14900045

Integrated Pest Management
(IPM)
For Greenhouse Operations in
Maryland’s Secondary Schools
The information given herein is supplied with the understanding that no discrimination is intended and no endorsement is implied by the University of
Maryland and Maryland Department of Agriculture. It is the policy of the University of Maryland, College of Agriculture and Natural Resources,
Maryland Agricultural Experiment Station, and Maryland Extension that all persons have equal opportunity and access to programs and facilities without
regard to race, color, gender, religion, national origin, sexual orientation, age, marital or parental status, or disability.

ii
Disclaimer
This publication is a joint effort of University of Maryland specialists from various disciplines
and the Maryland Department of Agriculture, Pesticide Regulation Section. The US
Environmental Protection Agency, Region III, provided funding for this project.
Although this manual contains research-based information, the publisher and contributors offer
no warranties, express or implied, with respect to the use of this manual. Manual users maintain
complete responsibility for the accurate use and appropriate application of the information in this
manual for their intended purpose(s).
In no event shall the publisher or contributors be held responsible or liable for any indirect,
direct, incidental, or consequential damages, loss of profit, or any other commercial damage
whatsoever resulting from or related to the use or misuse of this manual.
Mention of trade names and products is for information only and does not constitute an
endorsement or recommendation of, or discrimination against, similar products not mentioned.
Printed in 2011 by University of Maryland Extension. All rights reserved. No part of this
publication may be reproduced or transmitted in any form, by any means (electronic,
photocopying, recording, manual, or otherwise) without the prior written permission of:
University of Maryland Extension
Central Maryland Research and Education Center
11975 Homewood Road
Ellicott City, MD 21042
[phone]
www.ipmnet.umd.edu
Original edition printed in 2003.
The information given herein is supplied with the understanding that no discrimination is
intended and no endorsement by Maryland Cooperative Extension is implied.
Equal Opportunity Programs

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Authors and Contributors
Stanton A. Gill, Extension Specialist of Entomology, Nursery and Greenhouse IPM Management
Central Maryland Research and Education Center
University of Maryland Extension
Sarah Kenney, Assistant Technician
Central Maryland Research and Education Center
University of Maryland Extension
Suzanne Klick, Agricultural Technician,
CMREC, University of Maryland Extension
Rondalyn Reeser, Agricultural Technician,
CMREC, University of Maryland Extension
Charles Schuster, Montgomery County Extension Educator,
Commercial Horticulture, Montgomery County Extension
Joanne Lutz, Independent IPM Scout
Will Healy, Ball Horticultural Company
Acknowledgements:
Thanks to Murphy John’s, Inc., Sudlersville, MD, and Bell Nursery,Burtonsville, MD, for
providing personal tours and valuable insight into commercial production in Maryland.
Special thanks to Teresa Adkins (Carroll County Public Schools), Michael Harrington (Frederick
County Public Schools), and Carroll Shry (Frederick County Public Schools), each of whom
provided guidance and direction for this project.
Special thanks to Suzanne Klick, Agricultural Technician, Central Maryland Research and
Education Center, for photograph contributions and assistance in bringing this publication to
print, as well as to Ed Crow, Maryland Department of Agriculture, for lead guidance with this
manual.

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Primary In-State Reviewer
Ed Crow, Maryland Department of Agriculture
Pesticide Regulation Section
50 Harry S. Truman Pkwy.
Annapolis, MD 21401
Phone: [phone]
In-State Reviewers
Susan Lowery, Teacher, Washington County Public Schools
Andrew Ristvey, Regional Specialist, Wye Research and Education Center
Teresa Shank, Teacher, Washington County Public Schools
Sherri Smith, Teacher, Caroline County Public Schools
Copies of this manual are available by contacting:
Ed Crow, Maryland Department of Agriculture
Office of Plant Industries & Pest Management
Pesticide Regulation Section
50 Harry S. Truman Pkwy.
Annapolis, MD 21401
Phone: [phone]
[email protected]
Stanton A. Gill, University of Maryland Extension
Central Maryland Research and Education Center
11975 Homewood Road
Ellicott City, MD 21042
[phone]
[email protected]

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Table of Contents
Introduction
1
Unit 1
Principles of IPM
Chapter 1
What is Integrated Pest Management and Why Does It Matter?
3
Chapter 2
Steps to Integrated Pest Management
9
Unit 2
Understanding the Greenhouse Ecosystem
Chapter 3
Basic Plant Requirements
17
Chapter 4
Pests in the Greenhouse Ecosystem
37
Chapter 5
Practical Biological Controls: Host Species and Predators
50
Unit 3
Interdisciplinary IPM
Chapter 6
Greenhouse Management Policies
56
Chapter 7
Careers, Training, and Licensing
88
Unit 4
Pest Control Options
Chapter 8
Greenhouse Maintenance, Structure, and Sanitation
93
Chapter 9
Early Detection
105
Chapter 10
Understanding Your Pests
135
Appendix
Learning Goal Indices
151
IPM Career Resources
161
Diagnosing Plant Problems
163
Biocontrol Ideas
167
Greenhouse Biological Control Suppliers
168
Multimedia Resources
169
Resources for Greenhouse Production
173
University of Maryland Extension Contacts
179
Supplemental PowerPoint Presentations