Re: [apple-crop] Mankar Ultra-Low Volume Herbicide Applicators

[Nick Lucking]

Hi Matt,

I currently own a Mankar P-50 walk behind sprayer.  It was purchased  
for a small Christmas tree plantation.  A few of the larger Christmas  
tree growers here in MN use them with good results.  However, some  
conifers when the new growth has hardened are tolerant to glyphosate  
so I never noticed drift being an issue.  I've never used it in the  
orchard for fear of glyphosate damage.  We had a couple rows of  
Honeycrisp that had smaller, stunted leaves due to glyphosate damage  
with a normal handgun sprayer.  I refuse to use it in the orchard  
ever again.


The Mankar walk behind sprayer does get quite tiring to push it over  
large acreages especially in the summer while it is hot and the tall  
weeds cause resistance on the spray hood.  Also, I always wear a pair  
of Tyvek coveralls and chem boots as walking behind it all day does  
cause chemical to build up on clothing even though only a small  
amount is emitted.  It does not have a problem killing weeds several  
feet tall.


Cheers,

Nick Lucking
Cannon Valley Orchard
Cannon Falls, MN
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Re: [apple-crop] Mankar Ultra-Low Volume Herbicide Applicators

[Win Cowgill]

Apple Croppers: I asked our Rutgers University Tree Fruit and Vegetable 
Extension Weed Specialist, Dr Brad Majek,  for his thoughts on the Mankar ULV, 
here is his response:

"The Manker LV looks like the Herbie, the first ultra low volume controlled 
droplet applicator produced in the late 1970’s.  They produce a very uniformly 
small droplet size.  To suggest they don’t drift would be inaccurate.  They 
just drift UNIFORMLY!  I have seen the pattern drift the diameter of the spray 
pattern.  The old Herbie applied a 5 foot wide pattern and I have seen it drift 
5 feet toward the downwind direction.  This is not good in a crosswind.  It is 
at its best applying water soluble concentrates and EC formulations like 
Roundup or 2,4-D, and probably has a place treating square miles of rangeland 
with 2,4-D to control BLW and brush to encourage grass.  It has been less 
effective applying WP, DF, and Flowable formulations."
Brad Majek

Win Cowgill says" From my perspective I would not use it in stone fruit at all 
with Roundup or 2, 4d materials, or in apples with same after July 1. With 
utlra low droplet size the risks for drift are high.

Win

Win Cowgill
Apple Crop Co-Founder
Editor Horticultural News
Professor and Area Fruit Agent
New Jersey Agricultural Experiment Station
Rutgers Cooperative Extension 
PO Box 2900
314 State Route 12, Bldg. 2
Flemington, NJ 08822-2900
Office 908-788-1339
Fax- 908-806-4735
Email: cowg...@njaes.rutgers.edu
www.horticulturalnews.org/
www.virtualorchard.net/
http://virtualorchard.net/njfruitfocus/index.html
www.appletesters.net


On Oct 30, 2014, at 11:11 AM, dmnor...@royaloakfarmorchard.com wrote:

> We have a single head Enviromist mounted to our small John Deere tractor that 
> we have used for several years with no issues at all.  The keys are how high 
> you allow your weeds to get before application and how high you have to hold 
> the shield above the ground.  The higher the shield above ground, the greater 
> likelihood of drift.
>  
> Dennis Norton
> IPM Specialist/Certified Nurseryman
> Royal Oak Farm Orchard
> 15908 Hebron Rd.
> Harvard, IL 60033-9357
> Office (815) 648-4467
> Mobile (815) 228-2174
> Fax (609) 228-2174
> http://www.royaloakfarmorchard.com
> http://www.royaloakfarmorchard.blogspot.com
> - Original Message -
> From: Matt Pellerin
> To: Apple-crop discussion list
> Sent: Thursday, October 30, 2014 8:21 AM
> Subject: [apple-crop] Mankar Ultra-Low Volume Herbicide Applicators
> 
> I have been researching different options for herbicide application in my 
> orchard and came across Mankar ULV herbicide applicators.  
> http://www.mankarulv.com/  The company promotes its shielded CDA applicators 
> as virtually drift-free.  However, I have read in some apple publications 
> that the small droplets made by CDA applicators are inherently prone to 
> drift.  Does anyone have any clarifying information or experience with this 
> equipment?
> 
> Thanks,
> -- 
> Matthew Pellerin
> Agricultural Manager
> Treworgy Family Orchards
> 3876 Union St
> Levant, ME 04456
> www.treworgyorchards.com
> 207-884-8354
> 
> 
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Re: [apple-crop] Mankar Ultra-Low Volume Herbicide Applicators

[Matt Pellerin]

Are there other retractable shielded sprayer technologies (non-ULV) that
allow for in-row spray while lowering the risk of contacting tree trunks
with herbicide?

