scholarly journals Control of Lepidopterous Larvae on Spring Cabbage, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 95-95
Author(s):  
M. R. Peters ◽  
J. V. Edelson
Keyword(s):  
Agricultural Research ◽  
Evaluation Criteria ◽  
Row Spacing ◽  
Larval Feeding ◽  
Feeding Damage ◽  
Hollow Cone ◽  
Extension Center ◽  
Direct Counts

Abstract Cabbage plants were transplanted on 6 Apr at the Wes Watkins Agricultural Research and Extension Center, Lane, OK. Each plot consisted of two 15 ft-long rows bordered on each side by an unplanted row. Cabbage was transplanted with 18-inch plant and 36-inch row spacing. Treatments were replicated 4 times in a RCB design. Sprays were applied with a back-pack sprayer using 2 TXVS-26 hollow cone nozzles/row and delivering 36 gal/acre at 40 psi. Applications were made on 10, 16, and 23 May and on 2 and 9 Jun. Evaluation criteria consisted of direct counts of all lepidopterous larvae on 5 randomly selected plants until 22 May and then 3 randomly chosen plants/treatment for the rest of the experiment. On 13 Jun damage ratings were determined. A head was considered marketable if no visible evidence of larval feeding damage was observed on the head or wrapper leaves.

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 Control of Lepidopterous Pests on Cabbage, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 100-101
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Evaluation Criteria ◽  
Ovicidal Activity ◽  
Feeding Damage ◽  
Eastern Shore ◽  
Hollow Cone ◽  
Extension Center

Abstract Cabbage was transplanted on 10 Aug at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of a single 25ft row with 3ft spacing between rows. Plots were separated from each other by untreated guard rows. Each treatment was replicated 4 times in a RCB design. Treatments were applied with a backpack sprayer using 3 hollow cone nozzles/row and delivering 60 gal water/acre .at 40 psi. Application dates were 30 Aug; 12, 19, and 26 Sep; 9 and 18 Oct. An additional V71639 application was made on 5 Sep, as early applications of this material are necessary for maximum ovicidal activity. Latron B-1956 was added to each treatment at 8oz/100 gal water. Evaluation criteria consisted of counts of all worm species present on 5 random plants/plot. Dates with high populations for each species are recorded in the table. On 26 Oct, 5 plants/plot were rated for feeding damage according to Greene et al. in J. Econ. Entomol. 62(4): 798-800. A rating greater than 3 is considered unmarketable.

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.

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 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 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 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.

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 At Planting and Foliar Insecticides to Control Cucumber Beetles in Fall Cucumbers, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 92-92
Author(s):  
John Speese
Keyword(s):  
Agricultural Research ◽  
Block Design ◽  
Evaluation Criteria ◽  
Foliar Spray ◽  
Row Spacing ◽  
Randomized Complete Block Design ◽  
Cucumber Beetles ◽  
Cucumber Beetle ◽  
Marketable Fruit ◽  
Extension Center

Abstract Cucumbers were planted on 12 Aug at the Eastern Shore Agricultural Research and Extension Center, Painter, VA. Each plot consisted of a 25 ft long row planted on 5 ft row spacing, replicated four times in a randomized, complete block design. An untreated guard row separated each plot. Furadan 4F was applied in furrow at planting using a single nozzle boom backpack sprayer. The Payload 15G in furrow at planting treatments were applied using a hand-held shaker. Foliar sprays were applied using a 3 hollow cone nozzle boom backpack sprayer delivering 45 gal water/acre at 40 psi. Foliar spray dates were 31 Aug and 6 and 13 Sep. On 31 Aug, the Furadan 4F at planting plots were less defoliated than the other plots and dead and dying cucumber beetles were observed. These plots were, therefore, not sprayed on this date. Dead and dying beetles were also observed in the Payload 15G plots on 31 Aug. These plots were treated with a low rate of Asana on this date, since actively feeding beetles were also observed. Evaluation criteria consisted of counts of both species of cucumber beetle on a randomly chosen 6 ft (30 sq ft) section of row in each plot and estimation of percent defoliation in each plot on the dates indicated in the table. The marketable fruit in each plot was harvested on 4, 11, and 20 Oct and the total yields for the season are indicated in the table.

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