scholarly journals Use of Neem-Based and Bacillus Thuringiensis Foliar Sprays to Control Colorado Potato Beetle on Potatoes, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 133-133
Author(s):  
John Speese
Keyword(s):  
Block Design ◽  
Potato Leafhopper ◽  
Plant Spacing ◽  
Eastern Shore ◽  
Agricultural Experiment Station ◽  
Hollow Cone ◽  
Potato Beetle ◽  
Randomized Complete Block Design ◽  
Compressed Gas ◽  
Agricultural Experiment

Abstract Potatoes were planted on 15 Apr at the Eastern Shore Agricultural Experiment Station, Painter, VA. Each plot consisted of a 25 ft row bordered on each side by an untreated guard row, replicated 4 times in a randomized complete block design. Plant spacing was 10 inches between plants with 36 inches between rows. Sprays to control CPB were applied on the dates indicated in the table. On 15 and 22 Jun, the Novodor treatment was sprayed with Asana XL (0.04 lb AI) due to the presence of CPB large larvae and Fl adults. From 15 Jun on, Cygon 400 (0.25 lb AI) was added to the ATI 720 treatments to control potato leafhopper (Empoasca fabae). Sprays were applied with a propane compressed gas backpack sprayer using a 3 nozzle hollow cone (D4—5) boom and delivering 60 gal water/acre at 40 psi.

scholarly journals Foliar Sprays for Insect Control in Tomatoes, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 154-154
Author(s):  
John Speese
Keyword(s):  
Block Design ◽  
Evaluation Criteria ◽  
Insect Control ◽  
Eastern Shore ◽  
Agricultural Experiment Station ◽  
Hollow Cone ◽  
Randomized Complete Block Design ◽  
Agricultural Experiment ◽  
Living Leaf ◽  
Marketable Fruit

Abstract Tomatoes were transplanted on 23 Jul at the Eastern Shore Agricultural Experiment Station, Painter, VA. Each plot consisted of a 25 ft. row, bordered on each side by an untreated guard row, and replicated 4 times in a randomized, complete block design. Spacing was 5 ft. between rows. Sprays were applied weekly beginning 20 Aug through 23 Sep using a 3 nozzle hollow cone boom backpack sprayer delivering 45 gal water/acre at 40 psi. Evaluation criteria consisted of counts of new or living leaf mines present on five marked plants/plot on the dates indicated in the table, and number of marketable fruit from the same five plants harvested on 8 and 22 Sep.

scholarly journals Use of Fipronil 80Wg Foliar Sprays for Insect Control in Potatoes, Spring, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 136-136
Author(s):  
John Speese
Keyword(s):  
Block Design ◽  
Evaluation Criteria ◽  
Insect Control ◽  
Life Stages ◽  
Eastern Shore ◽  
Agricultural Experiment Station ◽  
Foliar Sprays ◽  
Randomized Complete Block Design ◽  
Compressed Gas ◽  
Agricultural Experiment

Abstract Potatoes were planted on 16 Apr at the Eastern Shore Agricultural Experiment Station, Painter, VA. Each plot consisted of four 25 ft. long rows, replicated 4 times in a randomized, complete block design. Sprays were applied beginning on 17 May through 23 Jun using a propane compressed gas back pack sprayer delivering 40 gal water/acre at 40 psi. A total of three Fipronil 80WG applications was made every two weeks, and Asana XL + PBO was applied weekly. Evaluation criteria consisted of counts of all CPB life stages present on 5 randomly chosen stems/plot 3 or 4, 7, and 14 days after each Fipronil 80WG application. Aphids and leafhoppers were sampled on 10 randomly picked leaves/plot on the dates indicated, and estimates were taken on hopper burn and defoliation. The plots were harvested and graded to determine yields.

