CD Skripsi
Uji Beberapa Konsentrasi Ekstrak Daun Sirih Hutan (Piper Aduncum L.) Terhadap Mortalitas Ulat Daun Bawang Merah Spodoptera Exigua Hbn. Di Laboratorium
ABSTRACT Forest betel (Piper aduncum L.) is a plant of the Piperaceae family whose leaves and fruit have potential as a vegetable insecticide. P. aduncum contains the active compound piperamide which is entered as a contact poison and works as a neurotoxin by interfering with nerve impulses in nerve axons. This study aims to obtain an effective concentration of betel leaf extract (Piper aduncum L.) on the mortality of red onion leek caterpillar Spodoptera exigua Hbn in the laboratory. This research was carried out experimentally using a completely randomized design (CRD) with 5 treatments and 4 replications to obtain 20 experimental units. The treatments given were 100 g.l-1 water, 90 g.l-1 water, 80 g.l-1 water, 70 g.l-1 water and 60 g.l-1 water. Parameters observed were time of initial death (hours), lethal time 50 (hours), lethal concentration (LC50 and LC 95) (%), daily mortality (%), total mortality, temperature and humidity. The results showed that a concentration of betel leaf extract 100 g.l-1 water was an effective concentration in controlling S. exigua larvae because it was capable of causing a total mortality of 90% with an initial death time of 5 hours after application and a lethal time of 50 at 64 hours after application whereas the right concentration to kill 50% of the test insects is 6.77% or the equivalent of 67.7 g.l-1 of water, the right concentration to kill 90% of the population of S. exigua larvae is 11.11% or the equivalent of 111.1 g.l-1 water.
Keywords: Betel nut (Piper aduncum L.), Onion, Spodoptera exigua Hbn.
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