Category: Tables & Apps

Calculators, tables and applications

  • Unit conversion tables

    Unit conversion tables

    Canada, like most of the world, is officially Metric. Our American friends are US Imperial. It sounds very cut and dried, doesn’t it?

    Anyone that’s tried to calibrate a sprayer in Canada quickly discovers that we’re really a horrible amalgam of the two systems. Our sprayers and nozzles often hail from the states, and that means US Imperial. Our pesticide labels hail from Health Canada’s Pest Management Regulatory Agency, and that means Metric

    And so, when speaking with applicators about their sprayer practices, we’re often treated to mind-rending sentences like:

    Well, I drive 12 mph, spraying about 150 L/ha and my pressure is about 40 psi. How many ml/min should my nozzles emit for a product that wants 6 oz/acre acid equivalent?

    Cue the quiet sobbing…

    Well, your smoking calculators are in for a treat! In a fit of frustration we created the ultimate set of conversion tables that should set you right for almost any Imperial/Metric emergency! Find one we missed -We DARE you! (update: Tip of the hat to D. Wiens of Saskatchewan, who found one! We added it.)

    Simply find your current units in the left-hand column. Then find the units you are converting to in the upper row. Now multiply by the conversion figure where they intersect in the table.

    Yes, they’re ugly, but they’re absolutely complete! If the tiny ones are too tiny to read, right click and download the image so you can zoom in. It’s a limitation of this website that we can’t make them larger.

  • Lessons Learned from the Top 5 Field Sprayer Articles of 2015

    Lessons Learned from the Top 5 Field Sprayer Articles of 2015

    When Jason and I launched the Sprayers101 website in June, I wasn’t sure what to expect. Seven short months and 150 posts later, we’re stoked to have had such a great response.  About 70,000 page views.  17,000 users.  Of the over 100 countries that have visited, Canada, the US, Russia, Australia, and the UK are the top 5.  Jason provided some great background to the venture in his recap of the top horticulture posts.  I owe him a debt of gratitude for leading this effort.

    It was a pleasant surprise that a very specific subject matter such as agricultural spraying could generate this level of response.  Without a single mention of the Kardashians!

    Here are the top five posts on field spraying for 2015:

    1. Agrifac Condor: A Wake-up Call for North American Sprayer Manufacturers? 3078 views. Prior to writing this article, I’d been watching this relatively new (to me) Dutch company for about one year.  I noticed that they thought big, and featured technologies that had benefits for applicators, like air-assist or twin-fluid nozzles, wide booms, and clever plumbing. On seeing the sprayer first-hand at Canada’s Outdoor Farm Show in Woodstock, I knew it was just what the industry needed.  A wake up call.
    2. Exploding Sprayer Myths Episode IV: Speed Spraying. 2211 views.  What is life without a bit of fun?  Writing and filming these episodes had us in stitches.  With generous support of Shaun Haney and the gang at RealAgriculture.com, we’re producing these in our spare time and with gifted resources.  A big thanks to Bern Tobin for being the videographer, director, and rough cut editor, and Jason Stroeve for the final editing, special effects, voice-overs and all those other things that go into it.  We hope to do more of these, resources permitting.
    1. A New Way to Purchase Sprayers. 1058 views. A friend recently reminded me that I used to urge producers to spend more money on sprayers. Well, the industry responded by making sprayers more expensive (you’re welcome), without actually improving our control over deposition uniformity, coverage, or drift.  So yes, people are spending more, but not the way I intended.  In the meantime, the innovations that matter, those on the spray boom – width, aerodynamics, recirculation, better sectional controls, droplet size and rate management – are still considered special options that are probably too expensive.  We’re still looking for the right balance here.
    1. Sprayer Tank Cleanout. 968 views. Cleaning a sprayer remains one of the top concerns of an applicator, actually the whole industry, and we’ve written about it several times.  But it wasn’t until we had a guest contributor, Katelyn Duncan, offer her views that we had any real success.  Katelyn is a Regina area farmer with her own blog and an interest in machinery.  She approached the issue from a practitioner’s perspective and this really resonated and generated a lot of discussion.
    1. Calculators and Tables. While no single table or calculator broke into our top 5, collectively they did and this is worth mentioning.  Much of spraying is mathematical, from rate calculations, to calibrations and nozzle size selection, travel speed ranges and so forth.  Despite living in an age of connectivity and touch screens, a laminated table in the sprayer cab is often worth its weight in gold.

    So what are the lessons?

    For one, we showed that a dedicated website for just one aspect of a farming operation seems to be in demand.  That should encourage those specializing in seeding or harvesting techniques, commodities, fertility.  Where are those sites?

    People seem to want alternative, independent views, sometimes voiced as controversial opinions. Much of our media is controlled by corporate interests with soft-sell implications.  Yes, it’s interesting and valuable information.  But a reality check, whether it comes from an independent researcher or a new entry from the corporate world, is still needed.

    Alternative formats for information are important.  Not everyone learns by reading articles or deciphering charts. By offering a bit of entertainment, we can reach new clients or demographics that we’d otherwise leave behind.  Plus, for Jason and I, the opportunity to be creative is probably the single most important thing about Sprayers101 that keeps us going.

    Lastly, we are so pleased to have guest contributors on our site.  Anyone can contribute – just drop us a note.  I think it’s important to hear different viewpoints, and learn from each other.  That’s one of the great things about agriculture – the willingness to share information.  Any applicators out there who want to describe an aspect of their operation, from innovations in how they fill faster, to their experience with boom lights or cameras, to their thoughts on boom height controllers or PWM, we’d love to hear from you.

    Thanks everyone for supporting Sprayers101.com!

  • Spray Quality and Volume Matrix

    Spray Quality and Volume Matrix

    We often write about how valuable water sensitive paper can be to visualize and assess the coverage we’re getting from a specific application method.  A handy reference is this matrix that combines both factors.  Print it and use it in the field to compare what your application method is doing to these relative standards.  On average, you will want to see deposits similar to those in the middle of the matrix.

    Spray Quality Matrix (US)

     

     

     

     

     

     

     

    Download US units Matrix here (pdf)

    Spray Quality Matrix (metric)

     

     

     

     

     

     

     

    Download Metric Matrix here (pdf)

     

     

  • Capstan Calibration Chart (with Pressure Drop)

    Capstan Calibration Chart (with Pressure Drop)

    Pulse-width Modulated flow control allows you to change travel speed by a factor of about five without a change in spray pressure.  This chart shows which nozzle flow rates to use. Note the significant pressure drop across the Capstan solenoid.  This value must be added to the cab spray pressure, as explained here.

    Capstan Tip Chart (with Pressure Drop).pdf

  • Tank Rinse Dilution

    Tank Rinse Dilution

    If you have a limited amount of clean water to rinse your sprayer, this can help you decide how to make the best use of it.  Simple enter two values – the amount of pesticide remaining in your tank sump (including the suction line to the pump and the return line to the tank), and the amount of clean water you want to add.  The units (gal, L) are not important as long as they are the same for both entries.

    The app allows you to calculate the dilution power of up to 5 sequential rinses.