UJI BEBERAPA KONSENTRASI EKSTRAK TEPUNG DAUN SIRIH HUTAN (Piper aduncum L.) TERHADAP HAMA TANAMAN JAGUNG (Spodoptera frugiperda J. E. Smith) DI LABORATORIUM

Abstract

Corn ( Zea mays L.) is the second staple food after rice in Indonesia. The main problem in corn cultivation is the attack of Spodoptera frugiperda J.E. Smith. The S. frugiperda pest can cause a loss of 73% yield, if the affected plant population reaches 100%. The control using botanical pesticides extracts of forest betel leaf ( Piper aduncum L.) is an alternative for controlling S. frugiperda . This study aimed to obtain an effective concentration of forest betel leaf powder extract to control S. frugiperda . The research was carried out at the Plant Pest Laboratory and Experimental Garden, Faculty of Agriculture, Riau University. This study was conducted from February 2020 to April 2020. This study used a completely randomized design (CRD) with five treatments and four replications in order to obtain 20 experimental units. The treatments given were the concentration of forest betel leaf powder extract 0 g.l -1 water, 25 g.l -1 water, 50 g.l -1 water, 75 g.l -1 water and 100 g.l -1 water. The results showed that the concentration of 75 gl -1 water was an effective concentration to control  S. frugiperda with an initial time of death of 11.75 hours, lethal time of 50 at 43.25 hours after application, the highest daily mortality on the second day at 52.5% and total mortality is 80% in the 5 days after application.