Screening of Insecticides Against the Changa and the Southern Mole Cricket Attacking Seedling Millet123

Abstract

Since southern mole crickets, Scapteriscus acletus Rehn & Hebard, and changa, S. vicinus Scudder, severely damage fields of millet in southern Georgia by killing seedlings, thus causing marked reductions in plant stand, 10 insecticides in bait or granular formulations at various concentrations were screened for activity against these insects. N-2790 bait ( O -ethyl S-phenyl ethylphosphonodithioate), Kepone® bait (decachlorooctahydro-1,3,4-metheno-2H-cyclobuta[cd]pentalen-2-one), N-2790 granules and/or Mobil MC-A-600 granules (benzo[b]thien-4-yl methylcarbamate), and trichlorfon granules applied to the soil surface of millet fields killed large numbers of mole crickets, reduced the loss of stand, and increased the yield of millet forage. When both formulations were applied, baits were slightly more effective than granules.