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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology JURNAL ILMU PERTANIAN Seminar Nasional Lahan Suboptimal Akta Agrosia
Usman Siswanto
Fakultas Pertanian Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary Other

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Pengaruh Pemberian Pupuk Organik Cair Darah Sapi terhadap Hasil Tanaman Ubi Kayu Varietas Ketan Novianto, Esna Dilli; Oktasari, Wike; Syarifuddin, Syarifuddin; Siswanto, Usman; Anindyawati, Nurul
AGRIUM: Jurnal Ilmu Pertanian Vol 27, No 2 (2024)
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/agrium.v27i2.16816

Abstract

Pemupukan merupakan salah satu aktivitas penting dalam budidaya ubi kayu. Ironisnya aplikasi pupuk anorganik yang berlebihan ternyata berdampak negatif pada pertumbuhan tanaman. Pupuk Organik Cair (POC) dapat menjadi salah satu solusi untuk menggantikan pupuk anorganik. Namun, penggunaannya pada tanaman ubi kayu belum pernah dilaporkan. Penelitian ini bertujuan untuk mendapatkan dosis dan interval waktu pemberian POC yang tepat untuk meningkatkan hasil tanaman ubi kayu varietas ketan (Manihot esculenta Crantz.). Penelitian ini menggunakan rancangan acak kelompok lengkap dengan 2 faktor dan 3 ulangan sebagai blok. Faktor pertama adalah dosis POC darah sapi (0, 10, 20, dan 30 ml/tanaman), sedangkan faktor kedua adalah interval waktu pemberian POC darah sapi (3 minggu sekali, 6 minggu sekali, dan 9 minggu sekali). Data pengamatan diuji signifikansinya menggunakan analisis sidik ragam. Hasil penelitian menunjukkan bahwa semua perlakuan tidak memberikan pengaruh signifikan terhadap seluruh parameter pengamatan. Hal tersebut dikarenakan kandungan unsur hara POC darah sapi yang belum mencukupi kebutuhan tanaman, sifat POC yang mudah tercuci dan menguap, penyiraman yang tidak optimal, volume pengaplikasian yang terlalu sedikit, dan rentang waktu pemberian yang terlalu lama sehingga menyebabkan terganggunya perkembangan umbi. Dapat disimpulkan bahwa pemberian POC darah sapi pada penelitian ini belum mampu meningkatkan hasil tanaman ubi kayu.
ANTIMALARIAL MEDICINAL PLANTS USED BY TRADITIONAL HEALERS IN BENGKULU PROVINCE OF INDONESIA Susanti, Dian; Putra, Aditya Dwi Permana; Safrina, Devi; Wijaya, Nur Rahmawati; Adi, M Bakti Samsu; Mujahid, Rohmat; Rukmana, Rizal Maarif; Subositi, Dyah; Haryanti, Sari; Siswanto, Usman; Widiyastuti, Yuli
BIOTROPIA Vol. 31 No. 3 (2024): BIOTROPIA Vol. 31 No. 3 December 2024
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2024.31.3.2318

Abstract

Article Highlights- This research provides information on the use of medicinal plants for treating malaria among ethnic groups in Bengkulu Province.- This research was part of RISTOJA (Research on Medicinal Plants), national research conducted by the Ministry of Health of the Republic of Indonesia.- Several compounds found in medicinal plants used by traditional healers in the Bengkulu Province have been scientifically proven to be effective as antimalarial medication.AbstractMalaria is a disease with a high mortality rate and is still a significant problem in Indonesia and globally. One of the provinces in Indonesia that uses a diversity of medicinal plants to treat malaria is Bengkulu Province. This research aims to inventory and evaluate the use of medicinal plants as malaria drugs in Bengkulu Province. The research methods used were observation, interviews, and the collection of samples. Respondents were traditional healers from seven ethnic groups in Bengkulu. Plant species, use value (UV) parameters, fidelity level (FL), family use value (FUV), relative frequency of citation (RFC), and plant parts value (PPV) were analyzed. This study found 32 specific herbal concoctions and identified the use of 47 plant species in 28 families used by 20 healers in 6 ethnic groups of Bengkulu. The species Carica papaya, Peronema canescens, and Tinospora crispa have the highest use value, fidelity level, and relative frequency of citation. The Lamiaceae and Caricaceae families have the highest family use value (0.15). The leaves (43.9%) and barks (13.6%) were the most frequently utilized parts of medicinal plants to overcome malaria. Decoction was the method most widely used by traditional healers in Bengkulu to prepare conventional medicine formula.
Analisis dan Korelasi Genetik Pertambahan Sifat Agronomi Dengan Sifat Fisiologi Kopi Arabika Sumatera Budidaya Kawasan Pesisir Alnopri, Alnopri; Siswanto, Usman; Nurjannah, Uswatun; Panjaitan, Amisah Patel
Seminar Nasional Lahan Suboptimal Vol 12, No 1 (2024): Vol 12, No 1 (2024): Prosiding Seminar Nasional Lahan Suboptimal ke-12 “Revital
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Abstract

