Insect Control on Apples with Omni Supreme Oil (Orchex 796E) Damaged Fruit at Mines/Leaf Harvest Treatment CM OBLR SJS WALH STLM Omni oila 21.0 1.0 1.0 0 0.9 Omni oilb 17.0 1.0 1.5 0 0.8 Guthion 4.5 0.5 6.0 2.5 3.8 Untreated 42.5 5.0 21.0 19.0 3.1 check a 6 sprays of 1% b 8 sprays H.Riedl,OSU/MCAREC,Hood River
Insect Control on Apples with Omni Supreme Oil (Orchex 796E) % Damaged Fruit at Harvest Mines/Leaf Treatment CM OBLR SJS WALH STLM Omni oil a 21.0 1.0 1.0 0 0.9 Omni oil b 17.0 1.0 1.5 0 0.8 Guthion 4.5 0.5 6.0 2.5 3.8 Untreated check 42.5 5.0 21.0 19.0 3.1 a 6 sprays of 1% b 8 sprays H. Riedl, OSU/MCAREC, Hood River
Codling Moth: Prerequisites for Mating Disruption Initial population low (1-2%) If moderate-high,supplemental control Border treatments unless isolated Block of minimum size,uniform shape Problems:wind,sloping terrain
Codling Moth: Prerequisites for Mating Disruption • Initial population low (1-2%) • If moderate-high, supplemental control • Border treatments unless isolated • Block of minimum size, uniform shape • Problems: wind, sloping terrain
CM Control:Neonicotinyl Insecticides Assail,Calypso,Clutch* Lab studies with Calypso ·Eggs:no topical activity,but eggs die when laid on residue ·Young larvae:good activity ·Moths:some activity
CM Control: Neonicotinyl Insecticides Assail, Calypso, Clutch* Lab studies with Calypso • Eggs: no topical activity, but eggs die when laid on residue • Young larvae: good activity • Moths: some activity
Codling Moth Control Alternatives IGRs Insect Growth Regulators: Chitin-synthesis inhibitors: Dimilin Rimon* Juvenile hormone mimics: Esteem Molt-accelerating compounds: Intrepid *labeled for apples;no pear label yet!
Codling Moth Control Alternatives IGRs – Insect Growth Regulators: • Chitin-synthesis inhibitors: Dimilin Rimon* • Juvenile hormone mimics: Esteem • Molt-accelerating compounds: Intrepid _ *labeled for apples; no pear label yet!
Chitin-synthesis inhibitors: Dimilin Susceptible Resistant 。Primarily ovicidal ·Selective ·Not very effective in recent field tests Cross-resistance to OPs
Chitin-synthesis inhibitors: Dimilin Resistant Susceptible • Primarily ovicidal • Selective • Not very effective in recent field tests • Cross-resistance to OPs