Re: [apple-crop] Sprayer Calibration Between Training Styles
Vincent, I would like to do alternate row spraying in the high density block and at 4 mph, I noticed poor coverage similar to what Peter mentioned. Are you guys going every row? Also, my rows are very, very tight up against the deer fence and that speed it was hard to get turned around without downshifting. Cheers, Nick Lucking Cannon Valley Orchard Cannon Falls, MN ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Sprayer Calibration Between Training Styles
We use 1/2 rate from both sides for the coverage as opposed to full rate both sides. Also you can mix for one block and then either add the water or more material for the other block. Art Kelly Kelly Orchards Acton, Maine On Jun 9, 2014, at 4:04 AM, Nick Lucking wrote: Vincent, I would like to do alternate row spraying in the high density block and at 4 mph, I noticed poor coverage similar to what Peter mentioned. Are you guys going every row? Also, my rows are very, very tight up against the deer fence and that speed it was hard to get turned around without downshifting. Cheers, Nick Lucking Cannon Valley Orchard Cannon Falls, MN ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Sprayer Calibration Between Training Styles
Thanks for the responses. So when you guys use the spray controllers do you try to maintain the same GPA across all blocks? Seems like if you don't have one (like me) and you mix a tank to apply across multiple training styles with varying row spacing the pesticide rate per acre would be out of whack between them. Here's my scenario. 1.5 acres is conventional free standing and 1.5 is tall spindle. When I did TRV calculations last season and checked the GPM of sprayer nozzles obviously with the difference in row spacing the rate was way higher for the tall spindle block. When I adjusted the gear speed so the GPA would match the free standing block, tractor speed was way too fast ~4 MPH. I suppose I could get another set of smaller nozzles for the tall spindle block to try to keep things even between blocks. Any further advise? Cheers, Nick Lucking Cannon Valley Orchard Cannon Falls, MN ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Sprayer Calibration Between Training Styles
Hi, As travel speeds increase, this may increase turbulence, increasing potential for drift, you also may not like the coverage you get. Sounds like Nick has older plantings and newer high density, so a slower speed may be needed on the older trees. We completed spray coverage analysis with water sensitive cards last year in a tall-spindle orchard that was being sprayed at 4mph and every-other-row. Results showed variable coverage on the row being sprayed and no coverage on the opposite row, especially on the back sides of the leaves. Dr. Andrew Landers, Cornell, discusses the role of travel speed and fan speed to achieve spray penetration and coverage in his book, Effective Vineyard Spraying A Practical Guide for Growers. This resource should be on everyone's shelf. Thanks, Peter = Peter Werts Project Coordinator Specialty Crop IPM IPM Institute of North America, Inc. 4510 Regent St. Madison WI 53705 Office: 608 232-1410 Cell: 612 518-0319 Fax: 608 232-1440 pwe...@ipminstitute.org www.ipminstitute.org -Original Message- From: apple-crop-boun...@virtualorchard.net [mailto:apple-crop-boun...@virtualorchard.net] On Behalf Of Vincent Philion Sent: Friday, June 06, 2014 8:07 AM To: Apple-Crop Subject: Re: [apple-crop] Sprayer Calibration Between Training Styles Hi! adjusted the gear speed so the GPA would match the free standing block, tractor speed was way too fast ~4 MPH. Why is 4MPH (6,5km/h) too fast? hills? it's quite common to have forward speeds of 7,3km/h in tall spindle (4,5MPH) Vincent Philion IRDA ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
[apple-crop] Sprayer Calibration Between Training Styles
Hi everyone, Just curious as to how you guys with larger orchards spray blocks in your orchards when some might be high density and others free standing. Do you do a couple of calibrations with different gear/ pressure settings or just do all of one style block at a time? Cheers, Nick Lucking Cannon Valley Orchard Cannon Falls, MN ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Sprayer Calibration Between Training Styles
Nick, We use a TeeJet sprayer controller which allows us to change flow/pressure based on tree density. At times this requires a change in travel speed and or tractor rpms as well. Cost was about $1500, and at times the unit is a bit of a headache. Mo Tougas On Thu, Jun 5, 2014 at 1:47 AM, Nick Lucking n...@cannonvalleyorchard.com wrote: Hi everyone, Just curious as to how you guys with larger orchards spray blocks in your orchards when some might be high density and others free standing. Do you do a couple of calibrations with different gear/pressure settings or just do all of one style block at a time? Cheers, Nick Lucking Cannon Valley Orchard Cannon Falls, MN ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop -- Maurice Tougas Tougas Family Farm Northborough,MA 01532 508-450-0844 ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Sprayer Calibration Between Training Styles
