scholarly journals Use of Fipronil (Regent) and Imidacloprid (Admire 2F) at Planting to Control Insects in Potatoes, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 166-166
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
The Other ◽  
Row Spacing ◽  
Life Stages ◽  
Eastern Shore ◽  
Bare Ground ◽  
Extension Center

Abstract Potatoes were planted on 27 March at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of 4 rows 25ft long, planted on a 3ft row spacing. Plots were separated from each other by 6ft of bare ground, and each treatment was replicated 4 times in a RCB design. Treatments were applied in furrow prior to planting using a hand-held shaker for the Regent 1.5G formulation and a single nozzle boom backpack sprayer for the other formulations. All CPB life stages on 10 randomly chosen stems/plot were counted weekly. Dates for which there were either significant differences or noticeable trends are recorded in the tables. Numbers of PLH nymphs on 10 randomly picked compound leaves/plot were sampled. Percent defoliation/plot was estimated on the indicated dates in the tables. On 12 July, the center two rows of each plot were harvested and graded to determine yields.

scholarly journals Comparison of Various Soil Insecticides and Rates for Insect Control in Potatoes, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 160-161
Author(s):  
John Speese
Keyword(s):  
European Corn Borer ◽  
Agricultural Research ◽  
Row Spacing ◽  
Life Stages ◽  
Eastern Shore ◽  
Bare Ground ◽  
Corn Borer ◽  
Short Season ◽  
Soil Insecticides ◽  
Extension Center

Abstract Potatoes were planted in two fields on 15 March at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. One field was planted in the short season cultivar ‘Superior’, the other field in the long season cultivar ‘Snowden’. Plots in both fields consisted of 4 rows 25ft long on 3ft row spacing with 6ft of bare ground between plots. Treatments in both fields were applied in furrow prior to planting with a single nozzle boom backpack sprayer. Treatments were replicated 4 times in a RCB design. Foliar sprays (rates, dates and materials indicated in tables) were applied by a tractor-mounted sprayer delivering 40 gal water/acre at 100 psi. Spray decisions were based on the following CPB thresholds, determined by weekly counts on 10 randomly chosen stems/plot: 4 small larvae, 1.5 large larvae, or 0.5 adults/stem. Dates and life stages with significant differences are listed in the tables. Secondary pests on 10 randomly picked compound leaves/plot and percent defoliation were sampled on the dates indicated in the tables. Both fields were sprayed on 2 June with Monitor 4EC (lqt/acre) to control European corn borer.

scholarly journals Foliar Sprays to Control Insects on Potatoes, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 160-160
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Row Spacing ◽  
Eastern Shore ◽  
Bare Ground ◽  
Foliar Sprays ◽  
Extension Center

Abstract Potatoes were planted on 26 Mar at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of 4 rows 20 ft long with 3 ft between-row spacing and 6 ft of bare ground between plots Treatments were replicated 4 times in a RCB.

scholarly journals Azadirachtin (Align) to Control CPB on Potatoes, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 126-126
Author(s):  
John Speese
Keyword(s):  
First Generation ◽  
Agricultural Research ◽  
Block Design ◽  
Evaluation Criteria ◽  
Row Spacing ◽  
Life Stages ◽  
Eastern Shore ◽  
Hollow Cone ◽  
Randomized Complete Block Design ◽  
Extension Center

Abstract Potatoes were planted on 11 April at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of two 25 ft rows on 3 ft row spacing, replicated four times in a randomized, complete block design. An untreated guard row separated each plot. Admire 2F was applied in furrow preplanting using a single hollow cone nozzle boom backpack sprayer. Foliar sprays were applied on the dates indicated in the table using a 3 hollow cone nozzle boom backpack sprayer delivering 60 gal water/acre at 40 psi. On 21 and 23 Jun, the entire test was sprayed out with Vydate L at 0.50 lb(AI)/acre and Furadan 4F at 1.00 lb (AI)/acre to control first generation CPB adults. Evaluation criteria and spray decisions were based on weekly counts of all CPB life stages present on 10 random stems/plot. Sprays were applied if the following thresholds were exceeded: 4 small larvae, 1.5 large larvae, or 0.5 adults/stem. Percent defoliation for each plot was rated on 16 Jun and both rows of each plot were harvested and graded on 20 Jul to determine yields.

