The effectiveness of coconut coir liquid smoke as a natural insecticide on the mortality of Spodoptera exigua Hubner (Lepidoptera: Noctuidae)
Department of Agrotechnology, Faculty of Agriculture, Tadulako University, Palu 94228, Central Sulawesi, Indonesia.
Research Article
Open Access Research Journal of Life Sciences, 2023, 06(01), 075–080.
Article DOI: 10.53022/oarjls.2023.6.1.0055
Publication history:
Received on 26 June 2023; revised on 05 August 2023; accepted on 08 August 2023
Abstract:
This research was conducted at the Laboratory of Pests and Diseases, Faculty of Agriculture, University of Tadulako, Palu, from Juli 2022 to November 2022. This study used a Complete Randomized Design (CRD) which consisted of 5 treatments that were repeated 4 times to obtain 20 experimental units. The treatments were K1 = (control), K2 = liquid coconut coir smoke concentration of 2.5 ml/L, K3 = liquid coconut coir smoke concentration of 5 ml/L, K4 = liquid coconut coir smoke concentration of 7.5 ml/L, and K5 = coconut coir liquid smoke concentration of 10 ml/L. Observations included mortality and speed of death of Spodoptera exigua. The results showed that the concentration of coconut coir liquid smoke treatment had a significant effect on the mortality and speed of death of S. exigua. The K5 treatment (10% concentration) gave higher mortality and death rates, namely 65% and 3.77 respectively.
Keywords:
Coconut coir liquid smoke; Natural insecticide; Shallot; Spodoptera exig
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