scholarly journals Use of Pymetrozine (CGA-215 944) to Control Cabbage Aphids in Collards, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 83-83
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Block Design ◽  
Eastern Shore ◽  
Hollow Cone ◽  
Randomized Complete Block Design ◽  
Extension Center ◽  
Cabbage Aphids

Abstract This study was conducted in a commercial collards field planted on 17 Aug near the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of a single 25 ft × 3 ft row, bordered on each side by an untreated guard row, and replicated four times in a randomized, complete block design. Treatments were applied 15 Sep with a single hollow cone nozzle boom backpack sprayer delivering 60 gal water/acre at 40 psi and the total number of cabbage aphids was counted 20 and 28 Sep on 10 randomly picked leaves/plot.

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 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 Comparison of Biological and Standard Materials to Control Insects in Fall Tomatoes, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 188-189
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Block Design ◽  
Evaluation Criteria ◽  
Eastern Shore ◽  
Hollow Cone ◽  
Ripe Fruit ◽  
Green Fruit ◽  
Randomized Complete Block Design ◽  
Control Disease ◽  
Extension Center

Abstract Tomatoes were transplanted on 27 Jul at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of a single 25ft row with 5ft spacing between rows. An untreated guard row separated each plot. Treatments were replicated 4 times in a randomized, complete block design. Sprays were applied with a backpack sprayer using 3 hollow cone nozzles/row and delivering 45 gal water/acre at 40 psi. Applications were madeweekly from 12 Sep until 18 Oct with a total of 6 applications. Bravo 720 at 1.5pt/acre was added to the treatments and the check on 26 Sep and 2 and 9 Oct to control disease. Evaluation criteria consisted of counts of the number of worm damaged fruit per 25 random fruit/plot, and counts of PA numbers on 5 random compound leaves/plot. Sample dates are indicated in the table. Green fruit was picked on 9 Oct and mature green and ripe fruit was picked on 24 Oct.

scholarly journals Comparison of Cyromazine (Trigard) and Bacillus Thuringiensis (Novodor) Foliar Sprays for CPB Control on Potatoes, Painter, VA

1995 ◽  
Vol 20 (1) ◽  
pp. 128-128
Author(s):  
John Speese
Keyword(s):  
First Generation ◽  
Agricultural Research ◽  
Block Design ◽  
Evaluation Criteria ◽  
Row Spacing ◽  
Life Stages ◽  
Hollow Cone ◽  
Egg Hatch ◽  
Randomized Complete Block Design ◽  
Extension Center

Abstract Potatoes were planted on 8 April at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of six 30 ft long rows on 3 ft row spacing, replicated 4 times in a randomized, complete block design. Sprays were applied using either a tractor-mounted sprayer or a 3-hollow cone nozzle boom backpack sprayer if the ground was too wet for the tractor. Sprays were applied in 40 gal/acre water. Spray dates are indicated in the tables. The entire test was sprayed out on 20 Jun with Vydate L at 0.5 lb (AI)/acre and Furadan 4F at 1.0 lb (AI)/acre to control first generation CPB adults. Evaluation criteria consisted of weekly counts of all CPB life stages present on 10 randomly chosen plants/plot, and the first sprays were applied at peak CPB egg hatch. Percent defoliation for each plot was rated on 20 Jun, and the center two rows of each plot were harvested and graded on 1 Jul to determine yields.

Foliar Sprays to Control Insects in Wheat, Painter, Va, 1993

1995 ◽  
Vol 20 (1) ◽  
pp. 265-265
Author(s):  
John Speese III
Keyword(s):  
Agricultural Research ◽  
Flag Leaf ◽  
Block Design ◽  
Eastern Shore ◽  
Treatment Threshold ◽  
Flag Leaves ◽  
Foliar Sprays ◽  
Randomized Complete Block Design ◽  
Extension Center

