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.
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