Skip to main content

Influence of host resistance and insecticide seed treatments on curly top in sugar beets

Strausbaugh, C.A. and Gillen, A.M. (2006) Influence of host resistance and insecticide seed treatments on curly top in sugar beets. Plant Disease. 90(12):1539-1544.

[img] PDF

Download (230kB)


Curly top on sugar beets (Beta vulgaris) caused by Beet severe curly top virus or closely related
species is a considerable problem in arid growing regions of the western United States. Two
insecticide seed treatments, Poncho Beta (60 g a.i. clothianidin + 8 g a.i. beta-cyfluthrin/100,000
seed) and Gaucho (45 g a.i. imidacloprid/100,000 seed), and four sugar beet hybrids varying in
curly top resistance were evaluated for their influence on the control of curly top in comparison
with untreated checks. Plots were established at two locations in southern Idaho in 2005 and
evaluated for curly top. Moderate to severe curly top due to natural inoculum and leafhopper
infestations occurred at both locations. Untreated, the four hybrids performed as expected with
the fewest curly top symptoms on PM21 and the most on Monohikari. Both insecticide treatments
lowered curly top ratings compared with the untreated check, but Poncho Beta reduced
symptoms more than Gaucho as the season progressed. Poncho Beta led to increased yield and
estimated recoverable sugar across all hybrids at harvest, particularly on the more susceptible
hybrids. When considering the yield parameters for only the most resistant hybrids individually,
Poncho Beta did not always outperform Gaucho. Poncho Beta provided a level of control that
would justify its application as a supplement to host resistance under Idaho conditions.

Item Type: Article
NWISRL Publication Number: 1191
Subjects: Irrigated crops > Sugarbeet > Resistance
Irrigated crops > Sugarbeet > Curly top
Irrigated crops > Sugarbeet > Seed treatment > Insecticide
Depositing User: Users 3 not found.
Date Deposited: 24 Mar 2008 21:26
Last Modified: 01 Nov 2016 15:30
Item ID: 41