Abstract Wheat was planted on 13 Nov 1993 at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot was 25 ft long by 5 ft wide and replicated 4 times in a randomized, complete block design. Sprays were applied on 2 May using a 3-nozzle flat fan boom backpack sprayer delivering 20 gal water/acre at 40 psi, when CLB pressure was at or near the treatment threshold of 1 larva/flag leaf in most plots. Numbers of CLB larvae/50 flag leaves and numbers of EGA/50 ears were counted in each plot on the dates indicated in the table. Percent defoliation was rated on 12 May on 25 randomly chosen flag leaves/plot, and the plots were harvested on 7 Jul.

scholarly journals Comparison of Various Spray Schedules to Control Worms in Cotton, Painter, Va

1995 ◽  
Vol 20 (1) ◽  
pp. 217-217
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Block Design ◽  
Eastern Shore ◽  
Randomized Complete Block Design ◽  
Compressed Gas ◽  
Extension Center ◽  
Spray Applications

Abstract Cotton was planted on 11 May at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of two 25 ft long rows planted on 3 ft spacing, and replicated four times in a randomized, complete block design. Each plot was bordered by an untreated guard row. Sprays were applied using a compressed gas backpack sprayer delivering 10 gal water/acre at 60 psi and equipped with a single nozzle (TX4) boom. Bollworm egg thresholds of 2 eggs/100 bolls and 5 eggs/50 terminals were exceeded on 5 Aug and the first spray applications were made on this date. The 5-day sprays were applied on 10 Aug, and the 10-day sprays on 15 Aug. Plots were then scouted weekly to determine if subsequent sprays were needed by examining 25 bolls per plot for live worms. Although egg threshold was no longer used after 5 Aug in making spray decisions, it was noted that egg threshold was exceeded in the as needed treatments on 9 Aug.

scholarly journals At Planting and Foliar Insecticides to Control Insects on Snap Beans, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 66-66
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Block Design ◽  
Evaluation Criteria ◽  
Foliar Spray ◽  
Row Spacing ◽  
Hollow Cone ◽  
Foliar Sprays ◽  
Snap Beans ◽  
Randomized Complete Block Design ◽  
Extension Center

Abstract Snap beans were planted on 11 May at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of two 25 ft rows planted on 3 ft row spacing and replicated four times in a randomized, complete block design. An untreated guard row separated each plot. Payload 15G treatments were applied pre planting in furrow using a hand-held shaker. Foliar sprays were applied with a 3 hollow cone nozzle boom backpack sprayer delivering 60 gal water/acre at 40 psi. Evaluation criteria consisted of counts of nymph and adult thrips on 10 trifoliate leaves/plot on the dates indicated in the table. The leaves were washed in soapy water, filtered through a Buchner funnel, and the thrips counted under a binocular dissecting microscope. A visual count of the number of PLH nymphs on 10 trifoliate leaves/plot was taken on 6 Jul. The first foliar sprays were applied on 8 Jun at prebloom and subsequent sprays were applied based on increasing thrips counts on the dates indicated in the table. When the Payload treatments required a foliar spray, they were treated with Orthene 75S at 0.50 lb (AI)/acre.

scholarly journals Comparison of Pymetrozine (Cga 215944) and Imidacloprid (Provado) Foliar Sprays to Control Aphids in Tomatoes, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 185-185
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Test Field ◽  
Single Application ◽  
Eastern Shore ◽  
Hollow Cone ◽  
Potato Aphid ◽  
Single Row ◽  
Foliar Sprays ◽  
Extension Center ◽  
Aphid Populations

Abstract Tomatoes were transplanted on 9 Aug at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of a single row 20 ft X 5 ft, bordered on each side by an untreated guard row. On 1 Oct, heavy potato aphid populations developed in the test field. A pre-count of live aphids on 5 randomly picked compound leaves/plot was taken on this date and followed by a single application of all treatments. Treatments were applied with a backpack sprayer equipped with a 3 hollow cone nozzle boom and delivering 46 gal water/acre at 40 psi. To evaluate efficacy, the plots were sampled as previously described for the pre-count on the dates indicated in the table.

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 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.

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