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Diversity of orchids (Orchidaceae) and host trees at Padang, West Sumatra, Indonesia: A preliminary step towards germplasm conservation Ryan Budi Setiawan; Mellyyana Handayani; Alifma Rahimmi Nanda; Dian Sukma; Alfazlul Rahmi; Agil Syahputra
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i2.56159

Abstract

Orchid exploration brings numerous benefits, including the conservation of rare species, ecological insights, medicinal and horticultural applications, economic opportunities, cultural appreciation, and scientific advancement. These benefits underscore the importance of continued exploration and conservation efforts to safeguard orchid diversity. This study aimed to explore the diversity of orchids at Universitas Andalas, Padang, West Sumatra. The research involved a comprehensive survey of orchid species in various habitats, documenting their distribution and abundance. We used a systematic sampling method to collect plant specimens and record relevant ecological data. The research indicated a remarkable diversity of orchid species at Universitas Andalas. We found 21 species of orchids, including 19 epiphytes and two terrestrial species. Filicium desipiens was the most dominant host, with 13 species of orchids found on 15 trees. Dendrobium crumenatum was the most common orchid found on 13 host trees. The results highlighted the importance of preserving these unique orchid populations. This research contributes to the understanding of orchid diversity at Universitas Andalas. The findings can inform policymakers, conservationists, and local communities in developing effective strategies for the preservation and sustainable use of orchid resources. Future studies should focus on further exploration, taxonomic studies, and conservation initiatives to ensure long-term survival. Keywords: conservation; diversity; epiphytes; exploration; terrestrial
Penggunaan Indole Butirat Acid (IBA) untuk Induksi Akar Setek Amorphophallus titanum dan Amorphophallus gigas Ryan Budi Setiawan; Yusniwati; Mellyyana Handayani; Jumsalia
Jurnal Hortikultura Indonesia (JHI) Vol 14 No 2 (2023): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.14.2.87-92

Abstract

Amorphophallus titanum dan Amorphophallus gigas merupakan flora endemik Sumatera yang terancam punah. Perbanyakan tanaman melalui setek dapat digunakan untuk menunjang kegiatan konservasi. Keberhasilan setek ditentukan oleh konsentrasi zat pengatur tumbuh (ZPT) untuk menginduksi terbentuknya akar, corm dan tunas, sehingga kajian tentang konsentrasi ZPT penting untuk dipelajari. Penelitian ini bertujuan untuk mendapatkan konsentrasi IBA terbaik untuk menginduksi akar dan corm pada A. titanum dan A. gigas. Penelitian telah dilakukan dari bulan Juli-Oktober 2022. Penelitian disusun berdasarkan rancangan acak lengkap dengan perlakuan konsentrasi IBA yang terdiri dari 5 taraf yaitu: 5, 10, 15, 20 dan 25 mg L-1. Setek pada A. titanum menggunakan rachis dan petiole, sedangkan pada A. gigas hanya menggunakan rachis. Hasil penelitian menunjukkan bahwa setek petiole menunjukkan respons yang lebih baik dibandingkan dengan rachis dalam menginduksi terbentuknya akar pada A. titanum. Konsentrasi IBA 15 mg L-1 menghasilkan persentase berakar sebesar 80% pada setek petiole A. titanum dan 20% pada setek rachis A. gigas.Kata Kunci : biodiversitas, endemik, konservasi, punah, zat pengatur tumbuh
Kajian Kesesuaian Lahan, Penyusunan Rekomendasi dan Sosialisasi Budidaya Jeruk Di Nagari Payo Kota Solok Sumatra Barat Setiawan, Ryan Budi; Syarif, Zulfadly
JATIMAS : Jurnal Pertanian dan Pengabdian Masyarakat Vol. 4 No. 2 (2024): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jatimas.v4i2.6172