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 Soil and Foliar Treatments to Control Insects in Sweet Potatoes, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 146-146
Author(s):  
John Speese
Keyword(s):  
Block Design ◽  
Light Trap ◽  
Eastern Shore ◽  
Agricultural Experiment Station ◽  
Sweet Potatoes ◽  
Foliar Sprays ◽  
Corn Rootworms ◽  
Randomized Complete Block Design ◽  
Agricultural Experiment ◽  
Trap Catches

Abstract Sweet potatoes were planted on 22 Jun at the Eastern Shore Agricultural Experiment Station, Painter, VA. Each plot consisted of 3 rows 20 ft. long with 3 ft. spacing between rows. Plots were separated by an untreated guard row and replicated 6 times in a randomized, complete block design. Mocap treatments were applied and incorporated on 10 Jun to avoid phytotoxicity. Lorsban and Temik were applied and incorporated immediately prior to planting. Mocap and Lorsban were broadcast using a 6 flat fan nozzle boom backpack sprayer delivering 20 gal water/acre. Temik was applied in a 12 inch band using a hand-held shaker. Sevin foliar sprays were started on 14 Jul, after the first clickbeetles (wireworm adults) were caught in the black light trap at Painter. Clickbeetle light trap catches were used as a basis for determining dates for the Sevin threshold sprays. The Sevin schedule sprays were applied weekly from 14 Jul through 30 Aug. The Sevin threshold sprays were applied on 14 and 27 Jul, and 9 and 30 Aug. Foliar sprays were applied in 40 gal water/acre using the same sprayer described above. On 18 Oct, the center row of each plot was harvested and 25 market-sized roots were randomly selected to determine insect damage. Damage from wireworms, southern corn rootworms (Diabrotica) and Systena flea beetles is very similar and thus recorded and analyzed as a complex (WDS damage).

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 Head Cabbage, Microbial Control of Cutworm, Webworm, Cluster Caterpillar and Gardenlooper, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 66-66
Author(s):  
R. Muniappan ◽  
I.U. Silva-Krott
Keyword(s):  
Block Design ◽  
Microbial Control ◽  
Bare Soil ◽  
Agricultural Experiment Station ◽  
Experiment Station ◽  
Randomized Complete Block Design ◽  
Agricultural Experiment ◽  
The University ◽  
Head Cabbage ◽  
University Of Guam

Abstract The experiment was conducted at the Agricultural Experiment Station of the University of Guam, at the Inarajan site. The experiment was a randomized complete block design with four treatments and four replications. Each treatment consisted of four rows of head cabbage with eight plants on each row. Replications were separated by 60 cm of bare soil. Cabbage seedlings were planted 2 Mar 1993

scholarly journals Soil Insecticides for Insect Control in Field Corn, Painter, Va 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 212-212
Author(s):  
John Speese
Keyword(s):  
Insect Control ◽  
Plant Spacing ◽  
Eastern Shore ◽  
Agricultural Experiment Station ◽  
Experiment Station ◽  
Field Corn ◽  
No Till ◽  
Agricultural Experiment ◽  
Soil Insecticides

Abstract Field corn was planted no-till on 7 May at the Eastern Shore Agricultural Experiment Station, Painter, VA. Treatments were applied pre-planting in the manner indicated in the table. Each plot consisted of four 25 ft rows bordered on each side by an untreated guard row. Plant spacing was 30 inches between rows with 9-10 inches between plants. Stand counts averaged 36 plants per 25 ft row on 28 May. The number of damaged whorls was counted in the 2 center rows (50 ft total) of each plot on 4 Jun and the number of damaged (stunted or twisted) stalks was counted in the 2 center rows (50 ft total) of each plot on 23 Jun.

scholarly journals Comparison of Various Classes of Foliar Insecticides for Worm Control in Fall Cabbage, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 79-79
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Block Design ◽  
Evaluation Criteria ◽  
Eastern Shore ◽  
Hollow Cone ◽  
Plot Sampling ◽  
Randomized Complete Block Design ◽  
Worm Control ◽  
Extension Center

