scholarly journals Control of Resistant Colorado Potato Beetle in Early Market Potato, Big Lake, Mn, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 115-115
Author(s):  
David Noetzle ◽  
Jennifer Miller
Keyword(s):  
Colorado Potato Beetle ◽  
Block Design ◽  
Potato Field ◽  
Synthetic Materials ◽  
Potato Beetle ◽  
Commercial Potato ◽  
Row Width ◽  
Randomized Complete Block Design ◽  
The Individual ◽  
Early Market

Abstract Continued failure of most insecticides for control of CPB in the Anoka Sand Plains growing area stimulated further comparisons of biologicals, inorganics, and synthetic materials for CPB management. Soils are sands at this location. Plots were established in an irrigated commercial potato field. The individual plot consisted of 4—25 ft rows with a row width of 3 ft. Treatments were arranged in a randomized complete block design and were replicated 4 times. The grower treated all of the field, including the plots, with Thiodan and Asana XL at 1.0 lb and 0.5 lb Al/acre respectively on 8 Jul and 16 Jul. Plot treatments were applied on 25 Jun, 6 and 19 Jul using a CO2 hand sprayer with about 20 gals total material/acre and 40 psi pressure. Larval ratings and defoliation estimates were taken on 6 and 19 Jul. Vines were killed on 3 Aug and yields collected on 18 Aug. The center 2 rows of each plot were harvested for yield.

scholarly journals Colorado Potato Beetle Control on Potatoes with In-Furrow Treatments, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 115-115
Author(s):  
James J. Linduska ◽  
Marylee Ross ◽  
Karen Mulford ◽  
John Nottingham
Keyword(s):  
Colorado Potato Beetle ◽  
Rating Scale ◽  
Block Design ◽  
Compressed Air ◽  
Single Treatment ◽  
Egg Masses ◽  
Row Crop ◽  
Potato Beetle ◽  
Randomized Complete Block Design ◽  
Direct Counts

Abstract ‘Kennebec’ potatoes were planted in 20 foot rows on 25 Apr, ‘94. Plots consisted of a single treatment row. The distance between rows was 64 inches and the distance between plants within the row was 10 inches. Plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk "A" loamy sand. Initial furrow treatments were applied to the seed at the rate of 20 gal per acre with a small watering can. Admire foliar treatments were applied at a rate of 50 gal per acre on 8, 23 and 29 Jun with a custom built compressed air row crop sprayer with each row being covered by 6 drop nozzles delivering 50 gal/acre at 30 psi. In evaluating the treatments, direct counts of the number of Colorado potato beetle adults, larvae and egg masses/10 plants and the % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hills 1978). Yields were taken on 20 Jul from 20-ft of row.

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 Control of Resistant Colorado Potato Beetle, Big Lake, Mn, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 146-146
Author(s):  
David M. Noetzel ◽  
Jennifer Miller
Keyword(s):  
Colorado Potato Beetle ◽  
Potato Field ◽  
Total Material ◽  
Potato Beetle ◽  
Commercial Potato ◽  
Field Plots ◽  
Very High

Abstract A trial was established in an irrigated commercial potato field adjacent to a commercial planting of a NatureMark NewLeafⓇ field. Plots were 4-36 inch rows by 25’ in length. Treatments were arranged in a RCB and replicated 4 times. Treatments were applied on 8 & 26 June and 8 July using a CO2 hand held sprayer. Total material per acre was approximately 20 gal applied using 40 psi. CPB populations were very high at this site and late readings are confused by non-random feeding. Yields were not taken.

scholarly journals Control of Colorado Potato Beetle, 1997A

1998 ◽  
Vol 23 (1) ◽  
pp. 127-127
Author(s):  
Craig A. Longtine ◽  
David W. Ragsdale ◽  
Edward B. Radcliffe
Keyword(s):  
Colorado Potato Beetle ◽  
Potato Field ◽  
Plant Spacing ◽  
Single Treatment ◽  
Randomized Design ◽  
Potato Beetle ◽  
Commercial Potato ◽  
Completely Randomized Design ◽  
Direct Counts ◽  
Flat Fan Nozzle

Abstract This trial was located in a non-irrigated commercial potato field near Hollandale in southern Minnesota. Plots consisted of a single treatment row 25 ft in length bordered on each side by two untreated guard rows. Plant spacing was 36 inches between rows and 12 inches between plants within rows. Treatments were replicated four times in a completely randomized design. Treatments were applied with a CO2-pressurized backpack sprayer fitted with a single Teejet 8003-E flat-fan nozzle delivering 40 gpa/acre at 35 psi. All treatments were applied on 2 Jul. Spraying conditions were windy, but winds were constant. In evaluating the treatments, direct counts of early instars (first and second) and late instars (third and fourth) were made on every plant in each plot on 3 Jul. The data were subjected to analyses of variance following log10(x +1) transformation.

scholarly journals Colorado Potato Beetle Control on Potatoes with Foliar Insecticide Sprays, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 117-117
Author(s):  
James J. Linduska ◽  
Marylee Ross ◽  
Karen Mulford ◽  
John Nottingham
Keyword(s):  
Colorado Potato Beetle ◽  
Rating Scale ◽  
Block Design ◽  
Single Treatment ◽  
Row Crop ◽  
Potato Beetle ◽  
Randomized Complete Block Design ◽  
Control Adult ◽  
Insecticide Sprays ◽  
Direct Counts

Abstract ‘Kennebec’ potatoes were planted in 20 foot rows on 11 Apr, ‘93. Plots consisted of a single treatment row. The distance between rows was 64 inches and the distance between plants within the row was 10 inches. Plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk “A” loamy sand. All spray treatments were mixed in 1.5 gallons of water and applied with a custom built compressed air row crop sprayer. Each row was covered by 6 drop nozzles delivering 50 gal/acre at 30 psi. Treatments were applied 1, 9, 21 and 29 Jun. On 21 and 29 Jun, Kryocide and Novodor plots were sprayed with Asana XL 0.05 lb Al/acre and PBO 8EC 0.375 lb Al/acre to control adult Colorado Potato Beetle. Abamectin plots were treated with Asana XL 0.05 lb Al/acre and PBO 8EC 0.375 lb Al/acre on 21 Jun to control adult CPB. In evaluating the treatments, direct counts of the number of Colorado potato beetle adults, larvae, egg masses/10 plants and the % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hills 1978). Yields were taken on 8 Jul from 20 feet of row.

