scholarly journals Insect Control on Fresh Market Tomatoes in West-Central Florida, SPRING 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 186-187 ◽  
Author(s):  
David J. Schuster
Keyword(s):  
Fine Sand ◽  
Insect Control ◽  
Fresh Market ◽  
Central Florida ◽  
Flower Thrips ◽  
West Central ◽  
Trained Observers ◽  
Tomato Pinworm ◽  
Polyethylene Mulch

Abstract Transplants were set 10 Mar, 18 inches apart on 8-inch-high beds of EauGallie fine sand covered with white polyethylene mulch. Each plot consisted of a single 15 ft row with rows on 5 ft centers. Treatments were replicated 4 times in a RCB design and were applied with a 2.5 gal, hand-held CO2-powered sprayer on 3, 10, 17, 24 Apr, 1, 8, 15, 22, 31 May, 6 and 12 June. The sprayer was operated at 60 psi and delivered 60 gpa for the first two applications, 90 gpa the next two applications, and 120 gpa for the remaining applications using a single nozzle fitted with a D-5 disk and #25 core. On 10 May and 19 June, the numbers of tomato pinworm leaf rolls were counted by two persons in a 2 min. whole plot search. On 10 May, the numbers of Liriomyza spp. leafmines were counted by two trained observers in a 1 minute whole plot search. Pinworm and leafminer damage counts of both persons were totalled. Fruit were harvested on 10 May, 1, and 15 June. The number and weight of undamaged fruit and the number and weight of fruit damaged by armyworm larvae and flower thrips (fruit with five or more oviposition dimples on the blossom end) were determined.

scholarly journals Insect Control on Fresh Market Tomatoes in West-Central Florida, Fall 1994

1996 ◽  
Vol 21 (1) ◽  
pp. 187-188
Author(s):  
David J. Schuster
Keyword(s):  
Fine Sand ◽  
Insect Control ◽  
Fresh Market ◽  
Central Florida ◽  
West Central ◽  
Whole Plant ◽  
Southern Armyworm ◽  
Polyethylene Mulch

Abstract Transplants were set 8 Aug, 18 inches apart on 8-inch-high beds of EauGallie fine sand covered with white polyethylene mulch. Each plot consisted of a single 15 ft row with rows on 5 ft centers. Treatments were replicated 4 times in a RCB design and were applied with a 2.5 gal, hand-held CO2-powered sprayer on 19, 27 Sept, 3, 10, 18, 26 Oct, 2, and 7 Nov. The sprayer was operated at 60 psi and delivered 60 gpa for the first application, 90 gpa the next two applications, and 120 gpa for the remaining applications using a single nozzle fitted with a D-5 disk and #45 core. Tributyrin was applied at 150 gm/gal on the first application, was not applied on the next two applications, and was applied at 15 gm/gal on the last five applications. On 31 Oct, the numbers of ‘Liriomyza’ spp. leafmines and the number of southern armyworm larvae were counted by two persons in whole plant searchs of 1 min and 30 sec, respectively, and counts of both persons were totalled. Fruit were harvested on 18, 31 Oct and 14 Nov. The number and weight of undamaged fruit and the number of fruit damaged by armyworm larvae were determined.

scholarly journals Insect Management on Bell Pepper in West-Central Florida, Fall 1994

1996 ◽  
Vol 21 (1) ◽  
pp. 133-133
Author(s):  
David J. Schuster
Keyword(s):  
Fine Sand ◽  
Beet Armyworm ◽  
Larval Feeding ◽  
Feeding Damage ◽  
Insect Management ◽  
Central Florida ◽  
Fruit Wall ◽  
Pepper Weevil ◽  
Marketable Fruit ◽  
Polyethylene Mulch

