Spray Technology for the 21st Century
The On Target Line
We offer a wide range of spray systems for nearly any kind of crop.
Our sprays can be individually converted to fit narrow to wide rows with manifolds and stainless steel booms that can be adjusted for the perfect spraying angle.
Each is outfitted with a patented spray nozzle that creates a fine mist of positively-charged uniform droplets and uses a quiet Kaeser blower with stainless rotary lobes rather than a noisy vein fan.
On Target continually develops new sprayers specific to different crop industries. If you have a question about which sprayer is right for you, please contact us at (503) 996-1101 for more information. No matter your requirements, we have the sprayer for you.
On-Target sprayers are designed and fabricated in California. The stainless steel construction is compact and of the highest quality. With this design comes flexibility; unlimited adjustment capabilities for single - or double - row, running parallel with any trellis system for uniform coverage.
On Target offers a wide range of spray systems with harvester conversion packages specific to the wine industry. No matter your requirements, we have the sprayer for you.
- 1 ROW 50G VINEYARD/TABLE GRAPE SPRAYER WITH 2-4 MANIFOLDS
- 1 ROW 100G VINEYARD/TABLE GRAPE SPRAYER WITH 4 MANIFOLDS
- 2 ROW 100G VINEYARD SPRAYER WITH 8 MANIFOLDS AND 2 HYDRAULIC FOLDING BOOMS
- 1 ROW 50G ATV/RTV CUBE VINEYARD/TABLE GRAPE SPRAYER WITH 4 MANIFOLDS
- 1 ROW 200G VINEYARD/TABLE GRAPE SPRAYER WITH 4 MANIFOLDS
- 1 ROW 300G VINEYARD/TABLE GRAPE SPRAYER WITH 4 MANIFOLDS
- 2 ROW 200G VINEYARD/TABLE GRAPE SPRAYER WITH 8 MANIFOLDS AND OVER-THE-ROW 5 FUNCTION HYDRAULIC FOLDING BOOMS
- 2 ROW 200G VINEYARD/TABLE GRAPE SPRAYER WITH 12 MANIFOLDS AND OVER-THE-ROW 5 FUNCTION HYDRAULIC FOLDING BOOMS
- 2 ROW 300G VINEYARD SPRAYER WITH 8 MANIFOLDS AND OVER-THE-ROW 5 FUNCTION HYDRAULIC FOLDING BOOMS
- 2 ROW 300G VINEYARD SPRAYER WITH 12 MANIFOLDS AND OVER-THE-ROW 5 FUNCTION HYDRAULIC FOLDING BOOMS
Harvest conversion packages
- 4 ROW GRAPE HARVESTER CONVERSION PACKAGE
- 3 ROW GRAPE HARVESTER CONVERSION PACKAGE
Sprayer for the small grower
The Cube™ is designed for small growers with five to eight acres. The 50-gallon Cube is perfect for attaching to an ATV for fitting through narrow rows. It features a quiet German-made Kaeser Tri-lobe rotary blower and the low fuel consumption Honda V-twin engine. It weighs in at only 540 pounds, which helps in keeping from compacting the soil.
Its four manifolds are attached to ball swivel-clamps for a wide range of adjustment angles of left and right spray patterns. Manifolds can be removed or turned on and off depending upon the spray requirements.
Fifty gallons can cover up to an entire eight-acre vineyard with a low-volume application making it highly efficient.
Dimensions: 36" x 36" x 24"
Weight: 540 lbs.
Tank: 50 gallon
Engine: Honda V-twin
Fan: Kaeser Tri-lobe rotary blower
Manifolds: Four attached to ball swivel-clamps
Read the New Electrostatic Sprayers for 2012 article, featuring The Cube™.
Spray Technology for the 21st Century
Innovative technology at work
On Target spray systems utilize the natural power of attraction. Our sprayers feature the On Target patented spray nozzle that uses an electrical charge to create a fine mist of uniform, electrostatic droplets. Since all droplets have the same charge, they repel each other, creating a fine spray mist less prone to runoff and coalescence. The opposite charges of the plant attract the particles to it, drawing the spray deep inside the plant's canopy. Once the plant is fully and evenly covered in spray, the surface charges even out, resulting in complete, uniform coverage.
On Target sprayers are the ideal tool for sustainable agriculture.
On Target's electrostatic technology minimizes drift and runoff while utilizing the power of materials to their full potential, making our sprayers environmentally sound, socially equitable and economically viable. The effectiveness of the spray technology also means decreased applications and decreased fuel use. By reducing materials, water and labor costs, On Target Spray Systems help you save green whilestaying green.
On Target over the row, two row vineyard sprayer
This has been a very popular machine with 100 and 300 gallon models available.
On Target 56 gallon single row vineyard sprayer.
Slim and trim vineyard sprayer for the smaller grower or those who need to get into the vineyard a little early. Less compaction with excellent coverage.
On Target over the row, two row vineyard sprayer - 300 gallon model
Studio photo of our fashionable 300 gallon two row vineyard sprayer
On Target 30 gallon ATV Vineyard Sprayer
An excellent sprayer for narrow rows with the coverage growers have come to expect from On Target Spray Systems.
On Target Savings Calculator
An example of savings experienced by switching to On Target Sprayers. Some growers save enough to pay for their sprayers in two seasons of use.
