Navigation Links
Spray application rate, equipment affect pest management in greenhouse ivy plants
Date:3/31/2010

MERELBEKE, BELGIUMIn Belgium, ornamental plants account for almost 0.46 billion euro in sales, or about 34% of total horticultural production output. For growers, finding ways to control pests in production facilities is more difficult as the availability of authorized plant protection products becomes more regulated. Ninety percent of Belgian growers still use high-pressure spray equipment to apply plant protection products, but a recent survey of ornamental plant growers showed that present-day spray application techniques are unsatisfactory. As more growers implement automated spray boom systems, many questions remain concerning the optimal settings for the equipment. New research now offers some clear recommendations for production greenhouse operators.

Besides the traditional fixed or rolling benches on the floor, Belgian potted plant growers frequently use hanging shelves positioned 2 to 4 meters high in the greenhouse arches. This technique allows growers to make the most of limited greenhouse space. Because these shelves are located above the traditional benches and close to the greenhouse roof, the only currently available and useful equipment for applying plant protection products are spray guns. In most cases, the spray gun is operated from the ground floor and the spray "cloud" has to be targeted from a distance and sprayed from below to the canopy. When spray guns, or "lances", are use to apply pesticides to potted plants grown on hanging shelves, much of the pesticide ends up on the ground; the amount of pesticide retained on the crop depends on the formulation of the pesticide, the volume of spray applied, the type of spray equipment, weather, and other factors.

David Nuyttens of the Institute for Agricultural and Fisheries Research (ILVO) and a team of research scientists investigated the effect of spray application technique on the spray deposition in ivy pot plants grown on hanging shelves in greenhouses. The experiment was conducted in a commercial greenhouse during January and February 2008 using the ivy cultivar Hedera algeriensis cv. Montgomery (Hibb.). Two different spray application systems were tested: a spray gun equipped with a disc-core nozzle, and vertical spray booms mounted on a trolley. The effect of application rate, nozzle type, size and spray pressure, and the difference between the traditional spray gun and a vertical spray boom system were recorded. The full study was published in HortScience.

The scientists found that the spray system and application rate clearly influenced the system's effectiveness. "Evaluating the deposition results for the two crop zones reveals that the spray gun performed quite well on the runners", Nuyttens explained. "With this technique, the spray liquid was targeted from below to the easily accessible runners, which might explain the higher spray deposition on this part of the crop." For the sprays performed with the spray boom system, a significant difference was found between the lower and higher application rate. Because the concentration of tracer was the same for both application rates, doubling the application rate justifies the increase in spray depositions.

On the main crop canopy, the spray gun performed a lot worse", Nuyttens added. "Although the spray gun operated from the ground floor still performed best on the easily accessible crop zone with the runners, its performance in the more dense main crop canopy zone was inferior."

Summarizing the significance of the research, the researchers said that the experiment underlines that, besides the application rate, the spray application equipment is an important factor defining the spray deposition achieved when spraying ivy pot plants stored on hanging shelves in greenhouses.


'/>"/>

Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert  

Related biology news :

1. Urine sprays during courtship send mixed messages
2. Boys with urogenital birth defects are 33 percent more common in villages sprayed with DDT
3. You must remember this: Scientists develop nasal spray that improves memory
4. Oil spray reduces greenhouse gas emissions from pig finishing barns
5. Hairspray is linked to common genital birth defect, says study
6. ST Kinetics and NTU set up Southeast Asias first cold spray research center
7. The bombardier beetle, power venom and spray technologies
8. Bear spray a viable alternative to guns for deterring bears, BYU study shows
9. Cells get sprayed
10. Electrospray droplet research yields surprising, practical results
11. Quickly and easily integrate fingerprint biometric features into portable applications with Texas Instruments comprehensive, low cost fingerprint development kit
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Spray application rate, equipment affect pest management in greenhouse ivy plants
(Date:6/16/2016)... The global Biometric ... USD 1.83 billion by 2024, according to a ... proliferation and increasing demand in commercial buildings, consumer ... the market growth.      (Logo: ... of advanced multimodal techniques for biometric authentication and ...
(Date:6/9/2016)... 2016  Perkotek an innovation leader in attendance control systems is proud to announce ... for employers to make sure the right employees are actually signing in, and to ... ... ... ...
(Date:6/7/2016)... 7, 2016  Syngrafii Inc. and San Antonio ... that includes integrating Syngrafii,s patented LongPen™ eSignature "Wet" ... collaboration will result in greater convenience for SACU ... while maintaining existing document workflow and compliance requirements. ... Highlights: ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... ... (Yeast and Mold) microbial test has received AOAC Research Institute approval 061601. , ... tests introduced last year,” stated Bob Salter, Vice President of Regulatory and Industrial ...
(Date:6/23/2016)... ... 2016 , ... STACS DNA Inc., the sample tracking software company, today announced ... has joined STACS DNA as a Field Application Specialist. , “I am thrilled ... COO of STACS DNA. “In further expanding our capacity as a scientific integrator, Hays ...
(Date:6/23/2016)... , June 23, 2016 On ... session at 4,833.32, down 0.22%; the Dow Jones Industrial Average ... 500 closed at 2,085.45, down 0.17%. Stock-Callers.com has initiated coverage ... INFI ), Nektar Therapeutics (NASDAQ: NKTR ), Aralez ... Inc. (NASDAQ: BIND ). Learn more about these ...
(Date:6/23/2016)... 23, 2016 ReportsnReports.com adds ... to its pharmaceuticals section with historic and forecast ... much more. Complete report on the ... profiling 15 companies and supported with 261 tables ... . The Global Cell Culture ...
Breaking Biology Technology: