Re: Apple-Crop: AI nozzles for airblast sprayers
Big help. Thanks very much. Pretty much how I was approaching it. Art Kelly - Original Message - From: Deveau, Jason (OMAFRA) To: apple-crop@virtualorchard.net Sent: Friday, April 02, 2010 11:00 PM Subject: Re: Apple-Crop: AI nozzles for airblast sprayers Hi Arthur, I was recently at an apple meeting in Quebec. One presentation summarized a series of international papers comparing conventional disk - core nozzles to air induction in airblast orchard applications. Efficacy was par across the board. I also have it on good authority that ai works well in grapes, too. You'll need to increase your pressure to match nozzle manufacturer specifications. As a rule of thumb, they require about twice the pressure versus a standard nozzle. Generally about 80 psi, but be sure to check the specs and try to operate them in the middle of their pressure range. Gallons per acre shouldn't change. Spray the rate and volume that's worked for you in the past. Nozzling your sprayer with ai nozzles is the same process as with any other nozzle. Work out your desired output for one boom and divide by the number of nozzles. As for row spacing and tree size, again, you should spray the volume and rate that's worked in the past using conventional nozzles - your method needn't change. Again, these are just rules of thumb, but try not to drive faster than 5 km per hour and don't spray less than 500 litres per hectare. Penetration and coverage suffer, respectively, if you push these limits. Does this help? Cheers, Jason Deveau - Application Technology Specialist - OMAFRA -- Sent using BlackBerry -- From: apple-crop@virtualorchard.net apple-crop@virtualorchard.net To: Apple-Crop apple-crop@virtualorchard.net Sent: Fri Apr 02 20:14:55 2010 Subject: Apple-Crop: AI nozzles for airblast sprayers Hi all, I am considering switching over to air induction nozzles for my orchard sprayer. What is the experience so far in terms of pressure, gallons per acre, the effect of row spacing and tree size etc? Does anyone have any suggestions? Art Kelly Kelly Orchards Acton, Me
Re: Apple-Crop: AI nozzles for airblast sprayers
I have about 1/3 24' rows. 1/3 18' rows and the last 1/3 are 15' rows. What pressure and GPA do you operate at Mo? Thanks, Art - Original Message - From: Mo Tougas m...@tougasfarm.com To: Apple-Crop apple-crop@virtualorchard.net Sent: Saturday, April 03, 2010 6:37 AM Subject: Re: Apple-Crop: AI nozzles for airblast sprayers Hi Art We've been using the Albuz and spraying systems AI nozzles for several seasons now. We'd been using them for herbicides and for spraying strawberries for years and were quite satisfied. Two years ago we started using them in airblast sprayers. We've found that they are a bit limited there. The droplets are heavy, and we feel that 16' row spacing is about as far as we can go and get uniform overage. Past that, and pattern has not been satisfactory. I'd suggest caution. Use a couple in the top positions on your sprayer, and be sure to use water sensitive paper in your trees to be sure you are happy. Mo Tougas Tougas Family Farm,LLC Northborough, MA On Apr 2, 2010, at 8:14 PM, Arthur Kelly wrote: Hi all, I am considering switching over to air induction nozzles for my orchard sprayer. What is the experience so far in terms of pressure, gallons per acre, the effect of row spacing and tree size etc? Does anyone have any suggestions? Art Kelly Kelly Orchards Acton, Me -- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content. -- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content.
