Uji Beberapa Konsentrasi Ekstrak Tepung Akar Tuba (Derris eliptica Benth.) Untuk Mengendalikan Hama Ulat Api Setora nitens Wlk. (Lepidoptera; Limacodidae) Pada Tanamankelapa Sawit (Elaeis guineensis Jacq.)
Abstract: Nettle caterpillar
Setora nitens Walker. is one of the major pests of oil palm plant. The use of
synthetic chemical pesticides to control pest has many negative impacts such a
pest resistance, pest resurgence and environmental pollution. To reduce the
negative impacts cause by synthetic chemical pesticides, then application of
the alternative pest control using botanical insecticides such as Derris
eliptica Benth. Which is environmentally friendly is needed. This research is
aims to test the effectiveness of some concentration of Derris eliptica Benth.
root powder and to obtain the proper concentration to control Setora nitens
Wlk. on oil palm plant (Elaeis guineensis Jacq.). This research was conducted
at the Laboratory of Plant Pest and in the Technical Unit (UPT), Experimental
Field Faculty of Agriculture, University of Riau. Using completely randomized
design (CRD) with 5 treatments and 4 replications. The treatments one 30 g
Derris eliptica root powder/litre of water (30 g/l water) , namely AT 2, (40
g/l of water) , AT 3 (50 g/l of water) , AT 4 (60 g/l of water) and AT 5 (70
g/l of water). Data has been analyzed using analysis of variance and furthen
testing using Duncan’s New Mulitiple Range Test at the 5% level. The result of
the result research indicate that concentration of 50 g/l of water is an
effective concentration to kill S. nitens because cause total mortality 84.37%
, early death of S. nitens achieved in 2,5 hours. Lethal concentration of
Derris root powder kill 95% of test insects S. nitens larvae was 5.5% ,
equivalent to 55 g/l of water, within the range of approaches to 50 and 60 g/l
of water of treatments .
Penulis: Wahyudianto, Jeltje
Hennie Laoh, Rusli Rustam
Kode Jurnal: jppertaniandd140656