Re: [Apple-Crop] sprayer calibration debate

[Peter Werts]

Hal, 

 

Question. As an enclosed-cabbed tractor ages, will the seal around the doors 
wear out, or better yet, how do you verify the enclosed cab is providing the 
protection you are after?  That might make an argument for wearing the 
respirator in the cab, at some point during the life of the tractor.  

 

Regarding the rest of calibration of the calibration discussion, you should be 
able to separate tree-row volume from your calculations which use row width, 
travel speed and gallons-per minute, to establish a gallon per acre application 
rate.  All the growers we work with have variability in their row spacing.  
Three things we do to address this include minor adjustments to travel speed, 
flipping over/turning on or off spray nozzles, and use of spray control 
systems.  So, lots of ways to skin that cat, but we finish and think we have it 
set up correctly, we verify by hanging those water/oil-sensitive cards in the 
trees and see if we are satisfied with the coverage. 

 

I would never trust a site line on a spray tank and it is easy to put more 
water in a tank than what a tank is labeled to hold. Think about any water 
bottle, the 30 fl. oz. mark is about an inch below the top of the bottle.  As 
with a sprayer, if you fill it all the way up, there will be more water in it, 
than what it is labeled to hold.  A good way to check is to calculate the GPM 
flow of the hose you use to fill your sprayer with, then just set a timer to 
accurately fill your tank.  This will help you be sure you are putting the 
correct amount of water in the tank, before you run it out through your control 
block. 

 

Another helpful website is http://sprayers101.com/airblast101/

 

Several years ago we had some money from EPA to go calibrate sprayers.  We 
worked on dozens of spray scenarios and found applicators were applying 52% 
more water, on average, than what they were reporting.  The number of broken 
nozzles, missing screens, etc. was amazing.  So at the very least, regardless 
of what method you use, calibration helps address some of the basic maintenance 
needs of a sprayer, which is helpful in preventing breakdowns during that first 
primary scab infection at green tip. 



 

 

Thanks,

 

Peter

 

 

=

Peter Werts

Specialty Crops Project Manager

IPM Institute of North America, Inc.

211 South Paterson St. 

Suite #380 

Madison WI 53703

Office: 608 232-1410

Cell: 612 518-0319

Fax: 608 232-1440

pwe...@ipminstitute.org  

www.ipminstitute.org  

 

 

 

From: apple-crop [mailto:apple-crop-boun...@virtualorchard.com] On Behalf Of 
Con.Traas
Sent: Thursday, March 2, 2017 9:46 AM
To: 'Apple-Crop discussion list' 
Subject: Re: [Apple-Crop] sprayer calibration debate

 

Hello Hal,

I don’t think an additional respirator should be needed. After all, the 
respirator in the tractor cab is the same design (only larger) than the one on 
the oral one.

Regarding the theoretical calibration of sprayers, whenever an inspector tells 
me they to do it with water, and to apply that result to a water/chemical 
mixture I have a go at them. Only a regulator who never applied products with 
different viscosities (due to temperature or different mixtures) would pretend 
you can pre-calibrate with more than a 90% accuracy. The fact is the same 
sprayer with different products in it, or water of different temperatures, will 
put our at different rates.

 

Con (Cornelius) Traas

Room SR2-009,

Department of Biological Sciences,

University of Limerick.

Ph: 061-202905

M: 086-6091998

T: @theapplefarmer

 

From: apple-crop [mailto:apple-crop-boun...@virtualorchard.com] On Behalf Of 
Hal Wentzel
Sent: 02 March 2017 15:24
To: Apple-Crop discussion list
Subject: Re: [Apple-Crop] sprayer calibration debate

 

Since I upgraded my tractor this winter, I plan on recalibration and this is 
the method I plan to use.  Adjust the nozzles and the tractor speed until I 
feel I get adequate coverage of the trees.  I will then fill my tank with 50 
gallons of water, and spray it over a prescribed route.  When the tank is 
empty, I calculate the acres sprayed.  From that I can determine the number of 
gallons per acre.  To that number of gallons, I will add the chemical required 
per acre.  Since we are high density, well pruned, I multiply by .7 (captan:  
6# x .7= 4.2 #).  If I travel the same route, I will get the required spray per 
acre.  

