Frequent, Proper Sprayer Calibration Saves Money, Pesticides

Spring is a good time for corn and soybean growers to calibrate sprayers to avoid wasting money and applying the wrong amount of pesticides, says an Ohio State University agricultural engineer.

Approximately 66-77% of all growers who spray pesticides spray too much or too little, which not only can waste money, but also cause crop losses, said Erdal Ozkan.

He said growers need to inspect sprayers for proper gallons-per-acre application rates, and calibrate them early and often.

“If you don’t calibrate your sprayer frequently, it’s as if you were driving your car with a speedometer that doesn’t work,” said Ozkan, who also is a professor in the Department of Food, Agricultural and Biological Engineering and a researcher with the Ohio Agricultural Research and Development Center. “You assume you know what speed you are traveling at from habit, but you are not really sure. The problem with a sprayer is that nozzles wear out with use, application rates change with different field conditions, and traveling speeds also change. Many growers don’t take these factors into account.”

Data from Ohio and other states indicates that only one out of every three or four applicators applies chemicals at rates that are within five percent(plus or minus) of the intended rates. Application rates within plus or minus five percent represent the accuracy level recommended by the USDA and the U.S. EPA.

Surveys also indicate that 67% of applicators who calibrated their equipment before every spray application had application errors below five percent, Ozkan said. Conversely, only five percent of applicators who calibrated their equipment less than once a year achieved the same degree of accuracy.

Ozkan said growers should calibrate their sprayers in early spring and every time operating conditions (different ground surfaces, for example) change or a different type of chemical is to be used.

“Frequent calibration is even more important with liquid applications because nozzles wear out with use, increasing the flow rate and leading to overuse of chemicals, which impacts growers’ budgets and can lead to crop damage and contamination of groundwater and the environment,” Ozkan explained.

Calibrating a boom sprayer, he said, usually doesn’t take more than 30 minutes, and only requires three tools: a watch showing seconds, a tape measure and a jar that measures ounces. The ultimate goal is to calculate the actual rate of application in gallons per acre to check for accuracy and make adjustments as needed.

Learn how to make these adjustments and find additional information about sprayer calibration here.

