Citrus (Florida)
Coordinated by Philip Stansly (pstansly@ufl.edu), Professor of Entomology,  
University of  Florida/IFAS/SWFREC

Background

Florida’s approximately 8,000 citrus growers occupy approximately 500,000 acres for an industry that provides approximately $9 billion of economic activity in Florida. The biggest current challenge threatening the citrus industry in Florida is the Asian citrus psyllid (ACP) vector of huanglongbing (HLB), also called citrus greening disease. HLB can greatly reduce citrus yields, is incurable, and was estimated to cost the Florida citrus industry $4.5 billion from 2007 through 2011. Citrus leafminer (CLM) is another economically important pest of citrus in Florida. Economic impact of CLM is due to 1) direct yield losses due to defoliation 2) association with citrus canker 3) cost of protecting nursery and non-bearing trees, and 4) greater production costs.

 
Citrus Florida
Florida Division of Plant Industry, Florida Department of Agriculture
and Consumer Services. Bugwood.org






UF_IFAS icon

Situation

Insecticide use in Florida citrus was minimal prior to detection of HLB. Now however, control of D. citri with synthetic, broad-spectrum insecticides has become prevalent and many growers spray monthly. Some of these insecticides have sub-optimal efficacy for CLM. As a result, we are experiencing a general increase in damage caused by CLM and citrus canker disease.

Objective


The proper choice of control methods can greatly impact effectiveness and help to save money and maintain or achieve consistency with integrated pest management (IPM) principles. To aid with the decision making process, a collaboration of IFAS, ZedX, Inc. and iPiPE has yielded a smartphone application capable of providing growers, consultants and all members of the citrus community with insecticide application recommendations based on site-specific pest pressures. This application will be tested by growers in the CPP and will be made broadly available through the iPiPE. 

Important Pests

  • Asian citrus psyllid, Diaphorina citri
  • Citrus leafminer, Phyllocnistis citrella
  • Citrus rust mite, Phyllocoptruta oleivora and the pink citrus rust mite, Aculops pelekassi
Diaphorina citri
Asian citrus psyllid (
Diaphorina citri). David Hall, 
Agricultural Research Service, Bugwood.com