On Thu, Oct 30, 2014 at 1:37 PM, David A. Rosenberger 
wrote:

>  We experimented with a ULV shielded applicator (Bubco) for herbicide
> applications in our research orchards many years ago.  In our hillside
> orchards, the shield was never low enough on the down-hill side, and we
> killed a number of trees by hitting trunks with concentrated glyphosate.
> Unless you have a lot of money to waste, you should absolutely NEVER NEVER
> apply glyphosate in apples or stone fruits with a CDA applicator.  No
> matter how well shielded they are, you will end up damaging trees.  They
> may work OK on grapes and some other crops, especially on flat land, but I
> would never suggest that the risk is worth the benefit for apples and stone
> fruits.  DCA applicators may work OK for applying gramoxone (and some other
> herbicides??) because any gramoxone drift that escapes will only cause
> yellow spots on leaves (white spots on fruit) without becoming systemic
> within the trees.
>
>  Work by Hanna Mathers at Ohio State has shown that sub-lethal glyphosate
> exposure (via leaves or through the bark on young trees) will reduce winter
> hardiness.  I have seen several orchards over the course of my career that
> were destroyed by drift of glyphosate into lower limbs followed by a cold
> winter. You can do this without buying a CDA applicator if your
> higher-volume herbicide sprayer is not shielded and generates a lot of
> small drift-prone droplets. Nevertheless, applying a high concentration
> solution of glyphosate to apples with a sprayer specifically designed to
> generate very small droplets is the business equivalent of playing Russian
> roulette.
>
> 
> Dave Rosenberger, Professor Emeritus
>  Dept. of Plant Pathology and Plant-Microbe Biology
>  Cornell’s Hudson Valley Lab, P.O. Box 727, Highland, NY 12528
>Office:  845-691-7231Cell: 845-594-3060
> http://blogs.cornell.edu/plantpathhvl/blog-2014/
>  
>
>  On Oct 30, 2014, at 9:21 AM, Matt Pellerin 
> wrote:
>
>  I have been researching different options for herbicide application in
> my orchard and came across Mankar ULV herbicide applicators.
> http://www.mankarulv.com/  The company promotes its shielded CDA
> applicators as virtually drift-free.  However, I have read in some apple
> publications that the small droplets made by CDA applicators are inherently
> prone to drift.  Does anyone have any clarifying information or experience
> with this equipment?
>
>  Thanks,
> --
>  Matthew Pellerin
> Agricultural Manager
> Treworgy Family Orchards
> 3876 Union St
> Levant, ME 04456
>  www.treworgyorchards.com
> 207-884-8354
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>


-- 
Matthew Pellerin
Agricultural Manager
Treworgy Family Orchards
3876 Union St
Levant, ME 04456
www.treworgyorchards.com
207-884-8354
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Re: [apple-crop] Mankar Ultra-Low Volume Herbicide Applicators

[David A. Rosenberger]

We experimented with a ULV shielded applicator (Bubco) for herbicide 
applications in our research orchards many years ago.  In our hillside 
orchards, the shield was never low enough on the down-hill side, and we killed 
a number of trees by hitting trunks with concentrated glyphosate.  Unless you 
have a lot of money to waste, you should absolutely NEVER NEVER apply 
glyphosate in apples or stone fruits with a CDA applicator.  No matter how well 
shielded they are, you will end up damaging trees.  They may work OK on grapes 
and some other crops, especially on flat land, but I would never suggest that 
the risk is worth the benefit for apples and stone fruits.  DCA applicators may 
work OK for applying gramoxone (and some other herbicides??) because any 
gramoxone drift that escapes will only cause yellow spots on leaves (white 
spots on fruit) without becoming systemic within the trees.

Work by Hanna Mathers at Ohio State has shown that sub-lethal glyphosate 
exposure (via leaves or through the bark on young trees) will reduce winter 
hardiness.  I have seen several orchards over the course of my career that were 
destroyed by drift of glyphosate into lower limbs followed by a cold winter. 
You can do this without buying a CDA applicator if your higher-volume herbicide 
sprayer is not shielded and generates a lot of small drift-prone droplets. 
Nevertheless, applying a high concentration solution of glyphosate to apples 
with a sprayer specifically designed to generate very small droplets is the 
business equivalent of playing Russian roulette.


