EurekaMag
+ Most Popular
Cunninghamia lanceolata plantations in China
Mammalian lairs in paleo ecological studies and palynology
Studies on technological possibilities in utilization of anhydrous milk fat for production of recombined butter-like products
Should right-sided fibroelastomas be operated upon?
Large esophageal lipoma
Apoptosis in the mammalian thymus during normal histogenesis and under various in vitro and in vivo experimental conditions
Poissons characoides nouveaux ou non signales de l'Ilha do Bananal, Bresil
Desensitizing efficacy of Colgate Sensitive Maximum Strength and Fresh Mint Sensodyne dentifrices
Administration of fluid by subcutaneous infusion: revival of a forgotten method
Tundra mosquito control - an impossible dream?
Schizophrenia for primary care providers: how to contribute to the care of a vulnerable patient population
Geochemical pattern analysis; method of describing the Southeastern limestone regional aquifer system
Incidence of low birth weights in a hospital of Mexico City
Tabanidae
Graded management intensity of grassland systems for enhancing floristic diversity
Microbiology and biochemistry of cheese and fermented milk
The ember tetra: a new pygmy characid tetra from the Rio das Mortes, Brazil, Hyphessobrycon amandae sp. n. (Pisces, Characoidei)
Risk factors of contrast-induced nephropathy in patients after coronary artery intervention
Renovation of onsite domestic wastewater in a poorly drained soil
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Systolic blood pressure in a population of infants in the first year of life: the Brompton study
Haematological studies in rats fed with metanil yellow
Studies on pasteurellosis. I. A new species of Pasteurella encountered in chronic fowl cholera
Dormancy breaking and germination of Acacia salicina Lindl. seeds
therapy of lupus nephritis. a two-year prospective study

Evaluation of Deposition and Coverage by An Air-Assisted Sprayer and Two AIR-BLAST SPRAYERS IN A CITRUS ORCHARD


Evaluation of Deposition and Coverage by An Air-Assisted Sprayer and Two AIR-BLAST SPRAYERS IN A CITRUS ORCHARD



Transactions of the Asabe 57(4): 1007-1013



ISSN/ISBN: 2151-0032

This study evaluated a retrofit air-assisted sprayer, a conventional axial-fan air-blast sprayer, and a multifan vertical air-blast sprayer for their application efficiency in citrus orchards. Field experiments involved three spray application treatments (three sprayers) replicated three times. Each replication included two short, two medium, and two tall tree canopies. Green cards and water-sensitive papers were used as passive samplers to evaluate spray deposition and coverage, respectively. The samplers were located laterally on the canopy surface and 0.6 m inside the canopy, and vertically at canopy heights of 0.5, 1.0, 1.5, and 2.0 m for short canopies and 1.0, 2.0, 3.0, and 4.0 m for medium and tall canopies. Pyranine 10G tracer dye dissolved in water was used as the spray mix. Treatments were applied at 2805 L ha(-1) (300 gal acre(-1)) for all sprayers, except the retrofit sprayer, for which the application rate varied based on the canopy size. Results revealed that deposition and coverage on the canopy surface was higher than at 0.6 m inside the canopy for all sprayer treatments and canopy sizes. The retrofit sprayer resulted in comparable spray deposition with 30% and 70% less spray volume for medium and short canopies, respectively, compared to the other two sprayers. The multifan vertical sprayer resulted in significantly less deposition and coverage (at the 5% level) for the lower sections of short canopies and for 0.6 m inside tall canopies. Thus, a multifan vertical sprayer may be more suited for applications in commercial orchards with medium, less dense, and hedged canopies, whereas a retrofit air-assisted sprayer may be best for all types of citrus canopies, as it adjusts the air-assist and liquid flow rates based on canopy size.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 070723389

Download citation: RISBibTeXText

Related references

Spray coverage and citrus pest control efficiency with different types of orchard sprayers. AMA, Agricultural Mechanization in Asia, Africa and Latin America 31(2): 45-51, 2000

Comparison of the pesticide coverage achieved in a trellised vineyard by a prototype tunnel sprayer, a hydraulic sprayer, an air-assisted sprayer and a pneumatic sprayer. Spanish Journal of Agricultural Research 3(2): 175-181, 2005

Evaluation of dilute vs. concentrate sprayer performance Orchard sprayers, equipment, apple varieties, Massachusetts. Fruit notes Cooperative Extension Service University of Massachussettsng 47(2): 6-9, 1982

Eulerian-Lagrangian model of the behaviour of droplets produced by an air-assisted sprayer in a citrus orchard. Biosystems Engineering 154: 76-91, 2017

Orchard tunnel sprayers with reduced emission to the environment. Results of deposition and emission of new types of orchard sprayers. Symposium international sur les techniques d' application des produits phytosanitaires International symposium on pesticides application techniques Proceedings of a conference held in Strasbourg, France, 22-24 September 1993 Vol 1: 297-304, 1993

CFD simulation of pesticide spray from air-assisted sprayers in an apple orchard: Tree deposition and off-target losses. Atmospheric Environment 175: 109-119, 2018

Effects of fan speed on spray deposition and drift for targeting air-assisted sprayer in pear orchard. International Journal of Agricultural and Biological Engineering 9(4): 53-62, 2016

Effects of fan speed on spray deposition and drift for targeting air-assisted sprayer in pear orchard. International Journal of Agricultural and Biological Engineering 9(4): 53-62, 2016

Nozzle test system for droplet deposition characteristics of orchard air-assisted sprayer and its application. International Journal of Agricultural and Biological Engineering 7(2): 122-129, 2014

Comparison of a new air-assisted sprayer and two conventional sprayers in terms of deposition, loss to the soil and residue of azoxystrobin and tebuconazole applied to sunlit greenhouse tomato and field cucumber. Pest Management Science 74(2): 448-455, 2018

Deposition and distribution of myclobutanil and tebuconazole in a semidwarf apple orchard by hand-held gun and air-assisted sprayer application. References 76(12): 4123-4130, 2020

Deposition and Coverage of Soybean Leaf Surfaces by Sprays Applied Using Different Assisted Boom Sprayer Systems. Engenharia Agrícola 39(2): 198-207, 2019

Evaluation of acaricides applied by air-blast sprayer to Texas citrus, 1993. Burditt, A K, Jr Arthropod Management Tests 46, 1994

Air-assisted sprayer adapted for precision horticulture: Spray patterns and deposition assessments in small-sized citrus canopies. Biosystems Engineering 113(1): 76-85, 2012

Comparing Quality of a Telescopic Boom Sprayer with Conventional Orchard Sprayers in Iran. Journal of Agricultural Science and Technology 18(3): 585-599, 2016