Alnopri, A., Nurjanah, S. U., Panjaitan, A. P. (2024). Genetic analysis and correlation of agronomic traits with physiological traits of sumatra arabica coffee cultivated in coastal Areas. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-12 Tahun 2024, Palembangg 21 Oktober 2024. (pp.591–599). Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).The coastal area is a transitional, namely the land is still influenced by marine activities, such as tides, sea breezes and saltwater seepage. Arabica coffee on Sumatra Island is cultivated in the highlands, namely in the Bukit Barisan Area. The Acc Research Land (Alnopri Coffee Centre) is located in a coastal area with an altitude of 10 meters above sea level. Acc land have a experimental garden arranged with a Randomized Block Design, by planting 9 genotype of Arabica Coffee from Sumatra Island and repeated 3 times. The long-term goal is to obtain information on adaptive genotype of cultivation in coastal areas. This experiment was conducted to determine growth patterns, analysis and genetic correlation of increase in agronomic and physiological traits. The study was carried out in the immature plant phase for two years, namely the 2023 dry season and the 2024 rainy season. The analysis carried out was by analysis of variance  and analysis of covariance. The results of the study showed that the growth pattern was normal and had increased from the previous year, the increase in the number of leaves and chlorophyll content differed between genotypes, and the genetic correlation between the increase in agronomic traits and physiological traits with a very weak to strong relationship. The conclusion of this study is 1). The growth pattern of agronomic traits (plant height and canopy area) of cultivated Arabica coffee in coastal areas is normal, 2). The increase in traits the number of internodes, the area of a pair of leaves, and chlorophyll content shows that the Mandailing and Sigararutang genotype are the best, and 3). The genetic correlation of the increase in agronomic traits and physiological traits that are strong correlation are the variables of canopy area and leaf pair area.
Bio-fortified Compost as A Substitute for Chemical N Fertilizer for Growth, N Accumulation, and Yield of Sweet Corn Marwanto, Marwanto; Wati, Shinta Puspita; Romeida, Atra; Handajaningsih, Merakati; Adiprasetyo, Teguh; Hidayat, Hidayat; Purnomo, Bambang; Murcitro, Bambang Gonggo; Siswanto, Usman
Akta Agrosia Vol 22 No 2 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

ABSTRACTFinding the appropriate method of fertilizer application to simultaneously enhance farm productivity and ensure ecosystem sustainability has been receiving a lot of attention. A field experiment was carried in the Research Plot Agriculture Faculty Bengkulu University Campus Indonesia in 2017. The purpose of this study was (1) to assess the significant effects of inorganic N fertilizer (IF) substitution with bio-fortified compost (BC) under equal N conditions on growth, N accumulation, and yield of sweet corn, and (2) to determine the appropriate level to which inorganic N fertilizer could be reduced and equivalently replaced by bio-fortified compost to promote sweet corn growth and yield. The treatments consisted of six different proportions of inorganic N fertilizer (IF) substitution with bio-fortified compost (BC). Each treatment was designed on the basis of equal amount of total N input from a combination of both fertilizers (138 kg N ha-1).  They were arranged in a randomized block design with 3 replications. They included (1) 100% IF plus 0% BC, (2) 75% IF plus 25% BC, (3) 50% IF plus 50% BC, (4) 25% IF plus 75%, (5) 0% IF plus 100% BC, and (6) no IF and no BC. The results showed that the increasing proportion of IF replaced by BC resulted in an increase for all variables (except for plant height) but they decreased when 100% IF substitution with 100% BC was applied. Among the partial substitution treatments, 50% IF plus 50% BC consistently produced the best growth, N accumulation, and yield increase. Treatments of 50% IF plus 50% BC and 25% IF plus 75% BC produced the highest green cob weight with husk per plot (10.74 – 10.84 kg plot-1), which was 16% to 19% higher than treatment of 100% IF plus % BC. The three partial substitution treatments produced crop yield components as good as treatment of 100% IF plus 0% BC. Treatment of 0% IF plus 100% BC reduced plant growth, N accumulation, and crop yield and its components. The appropriate level to which IF could be reduced and equivalently replaced by BC was at the range of 25% to 75%. Hence, a suitable replacement of inorganic N fertilizer with bio-fortified compost is considered a reasoned way to simultaneously increase crop yield and reduce environmental degradation.Keywords: organic fertilizer, chemical fertilizer, bio-fortification, chemical fertilizer substitution, bio-fortified compost
Co-Authors Adi, M Bakti Samsu Alnopri Alnopri, Alnopri Anindyawati, Nurul Atra Romeida Bambang Gonggo Murcitro Bambang Purnomo Dian Susanti Dyah Subositi Hidayat Hidayat Marwanto Marwanto, Marwanto Merakati Handajaningsih Novianto, Esna Dilli Nurjannah, Uswatun Oktasari, Wike Panjaitan, Amisah Patel Putra, Aditya Dwi Permana Rizal Maarif Rukmana, Rizal Maarif Rohmat Mujahid, Rohmat Safrina, Devi Sari Haryanti Syarifuddin Syarifuddin Teguh Adiprasetyo Wati, Shinta Puspita Wijaya, Nur Rahmawati Yuli Widiyastuti