On Target Production Load Leads to New Hire.
24 March, 2015
We are fortunate to have hired a new On Target member for production. It's not always a simple thing to find a team member who fits right in on day one. Ed Oliver is one of those people. Talented, genial and an overall good guy. The family atmosphere at On Target Spray Systems is one of our keys to efficiency; communication and companionable camaraderie. Welcome to the family, Ed.
Defy the law of Gravity with the Power of Electrostatic Attraction Spray - Save - Be Happy
10 October, 2014
It's time to order the On Target Sprayer you have been so curious about.
Yes, they are as efficient and well built as you have heard; saving time and money, made from the highest quality components. Built start to finish in our facility in Beautiful Mt. Angel, Oregon.
Vineyard Sprayers are available as 50 Gallon ATV models, 100 Gallon Three Point models and 300 Gallon Pull Behind models. Single Row or Over the Row.
Do you grow another crop? Blueberries, Strawberries, Cane Berries, Table Grapes or Orchard? Our product line has grown as 'word of mouth' testimonials have worked their way down the 'Grape Vine' (So to Speak).
Give us a ring or drop us a line. We love giving demonstrations!
On Target Sprayers transitioning to South American Market for the summer.
10 July, 2014
While we still assemble 'on demand' sprayers for North America and Mexico, our South American customer list continues to grow. This year has seen a dramatic increase in sales from Peru while Chilean sales have remained steady.
The shop remains busy with last minute US sprayer orders, the growing demand for vineyard and orchard sprayers in Washington as well as a leap in Blueberry sprayer demand in the Pacific Northwest. Love those anti-oxidants.
On Target Spray Systems' electrostatics - Highlight of the Oregon State University Field Day
10 July, 2014
Insecticide Application Techniques to Manage Spotted Wing Drosophila in Oregon Berries
Insecticides are the most widely used tools for spotted wing drosophila (SWD) management in berries, targeting egg-laying females. Most growers spray 2-10 times during the busy harvest season. Production costs directly attributed to SWD management have significantly increased and ranges from 5-10% of the total farmgate value of fruit. We believe that insecticides will be the primary technique for SWD management at least for the next 5-10 years. Currently, growers use a range of application techniques; herein we present various options with associated spray costs and potential SWD damage risk.
Many growers use airblast sprayers (picture on right) which provide good coverage if used appropriately. Water volume rates for berry crops typically range from 50-100 gal/A. Airblast sprayers generate large air movement, which aids in delivering the compound onto the plant surface areas. These sprayers require a minimum horsepower, which results in slightly higher fuel costs. Currently, sprayer costs are estimated at $37/A and chemicals are $50/A per application. Generally, this technique is perceived as the standard.
Several growers in the Willamette Valley have adopted electrostatic sprayers in recent years. These sprayers produce fine insecticide droplets at low air pressure. The droplets are charged as they exit the nozzle and because of this charge, move to cover plant surfaces at a volume of 15 gal/A. Thus, the fine droplets are highly concentrated. This method uses less water, power, time and labor. Growers have reported good success using these sprayers during 2013. Effect on insecticide MRLs using this method is unknown.
Alternate-row (AR) sprays in raspberries
Reduced insecticide spray strategies may mitigate production challenges and result in reduced input costs. Here various spray techniques can be used. One such strategy is alternate-row (AR) sprays, which has been practiced in apple orchards since the 1970s on mobile insects (e.g., plum curculio). In AR sprays, the applicator would skip a row so that only one side of each planting row was treated. The subsequent AR application would treat the previously un-sprayed row (i.e., after 2 applications both sides of each planting row were treated). The same rate and volume as full cover sprays (i.e., same a. i. coverage on entire field delivered at two separate applications) is typically used in AR. This strategy was tested at multiple raspberry farms in the Willamette Valley from 2011 to 2013 using the high-label insecticide rate and maximum spray pressure.
No statistical differences between mean adult and larval SWD captured in AR and conventional plots were detected. Another advantage of these spray techniques may be reduced impact on beneficial insects and less chance of secondary pest resurgence. Stethorusspp., a natural enemy of spider mites, and Psylloboraspp., a natural enemy of powdery mildews, were conserved in AR plots. This method is slightly riskier than the conventional method, because the insecticide coats a lower proportion of plant materials compared to the methods described above.
Border sprays in blueberries
Another reduced insecticide application strategy is border sprays. Insecticides are applied to crop plants in the field border using a cannon sprayer (picture on right) at the same volume and rate as conventional sprays while leaving the center untreated. Border sprays are typically effective against pests migrating into the field from field margins or are “edge oriented” colonizers (e.g., apple maggot, codling moth). This strategy was tested at a ‘Liberty’ blueberry farm in the Willamette Valley from 2012 to 2013.
No statistical differences between mean adult and larval SWD captured in border spray and conventional plots were detected. As in AR, Stethorusspp., were conserved in border spray plots. The amount of fruit knocked down in the field by the spray equipment was greater in conventionally sprayed plots treated with a vertical-boom sprayer. This method is riskier than conventional sprays because the insecticide coats a lower proportion of plant materials compared to the methods described above. In a high-pressure SWD year (i.e., mild winter and ideal spring temperatures), conventional sprays may need to be integrated with border sprays.
