The Effect of Neem Seed Oil (Azadirachta indica) and Clove Leaf Oil (Syzygium aromaticum) Mixture on Cabbage Head Caterpillars (Crocidolomia pavonana)

Abstract

Crocidolomia pavonana is one of the important pest in Brassicaceae family. The used of botanical pesticides such as neem and clove can be used as alternative control for C. pavonana. This study aimed to examine the effect of neem oil, clove oil, and its mixture to C. pavonana. This experiment was conducted from November 2019 to May 2020 at the Laboratory Pesticides and Environmental Toxicology of the Department of Plant Pests and Diseases of the Faculty of Agriculture, Universitas Padjadjaran. The experimental method used in this research was Randomized Block Design with 21 treatments, i.e control, neem oil, clove oil, and its mixture at concentrations of 0,1%, 0,25%, 0,5%, and 1%, each treatments was replicated 3 times. The result of this experiment showed that single or mixed treatments (Neem : Clove) at consentration of 1% caused 100% larvae mortality. Mixed treatment at ratio 1:1 could inhibits the formation of pupa and imago, and could prolong the development time of larvae in instar II-III and instar II-IV. In addition, mixed treatment at ratio 2:1 was also prolong the development time of larvae in instar II-pupa, reduce food consumption, inhibit the formation of imago, and reduce the number of eggs C. pavonana.

Active compounds and biological activities of geranium aralia (Polyscias guilfoylei (W. Bull) L.H. Bailey) leaf extract against larval stage of melon fly (Zeugodacus cucurbitae Coquillett)

“…1). This was consistent with Ginasti et al, (2020) that reported the provision of clove leaf oil at 0.25% caused abnormal imagoes, characterized by curly wings and individuals that still has pupal skin attached to parts of the body. Clove leaf oil contains tannins compounds that act as stomach toxins, which can inhibit the activity of digestive enzymes so that insects lack nutrients.…”

“…This was supported by Kaur et al (2021) who reported that the ratios of male to female insects of melon fly treated with neem oil, cedar oil and pongamia oil were lower than for the control, as neem oil, cedar oil and pongamia oil can be antifeedants, toxins, growth regulators and growth inhibitors against most plant pests. In addition, Ginasti et al (2020) stated that neem seed oil and clove leaf oil could reduce the number of adults that successfully matured.…”

Bioactivity of extracts from Syzygium aromaticum, Annona muricata, and Piper retrofractum against Spodoptera frugiperda J. E. Smith (Lepidoptera: Noctuidae)

“…Botanical insecticides from S. aromaticum contain compounds of eugenol, eugenyl acetate, ßcarophyllene methyl eugenol, and tannin [23,24,36]. Eugenol can poison by contact with nerve of Trichoplusia ni Hubner (Lepidoptera: Noctuidae) [5,8], while tannin act as stomach poison by inhibiting the activity of digestive enzymes of Crocidolomia pavonana F. (Lepidoptera: Crambidae) [24].…”

Keefektifan Ekstrak Daun Pluchea indica dan Chromolaena odorata sebagai Bioinsektisida Terhadap Mortalitas Larva Plutella xylostella

“…Kombinasi antara ekstrak daun P. indica dan C. odorata perlu dilakukan untuk memadukan senyawa metabolit sekunder di kedua tanaman tersebut. Hasil serupa diungkapkan oleh Ginasti et al (2020) bahwa kombinasi minyak biji mimba dan minyak daun teh konsentrasi 1 % merupakan perlakuan paling efektif terhadap mortalitas Crocidolomia pavonana, dengan nilai mortalitas sebesar 100%. Daun C. odorata dan P. indica memiliki kandungan senyawa aktif yang berperan terhadap mortalitas larva P. xylostella.…”