Alternative control of Myzus persicae in Scarlet eggplant with plant extracts

Abstract

The scarlet eggplant (Solanum gilo Raddi) is a vegetable of the Solanaceae family that suffers the attack of diverse pest, among them the aphid species Myzus persicae (Sulzer) (Hemiptera: Aphididae). The objective of this study was to evaluate the insecticidal effect of hydroalcoholic extracts of plants on Myzus persicae aphid from scarlet eggplant. Seven treatments were used: T1: control (distilled water); T2: leaves + twigs of graviola; T3: ginger rhizomes; T4: garlic bulbs; T5: neem leaves; T6: rue sheets; T7: cinnamon leaves; with ten repetitions. Three immature nymphs of aphids were deposited on leaf discs of 3 cm diameter scarlet eggplant, individualized in 9 cm diameter Petri dishes containing a cotton layer moistened with distilled water. With the aid of a hand spray, the insects received 2 mL-1 of the treatments per petri dish. The plates were closed with clear plastic film and stored in B.O.D at 26.0 ± 1.0 ° C and RH of 70 ± 10%. After 24 hours the number of dead insects was counted in the leaf disc and out of the disk. Hydroalcoholic extracts of ginger and graviola have insecticidal action on Myzus persicae in scarlet eggplant.