Methods discussed here can be combined i.e. an electrostatic sprayer may be used to apply alternate rows. Producers can decide to change AR applications to full cover applications if SWD pressure is perceived to be high. Logistics associated with harvest and the use of electrostatic sprayers, AR and border sprays were not considered in this analysis. These logistical benefits may be an added advantage that may come into play when considering these alternative spray techniques.
Table 1. Seasonal comparative costs of 6 electrostatic scenarios, alternate-row middle (AR) and border sprays to conventional sprays.
Boom config. (# of rows)
% rate used/A
1 (alternate rows)
5 (border rows)
Note: 10 sprays to 200 A (12 sprays to 300 A for Electro. 6); $3.80 per gal fuel; $50 material per A; $18 labor per hr; 300 gal tank; 3 mph speed. Savings estimated by On Target Spray Systems and OSU Berry Economics Extension Bulletins. Does not include depreciating values of machinery.
*Includes savings from reduced fruit knockdown.
Jimmy Klick: email@example.com, (847) 650 1224
Vaughn Walton: firstname.lastname@example.org, (541) 740 4149
Wei Yang: email@example.com, (503) 704 4031
Electrostatic sprayer: On-Target Sprays: http://www.ontargetspray.com/, Willie Hartman, (503) 329 8120
Cannon Sprayer: Jacto Inc: http://www.jacto.com/, Bertil Albing, (503) 709 4798, firstname.lastname@example.org
Thanks to Bernadine Strik and Amanda Vance for assistance.
On Target Spray - The Dynamic Duo
10 April, 2014
On Target 56 Gallon ATV Sprayers Hits the price point and appeal for the smaller grower or narrow row vineyards. Smaller yet is the 30 Gallon ATV pull behind. Check out our Dynamic Duo.t.
On Target Spray Systems uses 80% less water than traditional sprayers.
19 February, 2014
Using 80% less water for your spray program is nothing to take lightly; especially this year. On Target Spray Systems' wine grape sprayers use 80% less water over traditional sprayers. How much water do you use? How much water could you save?
Besides the water savings, On Target Spray Systems gets the best coverage in less time, using less material. - To really understand the coverage, you need to see and experience a demonstration. Find On Target at the WiVi Central Coast Wine and Viticulture Symposium and Tradeshow, Booth B71. Our demonstration will knock your socks off - well, not really, but it is quite impressive.
On Target attending Pacific Agriculture Show
14 January, 2014
On Target Spray Systems is attending, for the first time, the Pacific Agriculture Show in Abbotsford, BC. January 30 through February 1, 2014. It has been a tremendous trade show season and we look forward to meeting our enthusiastic followers in the Vancouver, BC vacinity. Look for us in Booth 1157.
On Target is gearing up!
17 December, 2013
On Target Spray Systems is gearing up for a busy 2014. We've added sales people, office staff and ordered in a mountain of all the bits and bobs that Vineyard growers depend upon to keep their On Target sprayers up to snuff.
The sooner you get your sprayer order in, the sooner we can get cracking on the sprayer of your dreams.
Save time, money and material with On Target Spray Systems.
On Target Spray Systems Introducing Electrostatic Vineyard Sprayer to Australian Growers
06 December, 2013
New On Target 300 Gallon Two Row Vineyard sprayer up and running in South Australia.
Electraspray, an On Target Representative in Adelaide, South Australia, has recently imported a New On Target 300 Gallon Two Row Vineyard Sprayer to be delivered to a local grower. Inquiries can go to email@example.com
Winnnovation Award granted to On Target Spray Stystems
12 November, 2013
On Target Spray Systems has been selected as a recipient of the 2013 Winnovation Award. All of us at On Target are grateful to the collaboration of Wine Industry Network and their North Coast Wine Industry Expo. We continually work to improve our product and provide the most efficient sprayer on the market.
Now Announcing - New Hires for Washington and California
03 November, 2013
On Target Spray Systems has welcomed two new Technical Sales Representatives to the family.
Shannon Azure is the On Target specialist in the beautiful state of Washington; facilitating development our new line of Orchard sprayers as well as introducing the Washington vineyards to the extensive line of Vineyard sprayers.
Neil Knaack is joining Gary Soares as our On Target specialist in California; providing technical sales expertice and excellent customer service.
Together, Shannon and Neil add years of field experience to the On Target Team. To set up a meeting or demonstration with either representative, please call 503-329-8120 or email firstname.lastname@example.org
On Target - Do More / Use Less and Sample the Savings with our On Target Spray Systems Savings Calculator.
21 October, 2013
The precision of On Target Spray Systems means saved time, fuel and money. Check out this example of our Savings Calculator and call us for a calculation on how much you and your farm can save with On Target Spray Systems.
Call (503) 329-8120 for your custom savings calculation.
New Hire at On Target Spray Systems
25 September, 2013
On Target is happy to announce the addition of Mr. Shannon Azure to our Technical Sales Team. Shannon is representing On Target Spray Systems in the beautiful state of Washinton as well as parts of Oregon.
Sulfur-free in Alexander Valley
12 October, 2011
By Mark Greenspan | Practical Winery & Vineyard
This article does not imply an endorsement of any practice or products from Mark Greenspan or Advanced Viticulture, Inc.