Abstract Cabbage was transplanted in two fields on 10 Aug at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. In both fields, each plot consisted of a single 25 ft × 3 ft row, replicated four times in a randomized, complete block design. Plots were separated by untreated guard rows. Sprays were applied on the dates indicated in the tables using a 3 hollow cone nozzle boom backpack sprayer delivering 60 gal water/acre at 40 psi. Evaluation criteria consisted of counts of all worm species present and final market ratings on 5 randomly chosen plants/plot. Sampling dates for each field are indicated in the tables. Market ratings were estimated according to Greene et al. in J. Econ. Entomol. 62(4): 798-800. A rating greater than 3 is considered unmarketable.

scholarly journals Control Of Green Peach Aphid On Potato, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 172-172
Author(s):  
Robert A. Suranyi ◽  
Edward B. Radcliffe ◽  
Patricia Cordova
Keyword(s):  
Late Blight ◽  
Green Peach Aphid ◽  
Potato Leafhopper ◽  
University Of Minnesota ◽  
Agricultural Experiment Station ◽  
Egg Hatch ◽  
Potato Beetle ◽  
Agricultural Experiment ◽  
The University ◽  
Spray Applications

Abstract Potatoes were planted 15 May at the University of Minnesota Agricultural Experiment Station, Rosemount, MN. Plots were 1 row, 25 ft long, and separated from other plots by 6 ft of fallow. Treatments were arranged in a RCB design with 4 replications. Treatments for GPA control were applied on 9 Aug, except for Admire 2F which was applied in-furrow at planting prior to closing the seed bed. All spray applications for GPA were made using a CO2 pressurized sprayer fitted with a Teejet 8003-E flat fan nozzle, delivering 60 gal/acre at 35 psi. Late blight control was achieved by 5 spray applications of Bravo 500 (1 pt/acre) on 28 Jun; 7, 13 and 29 July; and 8 Aug, and 3 applications of Ridomil/Bravo 81WP (1 lb/acre) on 20 Jul; 2 and 18 Aug. One application of Novodor (3 qts/acre) was targeted against Colorado potato beetle (CPB) at 30% egg hatch on 17 June. Asana 0.66XL (9.6 fl oz/acre) applications were applied on 22 and 28 June; 12 and 29 Jul to enhance GPA populations for the purpose of this test. Asana treatments also controlled CPB and potato leafhopper. Samples of 10 lower leaves were taken from the center plants in each plot and GPA were counted. GPA counts were made on 10, 17, and 24 Aug; 1, 7 and 14 DAT respectively.

scholarly journals Control of Potato Leafhopper on Potatoes Using Reduced Ratesl of Insecticides, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 137-137
Author(s):  
Robert A. Suranyi ◽  
Craig A. Longtine ◽  
David W. Ragsdale ◽  
Edward B. Radcliffe
Keyword(s):  
Late Blight ◽  
Post Treatment ◽  
Potato Leafhopper ◽  
Plant Spacing ◽  
University Of Minnesota ◽  
Agricultural Experiment Station ◽  
Minnesota Agricultural Experiment Station ◽  
Agricultural Experiment ◽  
Pre Treatment ◽  
The University

Abstract Potatoes were planted 19 May at the University of Minnesota Agricultural Experiment Station, Rosemount, MN. Plant spacing was 36 inches between rows and 12 inches between plants within rows. Treatments were arranged in a RCB design with 3 replications. Plots were 8 rows wide by 40 ft long, separated by 12 ft of al-falfa borders on all sides to enhance PLH population. Thirty-five midplant leaves were sampled from the center four rows of each plot. Pre-treatment counts and treatment applications were made 29 Jul. All treatments were applied with a tractor-mounted Brittonya boom sprayer delivering 45 gpa at 90 psi with 3 nozzles per row. Post-treatment counts of PLH nymphs were made 30 Jul, 24 hours after treatment. Early and late blight were controlled by eight applications of chlorothalonil. Analyses of variance were calculated following transformation of the data using logl0(x).

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