Abstract

Abstract Three adjacent fields of corn (28, 29, and 18 acres) were divided and 0.5 of each was treated aerially with one of 3 miticides, Supracide, Lorsban or Capture, with 0.5 of each treatment applied in 2 gal water and 0.5 applied in 5 gal. Posttassel treatments were applied by a Rockwell Thrush with a 45 ft wingspan. The spray boom was equipped with no. 12 stainless steel tips with a no. 56 core calibrated to deliver 2 or 5 gal water/acre at 25 psi at 105 mph. Spider mite infestations were rated 1 to 6 on a per leaf basis. A rating of 1 = 0 mites, 2 = a few mites, 3 = a few colonies, … 6 = leaf densely covered with mites. Apparent % control was calculated using the formula presented in the table.

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