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ASTM Selected Technical Papers
Pesticide Formulation and Delivery Systems: 39th Volume, Innovative Formulation, Application and Adjuvant Technologies for Agriculture
By
Douglas J. Linscott
Douglas J. Linscott
Symposium Chair and STP Editor
1
Corteva Agrisciences
,
Indianapolis, IN,
US
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ISBN:
978-0-8031-7684-3
No. of Pages:
132
Publisher:
ASTM International
Publication date:
2019

Oil-in-water emulsions are known to reduce the volume of driftable fines in many agricultural sprays. These types of drift control are thought to work by causing perforations in the spray close to the exit of the nozzle, where the spray sheet is thick. However, not all oil emulsions provide the same reduction of driftable fines in all situations. In this paper, the effect of oil viscosity on the drift reduction ability of an oil emulsion is examined using a series of mineral oils of varying viscosities and the same emulsifier. In addition to the mineral oils, studies have also been carried out using vegetable oils and methylated soybean oil to examine if the type of oil matters and if trends observed with oil viscosity hold true across oil types. The results obtained in this study are discussed in the context of previous studies where oil viscosity was changed using hydrophobic silica.

1.
Hewitt
A.J
.
, “
Droplet Size and Agricultural Spraying, Part 1: Atomization, Spray Transport, Deposition, Drift, and Droplet Size Measurement Techniques
,”
Atomization and Sprays
7
, no.
3
(
1997
): 235–244.
2.
Hilz
E
.
and
Vermeer
A. W.
P
.
, “
Spray Drift Review: The Extent to Which a Formulation Can Contribute to Spray Drift Reduction
,”
Crop Protection
44
(
2013
): 75–83.
3.
Qin
K
.
,
Tank
H
.
,
Wilson
S
.
,
Downer
B
.
, and
Liu
L
.
, “
Controlling Droplet-Size Distribution Using Oil Emulsions in Agricultural Sprays
,”
Atomization and Sprays
9
, no.
4
(
1999
): 227–239.
4.
Elsik
C.M
.
, “
Round-Robin Evaluation of ASTM Standard Test Method E2798 for Spray Drift Reduction Adjuvants
,”
Journal of ASTM International
8
, no.
8
(
2011
): 1–14,
5.
Macosko
C.W
.
,
Rheology Principles, Measurements, and Applications
(
New York
:
Wiley-VCH
,
1994
).
6.
Dexter
R.W
.
, “
Development of an ASTM Method for Measurement of the Extensional Viscosity of Agricultural Spray Solutions
,”
Journal of ASTM International
4
, no.
3
(
2007
): 1–8,
7.
Ellis
M. C.
Butler
,
Tuck
C.R
.
, and
Miller
P. C.
H
.
, “
Dilute Emulsions and Their Effect on the Breakup of the Liquid Sheet Produced by Flat-Fan Spray Nozzles
,”
Atomization and Sprays
9
, no.
4
(
1999
): 385–397.
8.
Vernay
C
.
,
Castaing
J.-C
.
,
Goyal
R
.
,
Shanmuga
K
.
,
Ramos
L
.
, and
Ligoure
C
.
, “
Emulsion-Based Drift-Control Additives. How Do They Work?
” in
Proceedings of the 11th International Symposium on Adjuvants for Agrochemicals
, ed.
Castelani
P
.
,
Stock
D
.
, and
Morán Puente
D.W
.
(
Wageningen, The Netherlands
:
ISAA Society
,
2016
), 71–77.
9.
Hilz
E
.
,
Vermeer
A. W.
P
.
,
Stuart
M. A.
C
.
, and
Leermakers
F. A.
M
.
, “
Mechanism of Perforation Based on Spreading Properties of Emulsified Oils
,”
Atomization and Sprays
22
, no.
12
(
2012
): 1053–1075.
10.
Dexter
R.W
.
, “
The Effect of Fluid Properties on the Spray Quality from a Flat Fan Nozzle
,” in
Pesticide Formulations and Application Systems: Twentieth Volume
, ed.
Viets
A.K
.
,
Tann
R.S
.
, and
Mueninghoff
J.C
.
(
West Conshohocken, PA
:
ASTM International
,
2001
), 27–43,
11.
Hilz
E
.
, “
Atomization of Dilute Oil-in-Water Emulsions during Application of Crop Protection Products
” (Ph.D. thesis,
Wageningen University
, The Netherlands,
2013
).
12.
Standard Test Method for Determining Liquid Drop Size Characteristics in a Spray Using Optical Nonimaging Light-Scattering Instruments
, ASTM E1260-03(
2015
) (
West Conshohocken, PA
:
ASTM International
, approved March 1,
2015
),
13.
Fritz
B.K
.
,
Hoffman
W.C
.
,
Bagley
W.E
.
,
Kruger
G.R
.
,
Czaczyk
Z
.
, and
Henry
R.S
.
, “
Measuring Droplet Size of Agricultural Spray Nozzles—Measurement Distance and Airspeed Effects
,”
Atomization and Sprays
24
, no.
9
(
2014
): 747–760.
14.
Hoffman
W.C
.
,
Fritz
B.K
.
,
Bagely
W.E
.
, and
Lan
Y
.
, “
Effects of Air Speed and Liquid Temperature on Droplet Size
,”
Journal of ASTM International
8
, no.
4
(
2011
): 1–9,
15.
Penfield
,
K.
,
Sun
S.
,
Kayea
,
R.
, “
Low-Speed Wind Tunnel of Novel, Closed-Loop, Vertical Design: Performance in Drift Control Applications
,” in
Proceedings of the 11th International Symposium on Adjuvants for Agrochemicals
, ed.
Castelani
P
.
,
Stock
D
.
, and
Morán Puente
D.W
.
(
Wageningen, The Netherlands
:
ISAA Society
,
2016
), 169–174.
16.
Standard Test Method for Characterization of Performance of Pesticide Spray Drift Reduction Adjuvants for Ground Application
, ASTM E2798-11 (
West Conshohocken, PA
:
ASTM International
, approved January 1,
2011
),
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