scholarly journals Evaluation of New Foliar Materials to Control Insects on Potatoes, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 128-129
Author(s):  
Brian A. Nault ◽  
John Speese
Keyword(s):  
Agricultural Research ◽  
Visual Estimation ◽  
Eastern Shore ◽  
Bare Ground ◽  
Egg Masses ◽  
Insecticide Application ◽  
Untreated Check ◽  
Extension Center

Abstract Potatoes were planted on 3 Apr at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of four 20-ft-long rows. Plots were separated across rows by 3 ft and within rows by 6 ft of bare ground. The experiment had 5 treatments plus an untreated check arranged in a RCB design replicated 4 times. Insecticide application timings were targeted for control of CPB, not ECB. Initial applications were made on 29 May when small (LI + L2) and large (L3 + L4) CPB larvae were present and many of the egg masses in the field had hatched. One additional application of each treatment was made on 12 Jun. Insecticides were applied using a propane-powered backpack sprayer equipped with 6 flat-fan nozzles/2 rows calibrated to deliver 46 gpa at 40 psi. On 13 Jun and 1 Jul, potato leafhoppers, Empoascafabae, were controlled with Dimethoate 4EC at 0.25 lb (AI)/acre using a tractor-mounted sprayer that deliv-ered 40 gal. of spray/acre at 100 psi. Data were taken weekly from 3 through 30 Jun from the center 2 rows of each plot and included the following: the number of CPB adults, egg masses, small and large larvae/10 randomly selected stems in each plot, the number of ECB damaged stems/20 randomly chosen stems per plot, and a visual estimation of percent defoliation within each plot. The center 2 rows of each plot were harvested on 10 Jul and tubers were graded and weighed.

scholarly journals Foliar Sprays to Control Insects in Wheat, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 318-318
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Evaluation Criteria ◽  
Aphid Species ◽  
Eastern Shore ◽  
Bare Ground ◽  
Foliar Sprays ◽  
Compressed Gas ◽  
Extension Center ◽  
Flat Fan Nozzle

Abstract Wheat was planted on 2 Nov, 1994, at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Plots were 25 ft long by 5 ft wide, with 7 inch spacing between rows. Each plot was separated from each other by 3 ft of bare ground and replicated 4 times in a RCB design. Insect pressure from all species was low this year. Treatments were applied on 5 May using a propane compressed gas backpack sprayer with a 3 flat fan nozzle boom which delivered 20 gal water/acre at 40 psi. Evaluation criteria consisted of counts of insects present on 6 ft of row. EGA was the dominant aphid species with low numbers of BCOA present. Numbers of both species were analyzed together as a complex.

scholarly journals Foliar Sprays to Control Insects in Fall Peppers, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 136-137
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Evaluation Criteria ◽  
Row Spacing ◽  
Plant Spacing ◽  
Eastern Shore ◽  
Hollow Cone ◽  
Foliar Sprays ◽  
Marketable Fruit ◽  
Extension Center

Abstract Peppers were transplanted on 31 Jul at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of two 25ft long rows with 3ft between row spacing and 1ft between plant spacing. Each plot was bordered on each side by an untreated guard row and replicated 4 times in a RCB design. Treatments were applied on the dates indicated in the table with a backpack sprayer using 3 hollow cone nozzles/row and delivering 60 gal water/acre at 40 psi. Evaluation criteria consisted of hand-harvest of marketable fruit on 10 healthy, uniform-sized plants/row (.00062 acre) and GPA counts on 5 randomly picked leaves/plot on 06 Oct. Harvesting was done in this manner due to uneven stands in some plots due to the drought.

scholarly journals Foliar Sprays to Control Insects on Spring Peppers, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 137-137
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Evaluation Criteria ◽  
Row Spacing ◽  
Eastern Shore ◽  
Foliar Sprays ◽  
Marketable Fruit ◽  
Extension Center

Abstract Peppers were transplanted on 22 May at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of two 25ft rows, planted on 3ft row spacing. Plots were separated from each other by an untreated guard row. Each treatment was replicated 4 times in a RCB design. Treatments were applied with a 3 nozzle boom backpack sprayer delivering 60 gal water/acre at 40 psi. Treatments were applied weekly beginning 19 Jul through 16 Sep. The aphidicides CGA 215944 and Provado were added to the pyrethroid treatments indicated in the table on 1,8, and 16 Sep after GPA populations had built up. Spod X was added to the Pounce treatments on the last four application dates to control BAW. The gallonage was increased to 73 gpa for the last 3 applications due to the growth of the plants. Evaluation criteria consisted of hand-harvests of market sized fruits from the more uniform row of each 2 row plot on the dates indicated in the table. This fruit was graded to remove any ECB or BAW damaged fruit and the remaining marketable fruit was weighed to determine yields. Numbers of GPA on 5 randomly picked leaves/plot were counted on the dates indicated in the table.

