Title: Environmental, cultural and insecticidal effects on the vegetable leafminer, Liriomyza sativae Blanchard, and its parasites
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00098439/00001
 Material Information
Title: Environmental, cultural and insecticidal effects on the vegetable leafminer, Liriomyza sativae Blanchard, and its parasites
Alternate Title: Liriomyza sativae Blanchard
Physical Description: x, 94 leaves : graphs ; 28 cm.
Language: English
Creator: Tryon, Earl Haven, 1946- ( Dissertant )
Poe, S. L. ( Thesis advisor )
Cromroy, H. L. ( Thesis advisor )
Habeck, D. H. ( Reviewer )
Musgrave, C. A. ( Reviewer )
Reinert, J. A. ( Reviewer )
Zettler, F. W. ( Reviewer )
Publisher: University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: 1979
Copyright Date: 1979
Subjects / Keywords: Entomology and Nematology thesis Ph. D
Leafminers -- Control   ( lcsh )
Tomatoes -- Diseases and pests -- Florida   ( lcsh )
Celery -- Diseases and pests -- Florida   ( lcsh )
Dissertations, Academic -- Entomology and Nematology -- UF
Genre: bibliography   ( marcgt )
non-fiction   ( marcgt )
Abstract: The vegetable leafminer, Liriomyza sativae Blanchard (Diptera: Agromyzidae) , has been a serious pest of Florida's tomato and celery industry since 19 72. Leafminer populations were studied on commercial vegetable farms in two areas of Florida. Initial research focused on celery and tomato transplant seedlings grown in plant production ranges in Sun City, Florida, during the fall and winter of 1977 and 1978 (October to March) . In the spring and summer of 1978 (March to July) the research was conducted on commercial celery farms in Belle Glade, Florida, and complementary laboratory experiments were conducted in Gainesville, Florida. Adult leafminer invasion of the transplant production farm, monitored with yellow cardboard traps covered by sticky, transparent plastic, was the result of prevailing winds over nearby tomato fields. Ratio of larval mines to stipples was related to adult leafminer preference for host seedlings. Leafminer host preference was influenced by prior host developmental association, by host cultivar and species and seedling age. The number of adult leafminers and parasites reared from celery leaf samples was influenced by temperature, humidity and the number of leaves per container. The effect of temperature (15.6°, 18.2°, 21.1°, 22.2°, 23.9°, 26.7°, 29.4° and 32.2°C) on pupal development was linear. A degree-day value for pupal development, calculated from 6 constant temperatures, was 127.8 (degree-day C) for the leafminer and 141.2 (degree-day C) for the leafminer parasite, Opius spp. Experimental field plots and seedlings in flats had extremely high levels of parasitism (>90%). The major parasites were Chrysonotomyia formosa (Westwood) , Diglyphus intermedins (Girault) and Opius spp. No interactions or interdependence among parasite species could be demonstrated. Permethrin (0.20 lb. A. I. /A.), methamidophos (1.00 lb. A. I. /A.), fenvalerate (0.40 lb. A. I. /A.) and permethrin (0.10 lb. A. I. /A.) + oxamyl (0.25 lb. A. I. /A.) were the most effective insecticides significantly (P=0.05) reducing the number of mines on celery and tomato and celery seedlings. Methamidophos was the only insecticide effective in significantly (P=0.05) reducing the number of adult parasites reared from both celery and tomato leaf samples.
Statement of Responsibility: by Earl Haven Tryon, Jr.
Thesis: Thesis--University of Florida.
Bibliography: Bibliography : leaves 86-93.
Additional Physical Form: Also available on World Wide Web
General Note: Typescript.
General Note: Vita.
 Record Information
Bibliographic ID: UF00098439
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: alephbibnum - 000014083
oclc - 06142024
notis - AAB7274


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