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 <[email protected]> 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 > > [email protected] > > www.ipminstitute.org > > > > On Jun 5, 2014, at 12:47 AM, Nick Lucking <[email protected]> > 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 > [email protected] > http://virtualorchard.net/mailman/listinfo/apple-crop > > > _______________________________________________ > apple-crop mailing list > [email protected] > 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
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