A method to reduce spray drift during application of pesticides and crop protection agents

A pesticide spraying and pesticide technology, applied in botany equipment and methods, biocides, animal repellents, etc., can solve the problems of limited application and achieve the effect of reducing off-target movement

Inactive Publication Date: 2009-04-29
DOW AGROSCIENCES LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some herbicides have been shown to be very sensitive to phytotoxicity in very low parts per million (ppm) or even parts per billion (ppb) levels of particular plant species, which leads to greening of sensitive crops, fruit trees and residential areas Administering around is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1 Wind tunnel atomization

[0012] Aerodynamically engineered wind tunnels that provide uniform air velocity over the width of the nozzle spray plume are often used in agriculture, forestry or other disciplines to accurately simulate sprayer performance and obtain droplet size results. This study used equipment and methods that have been accepted by the US EPA as conditioning data (Hewitt, AJ. (1994) Measurement Techniques for Atomization Droplet SizeSpectra Using Particle Size Analyzers in Wind Tunnels. SDTF Report T94-001, EPA MRID 43485603). This study is based on ASTM Standards for Laser Diffraction Droplet Size Measurement and Data Reporting (ASTM E799 Standard Practice for Determining Data Criteria & Processing for Liquid Drop Size Analysis. American Soc. Testing & Materials, Race St., Philadelphia). Prepare a standard herbicide spray containing cyhalofop and crop oil according to label recommendations. Add invert sugar as a 70% solution to the mix...

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PUM

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Abstract

Spray drift during the application of agricultural chemicals is reduced by incorporating a monosaccharide or a mixture of monosaccharides into the liquid to be sprayed and by spraying the resulting liquid through a flat fan or straight stream nozzle without a deflector. Average spray droplet sizes are increased and the percentage of driftable spray droplets (< 150 microns) produced are reduced.

Description

Background technique [0001] The present invention relates to a novel method of reducing spray drift during the application of chemical pesticides by incorporating a monosaccharide or mixture of monosaccharides into the liquid being sprayed and spraying the resulting liquid through a flat fan nozzle. Agricultural spraying using economically available technology uses hydraulic spray nozzles that inherently produce a wide range of droplet sizes. A large fraction of the droplets are less than 150 microns (μ) in diameter, as evidenced in many field trials, wind tunnel tests and accepted mathematical models for drift, ie many droplets are deposited at a considerable distance away from the target. Some herbicides have been shown to be very sensitive to phytotoxicity in very low parts per million (ppm) or even parts per billion (ppb) levels of particular plant species, leading to greening of sensitive crops, fruit trees and residential areas Peripheral administration is limited. For...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/02A01N39/02A01M7/00A01P13/00A01P3/00A01P7/04
CPCA01N25/06A01N25/00A01N25/02A01N39/02A01M7/00
Inventor R·K·曼D·L·瓦尔克尔R·E·小鲍彻T·小川A·E·哈克D·G·沙特利
Owner DOW AGROSCIENCES LLC
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