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 and Green Peach Aphid Control with Soil Applied Insecticides and Foliar Sprays, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 162-163
Author(s):  
Robert L. Stoltz ◽  
Nancy A. Matteson
Keyword(s):  
Seed Piece ◽  
Foliar Application ◽  
Green Peach Aphid ◽  
Sweet Pepper ◽  
Row Spacing ◽  
Potato Beetle ◽  
Whole Plant ◽  
Aphid Control ◽  
Untreated Check ◽  
Extension Center

Abstract Experimental plots were established on the UI Research and Extension Center, Kimberly, Idaho. Potatoes were planted on 25 Apr and irrigated by solid set sprinkler. The soil type was Portneuf silt loam. Eight treatments and one untreated check plot were replicated four times in a RCB design. Individual plots were 4 rows (36 inch row spacing) wide by 25 ft long with 5 ft alleyways separating the plots. Green peach aphids were mass reared on greenhouse sweet pepper plants (‘California Wonder’) for release into individual plots. Aphid releases were made into test plots on 27 Jun and again on 8 Jul. A total of four heavily infested plants were released per plot. On a weekly basis, adults, large larvae (3-4 instar), small larvae (1 -2 instar), and egg masses of CPB were counted and percent defoliation assessed from whole plant inspections of the center 5 hills of the middle 2 plot rows. GPA counts were made on 20 leaves chosen at random from the top, middle and bottom sections of plants in the center two rows of each plot. Admire treatments were applied at plant in-furrow over the seed piece on 25 Apr. Temik and Thimet were applied in-furrow with the seed piece also at planting. Furadan was applied in a six-inch banded S over the plants at 4-inch rosette stage of plant growth on 4 Jun using a CO2 pressurized backpack sprayer. All foliar treatments were broadcast on 29 Jun using the backpack CO2 sprayer at a rate of 20 gpa (30 psi, with 4, 10X hollow cone nozzles). On 11 Jul, a second foliar application of Metasystox-R + Asana, Monitor and Alert was made. Data were analyzed using ANOVA and Newman-Keuls multiple means comparison.

Potato Insect Control, Ft. Collins, Co 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 138-138
Author(s):  
Whitney Cranshaw ◽  
D. Casey Sclar ◽  
Aaron Spriggs ◽  
Jason Bishop
Keyword(s):  
Colorado Potato Beetle ◽  
Green Peach Aphid ◽  
Flea Beetle ◽  
Field Research ◽  
Egg Laying ◽  
Potato Beetle ◽  
Two Samples ◽  
Plant Emergence ◽  
Potato Insect ◽  
The Hill

Abstract Plots were established at the Department of Horticulture Field Research Center; north of Ft. Collins, CO. Planting was done 12 May, establishing a series of 2-row plots, 30-ft in length. Plot design was a RCB with 4 replications. Admire applications were made to the soil along the sides of the hills and incorporated to a depth of 1-2 inches with a hand cultivator on 5 June, shortly after plant emergence. Soil applications of Granusol Magnesium were applied and incorporated into the hill on 24 June and 24 July. All foliar treatments were applied 27 June and 14 July (immediately after plot evaluations) using a CO2 compressed air sprayer with a single flat fan nozzle delivering 20 gal gal/acre at 45 psi in a series of passes that covered the top and both sides of each row. At the time of original treatment Colorado potato beetle mating and egg laying was common, with some recently hatched larvae present. Evaluations of Colorado potato beetle (CPB) larvae were made 30 June and 13 July by counting all larvae on the center 20-ft of each row. Populations dropped sharply after this point, preventing subsequent sampling. Potato flea beetle samples were taken on 4 dates, making 6 sweeps row (12 sweeps/plot) on the first two samples and 8 sweeps/plot on the subsequent samples. Green peach aphid and potato/tomato psyllid were enumerated by counting insects on 35 leaves per plot.

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 GREEN PEACH APHID CONTROL WITH SEED-PIECE TREATMENTS, 1999

2000 ◽  
Vol 25 (1) ◽  
Author(s):  
P. M. Denke ◽  
S. L. Blodgett ◽  
K. Kephart
Keyword(s):  
Seed Piece ◽  
Green Peach Aphid ◽  
Aphid Control

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 RESISTANCE TO THE COLORADO POTATO BEETLE AND GREEN PEACH APHID IN INTERSPECIFIC SOLANUM HYBRIDS.

HortScience ◽  
1990 ◽  
Vol 25 (4) ◽  
pp. 400I-400
Author(s):  
Jim Mooney ◽  
Shelley H. Jansky
Keyword(s):  
Colorado Potato Beetle ◽  
Interspecific Hybrids ◽  
Green Peach Aphid ◽  
Wild Potato ◽  
Norgold Russet ◽  
Feeding Period ◽  
Wild Potato Species ◽  
Potato Beetle ◽  
Feeding Trials ◽  
Diploid Level

Resistance to the Colorado potato beetle (CPB) and green peach aphid (GPA) would be valuable if it could be effectively transferred from wild potato species to the cultivated potato. Eighteen diploid interspecific hybrids have been developed using Solanum tuberosum Gp. Tuberosum haploids (2n = 2x = 24) and the diploid wild species S. berthaultii (ber), S. chacoense (CHC), S. jamesii (jam), and S. tarijense (tar). Twenty-five genotypes per family were screened for resistance to CPB and GPA. Feeding trials were carried out on intact leaves. The degree of resistance to CPB was determined by the stage of instar development and weight of larvae after a four day feeding period; resistance to GPA was evaluated by aphid reproduction and survival after a fifteen day feeding period. Highly CPB or GPA resistant clones, compared to `Norgold Russet',, have been identified thus far. Some clones express high levels of resistance to both CPB and GPA. Crosses between resistant clones and S. tuberosum will be carried out at the diploid level in an attempt to combine resistance with good tuberization qualities.

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