Abstract Transplants were set 8 Aug, 12 inches apart on 8-inch-high and 32-inch-wide beds of fumigated EauGallie fine sand covered with white polyethylene mulch. Each plot consisted of a single row of 12 plants with rows on 5 ft centers. Treatments were replicated 4 times in a RCB design and sprays were applied with a 2.5 gal, hand-held CO2-powered sprayer on 16, 21, 29 Sept, 7, 13, 20, 27 Oct, 3, 10, 16, 23, 29 Nov, 6 and 13 Dec. The sprayer was outfitted with a single nozzle with a D-5 disk and #45 core and delivered 100 gpa at 60 psi. Granular applications were made just prior to soil fumigation (about 2 weeks prior to planting) in two narrow bands 10 inches on either side of bed centers. On 5-6 Oct, each plant in each plot was inspected for small (≤0.5 inch long) and large (0.5 inch long) beet armyworm larvae. On 3 Nov, each plot was rated by two persons for increasing percentage of defoliation by beet armyworm larvae using the Horsfall-Barratt system. With this system, ratings of 1-12 corresponded to 1-100% defoliation. The ratings were averaged prior to analysis. Fruit were harvested on 2, 21 Nov, 14 and 19 Dec and the number and weight of undamaged fruit and the number of fruit damaged by beet armyworm larvae were determined. Fruit with slight feeding damage only on the stem or calyx were considered marketable. Fruit with either slight or severe damage on the fruit wall were considered unmarketable. Fruit also were examined for the presence of oviposition scars on the outside of the fruit and for the presence of larval feeding damage on the inside of the fruit caused by the pepper weevil. On 16 Dec, each plot was sampled by dislodging the insects from the tops of five plants with a 12 inch garden stake into the bottom of a rectangular cake pan painted black and coated with a thin film of vegetable oil. The numbers of pepper weevil adults, armyworm larvae, predator adults and immatures, and aphids were counted. The numbers of predators were totaled over all species since few of any one species were present.

Armyworm and Pepper Weevil Control on Bell Pepper in West-Central Florida, Spring 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 134-135
Author(s):  
David J. Schuster
Keyword(s):  
Fine Sand ◽  
Beet Armyworm ◽  
Larval Feeding ◽  
Feeding Damage ◽  
Severe Damage ◽  
Central Florida ◽  
Fruit Wall ◽  
Pepper Weevil ◽  
Marketable Fruit ◽  
Polyethylene Mulch

Abstract Transplants were set 14 Mar, 12 inches apart on 8-inch-high and 32-inch-wide beds of EauGallie fine sand covered with white polyethylene mulch. Each plot consisted of a single row of 10 plants with rows on 5 ft centers. Treatments were replicated 4 times in a RCB design and were applied with a 2.5 gal, hand-held CO2-powered sprayer on 7, 13, 20 Apr, 4, 11, 18, 25 May, 1, 9, 14, 21, 29 Jun and 6 July. The sprayer was outfitted with a single nozzle with a D-5 disk and #45 core and delivered 100 gpa at 60 psi. The Neemix 4.5% formulation was inadvertently substituted for the 0.25% formulation for the first three applications. On 16 May, each plot was rated 1 to 12 for increasing defoliation due to armyworm feeding using the Horsfall-Barratt scale. Fruit were harvested on 24 May, 12, 26 Jun and 10 July and the number and weight of undamaged fruit and the number of fruit damaged by beet armyworm larvae were determined. Fruit with slight feeding damage only on the stem or calyx were considered marketable. Fruit with either slight or severe damage on the fruit wall were considered unmarketable. Fruit also were examined for the presence of oviposition scars on the outsides of the fruit and for the presence of larval feeding damage on the insides of the fruit caused by the pepper weevil.

scholarly journals Insect Control on Bell Pepper in West-Central Florida, Spring 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 103-103
Author(s):  
David J. Schuster
Keyword(s):  
Bell Pepper ◽  
Insect Control ◽  
Central Florida ◽  
West Central
Sign in / Sign up

Export Citation Format

Share Document