scholarly journals COLORADO POTATO BEETLE CONTROL WITH SEED-PIECE TREATMENTS, 1999

2000 ◽  
Vol 25 (1) ◽  
Author(s):  
P. M. Denke ◽  
S. L. Blodgett ◽  
K. Kephart
Keyword(s):  
Seed Piece ◽  
Colorado Potato Beetle ◽  
Potato Beetle

scholarly journals Colorado Potato Beetle Control, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 110-110
Author(s):  
Casey W. Hoy ◽  
Michael J. Dunlap
Keyword(s):  
Seed Piece ◽  
Colorado Potato Beetle ◽  
First Generation ◽  
Block Design ◽  
Plant Spacing ◽  
Single Application ◽  
Hollow Cone ◽  
Potato Beetle ◽  
Randomized Complete Block Design ◽  
Vine Killer

Abstract ‘Gemchip’ potatoes were planted 26 May at the Fry Farm, OARDC, Wooster, OH. Plant spacing was 36 inches between rows and 9 inches between plants. Three Admire 2F seed piece treatments were applied at planting using a CO2 compression sprayer at 40 psi with an 8004 flat fan nozzle delivering the insecticide into the seed furrow. The field was treated on 16 Jun with 0.75 lb/ acre of Sencor DF. Fungicide, Dithane at 2.0 lb/acre, was applied 9 Aug. Paraquat, 1 pt/acre, was applied 7 Sep as a vine killer. Plots were two rows wide and 40 ft in length, with 10 ft alleys separating plots and 6 ft alleys separating blocks. Treatments were arranged in a randomized complete block design. Foliar treatments were initiated when the first generation larvae were increasing in the plots in early Jul. Foliar applications were made 3 and 12 Jul and 3 and 12 Aug. The Trigard single application treatment was applied only on 3 Jul and 3 Aug. Foliar treatments were applied with a tractor mounted drop nozzle boom sprayer delivering 50 gal/acre at 50 psi with three D-4 hollow cone nozzles/row. Bond spreader sticker was added at 4 oz/ 100 gal solution to all rates of the following insecticides: Prokill Cryolite 96, AC303,630, M-Trak, and Novodor. Number of eggs, small larvae (instar 1-2), large larvae (instar 3-4), and adults were counted, and percent defoliation was visually estimated, in five 1-m lengths of row per plot approximately five days after each application.

scholarly journals COLORADO POTATO BEETLE AND GREEN PEACH APHID CONTROL WITH SEED-PIECE TREATMENTS, 2000

2001 ◽  
Vol 26 (1) ◽  
Author(s):  
P. M. Denke ◽  
S. L. Blodgett ◽  
K. Kephart ◽  
J. Mickelson
Keyword(s):  
Seed Piece ◽  
Colorado Potato Beetle ◽  
Green Peach Aphid ◽  
Potato Beetle ◽  
Aphid Control

scholarly journals Colorado Potato Beetle Control; Admire 2F Soil Application Depth, Big Lake, Mn, 1994

1996 ◽  
Vol 21 (1) ◽  
pp. 148-148
Author(s):  
David M. Noetzel ◽  
Tom Wingard
Keyword(s):  
Seed Piece ◽  
Colorado Potato Beetle ◽  
Soil Application ◽  
Potato Beetle ◽  
Foliar Treatment ◽  
Plant Emergence ◽  
Small Trial ◽  
Application Depth ◽  
Commercial Field

Abstract A small trial was established in an irrigated commercial field to determine efficacy of Admire 2F equivalent dosage with, and at varying distances above, the seed piece. Soils were sandy loams. A plot was a single 25 ft row. Treatments were arranged in an RCB design, replicated 4 times. The field was planted on 5 May, seed pieces uncovered on 11 May, re-covered to appropriate depth and treated with Admire 2F at a soil dosage of 1.3 fl ozl1000 row ft in 40 gal/ acre water. The original 6 deep ridge was then restored. Plant emergence began about 20 May but appeared uneven so % emergence data were recorded. The foliar treatment was delayed until slightly more than 15% larval defoliation was present. Foliar treatment dates were 29 June, 6, 13 & 20 July.

scholarly journals AFLP-Based Genetic Linkage Map of the Colorado Potato Beetle Leptinotarsa decemlineata: Sex Chromosomes and a Pyrethroid-Resistance Candidate Gene

Genetics ◽  
2001 ◽  
Vol 158 (2) ◽  
pp. 695-700 ◽  
Author(s):  
David J Hawthorne
Keyword(s):  
Candidate Gene ◽  
Linkage Map ◽  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Sex Chromosome ◽  
Pyrethroid Resistance ◽  
Codominant Markers ◽  
Potato Beetle

Abstract A genetic linkage map was constructed from an intraspecific cross of the Colorado potato beetle, Leptinotarsa decemlineata. This is an initial step toward mapping the loci that underlie important phenotypes associated with insect adaptation to an agroecosystem. The map was made with 172 AFLP and 10 anonymous codominant markers segregating among 74 backcross (BC1) individuals. Markers were mapped to 18 linkage groups and a subset of the markers with a mean intermarker distance of 11.1 cM is presented. A pyrethroid-resistance candidate gene, LdVssc1, was placed onto the map as well. The sex chromosome was identified by exploiting the XO nature of sex determination in this species using patterns of variation at LdVssc1 and the codominant markers.

scholarly journals Field Efficacy of Steinernema sp. (Rhabditida: Steinernematidae) on the Colorado Potato Beetle Overwintering Generation

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1464
Author(s):  
Maja Čačija ◽  
Renata Bažok ◽  
Majda Kolenc ◽  
Tena Bujas ◽  
Zrinka Drmić ◽  
...  
Keyword(s):  
Colorado Potato Beetle ◽  
First Generation ◽  
Control Measures ◽  
Recommended Dose ◽  
Steinernema Feltiae ◽  
First Year ◽  
Potato Beetle ◽  
Field Efficacy ◽  
Second Year ◽  
Economic Pest

Colorado potato beetle (CPB) is an economic pest of potato that has developed resistance to all classes of chemical insecticides, thus requiring alternative control measures. As a potential solution, entomopathogenic nematodes (EPNs) have proven effective in suppressing this pest, but their efficacy against overwintering generations of CPB in Croatia has not been sufficiently researched. The aim of this two-year (2018–2019) field study was to determine the efficacy of Steinernema feltiae and Steinernema carpocapsae applied to overwintering CPB adults. EPNs were applied at three doses (7.5 mil./10 m2, 5.0 mil./10 m2 (the recommended dose) and 2.5 mil./10 m2) by watering the soil where the adults were overwintering. The first-year results were satisfactory for both EPNs: the efficacy of S. feltiae ranged from 79.03% to 100.00%, while the efficacy of S. carpocapsae ranged from 77.32% to 96.22%. In the second year, the highest efficacy (69.57%) was obtained using the recommended dose of S. feltiae. Although the results are not consistent across the two years of our study and suggest further research, they indicate that EPNs have great potential in controlling overwintering CPB generations to reduce first generation abundance and damage, and also to prevent the spread of new generations to surrounding potato growing areas.

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