The Use of Shielded Nozzles to Reduce Off-target Herbicide Spray Drift PDF Download

Author: J. Maybank
Publisher:
ISBN:
Category : Herbicides
Languages : en
Pages : 0

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Author: Donald J. Ecobichon
Publisher: CRC Press
ISBN: 1000162966
Category : Science
Languages : en
Pages : 268

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Book Description
With three million intoxications a year, global concern about occupational exposure to pesticides makes it crucial that occupational health professionals be able monitor pesticide exposure. With a useful analysis of the advantages and disadvantages of classic and modern techniques, Occupational Hazards of Pesticide Exposure permits professionals to undertake these tasks with techniques best suited to a given situation. Includes descriptions and examples of how to: o Quantify aerial drift of pesticide sprays o Determine on-target/off-target loss of pesticide o Measure disposition of pesticides on surfaces o Detect translocation of residues for air and surfaces to skin o Measure absorption through the skin o Quantify residues or metabolites in biological fluids o Determine the extent of neurological impairment

Author: G. Robert Goss
Publisher: ASTM International
ISBN: 0803124694
Category :
Languages : en
Pages : 328

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Author: Hani Hassan Osman Awadallah
Publisher:
ISBN:
Category :
Languages : en
Pages : 160

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Book Description
Drift, which is defined as the movement of chemical away from the intended target, is one of the major concerns in pesticide spraying, causing environmental pollution and economical losses. One of the major factors influencing drift is wind. Mechanical shields have heen used as a method to reduce drift by deflecting wind away from the spray. In this study mechanical shields for minimizing spray drift were designed, developed and tested in a wind tunnel. Two different designs were considered and their performances were compared with the shield designed by Ozkan et al. (1997)--Each shield was tested using two standard flat fan nozzles (8001 and 8003), operated at three levels of pressure (138, 276 and 414 kPa) Test for no shield and no wind conditions were also conducted to represent zero drift condition. The average wind tunnel air velocity was 6.2 m/s. A three dimensional patternator (1.3 m x 1.0 m x 0,15 m) was used to measure the amount of spray recovery under each treatment. Percent spray drift and distance of center of mass from nozzle axis were used as criterions to compare the performances of the shields. Data was analyzed using a completely randomized design, and means separation was performed using Duncan's Multiple Range Test at 0.05 level of significance A symmetrical triple circular shield had the best performance compared to the other shields due to its aerodynamic features, which provided natural air assist as well as an air curtain in front of the discharge with partial shielding of the portion part of the nozzle. Results showed that shields are more efficient in reducing drift using the 8001 nozzle. The DL and percent drift values were not significantly consistent.

Author: A. G. Dexter
Publisher:
ISBN:
Category : Crops
Languages : en
Pages : 12

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Author: Graham A Matthews
Publisher: World Scientific Publishing Company
ISBN: 1911298127
Category : Technology & Engineering
Languages : en
Pages : 340

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Book Description
Pesticides continue to provide an important tool in integrated pest management (IPM) programmes. Hitherto IPM programmes have had a strong bias towards insect control, but farmers need to control weeds, plant pathogens and other pest problems.This book follows the author's successful “pesticide application methods” by relating the equipment needs to the overall pest control requirement of major crops. It outlines the pest problems against which farmers are using pesticides and focusses on the details of the application techniques they need to optimise pesticide use.Much attention is now being given to genetically modified crops, but these do not necessarily avoid the use of pesticides. Some are engineered to be resistant to certain herbicides, so the use of these herbicides will still require careful application in order to minimise environmental side effects. Similarly, crops engineered for resistance to certain insect pest species may remain susceptible to other pests, thus emphasising the need for crop monitoring and careful use of any chemicals to avoid disrupting biological control.

Author: G. B. Beestman
Publisher: ASTM International
ISBN: 0803109709
Category : Aquatic pests
Languages : en
Pages : 236

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Book Description

Author: Primary Industries Standing Committee
Publisher: CSIRO PUBLISHING
ISBN: 9780643068353
Category : Business & Economics
Languages : en
Pages : 88

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Book Description
This practical guide focuses on managing the risks of spray drift and includes information on appropriate handing practices to ensure a safe workplace.

Author: Weed Science Society of America
Publisher:
ISBN:
Category : Weeds
Languages : en
Pages : 838

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Book Description

Author: Louise Ferguson
Publisher: UCANR Publications
ISBN: 1601078773
Category : Technology & Engineering
Languages : en
Pages : 346

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Book Description
The long-awaited Pistachio Production Manual from the University of California is here! The combined knowledge of 42 UC and industry experts and years of research and field trials are brought to fruition in this long awaited, 321-page manual. From an overview of the state of the industry to physiological disorders, the 8-part manual covers everything you need to know. Chapters cover topics including orchard design; rootstocks and cultivars; planting and training young trees; weed, insect, mite, and vertebrate management; irrigation and salinity management; disease management; and physiological disorders including alternate bearing, nut blanking and shell splitting. Over 200 color photographs and 60 diagrams, charts, and tables illustrate key points. The back cover includes a photographic guide to the developmental stages of the pistachio.