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All Journal Cropsaver : Journal of Plant Protection AGROLOGIA : Jurnal Ilmu Budidaya Tanaman
Entun Santosa
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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Potential Toxicity Of Some Plant Metanol Extracts Against Aedes aegepti (L). Larvae Ernaldi Eka Nanda; Entun Santosa; Danar Dono
CROPSAVER Vol 1, No 1 (2018)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (272.448 KB) | DOI: 10.24198/cs.v1i1.16993

Abstract

Resistance is a decrease in the level of sensitivity of a pest populations that causing a previously effective pesticides becoming ineffective. This case is caused by inappropriate insecticides application, continuous use, only one type of pesticide and usage for long periods of time. There are a lot alternative source of insecticides which is more effective and environmentally friendly. One alternative source of insecticides that can be used for pest control is plants. This study aimed to determine the potential toxicity of methanol extract of N. tabacum, B. asiatica, V. zizanoides, A. indica, and T. vogelli on the mortality and development time of A. aegypti mosquito larvae. The research was conducted at the Laboratory of Pesticides and Environmental Toxicology, Department of Plant Pests and Diseases, Faculty of Agriculture, Padjadjaran University, Jatinangor. The experiment was performed using a Completely Randomized Design (CRD) with 6 treatment and 4 replication. The result showed that methanol extracts of the test material were toxic to the larvae A. aegypti with the highest the lowest toxicity were at the concentration of 0.001% i.e treatment of T. vogelli, N. tabacum, B. asiatica, A. indica, and V. zizanoides with the successive rate of mortality (45%, 65%), (37.5%, 60%), (32.5%, 50%) and (32,5%, 47.5%). Besides being toxic, the methanol extract also influenced development of A. aegypti larvae. The pH levels and the dissolved oxygen content of the tested methanol extract solution at the concentration of 0.005% in each treatment are not much different when compare with controls.
Populasi Hama Wereng Batang Coklat (Nilaparvata lugens Stal.), Keragaman Musuh Alami Predator Serta Parasitoidnya Pada Lahan Sawah Di Dataran Rendah Kabupaten Indramayu Martua Suhunan Sianipar; Andang Purnama; Entun Santosa; R.C. Hidayat Soesilohadi; Wahyu Daradjat Natawigena; Nenet Susniahti; Akbar Primasongko
Agrologia Vol 6, No 1 (2017)
Publisher : Faculty of Agriculture, Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v6i1.245

Abstract

Population of brown plant hopper (Nilaparvata lugens Stal) is one of the major rice pest that is threatening rice production in Indramayu. Integrated pest management is needed to control the population of brown plant hopper (BPH). To construct effective strategy of Integrated Pest Management, a survey to obtain information about the population of BPH and the diversity of its natural enemies predator and parasitoid is required. The result of the survey showed that fluctuation of BPH population was evidence. BPH occurs from the 1st week of observation and the population was rising until the 5th week of observation and hence the population declined until the 12th week of observation. This population decline was caused by BPH’s live cycle followed the growth phase of rice plant. Correlation between climate factors and fluctuation of BPH population was not significant. Based on Shanon-Wiener diversity index analysis, the diversity of natural predators of BPH was medium with the value of H’ of 1,83 due to  uniform field condition
Co-Authors Akbar Primasongko Andang Purnama Danar Dono Ernaldi Eka Nanda Martua Suhunan Sianipar Nenet Susniahti R.C. Hidayat Soesilohadi Wahyu Daradjat Natawigena