Field Trial: Precision Application and Curve Compensation on Sprayers

Several months ago I wrote an article about curve compensation in planters and how these systems can help create more uniform stands and improved yield in fields with curves.

Another area where there is a lot of value with curve compensation is product application. Sprayers are getting larger, often coming equipped with 120- or 132-foot booms, which can cause drastic differences in application rates on the inside and outside edges of a curve. This can result in weed, disease, or nutrient problems as product is overapplied on the inside of the boom and underapplied on the outside.

There are several great systems that have been on the market for a few years with individual nozzle control, such as the CapstanAG system, Raven Hawkeye, and John Deere’s new ExactApply system. The ExactApply system not only features individual nozzle control which enables curve compensation, but also has technology that allows for pulse-width modulation at 30 hertz, a turret featuring six nozzles with automatic A/B nozzle switching, and improved monitoring of nozzles for issues such as flow rates and blockage. This monitoring system is visible on the in-cab display and through lights that are built into the ExactApply nozzle body.

I had the opportunity to work with the ExactApply technology this season and conduct a simple field trial illustrating the value of the new system. I worked with a team of Product Specialists at RDO Equipment Co. to conduct the field trial at a precision agriculture field day they held for customers. We made an oval track with a 180-degree turn on each end to put the curve compensation system to the test.

The field trial consisted of two treatments, curve compensation on and off, and evaluating the effect of a curve on spray coverage across the boom. We expected that, with curve compensation off, product would be overapplied on the inside of the curve and underapplied on the outside. With the system on, the application rate would then be consistent across the whole boom. To measure this, we put water-sensitive paper across the length of the spray pass and then calculated the percent spray coverage on each sheet.

The results showed that the new system works as advertised, and that with curve compensation off there was a statistically significant difference between the inside and outside edges of the boom. With the feature turned on, there was no statistical difference, meaning that the spray rate was maintained across the length of the boom in the curve.

Whether the system used is John Deere’s ExactApply, CapstanAg’s Pinpoint II, Raven Hawkeye, or another option on the market, there are several benefits for a customer. One of the biggest benefits is with the 4Rs of nutrient or product application: applying the right product in the right place, at the right time, and at the right rate. These systems ensure that product is delivered at the correct rate where it’s needed, enabling practices such as variable rate, and shutting off nozzles as you cross headlands and interior and exterior boundaries. This saves on product application costs and could help with issues such as weed, insect, or disease resistance.

To conclude the field trial, we put together a video for customers who could not attend the event. In today’s digital age it’s not only important to work with and show the value of the latest technology, but to use new ways to communicate this information to others.

Watch the field trial video below:

Leave a Reply

Systems Management Stories
Data ManagementBlockchain: Making Data Cleaner, More Secure
January 16, 2018
Probably most professionals who deal with business data have at least heard the term “blockchain” bantered about as potentially the Read More
Soybean-field-clouds-Photo-courtesy-of-Earl-R-Shumaker
Data ManagementBetting on Rain? The Accuracy and Reliability of Precipitation Forecasts
January 16, 2018
For you sports junkies out there, if I could prove to you that I can correctly predict winners and losers Read More
Data ManagementAgGateway Grain Traceability Proof-of-Concept Seeks Industry Participation
January 15, 2018
AgGateway’s Precision Agriculture and Grain & Feed councils have issued a call for participation for a proof-of-concept initiative in AgGateway’s Read More
John-Deere-Cab-GPS
Data ManagementPrecision Ag Hardware and Software: A Little Off-Season Maintenance Goes A Long Way
January 11, 2018
All service technicians have heard this line. Most often when spring makes its anticipated return to our lives. It is Read More
Trending Articles
John-Deere-Cab-GPS
Data ManagementPrecision Ag Hardware and Software: A Little Off-Season Maintenance Goes A Long Way
January 11, 2018
All service technicians have heard this line. Most often when spring makes its anticipated return to our lives. It is Read More
Anez-Consulting-Paul-Anez-and-Michael-Dunn
Service ProvidersAnez Consulting: Focus On Fertility
January 9, 2018
Central Minnesota features variability aplenty when it comes to soil characteristics and topography, from flat, black expanses rich in organic Read More
Agrishow2017
Americas5 Best Ag Tech Shows in Brazil
January 8, 2018
Brazil continues to demonstrate its potential in agriculture. Several international companies are investing in our country because we have a Read More
Farmer and computer
Service ProvidersPrecision Agriculture Writers Wanted To Join Our Team in 2018
December 10, 2017
About The Opportunity: PrecisionAg.com is looking for people to join our team in 2018 and submit original content to our Read More
Harvested-Corn-Field-Clouds
Data ManagementWeather Services Advance Precision Agriculture
December 4, 2017
Some estimates suggest over half of growers’ activities are impacted by weather conditions, from field workability to fertility management to harvest Read More
Wheat-an-oats-Daniel-X-ONeil
Data ManagementWill Open-Source Finally Unlock Ag Technology’s Potential?
November 28, 2017
To Aaron Ault’s eyes, ag technology right now is something like a walled garden — not unlike the Microsoft of Read More
Latest News
Data ManagementBlockchain: Making Data Cleaner, More Secure
January 16, 2018
Probably most professionals who deal with business data have at least heard the term “blockchain” bantered about as potentially the Read More
Soybean-field-clouds-Photo-courtesy-of-Earl-R-Shumaker
Data ManagementBetting on Rain? The Accuracy and Reliability of Precip…
January 16, 2018
For you sports junkies out there, if I could prove to you that I can correctly predict winners and losers Read More
center-pivot-irrigation-drop-sprinklers-on-corn
Precision IrrigationFinding Your Precision Ag Mindset
January 15, 2018
A precision mindset is the most important requirement for successful precision ag technology adoption. One of my first VRI (variable Read More
Drone-and-operator-Photo-courtesy-of-Kray-Technologies
DronesCrop Protection Application by Drone: A Q&A with Kr…
January 15, 2018
January is a busy month for agricultural companies. It’s a month that strong sales can set the mood for the Read More
Data ManagementAgGateway Grain Traceability Proof-of-Concept Seeks Ind…
January 15, 2018
AgGateway’s Precision Agriculture and Grain & Feed councils have issued a call for participation for a proof-of-concept initiative in AgGateway’s Read More
John-Deere-Cab-GPS
Data ManagementPrecision Ag Hardware and Software: A Little Off-Season…
January 11, 2018
All service technicians have heard this line. Most often when spring makes its anticipated return to our lives. It is Read More
Corn-Planter
Grower Services & SolutionsCorn Planter: The Train of Consequences
January 11, 2018
It’s always planter season in our shop but now that harvest is done the corn planter is the next piece Read More
Robotics/Labor SaversSmart Ag Announces Driverless Tractor Automation Platfo…
January 11, 2018
An Iowa technology company has unlocked the tremendous potential for automation in agriculture by developing the first cloud-based platform for Read More
Anez-Consulting-Paul-Anez-and-Michael-Dunn
Service ProvidersAnez Consulting: Focus On Fertility
January 9, 2018
Central Minnesota features variability aplenty when it comes to soil characteristics and topography, from flat, black expanses rich in organic Read More
Agrible
Grower Services & SolutionsAgrible to Launch Retailer Services in 2018
January 9, 2018
It’s a new year, which means new market challenges. Full service retailers are searching for ways to differentiate themselves and Read More
jeremy-speaking
Grower Services & SolutionsGrower and Precision Ag Services: Opportunities Lost
January 9, 2018
I often spend time with growers, talking about their operations, and the processes they go through each season to do Read More
Winters-Farming-farm-manager-Alex-Bergwerff-and-Ranch-Systems-marketing-and-business-development-manager-Hylon-Kaufmann
Precision IrrigationInside California Irrigation: Winters Farming
January 9, 2018
As many of us already know, almonds tend to get a bad rap for their water-use efficiency — or some Read More
Sentera software
DronesSentera Offering Elevation Data Mapping Via AgVault
January 9, 2018
Sentera announces the availability of elevation maps within the Sentera AgVault platform, offering agronomists, crop consultants, and growers additional field Read More
Industry NewsRaven, South Dakota State University Link Up: What You …
January 9, 2018
On Tuesday afternoon Raven and South Dakota State University (SDSU) held a press conference on the SDSU campus in Sioux Read More
Agrishow2017
Americas5 Best Ag Tech Shows in Brazil
January 8, 2018
Brazil continues to demonstrate its potential in agriculture. Several international companies are investing in our country because we have a Read More
Aarav-Unmanned-Systems-team
Asia12 Indian Agritech Startups to Watch Out For in 2018
January 3, 2018
Farming is a profession of hope. And India holds the record for the second-largest agricultural land in the world, with Read More
Amazone-Amaspot
Australia/New ZealandAmazone Set to Release Weed-Detecting Sprayer in Austra…
January 2, 2018
European farm machinery giant Amazone is set to release its UX trailed weed-detecting sprayer in Australia, which it says can Read More
drone-wheat-field
DronesAgricultural Drones: From Detection to Diagnosis
January 2, 2018
There is not a remote sensing platform that is innately better at all things: satellites, manned aircraft, and unmanned aerial Read More