Sulfur has not been applied in the vineyards managed by Jim Cuneo, assistant vineyard manager, during the past eight years. He does not miss it one bit. Cuneo manages the pesticide program on 317 planted acres in the Alexander Valley for Robert Young Vineyards (Geyserville, CA).
A presentation by an agricultural chemical distributor early in 2001 piqued Cuneo's interest in using JMS Stylet-Oil for powdery mildew control. Previously, micronized sulfur was applied at a rate of two pounds per acre per application.
Polaris 6x6 ATV pulls 100-gallon
sprayer in valley floor vineyard.
Cuneo and Jim Young (owner), were interested in reducing or eliminating dusting sulfur to control powdery mildew disease, out of concerns by winemakers of sulfur residues in their grapes. Jim Young set a goal in 2000 to eliminate all dusting sulfur, due to concerns about drift when sulfur-dusting. Not to mention that Cuneo is somewhat sensitive to sulfur as are members of the vineyard-crew. This is a situation that many of us are in, but tend to keep quiet about it, thinking that sulfur is just a fact of life in vineyard management.
JMS Stylet-Oil is a highly refined mineral oil that controls powdery mildew disease by smothering the fungus, Uncinula necator, which causes the disease. The product is very simple - just the oil along with emulsifying materials. There are both organic (listed by the Organic Materials Review Institute) and non-organic formulations of JMS Stylet-Oil. For grapes, it can be applied as a 1% to 2% emulsification with water.
Dr. Doug Gubler, Extension Plant Pathologist at U.C. Davis, has compared Stylet-Oil against sulfur and other chemical fungicides and found Stylet-Oil to be highly effective when used at a 14-day interval at a 2% concentration. Cuneo chose to use it at the lowest recommended concentration (1%) at a rate of 30 gallons of water spray per acre.
"Many oils are registered including OMNI oil and SAF-T-CIDE," says Gubier. "However, even through these work, they have higher phytotoxicity risks. A new product very similar to JMS Stylet-Oil is "Green" that works just as well and is also highly purified."
First trial in 2001
While mineral oil provides an opportunity to reduce or eliminate sulfur application, Robert Young Vineyards has a strict zero-tolerance policy on powdery mildew, so they did not want to take the plunge into mineral oil before testing it. JMS Stylet-Oil was applied in the 2001 growing season in a 20-acre block of Chardonnay, which had a history of being a bit of a problem with regard to powdery mildew.
Robert Young Vineyards began using a two-row 200 gallon ON Target sprayer in 1995. ON-Target spray manifolds produce billions of electrically-charged drops that are attracted to the vines, resulting in excellent coverage and uniformity. Spraying two rows at 15 to 30 gallons per acre allows two to three times more acres to be sprayed in a day. For more information visit www.ontargetspray.com.
"Beginning at budbreak, we applied the material at 14-day intervals, adding copper to the spray tank for the first three passes in the growing season," explains Cuneo. "Copper provides additional mildew control, and helps with frost protection. After the first three applications and up through veraison, JMS Stylet-Oil was mixed with a rotation of systemic demethylation (sterol) inhibitors (DMI's) or maintaining a 14-day application interval."
They have two Adcon weather stations that monitor weather and canopy conditions on the ranch. The data is entered into the UC Davis Powdery Mildew Risk Assessment Model that determines the risk of mildew infection based on the pathogen's reproductive rate. The model allows Cuneo to decide if and for how long to stretch spray intervals. However, Cuneo feels the 14-day interval has worked well as a rule of thumb and that it facilitates manpower and equipment scheduling.
In other vineyard blocks that did not receive oil applications, the fungicides were mixed with elemental (micronized) sulfur materials at 2 pounds per acre, per their standard practice. The result: no mildew problems in the test block. Nor were there any mildew problems in the sulfur-treated blocks, indicating that the mineral oil performed as well as the sulfur did that season.
2002: Expansion to larger acreage
Their positive experience in 2001 led them to expand their no-sulfur program to all of the vineyard acreage at one property on the east side of Alexander Valley. The 67-acre ranch has Merlot, Chardonnay, and Syrah and includes the original 20-acre trial block. It was largely successful that year. there were some powdery mildew outbreaks in many of their vineyards that year, regardless of whether sulfur or mineral oil was applied.
"Outbreaks consisted of a cluster or berry here and there," reports Cuneo, "and an occassional vine where many clusters were infected." Bottom line: JMS Stylet-Oil performed at least as well as the sulfur did in 2002.
Crawler tractor pulls Rears sprayer in hillside
vineyards. All photos by Jim Cuneo.
A lightweight spray rig was purchased to allow all-season access with less soil compaction. They purchased a Rears 100-gallon sprayer (which they generally do not fill completely to reduce the weight). They customized an over-the-row boom to adjust for 6-foot or 8-foot tractor-row spacings. Two of these sprayers are used today, each pulled by a Polaris 6x6 all-terrain vehicle (ATV).
The Rears sprayers can cover two rows in one pass. They are pulled with either a six-wheel Polaris ATV with tracks in valley floor vineyards or with a crawler tractor on hillside vineyards. These sprayers are used up until 18 inches of shoot growth.
