Western Trial Update
Large Plot Demonstration (LPD) —
Tomatoes — Five Points, California — 2011
Objective
Experimental design and treatment rates
To validate the grower benefits and level of insect control of
DuPont™ Verimark™ when used in its preferred technical position
in tomatoes compared to existing standards.
Verimark™ 13.5 oz/A
tray drench (0 DAP)
fb Radiant 10 oz/A
(38 DAP)/Dimethoate
4E 1 pt/A (50 DAP)/
Radiant 10 oz/A (58
DAP)/Dimethoate 4E
1 pt/A (65 DAP)
Verimark™ 13.5 oz/A
tray drench (0 DAP)
fb Radiant 10 oz (38
DAP)/Dimethoate
4E 1 pt/A (50 DAP)/
Radiant 10 oz/A (58
DAP)/Dimethoate 4E
1 pt/A (65 DAP)
Verimark™ 13.5 oz/A
tray drench (0 DAP)
fb Radiant 10 oz (38
DAP)/Dimethoate
4E 1 pt/A (50 DAP)/
Radiant 10 oz/A (58
DAP)/Dimethoate 4E
1 pt/A (65 DAP)
Sub-treatment 2
Radiant 10 oz/A (38
DAP/Dimethoate
4E 1 pt/A (50 DAP)/
Radiant 10 oz/A (58
DAP)/Dimethoate 4E
1 pt/A (65 DAP)
Radiant 10 oz/A (38
DAP)/Dimethoate
4E 1 pt/A (50 DAP)/
Radiant 10 oz/A (58
DAP)/Dimethoate 4E
1 pt/A (65 DAP)
Radiant 10 oz/A (38
DAP)/Dimethoate
4E 1 pt/A (50 DAP)/
Radiant 10 oz/A (58
DAP)/Dimethoate 4E
1 pt/A (65 DAP)
Sub-treatment 3
Radiant 10 oz/A (38 Radiant 10 oz/A (38 Radiant 10 oz/A (38
DAP/Dimethoate 4E 1 DAP/Dimethoate 4E 1 DAP/Dimethoate 4E 1
pt/A (50 DAP)
pt/A (50 DAP)
pt/A (50 DAP)
Sub-treatment 1
Agronomic Information
Tomatoes
Transplanting date: May 17, 2011
Variety: Processing tomato transplants (cv. H8004)
Experimental design and number of treatments: This was a splitplot test with two main treatments and 4 sub-treatments in a
randomized complete block with four replications
Plot size: Main plots were 3 beds wide and 300 ft long, the sub-
treatments were each 3 beds wide and 75 ft long
Bed spacing: 60 inches
Plant spacing: 12"; one row per bed
Planting rate: 8,712 plants per acre
Disease present: Tomato spotted wilt virus
Competitive products featured: Platinum 2SL, Venom, Radiant and
Dimethoate
Application Information
Sub-treatment 4
Nothing
Nothing

Treatment

Five Points, California
University of California, West Side Research and Extension Center,
Fresno County
Researcher: Tom Turini
Main Treatment
Untreated
+

Location
Main Treatment
Main Treatment
Drip: Platinum 75 SG Drip: Platinum 75 SG
3.7 oz/A (36 DAP)
3.7 oz/A (36 DAP)
fb Venom 6.0 oz/A
fb Venom 6.0 oz/A
(56 DAP)
(66 DAP)
+
+
Nothing
Verimark™ tray drench made on May 17, same day of transplant
Verimark™ stops insect-vector feeding fast enough
to reduce transmissions of some plant diseases.
Tomato spotted wilt virus vectored by western flower thrips
• Verimark™ was applied as a transplant tray drench at a rate of
13.5 oz/A.
• Platinum 2SL and Venom were applied via drip chemigation
over 45 minutes, and water was run for 1 hour after the
injections.
• Radiant and Dimethoate were applied with tractor-mounted
sprayer at 30 gpa.
Photos courtesy of Tom Turini, Univ. of Calif.
Summary
• In this study, plots that received the
Verimark™ tray drench application
resulted in highest yield increase and
lowest incidence of tomato spotted
wilt virus (Figures 1 and 2).
• The use of Verimark™ increased yield
by 4.5 and 5.2 tons/A over the foliar
program treatment when Platinum/
Venom was used or not used,
respectively (Figure 2).
Verimark™ + Radiant 2x
Radiant 2x
Radiant
Untreated Verimark™ + Radiant 2x
Radiant 2x
Platinum
Radiant
12-Jul
12-Aug
22-Jun
12-Jul
12-Aug
22-Jun
12-Jul
12-Aug
22-Jun
12-Aug
12-Jul
22-Jun
12-Aug
12-Jul
22-Jun
12-Jul
12-Aug
22-Jun
12-Jul
12-Aug
22-Jun
12-Jul
• The use of Verimark™ + foliar program
12-Aug
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
22-Jun
TSWV incidence (proportion)
Figure 1: Tomato Spotted Wilt Virus Suppression in Processing Tomatoes
Westside Field Station, CA (WEI-11-229), Tom Turini, UC, 2011
Untreated
Untreated
increased yield by 7.0 and 10.4
tons/A over the untreated when
Platinum/Venom was used or not
used, respectively (Figure 2).
• No adverse crop response was
observed with Verimark™ or any other
treatments.
Plants treated with Verimark TD resulted in the lowest level of tomato spotted wilt virus.
™
30
Yield: tons/A
25
20
Figure 2: Yield in Processing Tomatoes
Westside Field Station, CA (WEI-11-229), Tom Turini, UC
Learn more.
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Contact your local DuPont retailer
or representative to learn how you
can produce a more appealing crop
at harvest with Verimark™ insect
control from DuPont. Visit us at
verimark.dupont.com.
10
5
0
Verimark™ + Radiant 2x
Radiant 2x
Radiant
Platinum
Untreated Verimark™ + Radiant 2x
Radiant 2x
Radiant
Untreated
Untreated
Verimark™ tray drench resulted in 7–10.45 tons/A higher yields than the untreated check.
DuPont™ Verimark™ may not be registered for sale or use in all states. Contact your local DuPont representative for details and availability in your state.
The EPA registered label contains the statement, “This product is highly toxic to bees exposed to direct treatment on blooming crops or weeds. Do not apply this product or allow to drift to
blooming crops or weeds if bees are foraging in the treatment area.”
This reference guide is not intended as a substitute for the product label for the product(s) referenced herein. Product labels for the above product(s) contain important precautions,
directions for use, and product warranty and liability limitations, which must be read before using the product(s). Applicators must be in possession of the product label(s) at the time of
application. Always read and follow all label directions and precautions for use when using any pesticide alone or in tank-mix combinations.
The DuPont Oval Logo, DuPont™, The miracles of science™, Cyazypyr™ and Verimark™ are trademarks or registered trademarks of DuPont or its affiliates.
Radiant is a registered trademark of Dow AgroSciences LLC. Platinum is a registered trademark of a Syngenta Group Company. Venom is a registered trademark of Valent U.S.A. Corporation.
Copyright © 2013-2014 E.I. du Pont de Nemours and Company. All Rights Reserved. 6/14
Reorder No.: K-28095 (Replaces K-27194)