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All Journal Jurnal Ilmu Pertanian BIOEDUSCIENCE Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Agrotek Tropika jurnal Ilmu Pertanian (Agricultural Science) Jurnal Pembelajaran dan Biologi Nukleus Nusantara Science and Technology Proceedings Journal of Applied Plant Technology Agrocentrum
Lestari, Safira Rizka
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology

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Journal : Journal of Applied Plant Technology

 1 
Response of Anthracnose Disease Intensity in Red Chili Plants (Capsicuum annuum L.) to Several Types of Fungicide Active Ingredients: Respon Intensitas Penyakit Antraknosa Pada Tanaman Cabai Merah (Capsicuum annuum L.) Terhadap Beberapa Jenis Bahan Aktif Fungisida Lestari, Safira Rizka; Hidayat, Nur
Journal of Applied Plant Technology Vol 3 No 1 (2024): Journal of Applied Plant Technology (JAPT)
Publisher : Agrotechnology Study Program, Faculty of Agriculture, Wijaya Kusuma Surabaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/38vass51

Abstract

Red chilies are one of the important horticultural products in Indonesia. One of the plant pest disease organisms which attack red chili plants is anthracnose disease caused by the fungus Colletotrichum capsici. Prevention of plant pest disease organisms, especially anthracnose disease by farmers is still oriented towards the use of pesticides. Evaluation of existing fungicides must be carried out so that possible negative impacts can be anticipated early. A Randomized Block Design was used with treatment of several types of functional active ingredients, namely Hexanocazole 50 g/L + Carbendazim 50 g/L (P1); Azoxystrobin 250 g/L (P2); Tebuconazole 430 g/L (P3); Indoxacarb 20% (P4); Simoxanil 20% (P5); Dimethomorph 50% (P6); Methyl-thiophanate 70% (P7); Mancozeb 80% (P8); Azocystrobin 200g/L + Difenoconazole 125 g/L (P9); and control or no active ingredient (P10). The results show that Simoxanil 20% fungicide has an efficacy level of more than 60% and is able to prevent the spread of C. capsici attacks in the field at a disease intensity percentage of 30%.
Characterization of Bacterial Blight Pathogen on Rice Plants in Sidoarjo Sayekti, Ninik Ari; Purnawati, Arika; Lestari, Safira Rizka
Journal of Applied Plant Technology Vol 3 No 2 (2024): Journal of Applied Plant Technology (JAPT)
Publisher : Agrotechnology Study Program, Faculty of Agriculture, Wijaya Kusuma Surabaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/xwdype52

Abstract

Rice (Oryza sativa L.) is a staple crop for all Indonesian people. Rice production in Indonesia in 2019 experienced a decline in production. Plant disease attacks are a factor that influences the decline in rice production. Bacterial leaf blight is an important disease in rice plants that can cause yield losses of up to 50%. Characterization of disease-causing bacteria needs to be carried out to develop appropriate, effective and efficient control in suppressing the development of bacterial leaf blight. The aim of this research was to characterize the morphological and physiological characteristics of the bacteria that cause bacterial leaf blight. The method used in this research included the isolation of bacteria that cause bacterial leaf blight disease carried out on rice plantations in Pulungan Village, Sedati, Sidoarjo. Identification is carried out through macroscopic and microscopic observations, analysis of physiological properties through the gram staining test, fermentative oxidative test, yellow colony test on YDC media, urease test, hypersensitivity test, and pathogenicity test. The results of the research show that the bacteria that cause bacterial leaf blight have the morphological characteristics of being yellow, round and shiny. The physiological characteristics of the bacterial isolate are gram-negative bacteria, are oxidative, yellow in YDC media, and react negatively in the urease test.
Diagnosis and Etiology of Seedling Mortality in Cavendish Banana (Musa acuminata L.) at PT Great Giant Pineapple Nursery Nugraha, Rafi Dwi; Lestari, Safira Rizka
Journal of Applied Plant Technology Vol 4 No 1 (2025): Journal of Applied Plant Technology (JAPT)
Publisher : Agrotechnology Study Program, Faculty of Agriculture, Wijaya Kusuma Surabaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/tva7gb30

Abstract

This study aimed to diagnose the causes of seedling mortality in Cavendish banana (Musa acuminata L.) at PT Great Giant Pineapple Nursery. Clinical symptoms observed included leaf wilting, root rot, and blackened corms, primarily under high-humidity conditions. Laboratory isolation and morphological identification confirmed four fungal pathogens as the primary etiological agents: Heart rot (Phytophthora sp.), Aspergillus rot (Aspergillus sp.), fruit rot (Rhizopus sp.), and damping-off (Pythium sp.). Phytophthora sp. was particularly aggressive, causing severe vascular necrosis. Environmental factors such as excessive moisture, poor drainage, and contaminated nursery substrates were found to exacerbate disease incidence. The findings underscore the need for improved nursery management, including strict sanitation, optimized irrigation, and preventive fungicide applications. Recommendations also include the use of disease-free planting materials and enhanced ventilation to reduce fungal proliferation. Implementing these measures can significantly decrease seedling mortality and improve the production of healthy Cavendish banana plants.
Co-Authors Anjani, Ajeng Distya Arika Purnawati Dita Megasari Fatimah Azzahra Fitri Wijayanti Hery Nirwanto, Hery Khasanah, Nurdiah Maghfiroh, Ainur Risma Miftakhul Maroeto Maroeto Moch. Arifin Nugraha, Rafi Dwi Nur Hidayat Penta SURYAMINARSIH Prasetyawati, Endang Triwahyu Sari, Zulfa Novita Sayekti, Ninik Ari Subhan, Aprellia Sofiatul Yenny WURYANDARI Zahra, Nabila