They switch to a 200-gallon electrostatic sprayer (for the valley floor vineyards) with On-Target nozzle assemblies, which can be adjusted to spray only the extent of the vine growth at that time of year. the manifolds are adjusted to spray only the extent of foliage and a wider band as shoot growth continues. Cuneo has been very pleased with the coverage that this nozzle arrangement has provided. They began using an On-Target sprayer in 1995 and upgraded the system in 2001.
2003-2005: No more sulfur
Success in their trials led them to expand mineral oil application to the entire vineyard acreage. The previous wettable sulfur and fungicide program was substituted with JMS Stylet-Oil and fungicide applications in 2003.
Cuneo reports a complete success. Not a miracle, mind you; they still have some spot outbreaks of powdery mildew, which they deal with by dropping fruit or by washing with Kaligreen. (In retrospect, the oil could have been used as an eradicant "wash" instead of applying Kaligreen.) But that had been their experience with sulfur also. Net gain: no sulfur drift, no respiratory irritation, and no sulfur residue on the fruit.
Benefits beyond mildew control
While the goal of using mineral oil was control of powdery mildew, the product also has beneficial insecticidal properties. Pacific mites had been a problem in many of their blocks, usually requiring one or two applications of miticide for control. In the 2001 trial block, mites were not a problem where treated with mineral oil and that block required no miticide treatment, unlike some of the sulfur-treated blocks, some of which did require miticide applications.
In the years preceding the trial, agrimek and/or Nexter were needed as applied twice to control mites, 100 acres being treated in 2001 and 30 acres in 2002. In subsequent years, when mineral oil was used in all of their vineyards, it was found that mite populations were much less of a concern compared to previous experiences.
There were some mite hotspots in 2003 and in 2005 (but none in 2004) which required one or two miticide applications. Twelve acres required miticide treatment in 2003 and 50 acres in 2005. But the hotspots were well-defined and the mite infestations less severe than in previous experiences or in comparison to what their neighbors encountered during those same episodes.
Although it appeared that JMS Stylet-Oil seemed to have some suppressive effect on mite populations, they wanted to know if it could be relied upon for that purpose. They tested this by applying mineral oil at a 2% rate on a few mite-infested rows in 2005. To their dismay, it did not suppress the population sufficiently to justify use as a miticide. However, they remain encouraged that it helped to reduce their overall need for miticides in the vineyards.
Another benefit found was that of leafhopper suppression. The mineral oil suppressed populations of leafhoppers, minimizing the need for a pre-harvest application of Provado.
Downside to mineral oil
There are caveats to mineral oil application - sulfur cannot be applied within 14 days of JMS Stylet-Oil application or vice versa, or any potential hot weather that could toast the leaves to a crispy crunch. That is clearly stated on the product's label.
With or without sulfur, spraying in hot weather can cause over-heating and burn of oil-treated foliage. Cuneo's crew begins spraying at midnight and continues until morning in order to apply the material under the coolest conditions. Spraying is halted at 11 am, or earlier if the temperature reaches 800F as a precaution.
Cuneo reports using the lowest recommended concentration (1%) in their spray, and he thinks that the lower concentration helps to avoid heat-related foliar damage. He has seen no foliar damage in their oil-treated vineyards with temperatures into the 90's when spraying is has been halted before 800F is reached.
Another minor downside to mineral oil was that spray volume by electrostatic sprayer increased 50%, from 20 gallons per acre to 30 gallons per acre. This would necessitate more spray-tank refills, but did not seem to be a serious issue to Cuneo. Also, material cost is somewhat higher with mineral oil than sulfur. Cuneo's material costs increased about $1.50/acre per application when changing from micronized sulfur to JMS Stylet-Oil. Growers using a higher rate of sulfur than two lbs per acre will see less of an increase in material cost.
Cuneo mentions another downside to using mineral oil - it tends to coat some of the waxy bloom on berries, giving it the appearance of having water spots. Neither he nor the winemaker are concerned about this cosmetic effect. In his lab, Dr. Gubler found that the presence of residual oil had no negative effects on yeast growth during fermentation.
It appears that, for Jim Cuneo and Robert Young Vineyards, the advantages of using JMS Stylet-Oil for mildew control far outweigh the negatives.
NOTE: While Robert Young Vineyards has shared their positive experience with using JMS Stylet-Oil for powdery mildew control, there is no expressed or implied recommendation for its use. Please conduct your own investigation and experimentation before embarking on a similar program.
Dr. Mark Greenspan is the founder of Advanced Viticulture LLC (Santa Rosa, CA) [www.advancedvit.com] providing consulting services to wineries, winemakers and winegrowers interested in producing premium wine products. He has over two decades of scientific research and viticultural experience, and specializes in irrigation and nutrition management, yield and canopy management, fruit maturation and vineyard technology. He may be contracted at email@example.com or tel: 707-838-3805.
For more information on disease control and fermentation, and sulfur residue and wine quality, readers are invited to pursue the following research published by Dr. Doug Gubler and cooperating researchers:
1. 1997 Dell, K.J., W.D. Gubler, R. Krueger, M. Sanger, and L.J. Bettiga. "The efficacy of JMS Stylet oil on grape powdery mildew and Botrytis bunch rot and effects on fermentation." Am. J. Enol. & Vitic. 49(1): 11-16.