 

A different question:  my new tractor has an enclosed cab (no more monkey 
suit), with an activated charcoal filter.  What is the opinion on the necessity 
of also wearing a respirator.  EPA would say yes, but are they too cautious.

Hal Wentzel 

Pleasant View Orchard 

Niagara, Wi

715-927-2050

 

On Thu, Mar 2, 2017 at 8:16 AM John Bruguiere mailto:j...@dickiebros.com> > wrote:

Hello all, need some healthy practical advice on sprayer calibration.  
Specifically air blast sprayers.  For d

[Apple-Crop] Help

[Caryn Wong]

Hi there...I've been trying to get this posted onto your site. I don't
believe it went through as expected as I recieved a Mail Delivery Failure
notice. Can you help...sorry I am not very tech savvy. Caryn

*

Job Opportunity - Pest Control Manager - Central Virginia

Joe Produce Search is working with a commercial farm in Virginia to help
them find a Pest Control Manager that has experience making recommendations
and decisions on what chemicals to use on their apples (60%),
peaches/nectarines (40%) and wine grapes. This is a great opportunity for
someone who wants to use their tree fruit knowledge in a real world,
production environment. Company will provide relocation assistance.

Job Description:

We are a family owned and operated grower/packer/shipper of fresh apples,
peaches and nectarines. Our family has operated our farms for over 100
years and it’s not uncommon to see three generations working together
during the summer months!

We are currently searching for a full-time person to manage and administer
our spray program. We are not just looking for another employee, we need
someone with a strong work ethic and the skills to match! We like to work
hard, get along and treat everyone with respect and authenticity. We’re
ideally looking for someone who makes this their last career move and grows
long-term with our operation.

In this role, you will work closely with a Partner and Owner as you make
daily decisions involving which chemicals are most appropriate for each
crop, while implementing IPM and economic factors in the decision making
process. We use environmentally friendly integrated pest management
practices with timed interventions to minimize the amount of spraying
needed for quality fruit in our humid climate. Candidates should have
extensive knowledge and experience in pest control involved in the growing
of high quality apples and peaches.
Responsibilities & Duties:

   - Scouts orchards and monitor crops for insect pests and plant diseases.
   - Monitor weather and degree days relating to insect’s pests and plant
   diseases.
   - Be onsite to administer the spray program and answer questions from
   applicators.
   - Work with staff and senior management to accomplish all tasks.
   - Insure compliance with all applicable government agencies.
   - Other duties as assigned.

Requirements:

   - 1-3 years’ experience operating or managing a spray program on apples
   or peaches with a history of success.
   - Ability to be dynamic in a fast-paced environment.
   - Self-starter, independent personality, ability to multi-task and
   manage both short and long-term goals.
   - Exceptional computer skills, specifically Microsoft Excel
   - Great organization with excellent planning and scheduling abilities.
   - Bilingual in Spanish is a plus!

To apply, please send your resume to ca...@joeproduce.com. Please feel free
to contact me for more details and information at 916-365-9881.
Caryn Wong
Executive Search Consultant
Joe Produce Search, Granite Bay, CA
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Re: [Apple-Crop] sprayer calibration debate

[kellyorchards]

I have done something similar to Con.  A spreadsheet factoring in the various 
blocks row spacing and TRV dilute gallons per acre.   I have found ground speed 
to be an effective way to make the necessary adjustments.   In one block I idle 
along at 1700 rpms and move enough air to get good coverage.  We also spray 
both sides for better coverage. 




