Results 221 to 230 of about 25,542 (247)

Physico‐chemical studies on agricultural sprays. VII—The visual assessment of spray coverage

Journal of the Science of Food and Agriculture, 1965
AbstractThe wetting ability of spray formulations is best assessed by a visual examination of the sprayed surfaces, but such a method is open to criticism in terms of observer bias and inaccuracy. By use of a panel of observers, the method has been examined to determine the magnitude of such errors and to find means of minimising them.Inexperienced ...
Dorothy I. Conibear, C. G. L. Furmidge
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Sprayed Keratinocytes Suspensions Accelerates Epidermal Coverage in a Porcine Microwound Model

Journal of Burn Care & Rehabilitation, 2000
Keratinocyte suspensions can potentially treat a variety of epidermal defects, but the mechanism of action has not been fully determined. We developed a porcine model to study the effect of sprayed cell suspensions delivered on small wounds within a meshed autograft. Paired full-thickness surgically excised wounds were covered with a fully expanded 3:1
F A, Navarro, M L, Stoner, C S, Park, J C, Huertas, H B, Lee, F M, Wood, D P, Orgill   +6 more
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Effect of Air-jet Configuration on Spray Coverage in Vineyards

Biosystems Engineering, 2005
A new type of sprayer developed for orchard is being adapted for vine spraying. The technology uses vertical air sleeves, generating a two-dimensional horizontal air jet, to distribute spray droplets within the canopy. Three different configurations were tested to determine the combination which provides the most appropriate spray distribution within ...
B. Panneton, B. Lacasse, M. Piché
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INFLUENCE OF WEATHERING ON DDT COVERAGE IN A POTATO SPRAY PROGRAM

Canadian Journal of Plant Science, 1958
Weathering caused most of the early reduction in deposits of DDT sprayed on potato foliage in experiments at Fredericton, N.B., in 1953 and 1954. During July and August plants in the field lost 26 to 63 per cent of initial DDT deposits within 24 hours after spraying.
D. D. Pond, D. Chisholm
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Mechanical Factors Affecting Aerial Spray Coverage of Soybeans

Transactions of the ASAE, 1983
ABSTRACT STUDIES were carried out to determine the effects of several factors in achieving maximum aerial spray coverage on soybeans. Test plots were aerially sprayed with benomyl and a fluorescent pigment. The measured fluorescent emission from sprayed leaf samples identified spray application rate and spray nozzle orientation as having the greatest ...
null J. B. Carlton, null L. F. Bouse, null H. P. O'Neal, null W. J. Walla   +3 more
openaire   +1 more source

Average liquid coverage depending on the type of the nozzle, spraying parameters and characteristics of the sprayed objects [PDF]

Journal of Research and Applications in Agricultural Engineering, 2017
The research has been carried out in laboratory conditions at the Institute of Agricultural Engineering at Wroclaw University of Environmental and Life Sciences. Two single- and two-stream ejector nozzles were used for the tests, which operated at the pressure of 0.2 and 0.4 MPa.
Katarzyna Dereń, Beata Cieniawska, Antoni Szewczyk, Tomasz Sekutowski, Zbytek, Zbyszek   +4 more
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Surface coverage by impact of droplets from a monodisperse spray

Journal of Coatings Technology and Research, 2019
A novel pneumatic monodisperse spray was fabricated to validate the results of a probabilistic model and a stochastic model that were developed to predict surface area coverage of the monodisperse spray. Multiple droplets of a highly viscous 87 wt% aqueous glycerin solution were deposited on a flat, transparent, plexiglass substrate.
A. Dalili, K. Sidawi, S. Chandra
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Spray Coverage and Spray Coverage Profiles from a Pecan Orchard Sprayer Operated at Different Speeds and Volumes, and with and Without a Volute

SSRN Electronic Journal, 2022
Clive H. Bock, Ted Cottrell, Michael Hotchkiss   +2 more
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Spray Coverage Analysis Using a Hand-held Scanner

Transactions of the ASAE, 1993
Hand-held optical scanners provide a low-cost, portable means of digitizing spray-deposit patterns on water-sensitive and Kromekote spot cards. Software was developed to convert the image data to spot counts, sizes, and coverage information. Measurement errors due to spot size, contrast, and method of selecting intensity threshold were evaluated.
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The ‘Electrodyn’ sprayer: first studies of spray coverage in cotton

Crop Protection, 1982
Abstract A programme of investigation was started in mid-1977 in Spain into the performance of the ‘Electrodyn’ sprayer for the control of insect pests on cotton. The first stages of the programme, reported in this paper, evaluated the effect on spray deposition and distribution of emission height, speed of travel, wind speed, and position of the ...
openaire   +1 more source