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All Journal Jurnal Ilmu-Ilmu Pertanian Indonesia AGRITROPICA : Journal of Agricultural Sciences
Priyatiningsih Priyatiningsih
University of Bengkulu
Agriculture, Biological Sciences & Forestry

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DETEKSI VIRUS TUNGRO PADA PADI DI BENGKULU Mimi Sutrawati; Yenny Sariasih; Priyatiningsih Priyatiningsih; Fausiah T. Ladja
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 21, No 2 (2019)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.21.2.99-102

Abstract

[DETECTION OF TUNGRO VIRUS ON RICE IN BENGKULU]. Several types of viruses have been reported to infect rice plants in Indonesia, including tungro, dwarf grass, and empty dwarfs. The spread of tungro in Indonesia in the beginning was only limited to certain regions in South Sulawesi, South Kalimantan, West Nusa Tenggara and North Sulawesi, but later it expanded to East Java, Central Java and Yogyakarta. In this study a tungro disease survey was conducted in several areas in Bengkulu Province. Virus detection is done by Loop-medated isothermal amplification (LAMP). Observations in the field showed that there were typical symptoms of tungro infection in rice plants, namely orange leaves starting from leaves to 2 and 3, little tillers, stunted plant growth. The results of detection with LampPCR showed rice samples from the district Pondok Kelapa Kab Bengkulu Tengah is positively infected with tungro virus.
Entomopatogen nematode exploration and virulency against Spodoptera frugiperda J.E Smith Winda Septi Hade; Djamilah Djamilah; Priyatiningsih Priyatiningsih
AGRITROPICA : Journal of Agricultural Sciences Vol 3, No 2 (2020)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agritropica.3.2.70-81

Abstract

Corn (Zea mays L) is a very important food and animal feed after rice. One of the important pests that attack corn plants is Spodoptera frugiperda J.E Smith. This pest is a new pest and is a major pest in corn. In pest control, farmers generally use synthetic chemicals. In an effort to reduce these negative impacts synthetic chemical, entomopathogenic nematode (NEP) was chosen as one of the more environmentally friendly control techniques. This study aims to obtain NEP isolates, population density and virulence against S. frugiperda. This research was conducted at the Plant Protection Laboratory, Bengkulu University from December 2019 to April 2020. This study used a Factorial Completely Randomized Design (CRD) with 4 treatments and 5 replications. The treatments consisted of NEP concentrations : 0 Jl / ml; 200 Jl / 1ml; 400 Jl / 2ml; 600 Jl / 3ml originating from Bengkulu and Kepahiang isolates. Each experiment consisted of 3 S. frugiperda larvae. The results showed that the NEP obtained from each region, namely the genus Steinermatidae. Population density  of 9,005 NEP / 5ml in the Kepahiang area and 6,837 NEP / 5ml in the Bengkulu region. NEP virulence test against S. frugiperda larvae showed that  200 Jl / ml concentration was able to control S. frugiperda in maize , and can kill pests within 4 days. With an LC50 value of 163.5 Jl / ml in Kepahiang isolates and 186.5 Jl / ml in Bengkulu isolates.
INCIDENCE OF LEAF AND FRUIT EATER, Diaphania indica (Saunders) IN MELON AT SRI KUNCORO VILLAGE, PONDOK KELAPA SUBDISTRICT, BENGKULU TENGAH REGENCY Nadrawati Nadrawati; Agustin Zarkani; Priyatiningsih Priyatiningsih; Aprilian Pitoyo
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 25 No 1 (2023)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.25.1.40-44

Abstract

Melon is a fruit plant that has the potential to be developed and can become a superior horticultural product. The demand for melons continuously increases yearly, requiring a large and continuous supply. Fruit must be available at any time in sufficient quantity and quality to be used as an agricultural commodity with high economic value. Diaphania indica (Lepidoptera: Crambidae) is a significant pest that attacks the leaves and fruit of the Cucurbitaceae family, including economically important crops such as melon. Studies on Diaphania pests that attack melon leaves and fruit have not been widely studied in Indonesia. Also, due to the cases happening of leaf and fruit-eating attacks in Bengkulu, proper pest control efforts are needed. One of the basics for determining how to control is to know the population density and the level of damage caused by these pests. This research was conducted on the farmers' land in Sri Kuncoro Village, Pondok Kelapa Sub-District, Bengkulu Tengah Regency, November 2021-January 2022. The variables observed were the population density of D. indica, the percentage of leaf damage, and the percentage of parasitic larvae. The results showed variations in the density of D. indica larvae and the percentage of leaf damage. The mean population density of larvae was 1.47 per plant, and the percentage of infected leaves was 29.49%. Parasitoids associated with D. indica larvae were found in Apanteles spp, with a percentage of parasitized D. indica larvae of 46.67%. 
Co-Authors Agustin Zarkani Aprilian Pitoyo Djamilah Djamilah Fausiah T. Ladja Mimi Sutrawati Nadrawati Nadrawati Winda Septi Hade Yenny Sariasih