Results 211 to 220 of about 25,542 (247)

CHARACTERIZATION OF HYDRAULIC NOZZLES FOR DROPLET SIZE AND SPRAY COVERAGE

Atomization and Sprays, 2012
Spray coverage specifications for commercially available nozzles could help applicators determine the optimal nozzles for effective control of insects, diseases, and weeds. Spray coverage and deposit density from seven types of nozzles at three different flow rates (0.76, 1.14, and 2.27 L min−1) and two target positions (0.50 and 0.70 m below the ...
Heping Zhu, Huseyin GÜLER, H Erdal Özkan   +2 more
exaly   +3 more sources

Parameterization of the sea spray generation function with whitecap coverage

Acta Oceanologica Sinica, 2020
Sea spray droplets are produced by waves breaking on the sea surface, and they vary the transfer of energy between the atmosphere and ocean. The sea spray generation function (SSGF) is generally considered as a function of the initial radius of the spray droplets and the wind speed.
Jian Shi, Wenjing Zhang, Xueyan Zhang, Jingdong Liu, Zhenyu Liu   +4 more
exaly   +2 more sources

A Fluorescent Pigment to Measure Spray Coverage

Journal of Economic Entomology, 1970
Spray coverage was determined by measuring emission of visible light from 5/8-inch-diameter areas of fluorescent pigment-sprayed leaves when they were exposed to ultraviolet light in a Turner Huorometer. Plum trees and grapevines were sprayed with air-carrier sprayers traveling at constant speed, air volume, and air velocity.
E. M. Stafford, J. B. Byass, N. B. Akesson   +2 more
openaire   +1 more source

Measuring Spray Coverage on Soybean Leaves

Transactions of the ASAE, 1981
ABSTRACT A method was developed for using a fluorescent tracer added to fungicide spray to measure spray coverage on soybean leaves. The unique feacture of the method is that analysis is made directly from the leaf surface without distrubing the spray deposit. A statistical cor-relation was made to express the percentage of spray coverage as a function
null J. B. Carlton, null L. F. Bouse, null H. P. O'Neal, null W. J. Walla   +3 more
openaire   +1 more source

Spraying Coverage Path Planning for Agriculture Unmanned Aerial Vehicles

2021 26th International Conference on Automation and Computing (ICAC), 2021
Aiming at improving the efficiency of pesticide application from crop spraying unmanned aerial vehicles (UAVs), this paper investigates problems in spray distribution modelling and coverage path planning (CPP). To capture the pattern of spray, the distribution model is constructed by making use of experimental data and the model fitting method.
Yaohua Guo, Cunjia Liu, Matthew Coombes
openaire   +1 more source

A MOBILE SYSTEM FOR MEASURING SPRAY COVERAGE - BG1

Acta Horticulturae, 2001
A computerized Spraying Coverage Analysis system has been developed to assist researchers, instructors and farmers to measure the coverage efficiency of pesticide application machines and systems. The system is compact and mobile and intended to work in the field, connected electrically to a tractor, jeep or other agricultural vehicles, or, optionally,
G. Manor, V. Shapiro
openaire   +1 more source

Effect of drift‐reducing spray configurations on spray deposition and coverage in winter wheat

Pest Management Science
Abstract BACKGROUND Selecting an optimal spray configuration in arable crops is complex due to the large variety in techniques, nozzle types, crop stages, and pathogens.
Ingrid Zwertvaegher, Tewodros Andargie Zewdie, Jan Vanwijnsberghe, Benny De Cauwer, Sander De Ryck, Pieter Verboven, David Nuyttens   +6 more
openaire   +2 more sources