Abstract

Research findings must be disseminated to the public, either to specific groups or broadly, to create a positive impact on development. The Payo area in Solok City is an agrotourism region with potential for citrus cultivation and citrus-picking tourism. Socialization on land suitability studies and fertilization recommendations is essential to inform farmers. Recommendations for citrus cultivation in Payo serve as guidelines for the future development of citrus farming. This activity aims to deliver cultivation recommendations based on land suitability and fertilization, contributing to sustainable agricultural development. It was conducted in Nagari Payo, Solok City, covering several activities, including land suitability and agro-climate analysis using primary and secondary data, analysis of soil physical and chemical properties for fertilization recommendations, and socialization of citrus cultivation to the community. The analysis revealed that Payo is suitable for citrus planting, with recommended varieties such as Keprok Batu 55, Keprok Brastepu, Keprok Garut, Keprok Tejakula, and Siam Pontianak. However, soil fertility in Payo is generally low, necessitating improvement through liming, the application of ameliorants, and organic and inorganic fertilization. Evaluation of the activity showed that farmers were enthusiastic and understood the information provided. Three months after the activity, all planted seedlings were growing well.  Hasil penelitian harus disebarluaskan kepada masyarakat, baik kepada kelompok tertentu maupun publik, untuk memberi dampak positif pada pembangunan. Daerah Payo di Kota Solok merupakan kawasan agrowisata yang potensial untuk budidaya dan wisata petik jeruk. Sosialisasi mengenai kesesuaian lahan dan rekomendasi pemupukan perlu dilakukan untuk memberikan informasi kepada petani. Rekomendasi budidaya jeruk di Payo menjadi pedoman pengembangan tanaman jeruk di masa depan. Kegiatan ini bertujuan menyampaikan rekomendasi budidaya tanaman jeruk berdasarkan kesesuaian lahan dan pemupukan, dengan harapan dapat berkontribusi pada pembangunan pertanian berkelanjutan. Kegiatan dilaksanakan di Nagari Payo, Kota Solok, meliputi analisis kesesuaian lahan dan agroklimat berdasarkan data primer dan sekunder, analisis sifat fisik dan kimia tanah untuk rekomendasi pemupukan, serta sosialisasi budidaya jeruk kepada masyarakat. Hasil analisis menunjukkan Payo cocok untuk penanaman jeruk, dengan varietas yang direkomendasikan seperti Keprok Batu 55, Keprok Brastepu, Keprok Garut, Keprok Tejakula, dan Siam Pontianak. Namun, kesuburan tanah rendah sehingga memerlukan perbaikan melalui pengapuran, pemberian amelioran, serta pemupukan organik dan anorganik. Evaluasi kegiatan menunjukkan petani antusias dan memahami informasi yang diberikan. Hingga tiga bulan setelah kegiatan, seluruh bibit yang ditanam tumbuh dengan baik.
The Efficacy Of Isopropyl Amine Glyphosate 165 Sl Herbicide Effect On Weed Control Of Coconut Cultivation Doni Hariandi; Ryan Budi Setiawan; Khairur Rizki
Jurnal Riset Perkebunan Vol. 4 No. 2 (2023): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.4.2.95-104.2023

Abstract

Coconut plants are an important commodity for Indonesian people. In the cultivation process, coconut plants need a suitable environment for growth and production. One of the problems in cultivation is weeds. Weeds have a negative impact on cultivated plants, therefore appropriate control measures are needed. So far, the most effective weed control is chemical methods using herbicides. One of the herbicides that can be used is the herbicide with isopropyl amine glyphosate 165 SL. The aim of the experiment was to determine the efficacy of the herbicide isopropyl amine glyphosate 165 SL for controlling weeds in coconut cultivation was conducted from February to June 2022 at Pariaman City, West Sumatra Province. The experimental units were laid out according to a Randomized Block Design with 7 treatments and 3 groups as replications. The treatment was herbicide isopropyl amine glyphosate 165 SL at doses of 3.50 l ha-1, 5.25 l ha-1, 7.00 l ha-1, 8.75 l ha-1, 10.00 l ha-1, manual weeding and control (without weeding). The results of the research show that (1) The herbicide isopropyl amine glyphosate 165 SL can generally control weeds in coconut cultivation up to 12 weeks after application because the weed biomass in the treatment plot is relatively the same as manual weeding and is lighter than the control; (2) Herbicide isopropyl amine glyphosate 165 SL with a dose range of 3.50 l/ha – 10.50 l ha-1 up to 6 weeks after application does not show symptoms of phytotoxicity in coconut plants.
The Effect of Benzyl Amino Purine (BAP) on Indirect Organogenesis of the Titan Arum (Amorphophallus titanum (Becc.)) Putri Salsa Afifah; Yusniwati Yusniwati; Aprizal Zainal; Ryan Budi Setiawan
Agrosains : Jurnal Penelitian Agronomi Vol 26, No 2 (2024): Agrosains: Jurnal Penelitian Agronomi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/agsjpa.v26i2.95804

