Tree Fruit Research & Extension

New Insecticides for Apple and Pear IPM

Miticides

Acramite (bifenazate)- Acramite is a hydrazine compound from a relatively new class of chemistries, carboxylic acid ester. Its mode of action is a GABA (gamma-aminobutryric acid) agonist in insects, but has not been confirmed in mites. Acramite was recently registered for use on tree fruits, including apple, pear, peach, nectarine, plums, prunes. Acramite is primarily used against motile stages, but may have some ovicidal activity. (more...)

Zeal (also known as Secure) (extoxazole) – Zeal comes from a new class of chemistry, diphenyloxazoline, with a unique mode of action. Zeal acts primarily as an ovicide, but has molt inhibiting activity against immature mites as well. Zeal works on contact and has translaminar movement. (more...)

Envidor (spirodiclofen)- Envidor is from a new class of chemistry, tetronic acid, which disrupts the endocrine system, affecting energy production. Envidor is an IGR-type insecticide, so expect slow activity (vs. quick knock down). Envidor is not acutely toxic to adults. Envidor may affect some insect pests as well as mites, but has not been well studied in tree fruits. There is evidence on other crops that oil may be antagonistic to Envidor, thus current recommendations caution against the use of oil as an adjuvant. (more...)

Mesa (milbemectin) - Mesa is similar to abamectin (Agri-Mek), with a similar spectrum of activity (mites, leafminer). Residual activity appears shorter than Agri-Mek's and cross-resistance must be a consideration. The motile forms of mites are the primary target. (more...)

Nexter (formerly known as Pyramite) (pyridaben)- Nexter belongs to the pyridazinone class of miticides. Nexter's mode of action is as a mitochondrial electron transport inhibitor (METI), blocking cellular respiration (similar to Fujimite and Kanemite). Practical resistance management would suggest that the use of METI miticides (either Nexter, Fujimite or Kanemite) be limited to one application/year. (more...)

Fujimite (fenpyroximate)- Fujimite belongs to the phenoxypyrazole class of insecticides. Its mode of action is as a mitochondrial electron transport inhibitor (METI), blocking cellular respiration (similar to Nexter and Kanemite). Practical resistance management would suggest that the use of METI miticides (either Nexter, Fujimite or Kanemite) be limited to one application/year. (more...)

Kanemite (acequinocyl)- Kanemite belongs to the quinoline class of insecticides. Its mode of action is as a mitochondrial electron transport inhibitor (METI), blocking cellular respiration (similar to Nexter and Fujimite). Practical resistance management would suggest that the use of METI miticides (either Nexter, Fujimite or Kanemite) be limited to one application/year. (more...)

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