Accurate speedometer for spraying..........

bird dogger

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Kubota B2650 and lots of other equipment
Feb 24, 2019
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And it’s FREE, so I thought I would share this for anyone interested.

We’ve raised around 3 acres of sweet corn for far too many years. My new B2650 has no speedometer and I needed an accurate method to calculate the right spray application for some herbicides. Since corn is a member of the grass family, getting rid of the grass weeds in sweet corn is a little tricky. Plus, you’d swear some of those chemicals had powdered gold in them judging by their cost. One sure doesn’t want to waste it and too much applied can also damage the corn crop itself.

I found this Speedometer App for my IPhone last year and it’s so simple and easy that it’s a snap to use. Basically, it’s for bicycles or slow speed vehicles and registers in tenth’s of MPH. Perfect for small tractor use when lacking a speedometer. Here’s a link to an online AppStore Preview description of it:

https://apps.apple.com/us/app/speedometer-mph/id530942864

On my IPhone App store it’s listed as: "Speedometer (mph) Speed of car, bicycle, motorcycle by SHIGETO TAKAGI"

In your App Store if you just search “Shigeto Takagi” it should pop up. And it’s FREE. I’m sure there’s other apps that’ll do the same and more. But when all you need is accurate MPH this one works great.

Knowing your spray pattern width, your total gallons/minute output at the nozzles (not the pumps rating), the chemical’s application rate and a means to accurately monitor your ground speed you’ll be able to calculate the proper chemical amount in a given volume of water applied at the right speed for proper application/coverage of your ground. You’ll also need a cell phone and service in the area to be sprayed.

There’s all kinds of online calculators and info to help that can be found with a google search. So, whether your spraying fertilizer, herbicides for your lawn or large garden area, or chemicals for mosquito/pest control this should help prevent applying too much or not enough chemical for your operation. No need to guess anymore which really is better for the environment.
 
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Ping

Active member

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BX2370-1
Dec 25, 2018
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Troy, Ohio
Thanks for the heads up! This has got to be way easier than my caveman method I’ve been using: setting throttle, measuring off 100’, timing run then doing the math!
Regards
 

bird dogger

Well-known member
Vendor Member

Equipment
Kubota B2650 and lots of other equipment
Feb 24, 2019
1,598
1,456
113
North Dakota
Thanks for the heads up! This has got to be way easier than my caveman method I’ve been using: setting throttle, measuring off 100’, timing run then doing the math!
Regards
Hi Ping! I'm glad you can use this! And it sure is easy once you time your sprayer to see how many gallons/minute it puts out or how long to empty a full tank of water. Once that's known you can alter either the amount of chemical, volume of water, travel speed or any combination of them to apply your product to specs.

I use two methods. When I know the amount of area to be sprayed (our corn patch) I'll calculate the full amount of chemical to cover that area in a given volume of water and calculate my ground speed accordingly.

In an unknown area, such as an irregular lawn, I'll calculate the proper amount of chemical for a given volume of water and ground speed but knowing that it won't cover everything. When the spray runs out I'll determine what's left to spray and mix up that volume and finish. It's surprising how accurate/close you can be to having an empty tank at the end of the application.
Regards,
David