Abstract

The titan arum (Amorphophallus titanum (Becc.)), an endangered and endemic flora from the island of Sumatra, faces a significant risk of extinction. Conservation efforts for the titan arum were undertaken, including in vitro conservation through tissue culture. The study aimed to determine the optimal concentration of the growth regulator Benzyl Amino Purine (BAP) for inducing shoot formation in titan arum and to observe cellular changes during the shoot stage through histological test. This research was conducted from November 2023 to March 2024 at the Tissue Culture Laboratory, Andalas University. The experiment was arranged in a Completely Randomized Design (CRD) with five treatment levels: 2, 3, 4, 5, and 6 ppm.  Data analysis was performed using an F-test at a 5% significance level. If the F-test showed significant differences, further testing was carried out using Duncan's Multiple Range Test (DMRT) at a 5% significance level. Meanwhile, data on explant rooting percentage and root count were presented as means and standard deviations. Results indicated that various concentrations of BAP could induce shoots formation of Amorphophallus titanum Becc., with the percentage of explants forming shoots reaching 80–95%.  The concentration of 5.0 ppm BAP was the most effective, yielding the highest average number of shoots at 7.80. Histological test revealed cell enlargement at the shoot tips. This research is pivotal for the conservation of titan arum and promotes further studies in in vitro culture techniques.
Penggunaan Indole Butirat Acid untuk Setek Pucuk Kantong Semar (Nepenthes ampullaria Jack.) Hijau Polos: Application of Indole Butirat Acid to Cuttings of Plain Green Pitcher Plant (Nepenthes ampullaria Jack.) Ryan Budi Setiawan; Mellyyana Handayani; Jumsalia
Jurnal Hortikultura Indonesia (JHI) Vol 15 No 3 (2024): Jurnal Hortikultura Indonesia (JHI)
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.15.3.155-162

Abstract

Kantong semar (Nepenthes ampullaria Jack.) merupakan spesies endemik yang tersebar di Sumatera dan Kalimantan. Spesies ini berstatus least concern karena minimnya data penelitian terbaru mengenai kelimpahan dan penyebarannya. Eksploitasi untuk perdagangan dan deforestasi menyebabkan penurunan populasi. Selain itu, waktu yang lama untuk mencapai fase generatif dan tipe pembungaan dioecious juga berkontribusi terhadap penurunan populasi Nepenthes sp. Program konservasi baik in situ maupun ex situ sangat penting untuk menjaga kelestarian N. ampullaria. Perbanyakan tanaman melalui setek dapat mendukung kegiatan konservasi. Keberhasilan setek ditentukan oleh konsentrasi zat pengatur tumbuh (ZPT) untuk menginduksi pembentukan akar dan tunas, sehingga kajian tentang konsentrasi ZPT penting untuk dipelajari. Penelitian ini bertujuan untuk menentukan konsentrasi IBA terbaik untuk menginduksi akar dan tunas pada N. ampullaria. Penelitian disusun berdasarkan rancangan acak lengkap dengan perlakuan konsentrasi IBA yang terdiri dari 5 taraf yaitu: 0, 5, 10, 15, dan 20 mg L-1. Hasil penelitian menunjukkan bahwa konsentrasi IBA tidak berpengaruh nyata terhadap pertumbuhan stek pucuk N. ampularia dengan persentase hidup setek berkisar 70-100 %, pertambahan tinggi tunas berkisar 5.01-9.53 cm, jumlah akar primer berkisar 5.89-9.56 helai dan jumlah akar primer berkisar 3.52-6.29 cm. Semua perlakuan mampu meransang terbentuknya akar dan tunas yang mengindikasikan bahwa kandungan fitohormon endogen telah mencukupi untuk pertumbuhan setek pucuk pada N. ampullaria. Kata kunci: biodiversitas, endemik, konservasi, punah, zat pengatur tumbuh
IBA-induced rooting in Nepenthes reinwardtiana Miq. cuttings for germplasm conservation Ryan Budi Setiawan
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 53 No. 1 (2025): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v53i1.60254

