Tomato-Spider mite

Tetranychus spp.

Pest description, crop damage and life history

See:

Management-biological control

Spider mite populations are held down in cool conditions early in the season by various predators such as pirate and big-eyed bugs. Predator mites are effective predators of spider mites and are available.

Management-cultural control

Avoid early season applications of insecticides, which will reduce populations of beneficial insects. Spider mite infestations are favored by dry, dusty conditions, so avoid creating these problems and stressing the plants. Mites can be hosed from plants with a strong stream of water. Excessive nitrogen fertilization may cause population buildup.

Management-chemical control: HOME USE

  • azadirachtin (neem oil)-Some formulations are OMRI-listed for organic use.
  • bifenthrin
  • insecticidal soap-Complete coverage, especially of undersides of leaves, is essential. Repeat applications may be required. Some formulations are OMRI-listed for organic use.
  • plant-derived essential oils (cottonseed, clove, garlic, etc.) have proven effective against mites. Some formulations are OMRI-listed for organic use.
  • sulfur

Management-chemical control: COMMERCIAL USE

  • abamectin (Agri-Mek) at 0.009 to 0.019 lb ai/a. PHI 7 days. REI 12 hr. Retreatment interval 7 days. Do not exceed two sequential applications or 0.056 lb ai/a per season.
  • acequinocyl (Kanemite 15SC) at 0.3 lb ai/a. PHI 1 day. REI 12 hr. Retreatment interval 21 days. Do not exceed 0.6 lb ai/a per season.
  • bifenazate (Acramite 50WS) at 0.375 to 0.5 lb ai/a. PHI 3 days. REI 12 hr. Limit 1 field treatment per year.
  • bifenazate (Floramite SC) at 0.063 to 0.125 lb/100 gal. PHI 3 days. REI 12 hr. Do not exceed 1 lb ai/a per season. Limit 2 treatments. For greenhouse application only.
  • bifenthrin (Brigade WSB) at 0.033 to 0.08 lb ai/a. PHI 1 day. REI 12 hr. Retreatment interval 10 days. Limit 4 treatments.
  • bifenthrin + avermectin (Athena) at 0.092 to 0.116 lb ai/a. PHI 7 days. REI 12 hr. Retreatment interval 10 days. Do not exceed 0.056 lb ai/a avermectin nor 0.2 lb ai/a bifenthrin per season.
  • bifenthrin + zeta-cypermethrin (Hero) at 0.1 lb ai/a. PHI 1 day. REI 12 hr. Retreatment interval 10 days. Do not exceed 0.42 lb ai/a per season. Limit 4 treatments.
  • borate complex (Prev-Am Ultra) apply at 0.4% solution. Spray to complete coverage. REI 12 hr. OMRI-listed for organic use.
  • chlorfenapyr (Pylon) at 0.1 to 0.2 lb ai/a. PHI 0 days. REI 12 hr. Do not exceed 0.6 lb ai/a per season. Greenhouse only. Retreatment interval 5 days. Do not use on tomato varieties with a diameter of less than one inch when mature.
  • cyflumetofen (Nealta) at 0.179 lb ai/a. PHI 3 days. REI 12 hr. Retreatment interval 14 days. Do not exceed 0.357 lb ai/a, Knockdown only. Application should be timed to coincide with recommended miticide treatment.
  • dicofol (Dicofol 4E) at 0.38 to 0.75 lb ai/a. PHI 2 days. REI 25 days. One application per season.
  • etoxazole (TetraSan) at 0.025 to 0.625 lb ai/100 gal (covers about 20,000 sq ft). PHI 1 day. REI 12 hr. (indoor grown only). Do not exceed 2 applications per cropping season. Do not exceed 1.25 lb per acre per application.
  • fenpropathrin (Danitol) at 0.2 lb ai/a. PHI 3 days. REI 24 hr. Retreatment interval 7 days. Do not exceed 0.8 lb ai/a per season.
  • fenpyroximate (Fujimite) at 1.25 lb ai/a. PHI 1 day. REI 12 hr. Do not exceed 2.5 lb ai/a per season. Limit 2 applications.
  • hexythiazox (Onager) at 0.94 to 1.88 lb ai/a. PHI 1 day. REI 12 hr. One treatment. Greenhouse only.
  • insecticidal soap (M-Pede) at 2% solution. See label for gal/a rate. PHI 0 days. REI 12 hr. Some formulations are OMRI-listed for organic use.
  • malathion (Gowan Malathion 8) at 1.5 lb ai/a. PHI 1 day. REI 12 hr. Retreatment interval 5 days. Limit 4 treatments.
  • Metarhizium anisopliae (Met52 EC) at 40 to 80 fl oz/100 gal as drench or 8 to 64 fl oz/a foliar. PHI 0. REI 4 hr.
  • propyleneglycol monolaurate (Acaritouch) at 12 to 25 oz/100 gal of formulated product. PHI 1 day. REI 4 hr.
  • spiromesifen (Oberon 2SC) at 0.11 to 0.13 lb ai/a PHI 1 day. REI 12 hr. Retreatment interval 7 days. Limit 3 treatments per year. Do not exceed 0.4 lb ai/a per season.