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All Journal Bernas Jurnal Agrium Tropical Plantation Journal
Amar Ma’ruf
Universitas Asahan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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AGROSILVOPASTURA SEBAGAI SISTEM PERTANIAN TERENCANA MENUJU PERTANIAN BERKELANJUTAN Amar Ma'ruf
Bernas : Jurnal Penelitian Pertanian Vol 13, No 1 (2017): Bernas Februari 2017
Publisher : Bernas : Jurnal Penelitian Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (239.74 KB)

Abstract

Agroforestri juga sebagai model pertanian berkelanjutan. Sistem agroforestri terbentuk atas tiga komponen pokok yaitu perhutanan, pertanian, peternakan. Sistem agrosilvopastura adalah pengombinasian komponen berkayu (kehutanan) dengan pertanian (semusim) dan sekaligus peternakan/binatang pada unit manajemen lahan yang sama.Urutan prioritas alternatif pilihan terpenting untuk pertanian berkelanjutan antara lain penguatan kelembagaan petani, mengembangkan pengkaderan petani/kelompok tani sadar pertanian berkelanjutan, dan peningkatan kegiatan demplot teknologi pertanian berkelanjutan. Analisis finansial menunjukkan bahwa secara ekonomi semua sistem agroforestri, dan agrosilvopastura yang paling banyak memberikan input dibanding agrosilnikultur dan silvopastura. Erosi yang terjadi pada lahanagroforestri, terutama agrosilvokultura di kawasan penyangga Kabuaten Langkat tidak membahayakan karena lebih kecil dari erosi yang diperbolehkan (<31,6 ton/ha/thn). Total biomassa dan karbon tegakan pada sistem agroforestri dengan tipeagrosilvopastura masingmasing sebesar 104.17 dan 46.74 ton per hektar hampir sama dengan total biomassa dan karbon total tegakan pada hutan mangrove Rhizophora apiculata dengan kerapatan 463 pohon per hektar yang masing-masing sebesar 169.46 (biomassa) dan 47.08 (karbon) ton per hektar. Sistem agrosilvopastura dapat berperan dalam memitigasi banjir dibandingkan pada sistem pertanian monokultur untuk setiap hektar lahan pada setiap 1 jam kejadian hujan.
PENGARUH PEMANASAN GLOBAL TERHADAP BEBERAPA TANAMAN C3 DI INDONESIA Amar Ma&#039;ruf; Apresus Sinaga
Bernas : Jurnal Penelitian Pertanian Vol 12, No 2 (2016): Bernas Juli 2016
Publisher : Bernas : Jurnal Penelitian Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (191.248 KB)

Abstract

Ancaman dan krisis pangan dunia yang menggejala secara global sejak awal 2008 memiliki kaitan sangat erat dengan perubahan iklim global. Penurunan produksi pangan di berbagai negara disebabkan oleh berbagai perubahan iklim antara lain peningkatan kadar gas rumah kaca (GRK), perubahan pola curah hujan dan kejadian iklim ekstrim, peningkatan suhu udara, kenaikan muka air laut dan rob. Berdasar tipe fotosintesis, tanaman dibedakan menjadi C3, C4,dan CAM.Pada makalah ini diperlihatkan pengaruh pemanasan global terhadap beberapa spesies tanaman C3, baik diukur dari produktvitas tanaman, kandungan klorofil akibat suhu tinggi, serta evapotranspirasi. Tanaman yang dibahas adalah Phaseolus radiatus, Glicine max L., Capsicum frutescens L., dan Solanum tuberosum. Pada tanaman kacang hijau, volume curah hujan bulan Mei sangat mempengaruhi produktivitas kacang hijau yang ditanam pada musim tanam ke dua (MT) di lahan kering di Kabupaten Pati.Besarnya nilai evapotranspirasi kedelai dipengaruhi oleh curah hujan.jika jumlah curah hujan tinggi maka evapotrasnpirasi juga tinggi. Laju evepotranspirasi tanaman kedelai di Malang dari tahun 1997 – 2011 terus meningkat. 1997 – 2001 rata-rata laju evapotranspirasi kedelai 3.21 mm hari -1, 2002 – 2006rata-ratalaju evapotranspirasi kedelai 3.29 mm hari -1, 2007 – 2011 laju evapotranspirasi kedelai 3.35 mm hari -1.Dampak perubahan iklim menyebabkan terjadinya.
Food Legume Production Performance in Support of World Food Amar Ma&#039;ruf; Muhammad Fahmi Sidiq; Ni Luh Suriani; Popiha Bordoloi
Tropical Plantation Journal Vol 1, No 2 (2022): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (815.408 KB) | DOI: 10.56125/tpj.v1i2.8