Abstract

Nepenthes reinwardtiana Miq. is an endemic species distributed in Sumatra and Kalimantan and classified as least concern due to the lack of recent research data on its abundance and distribution. Excessive exploitation, deforestation, the long time required to reach the generative phase, and the dioecious flowering type have caused a population decline. Plant propagation through cuttings can support conservation activities. The success of cuttings is determined by the concentration of plant growth regulators (PGR), making studies on PGR concentration important. This research aimed to determine the best indole-3-butyric acid (IBA) concentration for inducing roots and shoots in N. reinwardtiana. The study was conducted from February to October 2023. The research was arranged based on a completely randomized design with IBA concentration treatments consisting of 5 levels: 0, 5, 10, 15, and 20 mg L-1. The results showed that there was no significant effect of IBA on all variables. However, 5 mg L-1 IBA gave the best responses on shoot height increase (10.9 cm), leaf number increase (5.0 leaves), and root length (8.7 cm). These findings suggest that the growth of N. reinwardtiana cuttings may rely heavily on endogenous auxin levels, reducing the observable effects of exogenous IBA application. The non-significant results highlight the potential of this species to thrive without external auxin under certain conditions, which could simplify propagation protocols. Keywords: biodiversity; conservation; endemic species; extinct; plant growth regulator
Antioxidant activity (2-2-diphenil-1-picrilhydrazil radical-scavenging assay) and phytochemicals of Mimosa invisa Colla and Mimosa pigra L. grown at different terrestrial habitats. Chaniago, Irawati; Setiawan, Ryan Budi; Ardi, Ardi; Hariandi, Doni; Sari, Winda Purnama
Kultivasi Vol 24, No 1 (2025): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v24i1.62359

Abstract

Giant false sensitive plants (Mimosa invisa Colla) and giant sensitive plants (Mimosa pigra L.) are invasive plant species in the tropics and native to America. They are widely distributed in different ecosystems and soil types. Apart from being considered woody shrub weeds, these plant species can be used as herbal medicine for their antioxidant activities. An experiment to study the antioxidant activities and phytochemicals of M. invisa and M. pigra grown at 200 m from the coastline and close to the riverbank (riparian abandoned land) was carried out from March to November 2023. Weed leaves were collected as purposive randomized sampling from different terrestrial habitats in the City of Padang, West Sumatra. Antioxidant activity was identified according to a 2-2-diphenyl-1-picrilhydrazil (DPPH) radical-scavenging assay, and phytochemical compounds were identified qualitatively. Results demonstrate that M. invisa had mild antioxidant activity and M. pigra had strong antioxidant activity. The IC50 values for M. invisa grown at 200 m from the coastline and at the riverbank were 121.3 ± 11.5 and 105.6 ± 2.90 ppm, respectively. The IC50 values of M. pigra grown at 200 m from the coastline and at the riverbank were 80.6 ± 15.9 and 85.1 ± 9.03 ppm, respectively. Phenolic, saponin, and steroid were detected in all weeds grown at different habitats. However, alkaloids and terpenoids were not detected. Interestingly, flavonoid was not detected in the leaves of M. pigra grown at the riverbank.
Exploration, Analysis of Zinc (Zn) And Iron (Fe) Content in Local Rice Genotypes from West Sumatra: An Initial Step toward Biofortification for Stunting Mitigation Gustian, G; Hayati, PK Dewi; Setiawan, Ryan Budi; Imelinda, I; Ranayudha, Adhira Prameswari
Andalasian International Journal of Agriculture and Natural Sciences (AIJANS) Vol. 5 No. 2 (2024)
Publisher : Lembaga Penelitian dan Pengabdian, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijans.v5.i2.83-90.2024

