Our Insights | Crop Protection
July 01, 2016

Managing Two-Spotted Spider Mites on Soybeans

Spider Mite Information and Recommendations

Two-spotted Spider Mites have been detected in Central Illinois soybean fields. Extended periods of hot temperatures and minimal rainfall are ideal for outbreaks. These conditions increase the reproduction of spider mites and beneficial insects cannot control populations. Also, under these conditions, spider mite movement is increased from surrounding vegetation to healthy soybean plants.


Recommendations for Spider Mite Infestation in Illinois:

1. Spray the whole field, not just the edges.

2. Use 1 pint/acre of either Dimethoate or Chlorpyrfos. Bifenthrin at 6 oz/acre is also a good choice for OP resistant mites.

3. Must acidify the solution to under pH 5. BRANDT® Smart Trio® is a good acidifier and mitigates plant stress.

4. Coverage is key - 20 gal/acre at 40 psi or greater.

5. Watch the temperature. Hotter temperatures speed up mite life cycle.


Things to Remember:

  • Pay attention to what other insects might be feeding to determine appropriate insecticide.
  • Spraying mites at early plant growth stage may mean a second application for mites in addition to Japanese Beetles, Bean Leaf Beetles or Stink Bugs.
  • Highly recommend the addition of BRANDT® Smart Trio® and Manni-Plex® B-Moly. These are ideal conditions for a significant response with insecticide.


Retail Locations

Ashland: 217-476-3438

Auburn: 217-438-6158

Cooksville: 309-725-3710

Cropsey: 309-377-3121

Fairbury: 815-692-2612

Fisher: 217-897-6920

Franklin: 217-675-2302

Galesville: 217-489-2141

Greenview: 217-968-5589

Gridley: 309-747-2233

Lexington: 309-365-7201

Lincoln: 217-735-2571

Mt. Auburn: 217-676-3231

New Berlin: 217-488-3125

Niantic: 217-668-2228

Oakford: 217-635-5765

Pleasant Plains: 217-626-1127

Raymond: 217-229-3442

Towanda: 309-728-2294

Virginia: 217-452-3545

Waverly: 217-435-5463

Williamsville: 217-566-2113