Access the full text.
Sign up today, get DeepDyve free for 14 days.
References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.
(D2) LEMON: Citrus limon (L.) Burm. f, 'Eureka' EFFECTS OF INSECTICIDES ON EMERGENCE OF GLASSY-WINGED SHARPSHOOTER NYMPHS IN NURSERY CITRUS, 2003 Elizabeth E. Grafton-Cardwell Department of Entomology, University of California, Riverside, CA 92521 Phone: (559) 646-6591 Fax: (559) 646-6593 E-mail: bethgc@uckac.edu Christopher A. Reagan Glassy-winged sharpshooter (GWSS): Homalodisca Coagulata (Say) Six insecticides and an untreated control were tested to determine the their effects on emergence of GWSS nymphs from egg masses. Adult GWSS were collected from an untreated citrus orchard in Bakersfield California and caged on 2-year-old, potted, 'Eureka' lemon trees in a greenhouse at Willits and Newcomb Nursery in Arvin, California during Jul 2003. Five cages were attached to each tree and five adult female GWSS were placed in each cage. The adult GWSS were allowed to deposit eggs for 7 days and then the adults were removed from the cages. Leaves were inspected, egg masses were circled, and the egg masses were divided among treatments. Insecticides were mixed as field rates in 750 gpa (Provado, Sevin, Assail, Esteem and F-1785) or 100 gpa for Mesurol. Leaves infested with egg masses were hand sprayed with various rates of formulated insecticides or sprayed with water, and branches were caged with polyester mesh cloth bags. One week after treatment, cages were opened, emerged nymphs counted, and egg masses were examined under a stereo-microscope to determine the percentage of non-emerged nymphs. The experiment was replicated on two dates for Sevin, Prasad, Assail, and Mesurol, but only once for Esteem and F17B5 because of the lack of efficacy of these insecticides. Mean percent of non-emerged GWSS nymphs per tree was analyzed using ANOVA and LSD (P £ 0.05) after arcsine transformation of the data. Sevin, Provado, and Assail provided the highest level of control of emerging GWSS nymphs (96.6-100% non-emerged). These treatments would be most useful for reducing the risk of GWSS nymphs emerging from egg masses on citrus nursery stock.
Arthropod Management Tests – Oxford University Press
Published: Jan 1, 2004
You can share this free article with as many people as you like with the url below! We hope you enjoy this feature!
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.