Re: Apple-Crop: AI nozzles for airblast sprayers
We are using a sprayer controller, and so the pressure varies block to block depending upon row spacing, speed, tree height, etc. That is of course where the challenge lies, finding nozzles that will deliver over a range of pressures to meet the mix of training systems we have. So the range is 75 psi to 200 psi. To my dismay, we spray at 50 or 100 gpa, depending on what material we are spraying. We'd like to be doing a better job of using TRV, but when we add the complications of guessing the intents of some of the label rates, together with our mishmash of plantings, we're settling in at rate per acre, regardless of the acre. Someday we will have the technology to read the tree's canopy in terms of density, and we'll do a better job. Mo Tougas On Apr 3, 2010, at 10:43 AM, Jill Kelly wrote: I have about 1/3 24' rows. 1/3 18' rows and the last 1/3 are 15' rows. What pressure and GPA do you operate at Mo? Thanks, Art - Original Message - From: Mo Tougas m...@tougasfarm.com To: Apple-Crop apple-crop@virtualorchard.net Sent: Saturday, April 03, 2010 6:37 AM Subject: Re: Apple-Crop: AI nozzles for airblast sprayers Hi Art We've been using the Albuz and spraying systems AI nozzles for several seasons now. We'd been using them for herbicides and for spraying strawberries for years and were quite satisfied. Two years ago we started using them in airblast sprayers. We've found that they are a bit limited there. The droplets are heavy, and we feel that 16' row spacing is about as far as we can go and get uniform overage. Past that, and pattern has not been satisfactory. I'd suggest caution. Use a couple in the top positions on your sprayer, and be sure to use water sensitive paper in your trees to be sure you are happy. Mo Tougas Tougas Family Farm,LLC Northborough, MA On Apr 2, 2010, at 8:14 PM, Arthur Kelly wrote: Hi all, I am considering switching over to air induction nozzles for my orchard sprayer. What is the experience so far in terms of pressure, gallons per acre, the effect of row spacing and tree size etc? Does anyone have any suggestions? Art Kelly Kelly Orchards Acton, Me -- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content. -- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content. -- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content.
Re: Apple-Crop: AI nozzles for airblast sprayers
Mo: You must get some pretty interesting results with thinners applied at a constant active ingredient per acre! David Kollas Kollas Orchard, Tolland, CT On Apr 3, 2010, at 6:56 PM, Mo Tougas wrote: We are using a sprayer controller, and so the pressure varies block to block depending upon row spacing, speed, tree height, etc. That is of course where the challenge lies, finding nozzles that will deliver over a range of pressures to meet the mix of training systems we have. So the range is 75 psi to 200 psi. To my dismay, we spray at 50 or 100 gpa, depending on what material we are spraying. We'd like to be doing a better job of using TRV, but when we add the complications of guessing the intents of some of the label rates, together with our mishmash of plantings, we're settling in at rate per acre, regardless of the acre. Someday we will have the technology to read the tree's canopy in terms of density, and we'll do a better job. Mo Tougas On Apr 3, 2010, at 10:43 AM, Jill Kelly wrote: I have about 1/3 24' rows. 1/3 18' rows and the last 1/3 are 15' rows. What pressure and GPA do you operate at Mo? Thanks, Art - Original Message - From: Mo Tougas m...@tougasfarm.com To: Apple-Crop apple-crop@virtualorchard.net Sent: Saturday, April 03, 2010 6:37 AM Subject: Re: Apple-Crop: AI nozzles for airblast sprayers Hi Art We've been using the Albuz and spraying systems AI nozzles for several seasons now. We'd been using them for herbicides and for spraying strawberries for years and were quite satisfied. Two years ago we started using them in airblast sprayers. We've found that they are a bit limited there. The droplets are heavy, and we feel that 16' row spacing is about as far as we can go and get uniform overage. Past that, and pattern has not been satisfactory. I'd suggest caution. Use a couple in the top positions on your sprayer, and be sure to use water sensitive paper in your trees to be sure you are happy. Mo Tougas Tougas Family Farm,LLC Northborough, MA On Apr 2, 2010, at 8:14 PM, Arthur Kelly wrote: Hi all, I am considering switching over to air induction nozzles for my orchard sprayer. What is the experience so far in terms of pressure, gallons per acre, the effect of row spacing and tree size etc? Does anyone have any suggestions? Art Kelly Kelly Orchards Acton, Me - - The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content. - - The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content. -- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content. -- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content.
