20, 2015
Editors Paul Schrimpf and Eric Sfiligoj discuss their recent trips to the National Farm Machinery Show in Louisville and the Read More
Crop InputsLand O’Lakes Acquires FLM+ Assets
February 19, 2015
FLM+ will become a wholly owned subsidiary of Land O'Lakes, Inc., and the company will retain its employee base after closing of the deal, which is scheduled for the second quarter of the year. Read More
Seed/BiotechUnited Suppliers, Stine Seed Form Marketing Alliance
February 19, 2015
The new alliance will greatly expand sales opportunities for Stine Seed with the United Supplier Seed Link Owners. Read More