Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Repellent Effect of the Pandanus (Pandanus amaryllifolius Roxb.) and Neem (Azadirachta indica) Against Rice Weevil Sitophilus oryzae L. (Coleoptera, Curculionidae)

Version 1 : Received: 4 July 2021 / Approved: 6 July 2021 / Online: 6 July 2021 (08:07:57 CEST)

How to cite: Fauzi, S.; Prastowo, S. Repellent Effect of the Pandanus (Pandanus amaryllifolius Roxb.) and Neem (Azadirachta indica) Against Rice Weevil Sitophilus oryzae L. (Coleoptera, Curculionidae). Preprints 2021, 2021070123 (doi: 10.20944/preprints202107.0123.v1). Fauzi, S.; Prastowo, S. Repellent Effect of the Pandanus (Pandanus amaryllifolius Roxb.) and Neem (Azadirachta indica) Against Rice Weevil Sitophilus oryzae L. (Coleoptera, Curculionidae). Preprints 2021, 2021070123 (doi: 10.20944/preprints202107.0123.v1).

Abstract

The aim of this study was to determine the effect of Pandanus (Pandanus amaryllifolius 20 Roxb.) and Neem (Azadirachta indica) leaves powder on the repellency, mortality, and weight loss 21 of grains due to Sitophilus oryzae. The methodes of this study used a completely randomized design 22 (CRD) with 7 treatments and 4 replications. The results of this study indicate that the best treat- 23 ment in terms of causing repellency was the treatment of 10 grams of pandanus with a percentage 24 of 87.5%, while the best treatment in terms of causing pest mortality and was also able to reduce 25 the risk of rice weight loss due to Sitophilus oryzae was treatment 10 gram of neem with a mortality 26 percentage of 76.25% and weight loss of rice 3.14%. This research showed that neem leaf com- 27 pounds are better in terms of causing mortality, while Pandanus compounds are better in terms of 28 causing mortality of Sitophilus oryzae.

Subject Areas

Sitophilus oryzae; Natural insecticides; Pandanus amaryllifolius; Azadirachta indica

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