Avocado December 2017 PEST MANAGEMENT GUIDELINES FOR AGRICULTURE Contents (Dates in parenthesis indicate when each topic was updated) Avocado Year-round IPM Program (Revision 2016) ............................................................................................................................... v General Information (Section reviewed 09/16) ..........................................................................................................................................1 Manipulating Cultural Practices and Growing Conditions (09/16) .....................................................................................................1 Timings for Key Cultural and .....................................................................................................................................................................2 Monitoring Practices (09/16) ......................................................................................................................................................................2 When to Monitor Pests, Damage, and .......................................................................................................................................................3 Natural Enemies (09/16) .............................................................................................................................................................................3 Monitoring Caterpillars and their Natural Enemies (09/16) .................................................................................................................4 Monitoring Persea and Sixspotted Mites (09/16) ....................................................................................................................................6 Monitoring Diseases and Disease-Promoting Conditions (09/16) ......................................................................................................8 Rootstock Tolerance to Disorders and Pathogens (09/16) ...................................................................................................................10 Relative Toxicities of Insecticides, Miticides, and Molluscicides Used in Avocados to Natural Enemies and Honey Bees (09/16) ..........................................................................................................................................................................................................11 Invertebrates: Pests of Primary Concern (Section reviewed 09/16) .......................................................................................................13 Amorbia (Western Avocado Leafroller) (10/16) ...................................................................................................................................13 Avocado Brown Mite (09/16) ...................................................................................................................................................................18 Avocado Thrips (09/16) ............................................................................................................................................................................20 Greenhouse Thrips (09/16) .......................................................................................................................................................................25 Omnivorous Looper (09/16) .....................................................................................................................................................................29 Persea Mite (09/16) ....................................................................................................................................................................................33 Polyphagous Shot Hole Borer (12/17) ....................................................................................................................................................38 Kuroshio Shot Hole Borer (12/17) ...........................................................................................................................................................38 Sixspotted Mite (09/16) .............................................................................................................................................................................40 Invertebrates: Young-Tree Pests (Section reviewed 09/16) .....................................................................................................................42 Branch and Twig Borer (09/16) ................................................................................................................................................................42 Brown Garden Snail (09/16) .....................................................................................................................................................................43 European Earwig (09/16) ..........................................................................................................................................................................45 False Chinch Bug (09/16) ..........................................................................................................................................................................46 Fuller Rose Beetle (09/16) .........................................................................................................................................................................47 Grasshoppers (09/16) ................................................................................................................................................................................49 June Beetles (09/16) ....................................................................................................................................................................................51 Invertebrates: Uncommon or Rarely Managed Pests (Section reviewed 09/16) ..................................................................................53 Ants (09/16) ................................................................................................................................................................................................53 Armored Scales (09/16) .............................................................................................................................................................................56 Avocado Lace Bug (09/16) ........................................................................................................................................................................59 Glassy-Winged Sharpshooter (09/16) .....................................................................................................................................................61 Longtailed Mealybug (09/16) ...................................................................................................................................................................63 Neohydratothrips (09/16) .........................................................................................................................................................................65 Orange Tortrix (09/16) ..............................................................................................................................................................................66 Soft Scales (09/16) ......................................................................................................................................................................................69 Whiteflies (09/16) .......................................................................................................................................................................................70 Diseases (Section reviewed 09/16) ..............................................................................................................................................................72 Anthracnose (09/16) ..................................................................................................................................................................................72 Armillaria Root Rot (Oak Root Fungus) (09/16) ...................................................................................................................................74 Avocado Black Streak (09/16) ..................................................................................................................................................................76 Bacterial Canker (09/16) ............................................................................................................................................................................77 Branch Canker and Dieback ......................................................................................................................................................................78 (formerly Dothiorella Canker) (09/16) ...................................................................................................................................................78 Fruit and Stem-end Rots ............................................................................................................................................................................80 Fusarium Dieback (09/16) .........................................................................................................................................................................81