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All Journal Jurnal Lahan Suboptimal Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Seminar Nasional Lahan Suboptimal
Harman Hamidson
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Agriculture, Biological Sciences & Forestry Chemistry Mathematics Physics Other

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Effect of Curcuma Zanthorrhiza on Population and Infectivity of Pentalonia Nigronervosa as A Vector of Banana Bunchy Top Virus Disease Arsi; Suparman; Yulia Pujiastuti; Chandra Irsan; Rahmatul Khaira; Harman Hamidson; Arinafril; Titi Tricahyati
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 22 No. 1 (2025): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v22i1.17167

Abstract

BBTV (Banana Bunchy Top Virus) is a viral disease that attacks cultivated banana plants and can cause stunting. The symptoms of BBTV disease attack on banana plants are narrowed, piled up leaves and stunted plants. The disease is caused by an insect vector. Pentalonia nigronervosa is the vector insect that transmits BBTV disease. The purpose of the research was to see the java turmeric plant as an alternative host for population growth and BBTV disease vector. The method in the study used a Randomized Group Design. This treatment consists of two treatments with 10 replications. Based on the results of research conducted on the population of P. nigronervosa experienced fluctuations, but high growth in water media. BBTV disease that attacks banana plants in each treatment has the highest incidence in the control treatment, namely, 73.33% dan the lowest disease incidence the turmeric treatment was 6.67%. The highest intensity of BBTV disease attack in the control treatment was 42.06%, while the lowest in the Javanese turmeric treatment was 1.50%. P. nigronervosa inoculated on Javanese turmeric for 72 days can suppress BBTV disease transmission. However, based on the analysis of each treatment, no significant differences were found. P. nigronervosa has the highest population in the soil medium 95.4 individuals and water medium 86.7 individuals. The population of P. nigronervosa has a good development in turmeric plants.
The Efficacy of Citronella Extract (Cymbopogon nardus L.) in Inhibiting The Development of Anthracnose Disease in Chili Plants (Capsicum annuum L.) Titi Tricahyati; Harman Hamidson; Arsi; Suparman; Chandra Irsan; Filli Pratama; Ahmad Sultoni Pulungan
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 22 No. 1 (2025): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v22i1.18174

Abstract

Chili (Capsicum spp.) are members of the Solanaceae family, which includes many cultivated plants. They are frequently used by farmers and have a spicy taste that makes them a popular ingredient in Indonesian cuisine.The objective of this study is to observe the effect of citronella extract on the inhibition of anthracnose disease caused by Colletotrichum capsici in chili plants.This disease, caused by the aforementioned pathogen, manifests as blackish-brown patches on the affected area. The affected area undergoes desiccation and detachment over time.The experimental design employed a Group Randomized Design (GRD) method, comprising six treatments (P0, P1, P2, P3, P4, P5), each repeated five times.The experimental treatment involved the application of citronella extract, varying in dosage concentration among the treatments. This research was carried out on the Agrotech Training Center land of the Faculty of Agriculture, Sriwijaya University.
The Effectiveness of Liquid Trichoderma harzianum Application in Enhancing Tomato Growth (Solanum lycopersicum L.) and Suppressing Fusarium Wilt Disease Riana, Nanda; Harman Hamidson; Chandra Irsan
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 22 No. 1 (2025): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v22i1.18186