Art Kelly
Kelly Orchards
Acton, Maine

 Original message 
From: "Con.Traas"  
Date: 03/02/2017  10:35 AM  (GMT-05:00) 
To: 'Apple-Crop discussion list'  
Subject: Re: [Apple-Crop] sprayer calibration debate 
 
Hello John,
I think it is a little tricky to make a formula, so I have made up a simple 
Excel spreadsheet.
If you are dealing with trees at 18 x 8 as you say, then you would drive 2408 
feet to spray your acre of 331 trees (8 feet x 331 trees = 2645 feet - I have 
adjusted your figure of 300 per acre to 331 as that is how many trees you will 
get per acre at your selected spacing). As a mile is 5280 feet, you are driving 
0.50 miles to the acre.
So if you are driving at 2.4mph (for example), it will take you 12.5 minutes to 
spray your acre. (0.46/2.4*60)
And if you are spraying 9 gallons per minute (for example), your gallons per 
acre would be 112.7
 
 
Con (Cornelius) Traas
Department of Biological Sciences, (and The Apple Farm)
University of Limerick.
Ph: 061-202905
M: 086-6091998
T: @theapplefarmer
 
From: apple-crop [mailto:apple-crop-boun...@virtualorchard.com] On Behalf Of 
John Bruguiere
Sent: 02 March 2017 14:16
To: apple-crop@virtualorchard.com
Subject: Re: [Apple-Crop] sprayer calibration debate
 
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  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  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  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
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George Greene
68 Willow Lane
Wiscasset, ME 04578
207-882-8074
cortla...@icloud.com
 
 

 

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Tougas Family Farm
Northborough,MA 01532
508-450-0844
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Re: [Apple-Crop] sprayer calibration debate

[Con . Traas]

Hello Hal,
I don’t think an additional respirator should be needed. After all, the 
respirator in the tractor cab is the same design (only larger) than the one on 
the oral one.
Regarding the theoretical calibration of sprayers, whenever an inspector tells 
me they to do it with water, and to apply that result to a water/chemical 
mixture I have a go at them. Only a regulator who never applied products with 
different viscosities (due to temperature or different mixtures) would pretend 
you can pre-calibrate with more than a 90% accuracy. The fact is the same 
sprayer with different products in it, or water of different temperatures, will 
put our at different rates.

Con (Cornelius) Traas
Room SR2-009,
Department of Biological Sciences,
University of Limerick.
Ph: 061-202905
M: 086-6091998
T: @theapplefarmer

From: apple-crop [mailto:apple-crop-boun...@virtualorchard.com] On Behalf Of 
Hal Wentzel
Sent: 02 March 2017 15:24
To: Apple-Crop discussion list
Subject: Re: [Apple-Crop] sprayer calibration debate

Since I upgraded my tractor this winter, I plan on recalibration and this is 
the method I plan to use.  Adjust the nozzles and the tractor speed until I 
feel I get adequate coverage of the trees.  I will then fill my tank with 50 
gallons of water, and spray it over a prescribed route.  When the tank is 
empty, I calculate the acres sprayed.  From that I can determine the number of 
gallons per acre.  To that number of gallons, I will add the chemical required 
per acre.  Since we are high density, well pruned, I multiply by .7 (captan:  
6# x .7= 4.2 #).  If I travel the same route, I will get the required spray per 
acre.

A different question:  my new tractor has an enclosed cab (no more monkey 
suit), with an activated charcoal filter.  What is the opinion on the necessity 
of also wearing a respirator.  EPA would say yes, but are they too cautious.
Hal Wentzel
Pleasant View Orchard
Niagara, Wi
715-927-2050

On Thu, Mar 2, 2017 at 8:16 AM John Bruguiere 
mailto: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 
mailto: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 
mailto: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 
mailto: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
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George Greene
68 Willow Lane
Wiscasset, ME 04578
207-882-8074
cortla...@icloud.com

Re: [Apple-Crop] sprayer calibration debate

[Con . Traas]

Hello John,
I think it is a little tricky to make a formula, so I have made up a simple 
Excel spreadsheet.
If you are dealing with trees at 18 x 8 as you say, then you would drive 2408 
feet to spray your acre of 331 trees (8 feet x 331 trees = 2645 feet - I have 
adjusted your figure of 300 per acre to 331 as that is how many trees you will 
get per acre at your selected spacing). As a mile is 5280 feet, you are driving 
0.50 miles to the acre.
So if you are driving at 2.4mph (for example), it will take you 12.5 minutes to 
spray your acre. (0.46/2.4*60)
And if you are spraying 9 gallons per minute (for example), your gallons per 
acre would be 112.7


Con (Cornelius) Traas
Department of Biological Sciences, (and The Apple Farm)
University of Limerick.
Ph: 061-202905
M: 086-6091998
T: @theapplefarmer

