Precision Spray Technology: How Modulation Spray Systems Improve Application

Case Patriot Sprayer closeup
CropLife Media Group’s recent Webinar “How Pulse Width Modulation Spray Systems Improve Accuracy and Quality of Chemical Application” is available on demand.

Achieving consistent coverage across a field can be challenging with conventional spray technology. Certain field conditions can lead to over-application, causing potential crop damage as well as wasting product.

That was the topic of CropLife Media Group’s recent Webinar, “Precision Spray Technology: How Pulse Width Modulation Spray Systems Improve Accuracy and Quality of Chemical Application.” The hour-long presentation was highlighted by insight from experts at Capstan Ag Systems, Case IH and Wilger Inc., on how Pulse Width Modulation (PWM) spray systems can improve an applicator’s bottom line by addressing the overall quality of application and drift management issues.

Evolution Of Spray Technology

Case IH Application Equipment Marketing Manager Mark Burns described the evolution of spraying from simply managing application with speed and pressure, to using rate controllers, to today’s PWM systems, which “address the constraints found in conventional application practices.”

According to Burns, the PWM system works via a solenoid valve in each nozzle body that opens and closes at a variable rate (pulses) depending on a variety of factors such as variable field speeds and differing product rates.

“With the pulse width modulation technology we have individual control of application rate and pressure,” said Burns. “So you’re holding a constant pressure as you speed up and slow down across the varying terrain of the field, all while knowing you are getting good, consistent coverage. Secondly, we’re able to provide selective drift control.”

Next Level Spraying

Gordon Hooper, field engineer at Capstan Ag Systems, discussed Capstan’s evolving individual nozzle control capabilities during the Webinar. The company currently offers solutions that allow for individual nozzle swath control, turn compensation and programmable “soft” boom sections, and features nozzle valve diagnostic tools such as a key-fob control for nozzle calibration and tip status checks.

“Individual nozzle control, the ability to turn each individual tip on and off as needed to eliminate over application, was the first step,” said Hooper. “Individual nozzle swath control capabilities were the next step; that’s what a lot of applicators have wanted for a long time.

“With individual nozzle swath control each tip turns on and off individually, based on the GPS coverage map that we make internal to our controller,” he continued. “We intentionally make this so that it works in conjunction with the rate controllers; with this system we are reducing the over-application of chemical.”

Turn compensation was the next piece of the puzzle within PWM application, according to Hooper. “If you watch a 120-foot spray boom, or even shorter ones, and you’ll notice compensation as the operator goes around a corner or around the border of a field,” he said. “You’ll see each nozzle is running at a different duty cycle and each nozzle is able to individually adjust to the turn.”

Capstan also has the ability to set up four “soft boom” presets, on the go, in the event of an over- or under-application scenario, such as what can typically occur with nozzles directly behind the sprayer’s wheel tracks or with fence row nozzles.

Just The Spray Tip

Wilger’s Craig Bartel began his presentation with a warning: “Whether you choose to spray conventionally or purchase every piece of technology on the market, your application is only as good as … the spray tip.”

According to Bartel, there are several factors to consider when choosing a tip, and he presented several of the “basics of tip selection” with attendees. “Step one is picking the size of the tip for the speed range you desire,” he said. “And step two is to pick the tip that provides the best droplet size range spectrum for application.”

Bartel also advised on selecting a tip for a standard (non-PWM) spray system, noting that “setting ones’ operating pressure near the middle of the nozzle’s range will give a better pattern and allow for pressure adjustments based on speed variations” and using an auto-rate controller “can increase or decrease the rate of product to compensate for changes in speed.”

Wilger’s Website features the Tip Wizard Computerized Spray Tip Finder, a tool applicators can use to get customized nozzle recommendations.

View The Webinar On Demand >>

Topics:

Leave a Reply

Equipment Stories

A finished Willmar 16-ton side-shooting tender.
TendersNew Production Facility Helps Willmar
July 17, 2014
In 1963, a group of businessmen started Willmar. Today, a half-century later, the company is one of the ag industry’s longest-running brands. Read More
SprayersHooded Sprayers Help Minimize Spray Drift
May 15, 2014
Willmar Fabrica­tion's hooded sprayers have the potential to minimize pesticide drift, especially when combined with other drift reduction technologies, such as drift retardant adjuvants or low-drift nozzles. 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
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