Abstract

Trichoderma is used as a biological control agent, this fungus has microparasitic and antibiotic properties against soil-borne pathogens. This study aims to investigate the impact of Trichoderma on tomato growth and the progression of Fusarium wilt disease infection. The method used was the Complete Randomized Design (CRD) method. Data from the observation of the intensity of Fusarium wilt disease attack on tomato plants with treatments (P1, P2, P3, P4, P5) showed no significant differences. The treatment of Trichoderma on plant height, number of leaves, number of flowers, number of fruits, and intensity of attack did not have a significant effect in suppressing the development of Fusarium wilt disease infection in tomato plants. Trichoderma application treatment that had the highest effect on tomato plant growth was found in treatment P4 (tomato seedlings soaked for 25 minutes using Trichoderma). The treatment with the lowest intensity of Fusarium wilt attack was found in treatment P5 (Trichoderma incubation in the soil 10 days before planting), showing a better reduction in wilt intensity compared to other treatments.
Produksi spora Bacillus thuringiensis pada media limbah dengan penambahan tepung cangkang keong mas dan toksisitasnya terhadap Spodoptera litura Fabr. (Lepidoptera:Noctuidae) Yulia Pujiastuti; Triyansyah Triyansyah; Harman Hamidson; Effendy Effendy; Suparman Suparman
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 6 No. 2 (2017): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33230/JLSO.6.2.2017.294

Abstract

Pujiastuti et al, 2017. Production of Bacillus thuringiensis Spores in Agricultural Waste with Addition of Golden Snail Shell Powder and its Toxicity Against Spodoptera litura Fabr. (Lepidoptera: Noctuidae). JLSO 6(2):150-157.Armyworm or Spodoptera litura is an important pest on the cultivation of plants. Controlling by using biological agents such as Bacillus thuringiensis is an alternative to the use of chemical insecticides which cause a negative impact on insects and environment. B. thuringiensis-based bio insecticide can be reproduced by using agricultural waste with the addition of golden snail shell flour. The study was aimed to investigate the production of B. thuringiensis spores on agricultural waste media and the addition of golden snail shell flour and its toxicity to armyworm, as well. The research design was a completely randomized design with 10 treatments and 3 replications. Treatment were the media of agricultural waste: 50 mL coconut water, 50 mL of tofu liquid waste, 50 mL of rice wash water and mixture of three media (v/v/v, 1:1:1) with the addition of golden shell flour as much as 5 g and mineral salt of CaCl2, MgSO4, K2HPO4, KH2PO4. The results showed the production of bacterial spores ranged from 8.90x107 spores/mL to 9.51x107 spores/mL with the highest production in the mixed treatment of the three waste media (coconut water, tofu waste and rice laundry water). In this treatment the level of toxicity was 40% in larvae of armyworm. The weight of leaf feed consumed by armyworm at various treatments was ranged from 36.33 to 46.67 g/10 larvae. The addition of mashed shell flour to growth media of B. thuringiensis did not increase the number of spores.
Co-Authors Abu Umayah Ahmad Sultoni Pulungan Andika Tiara Sukma Ardhansyah Pradana Maulana Latif Arinafril Arsi Arsi Arsi Arsi Arsi Arum Setiawan B. Gunawan Bambang Gunawan Bambang Gunawan Chandra Irsan Dwi Rahayu Putri Sianipar Effendy Effendy Elfita Elfita Erdi Mefiyanto Erise Anggraini Filli Pratama Fitra Gustiar, Fitra Gunawan Ade Putra Sihite hasbi hasbi Hendra Hendra Irmawati Irmawati Kevin Christian Bakkit P Kevin Christian BP Khodijah Khodijah Lailatturahmi Lailatturahmi Lailaturrahmi Lailaturrahmi M Asdhyshani M Rafii F Marieska Verawaty Mimma Gustianingtyas Musliyadi Singarimbun Novi Ariska Nurhayati Nurhayati Nurul Triagtin Putri Gina R Anwar Efendi R Putra Munandar Rahmatul Khaira Rahmatul Khaira Ranti Nur Fadillah Riana, Nanda Rizki Putri Amelia S Imam Nugraha Septian Imam Nugraha Shera Margaretha SITI HERLINDA Suparman Suparman SHK Suparman SHK suparman suparman Suwandi Suwandi Titi Tricahyati Triyansyah Triyansyah Wagiyanti Wagiyanti winda pratiwi YULIA PUJIASTUTI