From: apple-crop [mailto:apple-crop-boun...@virtualorchard.com] On Behalf Of 
John Bruguiere
Sent: 02 March 2017 14:16
To: apple-crop@virtualorchard.com
Subject: Re: [Apple-Crop] sprayer calibration debate


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 
mailto: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 
mailto: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 
mailto: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
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68 Willow Lane
Wiscasset, ME 04578
207-882-8074
cortla...@icloud.com




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Tougas Family Farm
Northborough,MA 01532
508-450-0844
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Sprayer Cal.xlsx
Description: Sprayer Cal.xlsx
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Re: [Apple-Crop] sprayer calibration debate

[Hal Wentzel]

Since I upgraded my tractor this winter, I plan on recalibration and this
is the method I plan to use.  Adjust the nozzles and the tractor speed
until I feel I get adequate coverage of the trees.  I will then fill my
tank with 50 gallons of water, and spray it over a prescribed route.  When
the tank is empty, I calculate the acres sprayed.  From that I can
determine the number of gallons per acre.  To that number of gallons, I
will add the chemical required per acre.  Since we are high density, well
pruned, I multiply by .7 (captan:  6# x .7= 4.2 #).  If I travel the same
route, I will get the required spray per acre.

A different question:  my new tractor has an enclosed cab (no more monkey
suit), with an activated charcoal filter.  What is the opinion on the
necessity of also wearing a respirator.  EPA would say yes, but are they
too cautious.
Hal Wentzel
Pleasant View Orchard
Niagara, Wi
715-927-2050

On Thu, Mar 2, 2017 at 8:16 AM John Bruguiere  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 
> 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 
> 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 
> 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 <%28207%29%20882-8074>
> cortla...@icloud.com
>
>
>
>
>
> ___
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>
>
>
>
> --
> Maurice Tougas
> Tougas Family Farm
> Northborough,MA 01532
> 508-450-0844
>
> ___
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> http://virtualorchard.com/mailman/listinfo/apple-crop
>
>
>
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>
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Pleasant View Orchard
W6050 Chapman Road
Niagara, WI  54151
715-927-2050
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Re: [Apple-Crop] sprayer calibration debate

[Jon Clements]

You can look at the third item here to do exactly what you want I think:

http://fruitadvisor.info/tfruit/clements/trvcalculator.html

Jon

On Thu, Mar 2, 2017 at 9:15 AM, John Bruguiere  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 
> 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 
> 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 
>> 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
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>>
>>
>> George Greene
>> 68 Willow Lane
>> Wiscasset, ME 04578
>> 207-882-8074 <%28207%29%20882-8074>
>> cortla...@icloud.com
>>
>>
>>
>>
>>
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>>
>>
>
>
> --
> Maurice Tougas
> Tougas Family Farm
> Northborough,MA 01532
> 508-450-0844 <(508)%20450-0844>
>
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>
>
>
> ___
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>
>
>
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>


-- 
JMCEXTMAN
Jon Clements
cleme...@umext.umass.edu
aka 'Mr Liberty'
aka 'Mr Honeycrisp'
IM mrhoneycrisp
413.478.7219
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Re: [Apple-Crop] sprayer calibration debate

[Rob Crassweller]

Check out the Penn State web site on calibration

extension.psu.edu/pesticide-education

Click on Air Blast Calibration Information link on right hand side

Rob Crassweller

Sent from my iPhone

On Mar 2, 2017, at 9:53 AM, John Bruguiere 
mailto: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 
mailto: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 
mailto: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 
mailto: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
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George Greene
68 Willow Lane
Wiscasset, ME 04578
207-882-8074
cortla...@icloud.com





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--
Maurice Tougas
Tougas Family Farm
Northborough,MA 01532
508-450-0844
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Re: [Apple-Crop] sprayer calibration debate

[John Bruguiere]

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 
mailto: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 > 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
mailto: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
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George Greene
68 Willow Lane
Wiscasset, ME 04578
207-882-8074 
cortla...@icloud.com 





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--
Maurice Tougas
Tougas Family Farm
Northborough,MA 01532
508-450-0844
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