Management of Insect and Mite Resistance in Ornamental Crops (ENY843/IN715)

farm, flowers, field, crops, greenhouses. UF/IFAS File Photo.Resistance of arthropods to crop management chemicals has been problematic since the early era of synthetic organic pesticides. During the 1970s and early 1980s leafminer outbreaks heavily damaged herbaceous ornamental crops such as chrysanthemum, gypsophila, aster, and marigold in fields, shade houses and greenhouses. Several effective insecticides including organophosphates, carbamates, pyrethroids, and a triazine were identified for leafminer control during the outbreak; however, control was short-lived as the leafminer developed resistance to each insecticide.This 11-page fact sheet was written by James F. Price, Elzie McCord, Jr., and Curtis Nagle, and published by the UF Department of Entomology and Nematology, November 2012.

Citrus Mealybug Planococcus citri (Risso) (Insecta: Hemiptera: Pseudococcidae) (EENY537/IN947)

Figure 3. Adult mealybug female. The citrus mealybug is a common pest of citrus primarily in greenhouses, and of several ornamental plants in Florida. It has been recognized as a difficult to control pest in Europe since 1813, where it is called the greenhouse mealybug and in the United States since 1879. This 4-page fact sheet was written by Harsimran Kaur Gill, Gaurav Goyal, and Jennifer Gillett-Kaufman, and published by the UF Department of Entomology and Nematology, September 2012.

EENY450/IN822 Black thread scale, Ischnaspis longirostris (Signoret) (Insecta: Hemiptera: Diaspididae)

EENY-450, a 4-page illustrated fact sheet by Adriana Espinosa, Amanda Hodges, Greg Hodges and Catharine Mannion, is part of the Featured Creatures collection. It describes this one of the most serious armored scale pests worldwide, attacking over 50 families of host plants — its distribution, field characteristics, life cycle, hosts, plant damage and economic importance, and managementIncludes references. Published by the UF Department of Entomology and Nematology, June 2009.

ENH1118/EP383 Selected Miticides for Use on Ornamental Plants

ENH1118, an 11-page fact sheet by Robert H. Stamps and Lance S. Osborne, provides an overview of the main mite pests of ornamental plants, detection and control. Includes references and tables listing miticides and manufacturers/distributors. Published by the UF Department of Environmental Horticulture, April 2009.

ENY-750/IN773 A Dresser Drawer Method of Managing Insect and Mite Resistance in Ornamentals

ENY-750, a 2-page fact sheet by James F. Price and Curtis A. Nagle, describes a dresser drawer method to develop pesticide rotation plans that can extend the useful lives of pesticides. Published by the UF Department of Entomology and Nematology, July 2008.