Paraeucosmetus pallicornis (Dallas) is a new pest in Indonesia which decreases rice production and quality. This pest causes the grains to become flat, hollow, brownish, break easily when milled, and bitter. This research represents the first study on Calotropis gigantea extract as an oviposition deterrent and ovicide against P. pallicornis. The study was conducted under laboratory conditions using four extract concentrations i.e. 0.5, 1.0, 1.5 and 2.0%. The oviposition deterrent effect was determined by counting the number of eggs laid and hatched. Percent reproductive control (PRC) and ovicidal activity was calculated using Tennyson's formula. Results indicated that all concentrations of C. gigantea leaf extract reduced the number of eggs laid and hatched. The PRC also showed a gradual reduction of oviposition of the P. pallicornis and the ovicidal activity ranged between 86.5 and 100%. The extract concentration which showed the highest potential as an oviposition deterrent and ovicide against P. pallicornis was in the range of 1.0-2.0%. The overall results indicated that C. gigantea leaf extract has the potential to be used as an oviposition deterrent and ovicide against P. pallicornis.

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Spodoptera sp. is the main pest in food crops and horticulture that can reduce production by up to 80% Control is carried out only using chemicals that can damage the environment and impact human health. so, efforts are needed for pest control by utilizing Ageratum conyzoides extracts that are more environmentally friendly. This study aims to find out the effects of A. conyzoides extract on Spodoptera sp. pests on rice plants. The study consisted of plant extraction of A. conyzoides, rearing of Spodoptera sp. and application of A. conyzoides extract on Spodoptera sp. The concentrations used are 1%, 1.5%, 2%, 2.5%, 3% and control. The results showed that the best treatment was obtained at concentrations of 3% and 2.5% with mortality percentages of 90% and 96.67%. The results of probit analysis obtained LC 50 and LC 90 concentrations of 1.59% and 2.53%, respectively, analysis at 72 hours after treament. Therefore, A. conizoides extract potential to be used for controlling Spodoptera sp.