Homeopathic treatments and population density of Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) in corn plants on the field

This work was conducted to evaluate the population density of Spodoptera frugiperda in corn plants treated or non- treated with three homeopathic preparation: Doru CH4, Euchlaena CH6, Spodoptera CH30. The dilution used was 10 drops of preparation per 500 ml of water. The treatments were applied using a five-liter manual pulverizer at fourday intervals. The evaluations were made from the fourth fully-expanded leaves until the growth of the eighth leaf. The number of attacked plants by S. frugiperda was evaluated. The homeopathic preparations Spodoptera CH30 and Euchlaena CH6 reduced the population of S. frugiperda in the fourth, sixth and eighth fully-expanded leaves, reaching a satisfactory level of control.