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All Journal Jurnal Biologi Tropis G-Tech : Jurnal Teknologi Terapan
Wiridannisaa, Nurul
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Energy Engineering Immunology & microbiology

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Effect of Superior Varieties and Insecticides on Pest Control and Food Safety of Groundnut (Arachis hypogaea L.) Prihatin , Prihatin; Wiridannisaa, Nurul; Abdullah, Tamrin
G-Tech: Jurnal Teknologi Terapan Vol 9 No 2 (2025): G-Tech, Vol. 9 No. 2 April 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i2.6750

Abstract

Groundnut (Arachis hypogaea L.) is a vital protein source supporting nutrition and sustainable farming, yet its productivity in Indonesia remains low due to pests and poor cultivation.This study aims to evaluate the effectiveness of a combination of superior varieties and types of insecticides in suppressing pest populations and increasing yields. The research was conducted in Sambueja Village, Maros Regency, using a Randomized Group Design (RAK) with four treatments: A1 (local seed + deltamethrin chemical insecticide), A2 (local seed + bogenvil vegetable insecticide), B1 (Takar 2 + chemical insecticide), and B2 (Takar 2 + vegetable insecticide), each with three replications. Results indicated that treatment B1 gave the highest yields: plant height 45 cm, number of leaves >20, wet weight 287.42 g, and number of pods 286.93 per plant. Treatment B2 was also high: 261.98 g wet weight and 261.49 pods. Treatments with local varieties gave lower yields. The use of improved varieties such as Takar 2, especially in combination with effective insecticides, is proven to increase productivity. However, chemical insecticides risk leaving residues that impact natural enemies, health, and the environment. In contrast, plant-based insecticides, while slower, are an environmentally friendly alternative that supports sustainable and safe agriculture.
Identification of Begomoviruses Causing Yellow Curl Disease in Chilli in West Java Wiridannisaa, Nurul; Kasim, Niken Nur; Prihatin, Prihatin
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i3.9838

Abstract

Begomoviruses are among the most destructive plant viruses infecting chili (Capsicum annuum L.), leading to significant yield losses in tropical and subtropical regions. In Indonesia, particularly in West Java, the incidence of viral diseases in chili plants has increased, yet molecular identification of the causal agents remains limited. This study aimed to detect and characterize Begomovirus infections in chili plants from Cianjur and Bogor using molecular techniques. Symptomatic leaf samples showing chlorosis, curling, and stunted growth were collected and analyzed using Polymerase Chain Reaction (PCR) with universal Begomovirus primers (SPG1/SPG2). Amplicons were sequenced and compared using BLAST analysis to determine nucleotide identity and phylogenetic relationships. Results showed that all tested samples were positively infected with Begomovirus, with sequence homologies ranging from 87% to 96% with Pepper yellow leaf curl Indonesia virus (PYLCIV). Phylogenetic analysis revealed that isolates from Cianjur and Bogor clustered differently, indicating genetic variability possibly influenced by agroecological conditions and seed exchange practices. Findings highlight the presence of multiple Begomovirus species infecting chili in West Java and underscore the importance of early molecular detection in managing viral diseases. It is recommended that integrated disease management strategies be developed, including the use of virus-free seedlings, resistant cultivars, and region-specific monitoring systems.
Estimation of Yield Loss Due to Striped Disease in Peanut Plants in Palopo City, South Sulawesi Kasim, Niken Nur; Prihatin, Prihatin; Sukmawati, Sri; Wiridannisaa, Nurul
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i2.6641

Abstract

Palopo City is one of the peanut production centres in South Sulawesi. However, from 2008 to 2020, groundnut production in Palopo City has decreased. Recently, in South Sulawesi, it was reported that peanut stripe virus infection has spread widely and evenly in peanut plants. Symptoms of stripe disease include dark green and light green leaf colour, chlorosis, and can cause stunting. This study aims to determine the estimation of yield loss caused by stripe disease in peanut plants in Polopo City, South Sulawesi. This research was conducted in a farmer-owned groundnut field located in Purangi Village, Sendana Subdistrict, Palopo City, South Sulawesi, from January to May 2023. Parameters observed were plant height, disease severity and incidence, and yield loss. Observations were made 6 times on plants aged 4 to 9 weeks after planting. The results showed that the symptoms of striped disease showed that the growth of peanut plant height was inhibited, and caused a decrease in the number of pods, pod weight, and pod number. Disease severity increased to 57.2% and disease incidence to 46.6%. Yield loss caused by stripe symptoms in peanut plants was 43.78%, indicating that high disease severity and incidence can reduce yield.
Co-Authors Niken Nur Kasim, Niken Nur Prihatin , Prihatin Prihatin Prihatin, Prihatin Sri Sukmawati TAMRIN ABDULLAH