Abstract

Stunting in children under five remains a significant public health issue in Indonesia, particularly in West Sumatra, where prevalence rates exceed the national average. Addressing this challenge requires improving nutritional intake, focusing on essential micronutrients like zinc (Zn) and iron (Fe). Biofortification is a promising agricultural strategy to enhance the nutritional quality of staple crops such as rice. This study aims to explore and evaluate the Zn and Fe content of local rice genotypes from West Sumatra, which hold potential for biofortification programs.Twenty-eight rice genotypes, including 27 local genotypes and one control (Inpari Nutri Zinc), were analyzed for Zn and Fe content. The results showed that the control variety, Inpari Nutri Zinc, exhibited the highest Zn (31.30 ppm) and Fe (19.85 ppm) content. Among the local genotypes, Puluik Mutia (Zn: 28.40 ppm, Fe: 18.30 ppm), Kuning Aro (Zn: 27.60 ppm, Fe: 18.20 ppm), and Rampai Kuning (Zn: 26.20 ppm, Fe: 18.05 ppm) displayed the highest Zn levels, while Manggung (Fe: 18.85 ppm) had the highest Fe content. These findings highlight the significant variability in micronutrient content among local genotypes, emphasizing their potential as germplasm for biofortification breeding programs.This research represents the first systematic exploration of Zn and Fe levels in local rice genotypes from West Sumatra. The novelty lies in identifying high-Zn and Fe genotypes, particularly those with firm texture preferences, which could support biofortification efforts and provide a sustainable solution to combat stunting. Future research should focus on environmental interactions and agronomic practices to further optimize the micronutrient content in local rice varieties
Conservation Comprehensive Approach: Study on Exploration, Habitat Analysis, Propagation, and Reintroduction of the Indonesian Endemic Endangered Titan Arum (Amorphophallus titanum Becc.) Setiawan, Ryan Budi; Yusniwati, Yusniwati; Rahma Wati, Dela; Purnama Sari, Indah; Rahmah, Siti; Haryanti, Sindi; Arief Laksana Bosma, Pandu
Jurnal Manajemen Hutan Tropika Vol. 31 No. 3 (2025)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.31.3.261

Abstract

Titan arum (Amorphophallus titanum Becc.) is an endemic species of Indonesia that is found naturally only in Sumatra and is classified as endangered, with an estimated 303 mature individuals remaining in their natural habitat. The population is decreasing due to deforestation, tuber exploitation, long flowering times, and protandry. Therefore, both in-situ and ex-situ conservation programs are necessary to preserve this species. The research aims to explore natural populations, analyze habitat conditions, develop propagation methods, and conduct reintroduction efforts to support the conservation of A. titanum. This study was conducted from 2023 to 2024 in Palupuah, Agam Regency, the Agriculture Faculty of Universitas Andalas, and several locations for the reintroduction of A. titanum. The research found that A. titanum habitat consists of forests rich in humus and litter, as well as banana cultivation areas. During the exploration, 7 individuals were identified: one in dormancy, one fruiting, and 5 in the vegetative phase. Seed germination experiments categorized seeds into seven classes based on their weight. The most dominant seed class weighed between 2.9 g and 3.2 g, comprising 38 seeds or 26.9% of the total. The germination rate and seedling growth were high, as all seeds exhibited 100% and produced seedlings of relatively uniform size. Propagation was carried out using in vitro culture techniques with petiole explants. The results showed that 2 mg L-1 benzyl aminopurine (BAP) successfully induced callus formation with a 100% induction rate, while a concentration of 1.5 mg L-1 achieved the highest shoot induction rate at 58.3%, with an average of 1.3 shoots and 7.9 roots per explant. The propagated seedlings were subsequently replanted in several locations for reintroduction activities.