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All Journal Indonesian Journal of Agricultural Science BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian JURNAL AGRICA Jurnal Ilmiah Pertanian ( JIPERTA) Journal of Natural Sciences Makara Journal of Science
Azwana Azwana
Faculty of Agriculture, Medan Area University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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Inventarisasi Penyakit di Kebun Salak Pondoh (Salacca Zalacca Var Pondoh) di Desa Rumah Lengo Kecamatan STM Hulu Kabupaten Deli Serdang Sumatera Utara Ameliya, Ameliya; Azwana, Azwana
Jurnal Ilmiah Pertanian (JIPERTA) Vol 6, No 2 (2024): Jurnal Ilmiah Pertanian (JIPERTA), September
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jiperta.v6i2.5218

Abstract

Salak pondoh (Salacca zalacca var pondoh) is a plant native to Indonesia and this fruit has quite high value and is liked by many consumers in Indonesia. However, the quality of snake fruit can decrease due to damage caused by plant pathogens such as fungi (fungi). This of course can result in snake fruit being unfit for consumption because it is damaged. The results of the research found that there are three types of diseases that attack Pondoh salak plants which are caused by fungi, namely brown leaf spot disease caused by the fungus Pestalotia sp. with an attack intensity of 42%-54%, stem rot disease caused by the fungus Corticium salmonicolor with an attack intensity of 26%-30%, and fruit rot disease caused by the fungus Chalaropsis sp. with an attack intensity of 20% -23%. The cause of fungal disease attacks on Pondoh salak plants is also triggered by the humid environmental conditions around the Pondoh salak plantations and the rainy season, making it easier for the fungus to reproduce.
Morphological, Molecular, and Morphometric Analysis of Aphelenchoides besseyi on Organic Rice (Oryza sativa) Seeds in the Beringin District, Deli Serdang Regency, Indonesia Suswati, Suswati; Azwana, Azwana; Candra, Ifan Aulia; Kuniawati, Fitrianingrum; Siregar, Khofifah Muhaimini; Hasanah, Asmaul; Nasution, Aldy Elvanandar
Makara Journal of Science
Publisher : UI Scholars Hub

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Abstract

Aphelenchoides besseyi, a nematode, can infect rice resulting in the white shoot disease, which decreases the germina-tion rate and even causes seedling death. A. besseyi has recently been reported to mainly attack the organic rice varie-ties especially Pandanwangi and Ciherang in the Pasar Kawat, Beringin District, Deli Serdang, Indonesia. This research investigated A. besseyi via morphological, molecular, and morphometric approaches. The nematodes were observed in an area of 2000 m2, divided into five sample plots each with an area of 400 m2 on which Pandan Wangi and Ciherang rice were cultivated. Nematode morphology was observed using a stereo microscope at a 10–100x magnification. Mo-lecular identification employed PCR, followed by sequencing and phylogenetic analysis. This nematode possessed typ-ical morphological characteristics namely a longer female body (457.07–738.86 µm) than males (385.23–505.29 µm), and cured spicules, 17 to 21 µm long. The tail was ribbon-shaped with a tapered tip that had a mucrone with 2–4 points. Sequencing and phylogenetic analysis revealed that A. besseyi isolated from Indonesia (Deli Serdang/North Sumatra) was closely related to those from China, India, Russia, Taiwan, and Portugal with a 98% homology level.
Jenis Ekstrak Tanaman sebagai Mollusida Nabati terhadap Hama Parmarion martensi pada Tanaman Kubis secara In Vitro Azwana, Azwana; Kuswardani, Retna Astuti; Sarumaha, Agustinus
Journal of Natural Sciences Vol 6, No 2 (2025): Journal of Natural Sciences Juli
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v6i2.680

Abstract

Parmarion martensi is a major pest of cabbage crops, causing damage that reduces both quality and market value. The use of botanical pesticides as an alternative control method has not been widely studied. This study aimed to evaluate the effectiveness of extracts from Aegle marmelos (maja fruit), Azadirachta indica (neem leaves), and Carica papaya (papaya leaves) in controlling P. martensi. The experiment was conducted using a Completely Randomized Design (CRD) with 11 treatments and 3 replications. Treatments included a negative control (A0), synthetic pesticide (A1), and plant extracts at concentrations of 20%, 25%, and 30% (A2–A10). The results showed that neem leaf extract at 30% (A7) produced the highest mortality rate, reaching 93.3% at 5 days after application (DAA), with an average feed consumption of 0.39 g/day. Probit analysis indicated an LC₅₀ of 20.3% and an LT₅₀ of 3.6 days, suggesting a strong toxic effect. These findings indicate that neem leaf extract at 30% concentration has potential as a botanical molluscicide to replace chemical pesticides.
Co-Authors Agustiar agustiar Ahsol Hasyim Ameliya, Ameliya Asrul Asrul Babara Dalimunthe, Muhajir Candra, Ifan Aulia Erwin Pane, Erwin Ginting, Natal Hasanah, Asmaul Kuniawati, Fitrianingrum L. Panggabean, Ellen Miftahuddin Miftahuddin Nasution, Aldy Elvanandar Rahmaniah, Rahmaniah Retna Astuti Kuswardani Sarumaha, Agustinus Siregar, Khofifah Muhaimini Siti Mardiana suswati suswati Syafril Syafril Wulan Sari, Dewi Yusniar Lubis Zannah, Rizky Raudatul Zuhry, Salman