Re: [apple-crop] Mankar Ultra-Low Volume Herbicide Applicators
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 -- ___ 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] Mankar Ultra-Low Volume Herbicide Applicators
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 m...@treworgyorchards.commailto: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.comhttp://www.treworgyorchards.com/ 207-884-8354 ___ 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] Mankar Ultra-Low Volume Herbicide Applicators
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 da...@cornell.edu 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 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 ___ 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 -- Matthew Pellerin Agricultural Manager Treworgy Family Orchards 3876 Union St Levant, ME 04456 www.treworgyorchards.com 207-884-8354 ___ apple-crop mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
Re: [apple-crop] Mankar Ultra-Low Volume Herbicide Applicators
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 ___ 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 mailing list apple-crop@virtualorchard.net http://virtualorchard.net/mailman/listinfo/apple-crop
