Insect Pest in Rice Field with Legumes Plot Applied by Beauveria bassiana Vuill
Sri Nur Aminah (a*), Tamrin Abdullah (a), Rosi Widarawati (b), Nurul Wirid Annisaa (c), Fitri (a)

a) Department of Plant Pests and Diseases, Faculty of Agriculture, Hasanuddin University
Jalan Perintis Kemerdekaan KM. 10 Tamalanrea Makassar 90245

b) Agrotechnology Program, Faculty of Agriculture, Jenderal Soedirman University,
Jalan Dr. Soeparno No. 61, Karangwangkal Purwokerto 53123, Central Java, Indonesia

c) Magister Student of Phytopathology, Post Graduate Program Bogor Agricultural University,
Jalan Raya Dramaga, Babakan Kecamatan Dramaga Bogor 16680, West Java, Indonesia

*e-mail: srifirnas[at]gmail.com


Abstract

The research objective is: to study diversity of insect pests in rice field used plot grow of legumes and effect spraying of entomopathogenic B. bassiana. Observation rice pests and legumes plant was held in Mappadaelo village, Wajo Regency, South Sulawesi. Identification of insect pests held at the Pest Laboratory, Faculty of Agriculture, Hasanuddin University Makassar, from August to October 2019. Experiments used Mekongga as the rice variety grow in four different fields, distance 200 - 300 m. The plot with legumes (mung bean, cowpea and long bean), planting a week after rice. The methods of cultivating rice and legumes plants based on the habit of farmers. The study used a Randomized Block Design with eight treatments and four replications. The observation insect pests in both plant started from 14 days after planting with 10 samples. Insect collection used D-Vac and put in bottle containing alcohol. The suction of D-Vac has interval seven days. The result showed: the highest diversity of insect pests without B. bassiana spraying found in rice and mung beans (P1) of -0.71. The lowest result was showed P3 (rice and long bean) about -0.65. The diversity of insect pests in rice was sprayed B. bassiana about -2.28. The highest diversity index by spraying B. bassiana found at P7 (rice and long beans) of -0.75. The lowest insect diversity index was P6 (rice and cowpeas) of -0.45. The conclusion: spraying of the B. bassiana showed effect on the diversity index of insect pests in rice field.

Keywords: B. bassiana, rice, mung bean, cowpea, long bean

Topic: Integrated Pest and Disease Management

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