2. 1993 Thomas, C.S., R.B. Boulton, M.W. Silacci, and W.D. Gubler. "The effect of elemental sulfur, yeast strain, and fermentation medium on hydrogen sulfide production during fermentation." Am. J. Enol. & Vitic. 44(2):211-216.
How It Works
On Target sprayers utilize the law of attraction. Our sprayers feature the On Target patented spray nozzle that uses an electrical charge to create a fine mist of uniform, electrostatic droplets.
DROPLETS ARE CHARGED
A small charge is passed through the liquid as it exits the nozzle, making positively-charged droplets.
OPTIMIZED DROPLET SIZE
On Target droplets are 30- to 50-microns in size rather than 250-micron of a typical air blaster.
BOND WITH CROP
The positively-charged droplets repel one another but are attracted to the negatively-charged plants.
Chemicals reach behind and under leaves, providing complete coverage of your crops, inside and out.
Use Less. Do More.
The precision of On Target Spray Systems means saved time, fuel and money. It also means higher yielding crops and better-looking fruit.
Sample the Savings
Larger fruit, better yield
Many factors impact the quality of the fruit you produce. One of those factors is the effectiveness of your spraying program. Conventional sprayers create a random mist that covers parts of fruit but not others. This wastes expensive chemicals and severely limits their performance.
On Target Spray Systems create electrostatic, perfectly sized droplets that uniformly cover all sides of the fruit, leaves and vine. These tiny droplets don't run together, greatly reducing runoff and wasted product. The uniform coverage produces a perfectly shaped fruit because the complete coverage allows the chemical to do its job for producing higher quality fruit.
Saving green while being green
On Target Spray Systems are perfectly suited for sustainable agriculture because of their environmental, social and economical benefits. Reduced need for applications and chemicals result not only in environmental benefits but decreased fossil fuels and cost savings as well. Additionally, On Target sprayers are much quieter than conventional sprayers and reduce runoff and drift, making them socially equitable.
A sprayer you can count on
On Target sprayers are built to prevent downtime because we know that downtime not only prevents productivity, but it puts the quality and the viability of your crop at risk. That's why after years of evaluation, testing and improvements, we source all of our components only from the best. So you can count on your On Target sprayer working reliably for years to come.
A sprayer that changes with your crops
Crops grow and change throughout the year. Why shouldn't your sprayer? With an On Target sprayer you are able to limit or add the number of manifolds needed depending on the size of your crop. What's more, the manifolds are attached with ball swivel-clamps, making it easy to move and align in order to adapt to a variety of row and trellis crops.
Marty Hedlund, Vineyard Manager
We have been using the ON-Target electrostatic spray system since 2000 at the Dehlinger Winery. The characteristic that best describes our machine is efficient. Examples of this efficiency include time and deposition/coverage. Time efficiency is measured comparing ON-Target to conventional air-blast sprayers. The 100 gallon tank on the ON-Target equipped sprayer covers 8 acres in full canopy. The 300 gallon tank on our conventional sprayer covers 2.4-3 acres in full canopy. The ON-Target equipped sprayer travels 3.5 mph, 0.5-1.0 mph faster than the conventional sprayer. Turn-around time for filling is greatly reduced and under our conditions ground speed is faster.Deposition and coverage are superior with the ON-Target equipped sprayer. Several elements contribute to these features and include droplet size, air delivery system, and electrostatic charging of the spray. The mist sized droplets are "placed" in the target zone with a compressor or blower and there they stay. It is fascinating to watch the "placed" and electrostatically charged spray migrate to the target, not unlike electrostatic spray painting. A study conducted by California Department of Pesticide Regulation demonstrated that the ON-Target system had significantly better deposition than conventional air-blast or fan delivered sprayers and it is easily observed. Improvedcoverage has been demonstrated by spraying U.V. dye and checking the results with a portable black light—it is overwhelming. An important benefit in addition to the efficiency is that spraying is now one of our quietest machine operations. I am able to spray at night when I am most comfortable and not bother the neighbors. I do the spraying and it is painful to consider disease and pest management without our ON-Target equipped sprayer.
J&L Farms – San Lucas, CA
We have been using the ON-Target electrostatic spray system at J&L Farms for three years. We are currently spraying approximately 3000 acres per season using four sprayers. Our two-row ON-Target sprayers travel 4 mph hour and spray 20 Gallons per acre; we cover 200 acres per day. We use Vintre Oil at a 1% solution applying 20 gallons of water per acre adding pesticides or miticides when necessary. One of the characteristics that best describes our sprayers is efficiency. They are efficient because they save time, reduce water consumption, reduce chemical volume and provide excellent coverage. Due to the low horse power demand of the sprayers (33 PTO) and the ability to drive every other row we are conserving fuel, reducing compaction and extending tractor life. I don’t understand why anyone would want to spray any other way.