Trending Articles

EquipmentSummer Show Preview 2014: Superior Sprayers Take The Field
July 3, 2014
In this final installment of our coverage of the major categories of Big IRON that retailers can expect to test-drive at this summer’s events, here is a look at 19 sprayers. Read More
Scouting a soybean patch at Green Valley Ag.
EmployeesCropLife Compensation Survey: Battling Talent Drain
July 2, 2014
Retailers too often lose employees to companies outside of agriculture, while recruiting efforts are most often limited to competitors and other ag-focused organizations. Read More
HerbicidesDow AgroSciences Introduces SureStart II Herbicide
June 16, 2014
The enhanced formulation has improved viscosity and increased stability under heat and controls more than 60 high-anxiety grasses and broadleaf weeds found in corn fields. Read More
HerbicidesBASF Investing $270 Million To Expand U.S. Herbicide Production
June 11, 2014
BASF has invested more than $270 million to expand herbicide production capacities in the U.S., including more than 20 new products to be launched over next two years. Read More
EquipmentGPS: 25 Years And Still Growing
June 2, 2014
The evolution of global positioning systems applications in agriculture remains ongoing as the technology hits a notable milestone. Read More
CropLife 10013 Key Acquisitions Pinnacle Has Made In The First Half Of 2014
May 29, 2014
The only thing that has reached a more frenzied pace than #plant14 might be the multiple acquisitions that Pinnacle Agriculture Holdings has made in the first half of the year. Read More

Latest News

Soybean Field
InsecticidesTranform WG, Closer SC Insecticides Receive R&D 100…
July 23, 2014
Dow AgroSciences has received the award from R&D Magazine for Transform WG insecticide and Closer SC insecticide with Isoclast active. Read More
EquipmentKinze, Raven Team Up On 4900 Planter Monitor
July 23, 2014
Kinze Manufacturing announces a partnership with Raven Industries to develop a standalone monitor solution for the Kinze 4900 series planter. With this new Read More
LegislationNew Farm Bill Continues To Confuse As Growers Await USD…
July 23, 2014
The new five-year Farm Bill eliminates many of the direct payments previously payed to growers and could benefit from USDA clarification, reports a Toledo Blade columnist. Read More
EquipmentPrecisionAg.com Relaunches With Responsive Design For M…
July 22, 2014
PrecisionAg, the worldwide leader in precision agriculture information and analysis, announces the launch of its completely redesigned website, PrecisionAg.com. Read More
FungicidesEPA OKs Two Willowood Fungicides
July 21, 2014
The EPA has approved Willowood Azoxy 2SC and Willowood AzoxyProp Xtra. two widely used broad spectrum, preventative fungicides with systemic and curative properties. Read More
Precision AgFarmers Learning Fast As UAVs Take Off
July 17, 2014
Farmers and others interested in how UAVs can be used in agricultural applications were able to learn more about the technology during the recent Precision Aerial Ag Show. Read More
CropLife 100Bobby Knight, Richard Petty To Highlight Ag PhD Field D…
July 17, 2014
Attendees at the July 24 Ag PhD Field Day at Hefty Farms will learn about the latest agricultural technologies, and get a chance to meet legendary sports figures Bobby Knight and Richard Petty. Read More
WebinarsUpcoming Webinars
July 17, 2014
Register for one of our upcoming Webinars or access our archive of past Webinars to view recordings of presentations that may be of interest to you. Read More
A finished Willmar 16-ton side-shooting tender.
TendersNew Production Facility Helps Willmar
July 17, 2014
In 1963, a group of businessmen started Willmar. Today, a half-century later, the company is one of the ag industry’s longest-running brands. Read More
FertilizerCF Industries Sells Carbon Credits To Chevrolet, Donate…
July 17, 2014
CF Industries has completed the sale of a large block of carbon reduction credits to Chevrolet, and will donate the net proceeds of $600,000 to the National FFA Foundation. Read More
CropLife 100Grainland Cooperative, Minier Cooperative Grain To Merg…
July 17, 2014
The shareholders of Grainland Cooperative and Minier Cooperative Grain Co. approved a merger of company operations effective August 1, 2014. Read More
ManagementStudy: Drought Costing California Billions
July 17, 2014
A new study has found the drought has cost the state $2.2 billion, primarily in lost farm revenue and wages. Read More
FertilizerCF Industries Resumes Production At Oklahoma Nitrogen C…
July 17, 2014
The company had shut down production at the Woodward, OK, facility in April to address an issue in one of the site’s boilers. Read More
CropLife 100Wilbur-Ellis To Relocate Agribusiness Division To Denve…
July 16, 2014
The move Eastward will allow Wilbur-Ellis’ Agribusiness Division to be more accessible to relevant geographies and is expected to enhance communication and collaboration among the division’s nearly 3,000 employees. Read More
Soybean field
FungicidesValent Launches New Seed Protection Fungicide For Soybe…
July 16, 2014
The INTEGO SUITE System contains the first new, novel seed protection fungicide chemistry registered in 30 years by the EPA for protection against Pythium and Phytophthora. Read More
Crop InputsSyngenta Drive To Thrive 10 Finalists Announced
July 15, 2014
Finalists are chosen based on the quality of their essays and photos depicting what makes them thrive. Read More
FertilizerHow To Minimize Phosphorus Losses In Runoff
July 15, 2014
Phosphorus losses from agricultural fields can be divided into three categories: flash losses of soluble phosphorus, slow leak losses and erosion events. Here's how to minimize losses in each instance. Read More
ManagementCalifornia Drought Threatens To Dry Up Farm Wells
July 15, 2014
Farmers hit hardest by California's drought could begin to see wells run dry next year, according to a new study by The Center for Watershed Sciences at the University of California, Davis. Read More