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Integrated Pest Management
for the Urban Farmer
Jacqueline Kowalski
Types of Urban Agriculture
Community Gardens
(many people doing
their own thing)
Social Enterprises (not
for loss)
Market Gardens (for
profit)
Characteristics of Urban Gardeners
Persons of diverse
backgrounds
Often have not engaged
in agricultural
enterprises in the past
Often have alterative
philosophies of
agriculture production
Characteristics of Urban
GardenersUtilizing much smaller spaces. The sites may have
challenges
May be unaware of pest destruction potential
Many choose not to use conventional pest controls
May not be aware of efficacy issues of available products
Advantages Urban Farms have
with regard to Pest Management
• Less wind (can be a disadvantage too)
• Less predators (sometimes)
• More diversity in cropping systems
• Smaller areas to control
• Some strategies are more suitable
Disadvantages
Less area to rotate
crops
Limited control options
Cost effectiveness of
product purchase for
small farms
What is IPM
IPM is a sustainable
approach to managing
pests through biological,
cultural, physical and
chemical tools in a way
that minimizes risks to
the community.
www.ipminstitute.org
Where do you start?
Vegetable Production Fruit Production
Where do you start?
Recognize that insects, diseases and other pests
will find you regardless of your intentions
Know what the common diseases and insects will
problems for your crops
Learn where in the life cycle insects are most
vulnerable and where damage potential is high
Whole farm approach
• What is your farm’s big picture?
• What are you most profitable crops?
• What is your long-term rotation plan?
• What do you need to be ready?
Scout and Scout Again!!!!!
• Look under the leaves
• Around the soil line
• Net sweep
• Traps and sticky
cards
• Growing Degree Days
Photo Credit: Debbie Roos
Degree days
How many growing degree days
in your location?
Cultural Practices
(Preventive)
• Healthy soil structure
• Variety selection
• Appropriate spacing
• Weed management
• Mulches
• Rotation, rotation, rotation
Mechanical or Exclusion
Techniques • Row covers
• Trap crops
• Ring barriers
• Hand picking
Photo: University of Missouri
Biological Controls
• Maintain natural
predators through
providing habitat for them
to stay
• Release of biologicals
problematic and limited in
effectiveness
• Utilize pesticide products
to conserve the “good
bugs”
Top insects of note for urban
farms
Flea beetle
Cucumber beetle
Mexican bean beetle
Mites
Tomato &tobacco horn
worm
Many, many others
Cucumber Beetle
(Affects cucurbits, bean and corn)Spotted Striped
Less active during cool, rainy weather
Vector bacterial wilt
Plant rotation, eggs are near host plant
Plant late
Row covers, take off for pollinators
Beneficial nematodes, pyganics
Photo Credit: Debbie Roos
Photo Credit: Debbie Roos
Photo Credit: Lawrence Ralph Berg
Mexican Bean Beetle
Affects beans (all kinds)
Adults overwinter in plant debris,
Eggs are yellow
Adults and larvae feed on underside of
leaves
Handpick and destroy.
Remove debris
Spinosad, neem, pyrethrum
Imported Cabbage Worm
• Moths emerge in spring
• Lay hundred
• Many generations per
year
• Remove and kill eggs
• Bt.
• Cabbage loopers and
diamondback moths are
also problematic
Photo Credit: Sarfo
©Utah State University
Spider Mite
• Not technically an
insect
• Problem during hot,
dry weather
• Spread easily and
reproduce rapidly
• Can be sprayed off
• Keep plants well
watered
Tomato hornworm
• Seem to appear out
of nowhere
• Heavy feeder
• Leave large feces
• Pick them offPhoto credit: George Bredenhoft
Photo credit: Shawn Harahan
Game changersBrown Mamorated Stink
Bugs Spotted wing drosophila
Other friends
©Canal Photos
Weed control
You have to control your weeds to
be successful
Mechanical
Cultivating
Mulch
Hand pulling
Chemical
Careful of timing
Mulch
Photo: Colorado State University
Mulch
Common mistakes
• Ignoring a problem or not treating in a
timely manner
• Pesticides are the line of first defense
• If it works on one thing, it must work on all
• More is better
Be in the know
• Sign up for the OSU VegNet newsletter and other pest
alerts
• Get to know your county ANR Extension Educator
• Attend Field Nights and OSU Workshops
• Take the private pesticide applicators training
• Keep up to date with products and changes in pesticide
labels
Questions?
Jacqueline Kowalski
Ohio State University
Extension Educator
Cuyahoga County
kowalski.124@osu.edu
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