Robert Young Vineyards
Jim Cuneo, Manager
"We have always been innovators, but when electrostatic sprayers first showed up, we were not impressed," explained Jim Cuneo. All that changed with the ON-Target electrostatic spray nozzles. Cuneo said he convinced the owners to try the technology on a wide range of problems. "ON-Target's latest version works with almost everything we use, even some of the powdered products," said Cuneo. "I can't even think of a negative to this system." Cuneo has used several versions of the ON-Target nozzles and is now testing his third system. Cuneo uses the equipment on about 200 acres of the vineyard, mainly with white varieties. The ON-Target system gave the vineyard control first of its mildew infestations. "We had no problems this year" said Cuneo. Robert Young Vineyards did not need late-season 'clean-up' sprays for mildew the last two years. Other vineyards had struggled with mildew damage this year. Cuneo tested an oil-based option for mite control as harvest approached on one block of the vineyard, dropping the sulfur application. "It worked so well that we did not have to use any miticides in the second year," he said. Robert Young Vineyards also found they could add a fungicide to the oil application and both remained effective, saving in labor.
Clos du Bois Vineyards
Doug Price, Viticulturist
"We started testing the ON-Target spray nozzles in the 1990's and now have three systems," said Doug Price. We now get better coverage and use less water than in the past," added Keith Horn. "We reduced water use from 50 gallons per acre to 20." Horn also stated that this also reduces labor costs since there are fewer re-fill trips needed. How does Clos du Bois feel about ON-Target's effectiveness? "We are using it for all our fungicides and some insecticides," said Horn. Recently, the vineyard has been very successful controlling powdery mildew, a serious California grape disease. He credits the system's better coverage, even on the leaf's underside, for improving their control of the mildew. They also use the sprayer on their two leading insect pests, the leafhopper and mites, though the latter is not a problem every year. They have seen hopper populations drop 80-90% with ON-Target system's coverage.
Chalk Hill Winery
Kevin Koebsell, Manager
In order to foster better relations with those living close to our operations, we felt it imperative that we minimize both the spray drift and the noise generated by our spraying. The ON-Target sprayer we purchased did both jobs beautifully. Not only was drift virtually eliminated, but the noise of the sprayer could not be heard above the tractor's engine. Couple this with the fact that we have reduced our spray rates by 25-30% as opposed to our conventional sprayers and you have a classic win-win situation.
Jackson Family Wines
Brandon Axell, Manager
We have been very impressed by the spray coverage that is provided with the ON-Target electrostatic system. Progressive Grower Technologies helped us build a full three row sprayer and we are able to cover acreage fast with great spray penetration and low water volume usage. We have used the lower recommended rates with all products and have been successful in having no mildew or botrytis issues. This system is also a plus to use for our neighbor relationships: there is minimal drift potential and noise is basically no louder than the tractor engine.
Michel-Schlumberger Wine Estate
Mike Brunson finds the ON-Target nozzle a perfect fit with their more sustainable approach to growing. "This is exactly the product we were looking for," said Brunson. He is even using the system for materials he never imagined. The first success was controlling diseases such as botrytis, phomopsis, and mildew.
My current operation includes 100 acres of blueberries and I’ve been using an ON-Target sprayer. I spent quite some time looking at sprayers and found that an electrostatic machine would be the most efficient. I researched a number of options and ultimately decided that ON-Target was the best option available. The ON-Target sprayer produces a very fine mist with a consistent droplet. After using traditional spray systems over a number of years on not only blueberries but cherries and other crops, I was frustrated with the machines’ inconsistencies. Regular sprayers produce water droplets of varying sizes which means irregular chemical applications. As a result, you use a higher volume of water and chemicals, which costs time and money. The ON-Target sprayer eliminates that issue by providing a uniform droplet. An added benefit is that the rig itself is very quiet and easy to maneuver, so I’ve been able to use it at night without having issues with neighbors. ON-Target also provides exceptional customer service. A technician came out, helped me set the sprayer up and is willing to come on-site as needed to assist with maintenance and troubleshooting. Overall, the ON-Target sprayer has been the right decision for my operation. I plan on using it next in mandarin grove and expect to see the same consistent performance and reduction in water use and chemicals as I see now with the blueberries.
DB Specialty Farms
DB Specialty Farms grows 730 acres of strawberries in Santa Maria, CA, northern Santa Barbara County. One of our greatest issues has been the inconsistent delivery of water and chemicals to the underside of our strawberry leaves. In our part of the state, we battle the two-spotted spider mite and the underside of the leaf is where these pests reside. Conventional sprayers would create a mist that resulted in deflection off other leaves, but water was not actually hitting the under surface. As a result, in 2008 I spent upwards of $915 per acre in miticides alone. After last season, it was very apparent that I needed to consider other options. We tested the ON-Target sprayers, along with other electrostatic systems. Going with ON-Target became a relatively easy decision given the ease of operation and maintenance, along with the rig’s overall reliable performance. Other electrostatic sprayers required two to three hours of maintenance and cleaning after each use. My crew and I just don’t have that kind of time. In addition, the uniformity of the spray droplets has had a transformational impact on tackling the two-spotted spider mite issue. Not only does the ON-Target sprayer ensure that the miticides reaches the underside of the leaves, but it also uses less chemicals. We had almost a 100% kill rate following our first application using this new sprayer. I honestly can’t say enough good things about it. It really is the best investment we've made in managing the extreme pest pressure we battle every year.
