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 Colorado Potato Beetle Control, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 144-145
Author(s):  
E.. McEnhill ◽  
E. Grafius ◽  
J. Sirota ◽  
C. Brunt ◽  
J. Ferrigan ◽  
...  
Keyword(s):  
Colorado Potato Beetle ◽  
First Generation ◽  
Second Generation ◽  
Row Spacing ◽  
Bare Ground ◽  
Light Rain ◽  
Potato Beetle ◽  
Foliar Treatment

Abstract Fifteen insecticide treatments were tested at the MSU Montcalm Research Farm, in Entrican, MI, for their control of Colorado potato beetles (CPB). ‘Snowden’ potatoes were planted 12 inches apart with a 34 inch row spacing on 10 May. Treatments were replicated four times and assigned to plots in a RCB design. The plots measured 40 feet long and were three rows wide. There were at least two rows of bare ground between plots and five feet of untreated potatoes between plots in the same rows. The Admire and Mocap treatments were applied in furrow at planting. The first foliar treatment was applied, at 25% CPB hatch, on 18 June using a tractor-mounted sprayer (30 gal/acre, 40 psi). Subsequent first generation sprays were applied on 29 June and 7 July. Light rain occurred on 7 July before the insecticides had a chance to dry. Insecticide effectiveness was determined by counting the various stages of CPB on two randomly chosen plants from the middle row of each plot. Counts were done on 12 and 23 Jun and 3 and 12 July. Second generation methods were the same as for the first generation with sprays occuring on 19 July, 26 July and 2 Aug and counts on 18, 24 and 31 Jul. All plots other than the two Trigard treatments were sprayed with a maintenance spray of Imidan and PBO. Each plot was assessed for percent defoliation on 3 July and 9 August. The middle row of potatoes from each plot was harvested on 22 August, separated by size and weighed.

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 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 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, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 113-113
Author(s):  
K. Kearns ◽  
E. Grafius ◽  
M. Bommarito ◽  
C. Brunt ◽  
J. Ferrigan ◽  
...  
Keyword(s):  
Colorado Potato Beetle ◽  
Block Design ◽  
Piperonyl Butoxide ◽  
Row Spacing ◽  
Potato Seed ◽  
Bare Ground ◽  
Potato Beetle ◽  
Randomized Complete Block Design ◽  
Foliar Treatment

Abstract ‘Snowdon’ variety potatoes were used to test nineteen insecticides for control of Colorado potato beetle (CPB) at the MSU Montcalm Research Farm in Entrican, MI. Potatoes were planted 12 inches apart with a 34 inch row spacing on 4 May. Plots were 40 feet long by three rows wide and arranged in a randomized complete block design with four replications. Plots were separated by at least 5 feet of bare ground. Fosthiazate in-furrow treatments were incorporated into the soil through rototill on 3 May. An Admire treatment was applied in furrow on the potato seed with a CO2 backpack sprayer (8005 flat fan single nozzle, 30 psi) on 4 May. Foliar treatment applications were applied on 16, 23 Jun, 1 and 7 Jul using a tractor-mounted sprayer (30 gal/acre, 40 psi). Preplant Fosthiazate treated plots also received foliar treatments of Asana and piperonyl butoxide (PBO). Rain occurred on 24 Jun and 7 Jul within hours after spraying. Insecticide effectiveness was determined through postspray counts for all stages of CPB (small larvae = 1 st and 2nd instar, large larvae = 3rd and 4th instar) by searching two randomly selected plants from the middle row of each plot on 21, 28 Jun, 5 and 12 Jul. Plots were assessed for percent defoliation on 28 Jun, 5, 8 and 12 Jul. Plots were sprayed 13 Jul with Imidan and PBO (except for two of the Agrimek plots) to control summer adults emerging from poor treatments and migrating toward other research plots. All plots were sprayed for the same reason with Agrimek on 23 Jul and 11 Aug. Potatoes in the middle row of each plot were harvested on 2 Sept. Potatoes were separated by size.

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