scholarly journals New and Labeled Foliar Materials and Tank Mixesl To Control Insects on Potatoes, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 129-130
Author(s):  
Brian A. Nault ◽  
John Speese
Keyword(s):  
Untreated Control ◽  
Agricultural Research ◽  
Visual Estimation ◽  
Eastern Shore ◽  
Bare Ground ◽  
Egg Masses ◽  
Insecticide Application ◽  
Extension Center

Abstract Potatoes were planted on 3 Apr at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of four 20-ft-long rows. Plots were separated across rows by 3 ft and within rows by 6 ft of bare ground. There were 6 treatments plus an untreated control arranged in a RCB design replicated 4 times. Insecticide application timings were targeted for control of CPB, not ECB. Initial applications were made on 28 May when small (LI + L2) and large (L3 + L4) CPB larvae were present and many of the egg masses in the field had hatched. Two additional applications were made at 14-d intervals (11 and 30 Jun). Insecticides were applied using a propane-powered backpack sprayer equipped with 6 flat-fan nozzles/2 rows calibrated to deliver 46 il. of spray/acre at 40 psi. Data were taken weekly from 3 through 30 Jun from the center 2 rows of each plot and included the following: the number of CPB adults, egg masses, small and large larvae/10 randomly selected stems in each plot, the number of ECB-damaged stems/20 randomly chosen stems per plot, and a visual estimation of percent defoliation within each plot. The center 2 rows of each plot were harvested on 10 Jul and tubers were graded and weighed.

scholarly journals Insecticides to Control Cucumber Beetles in Spring and Fall, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 130-130
Author(s):  
John Speese
Keyword(s):  
Heavy Rainfall ◽  
Agricultural Research ◽  
Evaluation Criteria ◽  
Eastern Shore ◽  
Bare Ground ◽  
Hollow Cone ◽  
Yield Data ◽  
Foliar Sprays ◽  
Extension Center ◽  
Spring Planting

Abstract Cucumbers were planted on 17 Jun and 12 Aug at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of 2 rows 25 ft long with 5 ft spacing between rows. Plots were separated from each other by 10 ft of bare ground. Treatments were replicated 4 times in a RCB. Prior to planting, the Admire and Furadan treatments were applied in furrow using a single nozzle boom backpack sprayer. The foliar sprays were applied with a 3 hollow cone nozzle boom backpack sprayer delivering 45 gpa at 40 psi. The Adios AG treatments were broadcast over the appropriate rows using a hand-held shaker on the same dates as the foliar sprays. Application dates were 18 and 24 Jul and 2 Aug for the spring planting and 30 Aug and 9 and 23 Sep for the fall planting. Evaluation criteria were: beetle counts on a 6 ft row section of each plot. Dates with significant differences are recorded in the tables. No attempt was made to obtain yield data, because the growth of the crop across the field was highly variable due to heavy rainfall, especially in the spring planting.

scholarly journals Comparison of Viral, Bacteriological, and Standard Insecticides for Control of the Fruitworm Complex in Fall Tomatoes, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 189-190
Author(s):  
John Speese
Keyword(s):  
Disease Control ◽  
Agricultural Research ◽  
Row Spacing ◽  
Eastern Shore ◽  
Hollow Cone ◽  
Extension Center

Abstract Tomatoes were transplanted into two fields on 27 Jul at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of a single 25ft row with 5ft between row spacing. Plots were replicated 3 times in a RCB design and separated from each other by untreated guard rows. The design in both fields was the same except for the number of treatments. Treatments were applied with a backpack sprayer using 3 hollow cone nozzles/row and delivering 45 gal waterlacre at 40 psi. Application dates for each field are indicated in the tables. Bravo 720 at 1.5pVacre was added to each treatment and the checks on 26 Sep and 02 Oct for disease control. On 9 Oct (Field I) and 16 Oct (Field 11). 25 green fruits were randomly picked from each plot and examined for worm damage.

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