Dave Rosenberger, Professor Emeritus
Dept. of Plant Pathology and Plant-Microbe Biology
Cornell’s Hudson Valley Lab, P.O. Box 727, Highland, NY 12528
   Office:  845-691-7231Cell: 845-594-3060
http://blogs.cornell.edu/plantpathhvl/blog-2014/


On Oct 30, 2014, at 9:21 AM, Matt Pellerin 
mailto:m...@treworgyorchards.com>> wrote:

I have been researching different options for herbicide application in my 
orchard and came across Mankar ULV herbicide applicators.  
http://www.mankarulv.com/  The company promotes its shielded CDA applicators as 
virtually drift-free.  However, I have read in some apple publications that the 
small droplets made by CDA applicators are inherently prone to drift.  Does 
anyone have any clarifying information or experience with this equipment?

Thanks,
--
Matthew Pellerin
Agricultural Manager
Treworgy Family Orchards
3876 Union St
Levant, ME 04456
www.treworgyorchards.com
207-884-8354
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Re: [apple-crop] Mankar Ultra-Low Volume Herbicide Applicators

[Fleming, William]

We experimented with an ultra-low volume applicator years ago, think it was 
called a Herbi.
Worked excellent, one quart of straight glyphosate would last for hours.
Even though it was shielded drift was the problem, any wind over 2 mph was too 
much. This limited spraying hours so severely that it was hard to cover very 
many acres in a timely manner.

Bill Fleming
Montana State University
Western Ag Research Center
580 Quast Lane
Corvallis, MT 59828

From: apple-crop-boun...@virtualorchard.net 
[mailto:apple-crop-boun...@virtualorchard.net] On Behalf Of Matt Pellerin
Sent: Thursday, October 30, 2014 7:21 AM
To: Apple-crop discussion list
Subject: [apple-crop] Mankar Ultra-Low Volume Herbicide Applicators

I have been researching different options for herbicide application in my 
orchard and came across Mankar ULV herbicide applicators.  
http://www.mankarulv.com/  The company promotes its shielded CDA applicators as 
virtually drift-free.  However, I have read in some apple publications that the 
small droplets made by CDA applicators are inherently prone to drift.  Does 
anyone have any clarifying information or experience with this equipment?

Thanks,
--
Matthew Pellerin
Agricultural Manager
Treworgy Family Orchards
3876 Union St
Levant, ME 04456
www.treworgyorchards.com<http://www.treworgyorchards.com>
207-884-8354
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Re: [apple-crop] Mankar Ultra-Low Volume Herbicide Applicators

[dmnorton]

We have a single head Enviromist mounted to our small John Deere tractor that 
we have used for several years with no issues at all.  The keys are how high 
you allow your weeds to get before application and how high you have to hold 
the shield above the ground.  The higher the shield above ground, the greater 
likelihood of drift.

Dennis Norton
IPM Specialist/Certified Nurseryman
Royal Oak Farm Orchard
15908 Hebron Rd.
Harvard, IL 60033-9357
Office (815) 648-4467
Mobile (815) 228-2174
Fax (609) 228-2174
http://www.royaloakfarmorchard.com
http://www.royaloakfarmorchard.blogspot.com
  - Original Message - 
  From: Matt Pellerin 
  To: Apple-crop discussion list 
  Sent: Thursday, October 30, 2014 8:21 AM
  Subject: [apple-crop] Mankar Ultra-Low Volume Herbicide Applicators


  I have been researching different options for herbicide application in my 
orchard and came across Mankar ULV herbicide applicators.  
http://www.mankarulv.com/  The company promotes its shielded CDA applicators as 
virtually drift-free.  However, I have read in some apple publications that the 
small droplets made by CDA applicators are inherently prone to drift.  Does 
anyone have any clarifying information or experience with this equipment?



  Thanks,
  -- 

  Matthew Pellerin
  Agricultural Manager
  Treworgy Family Orchards
  3876 Union St
  Levant, ME 04456

  www.treworgyorchards.com

  207-884-8354


--


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[apple-crop] Mankar Ultra-Low Volume Herbicide Applicators

[Matt Pellerin]

I have been researching different options for herbicide application in my
orchard and came across Mankar ULV herbicide applicators.
http://www.mankarulv.com/  The company promotes its shielded CDA
applicators as virtually drift-free.  However, I have read in some apple
publications that the small droplets made by CDA applicators are inherently
prone to drift.  Does anyone have any clarifying information or experience
with this equipment?

Thanks,
-- 
Matthew Pellerin
Agricultural Manager
Treworgy Family Orchards
3876 Union St
Levant, ME 04456
www.treworgyorchards.com
207-884-8354
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