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IPMnet NEWS April 1994 Issue no. 5
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IPMnet, the Global IPM Information Service,
operates through a cooperative agreement between the
Consortium for International Crop Protection and
the (U.S.) National Biological Impact Assessment Program.
***********
* Pest Threatens Citrus, Bees *
------------------------
Writing in the FLORIDA EXTENSION BEEKEEPING NEWSLETTER, M.T.Sanford
warns that, "it will not be business as usual this year" in the extensive
State of Florida citrus groves due to the recent invasion of the citrus
leafminer (_Phyllocnistis citrella_), a pest native to eastern and southern
Asia.
The citrus leafminer (CLM) was detected in May 1993 and now, less than
a year later, has affected virtually all of Florida citrus. CLM larvae
`mine' tender foliage and stems, causing leaves to drop. Heavy infestations
of the tiny moth can retard growth of both nursery and newly planted trees,
or may reduce yield of bearing trees. CLM rates among the most feared pests
in citrus production.
Prof. Sanford refers to detailed information presented in a new
Florida Cooperative Extension Service publication, SP 156, THE CITRUS
LEAFMINER, _PHYLLOCNISTIS CITRELLA_, A NEW PEST OF CITRUS IN FLORIDA. Pest
history, the damage it causes, how to assess the need for control,
available control measures, and other concerns are described. (For
information about obtaining copies, contact: Publications, Univ. of
Florida, P.O. Box 110011, Gainesville, FL32611-0011, USA.)
The reason for devoting space to a citrus pest in a beekeeping
publication relates to how some measures to control CLM could impact bee
operations and revenues. "Growers," Sanford notes, "may be quick on the
pesticide application trigger," which could easily upset bee colonies.
Beekeepers must remain "alert, actively communicating with growers to avoid
possible problems."
For further information, contact: M.T. Sanford, Bldg. 970, Box 110620,
Univ. of Florida, Gainesville, FL 32611-0620, USA.
E-mail: mts@gnv.ifas.ufl.edu Fax: 01!904!392!0190.
--adapted from, FLORIDA EXTENSION BEEKEEPING NEWSLETTER,
12:3, March 1994. <>
* Pest Scouting: Some Facts *
-------------------------
A U.S. federal survey taken in 1992 obtained information from tomato,
lettuce, and strawberry producers in eight, two, and nine states,
respectively, that revealed the following data for pest scouting:
* Scouting for pests (insects, weeds, or disease) occurred on
60-66% of surveyed farms growing tomatoes or strawberries in
1992, and on 92% of those growing lettuce.
* The operator, or a family member, most often did the scout-
ing on tomato and strawberry farms; lettuce growers more
frequently used commercial services or chemical dealers.
* Farms doing pest scouting more frequently used some other
pest control practices and a different mix of pesticide
active ingredients than did those doing no scouting.
The collected data was reported in RTD UPDATES: PEST SCOUTING, which
also noted that, "Scouting for pests generally forms the basis of most
integrated pest management programs. Scouting can help farmers more
accurately identify pest populations and may improve, thereby, the timing
and selection of pesticide applications. In addition, scouting to determine
the impact of pest pressure on crop yield also helps farmers determine the
economic threshold for pesticide applications."
--excerpted from, RTD UPDATES: PEST SCOUTING, February
1994, no. 1. Available from: RTD UPDATES, Economic
Research Service, U.S. Department of Agriculture,
1301 New York Avenue, N.W., Room 524, Washington,
DC 20005-4788, USA. Phone: 01-202-219-0436. <>
_____________________________________________________________
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For the latest information on the all-important topic of
pest resistance to control measures, check out this highly
authoritative publication.
_____________________________________________________________
IPMnet NEWS includes a forum/opinion section, an extensive
calendar, short reviews of all sorts of publications, and a general
"catchall" section on IPM-related topics. The sponsors invite you to
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representatives from 29 countries plus the US) who are concerned with
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