Mesa Vineyard Management - Templeton, CA
Mesa Vineyard Management oversees vineyards all along the Central Coast, in Monterey, San Luis Obispo and Santa Barbara counties. In total, we manage approximately 5,000 acres of winegrapes across the three counties. Six years ago, one of our Shandon growers began using an ON-Target 3-row sprayer and from the very beginning, had nothing but good things to say about the machine. Since then, a number of managers have invested in ON-Target machines. The primary reason for switching was the system's use of ultra-low volumes of water and chemicals in correlation to the ample plant coverage. I currently operate a 300 gallon sprayer that operates at 15 gallons per acre, allowing me to cover 20 acres in one pass as opposed to just 10 acres with a traditional rig. The electrostatic properties are key, making uniform water droplets that adhere to the plants. The efficiency correlates directly to the reduction in water use. For instance, at our San Ardo vineyard, we were battling an outbreak of the pacific mite starting back in 2004. At the time, using a conventional sprayer, we were applying treatments up to five times. Once we purchased the ON-Target sprayer, we were able to reduce applications down to three, two and now only once each year to treat for pacific mites. We noticed the reduction in water use almost immediately. We went from applying over 100 gallons per acre down to only 30 gallons per acre. That type of decrease has meant that the machine has paid for itself in just two years. When you consider the savings from water use, that we are now using the low end rates for all fungicides, which also saves money – and our labor efficiencies, the ON-Target sprayer is well worth the up-front costs. Eventually, as rigs wear out and need to be replaced, we'll outfit the entire company with ON-Target sprayers. It just makes good business sense since nothing else works like it.
J&L Farms - Bradley, CA
J&L Farms is currently growing 1,600 acres of winegrapes for Lockwood Vineyard and another 1,300 acres for Diageo Chateau Estate and Wines. We’ve got 5 ON-Target sprayers used on all of the vineyards. Given the number of plots we manage, it was important that we have a system that was efficient, easy to transport from location to location and worked reliably. We currently operate on a 10-day spray schedule, 60 acres per day per machine, for a total of 300 acres each day. The ON-Target system enables us to maintain our schedule without wasting time, water or materials. The coverage of the machines is unlike anything else. The electrical charge ensures that the drop sticks to the bottom of the plant’s leaves, ensuring the water and applied chemicals are properly absorbed. The current machine uses 15 gallons per acre of water and chemicals. At one point, we conducted our own test to determine the highest efficiency and ran 15 gallons per acre, 20 gallons per acre and 50 gallons per acre through our machines. Ultimately, at 15 gallons per acre we saw the needed results without compromising the plants. This saves time and money for water, chemicals and labor. For some growers, the cost up front can be a factor in not considering ON-Target. In the end, I think you come out ahead by having this sprayer. The amount of money you save in fertilizer and other chemicals, water, man-power and maintenance makes it worth it. These machines require about 20 hours of upkeep each year, which may seem like a lot compared to other rigs, but again, the time is worth it for the results. Even taking more time to maintain them, you still save more money in the long run by reducing the number of times and amount you spray. I haven’t found anything that works better.
Blair Ground Service, Inc.
For over 2 years we tried to get one of our largest customers to let us try the ON–Target system on his cotton for the layby miticide spray. He didn’t believe that 5 gallons per acre would work, but allowed us to try ON–Target on 600 of 1500 acres of seed alfalfa. His other 900 acres were applied by air. Three weeks after the application, the 900 air applied acres had to be re-sprayed. The farmer said the residual for the miticide was about 40% longer by using ON–Target. He was so happy with the ON–Target results that he had us do 10,000 acres of cotton this year. As expected, he saw the same results on his cotton as he had on his alfalfa.
Blossom Ridge Farm, Inc.
Thank you for the effort you made to introduce us to this new tool. I have personally used the Electrocoup F3005 for the past two years to prune and train my young plantings of cherries to the central leader and KGB bush systems. We have been able to accomplish more than twice as much detail work each day than we were previously, simply because the hand fatigue has been eliminated and I no longer am forced to carry loppers as well as a saw. With this tool I always have a free hand to remove the trimmings from the tree row, so there is also no time spent going back to clean debris. Another benefit that I have found is that toward the end of the day I can switch hands giving myself a break which was not all that easy to do with a hand tool. This is one of the best treats I have ever given myself and the people I work with. Thank you — change is not always easy.
Maple Vineyards - Healdsburg, CA
We originally purchased our first two Electrocoups back in 1990 second hand. When they eventually wore out we tried another brand. After trying all the other brands on the market we decided to revisit Electrocoup. In 2006 we tried the new model F3005 Electrocoup and immediately fell in love with it. We purchased two units and have been using them ever since. We are a small owner operated vineyard and I estimate that we save between $9,000.00 to $10,000.00 dollars annually by doing our own pruning. The Electrocoup is light weight and fits nicely in your hand. The battery vest is comfortable and we do not have to recharge the batteries at all during the day. We recommend Electrocoup to our friends and neighbors regularly. If you want to save your body and your money invest in Electrocoup pruning shears.
Hahn Estate Vineyards - Soledad, CA
The fact that the battery would hold its charge for a whole days work was a major selling point for me. We purchased 44 Electrocoup pruning pliers made by Infaco five seasons ago. In previous years it took about 60 pruners to cover the ground we needed to during pruning season. The increase in production using the Electrocoups meant we were able to eliminate 1 full crew (20 men) virtually paying for the Electrocoups in one season.