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.

scholarly journals Colorado Potato Beetle Control, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 112-112
Author(s):  
Casey W. Hoy ◽  
Michael J. Dunlap
Keyword(s):  
Colorado Potato Beetle ◽  
First Generation ◽  
Block Design ◽  
Hollow Cone ◽  
Potato Beetle ◽  
Randomized Complete Block Design ◽  
Vine Killer

Abstract ‘Gemchip’ potatoes were planted 12 May at the Fry Farm, OARDC, Wooster, OH. Plani spacing was 36 inches between rows and 9 inches between plants. Fertilizer was applied at planting (1750 lb/acre 10-20-20). The field was treated on 7 Jun with 0.75 lb/acre of Sencor DF. Fungicide, Dithane at 2.0 lb/acre, was applied at 12, 19, 26 Jul, 3, 18, 26 Aug, 2 Sep, and Penncozeb at 2.0 Vol acre was applied 10 Aug. Paraquat, 1 pt/acre, was applied 8 and 21 Sep as a vine killer. Plots were two rows wide and 50 ft in length, with 12 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 and defoliation averaged between 21 and 25.25%. Foliar applications were applied 22 Jun, 1, 12, 19 Jul, and 10 Aug with a tractor mounted drop nozzle boom sprayer delivering 50 gal/acre at 50 psi with three D-4 hollow cone nozzles/row. Number of eggs, small (instar 1-2), large (instar 3-4) larvae, and adults were counted and percent defoliation was visually estimated in five 1-m lengths of row per plot weekly. Leafhopper nymphs and aphids were sampled by visually inspecting 5 compound leaves per plot on and after 6 Jul.

scholarly journals Colorado Potato Beetle and European Corn Borer Control with Insecticides, Pasquotank Co., Nc, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 131-131
Author(s):  
K. A. Sorensen ◽  
C. Wade Holloway
Keyword(s):  
European Corn Borer ◽  
Block Design ◽  
Fourth Instar ◽  
Row Spacing ◽  
Hollow Cone ◽  
Corn Borer ◽  
Potato Beetle ◽  
Randomized Complete Block Design ◽  
Hill Plots ◽  
Low Rate

Abstract ‘Atlantic’ potatoes were planted in early Mar for Tests 1 and 2 near Elizabeth City, N.C. on 42 inch centers. Plots in Test 1 were 14 ft long and in Test 2 20 ft long, with single row spacing replicated 4 times in a randomized complete block design. Alleys of 5 ft were used between replicates within rows. Treatments in Test 1 and Test 2 were applied with a CO2 pressurized backpack sprayer with a single hollow cone nozzle (18X) operated at 60 psi to deliver 54.5 gal/acre. In Test 1 all treatments were applied on 5, 11 and 18 May. All treatments were applied to Test 2 on 5 May, with the exception of the 1/6 lb rate of Trigard 75WP in combination with Trigard 75WP at 1/3 lb rate which received the combination low rate (1/6 lb) 6 days later. On 11 May applications were applied to all treatments except for Trigard 75WP at the 1/3 lb, 2/3 lb (egg only) and Trigard 75WP 1/3 lb (egg only) plus Trigard 75WP at the 1/6 lb rate. At this time the low rate of the combination Trigard 75WP 1/6 lb rate was applied. Imidan 50WP at 2 lbs and Imidan 50WP at 2 lbs plus Butacide 8EC at 0.5 lbs was applied on 5, 11 and 18 May. Test 1 and Test 2 counts of CPB on 3/hill plots were made 11 and 18 May. Small larvae were assumed to be first and second instar, and large larvae, third and fourth instar. Visual CPB damage ratings were made 18 May and 15 Jun. Visual ECB ratings were made and potatoes harvested and yields recorded 15 Jun.

scholarly journals Onion Maggot Control with Seed Treatments, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 101-101
Author(s):  
D. R. Webb ◽  
A. G. Taylor ◽  
M. L. Hessney ◽  
C. J. Eckenrode
Keyword(s):  
New York ◽  
Block Design ◽  
Seed Treatments ◽  
Onion Maggot ◽  
Row Width ◽  
Randomized Complete Block Design ◽  
Muck Soil

Abstract Seeds were planted 27 Apr in muck soil near Prattsburg, New York, on Franjo Farms. Plots were single rows, 30 ft long replicated 4 times in a randomized complete block design. Germination and damage counts were recorded from the center 20 ft of each row. All seeds were planted using a hand-pushed cone seeder at the rate of 9 seeds/ft. All seeds were treated with Progro at the rate of 25 g of formulation/kg of raw seed to minimize incidence of onion smut (Urocystis cepulae). The standard in-furrow treatment of Lorsban and one check, were treated with Dithane F-45, rather than Progro, applied in-furrow at 2.4 qts formulation in 75 gal water/acre based on a 15-inch row width.

Sign in / Sign up

Export Citation Format

Share Document