I use a Raven system on my field crop sprayer and love it. Just punch in the gallons per acre you desire and it automatically measures flow and speed then tells you if you need to slow down or speed up. As Peter said even though the Raven controls nozzle pressure it’s up to you to use a nozzle in the ballpark of the desired GPA plus figure in tree row volume. Ground speed is measured by GPS and is very accurate. Two years ago the Teejet GPS, flow meter, pressure control valve and Raven main computer cost about $850 plus $150 for the 8 foot cable I needed for our sprayer/tractor combo. The computer is the cheapest one Raven makes and will control up to three booms. I see no reason it wouldn’t work on an airblast sprayer. Bill Fleming Montana State University Western Ag Research Center Corvallis, MT 59828 From: apple-crop-boun...@virtualorchard.net [mailto:apple-crop-boun...@virtualorchard.net] On Behalf Of Peter Werts Sent: Thursday, June 05, 2014 5:22 AM To: Apple-crop discussion list Subject: Re: [apple-crop] Sprayer Calibration Between Training Styles Nick, You are correct. To maintain your target gallon per acre application of water you need to consider adjustments to your travel-ground speed, gallon per minute (GPM) flow rate from the nozzle tips and the tree-row width. Changing your pressure will impact your droplet size and not do too much to flow rates, i.e., it takes a four-fold increase in pressure to double nozzle GPM. I have been working with other growers in Minnesota and Wisconsin on calibration. I commonly find calibration to be significantly off where we have variable tree size and row spacing. In 2012 we calibrated 30 different scenarios on 12 sprayers and found over application by 52% and under application by 20% to be very common. The Raven systems are very nice, especially if you have an AgTec. However you still need to make sure your travel speed is calibrated. If your using a high-pressure sprayer, the individual nozzle output should be within 5% of the manufactures specified GPM at a specified pressure. There will be an IPM field day in northeast Iowa on June 20 where we will be addressing calibration. I can send you more information, on this if you like. I can also come out to your orchard and help you with this. Thanks, Peter = Peter Werts Project Coordinator Specialty Crop IPM IPM Institute of North America, Inc. 4510 Regent St.x-apple-data-detectors://0/0 Madison WI 53705x-apple-data-detectors://0/0 Office: 608 232-1410tel:608%20232-1410 Cell: 612 518-0319tel:612%20518-0319 Fax: 608 232-1440tel:608%20232-1440 pwe...@ipminstitute.orgmailto:pwe...@ipminstitute.org www.ipminstitute.orghttp://www.ipminstitute.org/ On Jun 5, 2014, at 12:47 AM, Nick Lucking n...@cannonvalleyorchard.commailto:n...@cannonvalleyorchard.com wrote: Hi everyone, Just curious as to how you guys with larger orchards spray blocks in your orchards when some might be high density and others free standing. Do you do a couple of calibrations with different gear/pressure settings or just do all of one style block at a time? Cheers, Nick Lucking Cannon Valley Orchard Cannon Falls, MN ___ apple-crop mailing list apple-crop@virtualorchard.netmailto:apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Sprayer Calibration Between Training Styles
I saw that, too. I had a story earlier this year with Mark Ledebuhr, who was attempting to devise such a system for a lower cost than the Raven. Richard On Jun 5, 2014, at 11:15 AM, Deirdre Birmingham deirdr...@gmail.com wrote: I have an Ag-Tec sprayer, and old 3002. I have not heard of the Raven system, but wonder if this would apply to an older Ag-Tec model. Thanks, Deirdre On Thu, Jun 5, 2014 at 6:22 AM, Peter Werts pwe...@ipminstitute.org wrote: Nick, You are correct. To maintain your target gallon per acre application of water you need to consider adjustments to your travel-ground speed, gallon per minute (GPM) flow rate from the nozzle tips and the tree-row width. Changing your pressure will impact your droplet size and not do too much to flow rates, i.e., it takes a four-fold increase in pressure to double nozzle GPM. I have been working with other growers in Minnesota and Wisconsin on calibration. I commonly find calibration to be significantly off where we have variable tree size and row spacing. In 2012 we calibrated 30 different scenarios on 12 sprayers and found over application by 52% and under application by 20% to be very common. The Raven systems are very nice, especially if you have an AgTec. However you still need to make sure your travel speed is calibrated. If your using a high-pressure sprayer, the individual nozzle output should be within 5% of the manufactures specified GPM at a specified pressure. There will be an IPM field day in northeast Iowa on June 20 where we will be addressing calibration. I can send you more information, on this if you like. I can also come out to your orchard and help you with this. Thanks, Peter = Peter Werts Project Coordinator Specialty Crop IPM IPM Institute of North America, Inc. 4510 Regent St. Madison WI 53705 Office: 608 232-1410 Cell: 612 518-0319 Fax: 608 232-1440 pwe...@ipminstitute.org www.ipminstitute.org On Jun 5, 2014, at 12:47 AM, Nick Lucking n...@cannonvalleyorchard.com wrote: Hi everyone, Just curious as to how you guys with larger orchards spray blocks in your orchards when some might be high density and others free standing. Do you do a couple of calibrations with different gear/pressure settings or just do all of one style block at a time? Cheers, Nick Lucking Cannon Valley Orchard Cannon Falls, MN ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop -- Deirdre Birmingham The Cider Farm www.TheCiderFarm.com 608-219-4279 7258 Kelly Rd. Mineral Point, WI 53565 ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop Richard Lehnert Associate Editor, Good Fruit Grower 11364 W. Willard Rd. Trufant MI 49347 616-984-5221 616-984-6001 Cell: 616-835-8121 richard.lehn...@gmail.com lehn...@goodfruit.com www.goodfruit.com ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
