My approach here may be a bit unorthodox, but it has produced good results for me. For most materials there are given ranges per acre on the label. I simply use the physical acreage covered by each load to mix. In some blocks my tankload will cover 6 acres, while some narrower row blocks a load will only cover 4 acres. I calculate acres using an old computer program I have, but I think with google earth you can draw out a shape on the satellite image and it will calculate the acreage.
I also adjust the rate of pesticide used per acre within the allowed range depending on tree size and arrangement. For the narrow row blocks where a tankload covers 4 acres I have found through experience that 3 pounds of captan is sufficient for most applications , meaning that 12 pounds of captan per load is needed. while the wider rows of standard trees approaching 100 years old next to them require the maximum 5 pound per acre rate of captan for consistent scab control. So that trip is covering 6 acres at the 5 pound rate, so a full 30 pounds of captan is needed in that mix. I did use simpler numbers for illustration purposes. My real numbers involve pesky fractions that would make the example long and confusing. Ernest Rollins Rollins Orchards 207-717-7057 > On Mar 2, 2017, at 9:15 AM, John Bruguiere <j...@dickiebros.com> wrote: > > Hello all, need some healthy practical advice on sprayer calibration. > Specifically air blast sprayers. For decades we have measured a block of > trees to determine acreage, sprayed out tank and determined gallons per acre > based on what area was covered in tank. For example trees planted at 8 x 18 > spacing gave us 300 trees to acre, we sprayed out tank, counted trees and > determined that our sprayer puts out 2.5 acres per tank. we used this to > determine amount of material to put in the tank etc. All the calibration > formulas , I have seen require tree row volume(height x row spacing) to be > part of equation. I have 4-5 different spacings in 100 acres of orchard > which makes it more of a headache to constantly figure gallons per acre and > spray materials needed in each different block(thus the reason we simply > measured trees per acre). I know my speed , i know my gallons per minute but > can't find an equation that converts this to gallons per acre without tree > row volume. > > need a simple but effective solution...any takers? > > in Virginia we have plums in full bloom, fantasia and red gold nectarines in > pink and some open blooms, 21 degrees forecasted on friday and saturday night. > > God Bless, > > John Bruguiere > > Dickie Bros. Orchard > >> On 1/30/2017 6:36 PM, Arthur Kelly wrote: >> I agree Mo. We try and remove trees every year and plant every year. I did >> use the word can to hedge the productive life of a block. >> >> Sent from my iPhone >> >> On Jan 30, 2017, at 5:48 PM, maurice tougas <appleman.maur...@gmail.com> >> wrote: >> >>> Art >>> >>> I agree that it's great to be out pruning. I disagree that you should >>> expect a longer productive life with high density systems. My goal here is >>> to be looking at replanting when the orchard reaches twenty years or so. >>> New varieties, strains of varieties and improved planting system encourage >>> 5% renewal in my opinion. >>> >>> My best to you >>> Mo Tougas >>> >>> On Mon, Jan 30, 2017 at 1:27 PM, George Greene <cortla...@icloud.com> wrote: >>>> Art: >>>> >>>> Your comment makes sense to me. Right now I have a cold and I fell on the >>>> ice on Dec. 29th and I am still suffering. Pt may help but it may take a >>>> while. >>>> >>>> I suppose that you are enjoying the warmer weather. >>>> >>>> Be well, George >>>> >>>>> On Jan 30, 2017, at 12:43 PM, kellyorchards <kellyorcha...@gmail.com> >>>>> wrote: >>>>> >>>>> Ruminations after a morning pruning. The weather is ideal. The temps >>>>> are in the high 20's, the wind is light and the sun is shining. Weather >>>>> like this is why we live here. Permanent limbs ultimately and inevitably >>>>> get too large. This is why high density systems can have a longer >>>>> productive life than less dense orchards. >>>>> >>>>> >>>>> >>>>> >>>>> Art Kelly >>>>> Kelly Orchards >>>>> Acton, Maine >>>>> _______________________________________________ >>>>> apple-crop mailing list >>>>> apple-crop@virtualorchard.com >>>>> http://virtualorchard.com/mailman/listinfo/apple-crop >>>> >>>> George Greene >>>> 68 Willow Lane >>>> Wiscasset, ME 04578 >>>> 207-882-8074 >>>> cortla...@icloud.com >>>> >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> apple-crop mailing list >>>> apple-crop@virtualorchard.com >>>> http://virtualorchard.com/mailman/listinfo/apple-crop >>>> >>> >>> >>> >>> -- >>> Maurice Tougas >>> Tougas Family Farm >>> Northborough,MA 01532 >>> 508-450-0844 >>> _______________________________________________ >>> apple-crop mailing list >>> apple-crop@virtualorchard.com >>> http://virtualorchard.com/mailman/listinfo/apple-crop >> >> >> _______________________________________________ >> apple-crop mailing list >> apple-crop@virtualorchard.com >> http://virtualorchard.com/mailman/listinfo/apple-crop > > _______________________________________________ > apple-crop mailing list > apple-crop@virtualorchard.com > http://virtualorchard.com/mailman/listinfo/apple-crop
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