Leave a Reply

Sprayers Stories
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
Sprayers14 Self-Propelled Sprayers For 2014
January 16, 2014
Ag retailers looking for new self-propelled sprayers will have these models to choose from this year. Read More
Case IH 2240 Patriot Sprayer
SprayersNew Patriot Sprayer Wins 2013 CropLife IRON Product Of The Year
January 13, 2014
Case IH’s new Patriot 2240 self-propelled sprayer has been named one of the winners of the 2013 CropLife IRON Product of the Year trophy. Read More
EquipmentHagie Launching Redesigned STS Sprayers In 2014
December 11, 2013
The new 2014 STS self-propelled sprayer product line features a new drive system, cab design, engine and solution system for optimal operator efficiency, safety and performance. Read More
Top 100 Articles
CropLife 100The Andersons Acquires South Dakota Plant Nutrient Manufacturer Kay-Flo
May 20, 2015
The Andersons, Inc., ranked No. 22 on the CropLife 100, has purchased Kay Flo Industries of North Sioux City, SD. “This Read More
CropLife 100North Central Farmers Elevator, Wheat Growers Unification Approved By Board, Still Awaits Member Approval
May 13, 2015
The Boards of Directors for North Central Farmers Elevator (NCFE) and Wheat Growers (WG) have voted to approve the Unification Read More
CropLife 100AgGateway’s Barcoding Initiative Progressing Nicely
May 8, 2015
According to legend (or Wikipedia), the first step towards modern bar codes came back in 1948, when Bernard Silver, a Read More
CropLife 100Pinnacle Agriculture Acquires Minnesota Retailer
April 14, 2015
Pinnacle Agriculture Holdings, LLC, ranked No. 6 on the CropLife 100,  has successfully acquired Liebl Ag, LLC in Ada, MN.  Read More
CropLife 100CHS, Aurora Cooperative Complete Fertilizer Storage, Grain Shuttle Loading Facility
April 13, 2015
CHS Inc., the nation’s leading cooperative and ranked No. 5 on the CropLife 100, and Aurora Cooperative (ranked No. 21) Read More
CropLife 100GROWMARK Acquires Missouri Refined Fuels Terminal
April 2, 2015
Bloomington, IL-based GROWMARK and Magellan Pipeline Co. have entered into an agreement in which GROWMARK will acquire the refined fuels Read More
Latest News
Bayer CropScience, ILeVO
Crop InputsISU: ‘Halo Effect’ From ILeVO Soybean Seed …
May 28, 2015
Farmers who were lucky enough to plant soybeans and spray pre-emergence herbicides in between rain events may now be seeing Read More
ManagementCorn Planting/Monsanto-Syngenta Update; New PrecisionAg…
May 28, 2015
Eric Sfiligoj and Paul Schrimpf give updates on corn planting progress, the latest on Monsanto-Syngenta rumors and preview a brand Read More
Waterhemp in soybean stubble
HerbicidesEPA Signs Off On Monsanto’s Warrant Ultra Premix
May 27, 2015
Soybean and cotton growers looking for new tools to manage weeds will have a new, first-of-its-kind option in 2016 with Read More
Palmer pigweed seedhead in cotton
HerbicidesSTUDY: Weed Diversity Primarily Influenced By Geography
May 27, 2015
The potential long-term impacts of glyphosate-resistant crops on biodiversity of the agricultural landscape have been the subject of controversy. A Read More
Seed/BiotechAgrilead Forms Distribution Alliance With Kansas-Based …
May 27, 2015
Agrilead, Inc. announces the formation of a strategic alliance with KALO, Inc. of Overland Park, KS. Through the alliance, KALO Read More
EquipmentPrecision Tank Announces A&B Welding Acquisition
May 27, 2015
Precision Tank, a specialized tank and equipment manufacturer, announced today the acquisition of A&B Welding of Thompson, IA, a manufacturer Read More
Allied Cooperative Grain Plant
ManagementTraining Program Gives First Responders Skills For Grai…
May 27, 2015
When stored grain forms hard bridges, columns and other irregularities, those working to correct it find themselves at risk of Read More
Industry NewsBASF Sponsors Space Farming Research Project
May 26, 2015
Is it possible to produce large quantities of high quality vegetables on a space station, about 320 kilometers away from Read More
FertilizerTexas Ammonium Nitrate Bill Passes Senate, Heads To Gov…
May 26, 2015
The Texas State Senate gave final approval last Thursday to new regulations for ammonium nitrate, reports The Dallas Morning News Read More
Young corn plants
Industry NewsArysta Europe Details New Organizational Structure
May 26, 2015
Arysta LifeScience Europe recently announced a new organizational structure to leverage its scale and accelerate the company’s growth in this Read More
Syngenta Sign
Eric SfiligojMonsanto-Syngenta Could Hinge On A Judgment Of Solomon …
May 26, 2015
In the bible, the reputation of King Solomon’s wisdom in matters of despite comes from a tale of one child Read More
ManagementA New Sprayer Company & UAV Research In The Spotlig…
May 21, 2015
CropLife’s Paul Schrimpf and Eric Sfiligoj talk about a Dutch sprayer manufacturer entering the U.S. with a super-sized entry and Read More
HerbicidesFirst U.S. Sale Of Enlist Duo Herbicide Made By Dow Agr…
May 21, 2015
Dow AgroSciences has recorded the first U.S. sale of Enlist Duo herbicide with Colex-D Technology. This marks the first commercial Read More
CropLife 100The Andersons Acquires South Dakota Plant Nutrient Manu…
May 20, 2015
The Andersons, Inc., ranked No. 22 on the CropLife 100, has purchased Kay Flo Industries of North Sioux City, SD. “This Read More
EquipmentNORAC Options Coming To TerraGator
May 19, 2015
Utilizing NORAC’s Standard Control technology, boom height control is now available for TerraGators with Airmax Precision 2 and Benson Booms. This Read More
Crop InputsHelena Introduces New Soil Health Product
May 19, 2015
Helena Chemical Co. is helping agricultural producers maximize yields and efficiency with the introduction of Liquid Chisel, a new product Read More
Stewardship4R Nutrient Management Planning Certification Now Avail…
May 19, 2015
The American Society of Agronomy (ASA) and the International Certified Crop Adviser (ICCA) program announce a new specialty certification in Read More
Environmental Defense Fund logo
Paul SchrimpfEnvironmental Defense Fund: Appreciating Partners
May 19, 2015
I WAS deep in the throes of preparation for the Commodity Classic meeting that took place this past February, trying Read More