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How to Manage Pests

UC Pest Management Guidelines

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Avocado

Manipulating Cultural Practices and Growing Conditions

(Reviewed 1/07, updated 1/07)

In this Guideline:

Cultural practices and growing conditions can be manipulated (X) in an IPM program to help prevent and control avocado pests and disorders and improve fruit yield.

Pest or Problem Cultural Practices and Growing Conditions Legend
AC BV DC FZ IA IW HM ML PR RP RC SN SC SS SP WP
Diseases
  • AC = Ant control
  • BV = Border vegetation management
  • DC = Dust control
  • FZ = Fertilization
  • IA = Irrigation amount and frequency
  • IW = Irrigation water quality
  • HM = Harvest methods and timing
  • ML = Mulching
  • PR = Pruning
  • RP = Rootstock certified pathogen-free
  • RC = Rootstock cultivar
  • SN = Sanitation
  • SC = Scion cultivar
  • SS = Site selection
  • SP = Soil preparation
  • WP = Water placement, irrigation method
Armillaria root rot
 
 
 
 
X
 
 
 
 
 
 
X
 
X
X
X
avocado black streak
 
 
 
 
X
X
 
 
 
 
 
 
X
 
 
 
bacterial canker
 
 
 
 
X 
 X
 
 
 
 
 
 
X
 
 
 
Dothiorella canker
 
 
 
 
X
X
X
 
X
X
X
X
 
 
 
X
fruit rots
 
 
 
 
X
X
X
X
X
 
 
X
 X
 
 
X
Phytophthora canker, crown rot
 
 
 
 
X
 
 
 
X
 
X
X
 
 
X
X
Phytophthora root rot
 
 
 
 
X
X
 
X
 
X
X
X
 
 X
X
X
sunblotch
 
 
 
 
 
 
 
 
X
X
 
 
X 
 
 
 
Verticillium wilt
 
 
 
 
 
 
 
 
 
 
 
X
 
X
 
 
Disorders
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
aeration, root asphyxiation
 
 
 
 
X
 
 
 
 
 
 
 
 
X
X
X
frost tolerance
 
 
 
X
X
 
 
 
X
 
X
 
X
X
 
 
nutrient disorders
 
 
 
X
X
X
 
X
 
 
 
 
 
X
X
X
poor drainage
 
 
 
 
X
X
 
 
 
 
X
 
 
X
X
 
salinity
 
 
 
X
X
X
 
X
 
 
X
 
X
X
X
 
sunburn
 
 
 
X
X
 
X
X
X
 
 
 
 
 X
X
 
Invertebrates
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
avocado brown mite
 
 
X
X
 X
 
 
 
 
 
 
 
X
 
 
 
avocado thrips
 
 
X
X
 
 
 
?
 
 
 
 
 
 
 
 
caterpillars
 
X
 
 
 
 
X
 
X
 
 
 
 
X
 
 
glassy-winged sharpshooter
 
X
 
 
 
 
 
 
 
 
 
 
 
X
 
 
greenhouse thrips
 
 
 
 
 
 
X
 
X
 
 
 
 
 
 
 
Homoptera
X
 
X
X
 
 
 
 
X
 
 
 
 
 
 
 
persea mite
 
X
 
X
X
 
 
 
 
 
 
 
X
X
 
 
pests of young trees only
X
X
 
 
 
 
 
 
 
 
 
 
 
X
 
 
sixspotted mite
 
 
X
X
 
 
 
 
 
 
 
 
X
 
 
 
Other
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
vertebrates
 
X
 
 
 
 
 
X
 
 
 
X
 
X
 
 
water contamination, soil loss
 
X
 
X
X
 
 
X
 
 
 
 
 
X
X
X
weeds
 
X
 
 
X
 
 
X
 
 
 
X
 
X
X
X

? = The effectiveness of mulching for thrips control is uncertain.
X = Cultural practices and growing conditions that can be manipulated to control pests.

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Avocado
UC ANR Publication 3436
General Information
Acknowledgment for contributions to General Horticultural Information:
M. L. Arpaia, Botany and Plant Sciences, UC Riverside
M. L. Bianchi, UC Cooperative Extension, San Luis Obispo County
C. J. Lovatt, Botany and Plant Sciences, UC Riverside
P. Mauk, UC Cooperative Extension, Riverside County
G. W. Witney, California Avocado Commission, Irvine, CA

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Statewide IPM Program, Agriculture and Natural Resources, University of California
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