Abstract

Over the past 50 years (1970-2020) the world's population has risen by an average of 1.49% per year so that in 2020 it reached 7.79 billion people. This increase automatically increases food needs. While to this day there are still over 820 million undernourished people. Food legumes have enormous potential in supporting food security because they are rich in nutrients, including high energy, protein, carbohydrate, fiber, and other nutrients. Even among them, like chickpeas have higher energy content than some major cereal crops. Food legumes production continues to increase from year to year. Compared to three decades ago, soybean annual production more than tripled with production in 2017 reaching 352.2 million tons, as well as pulses that increased more than 35 million tons with production in 2017 reaching 96 million tons. These improvements are not only supported by field expansion, but also the impact of technological improvements which have effect on increasing yield. This review describes the trends in increasing production and yield of food legumes, as well as the progress of breeding technologies in order to increase diversities have impact on increasing the yields and adaptation against the environment. These explanations are discussed in each food legume species
A Comprehensive Process Of Nitrogen Fixation In Plants Amar Ma’ruf; Syahminar Syahminar; Cik Zulia
Agrium Vol 20, No 4 (2023)
Publisher : Faculty of Agriculture, Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/agrium.v20i4.13994

Abstract

Nitrogen is a component of several biomolecules that are essential for all organisms' growth and development. Nitrogen fixation is the biological process that converts molecular nitrogen to ammonia. Biological nitrogen fixation is mediated by diazotroph microorganisms that use nitrogenase enzymes to enhance atmospheric nitrogen. Much of this is accomplished through a symbiotic interaction between plants and diazotrophic bacteria. Microbiology and plant biology are discussed in symbiotic nitrogen fixation discussions. Some of the nitrogen fixation mechanisms mentioned in this paper begin with the formation of nodules, the action of the nitrogenase enzyme in reducing nitrogen to ammonia, and the presence of rhizobia in nodules. This study provides a comprehensive overview of the nodule formation process, the role of the nitrogenase enzyme in reducing nitrogen to ammonia, and the presence of rhizobia in nodules. A more complete literature review on biological nitrogen fixing in plants is required to obtain more specific information.
Nodulation and Morphological Response of Pueraria Javanica Bent. to Sunlight Intensity Dina Puspita Sari; Amar Ma&#039;ruf
Tropical Plantation Journal Vol 5, No 1 (2026): TROPICAL PLANTATION JOURNAL
Publisher : Akademi Komunitas Perkebunan Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56125/tpj.v5i1.92

Abstract

Pueraria javanica Bent. is a tropical leguminous ground cover crop commonly planted in oil palm plantations to reduce soil erosion, fix nitrogen, and suppress weed growth. This plant is known to be resistant to fluctuations in low and high light intensity. Pueraria javanica has the ability to induce nodule formation by growing root hairs on the main branched root through a symbiosis with the bacterium Bradyrhizobium japonicum, stimulating the root surface to encourage nodule entry. In addition, legumes have the ability to bind with soil rhizobial bacteria, which fix atmospheric N2. This is a form of N that is not available to plants, but can fix N2 from the soil. The aim of this study was to analyze the effect of variations in sunlight intensity on nodule formation in Pueraria javanica and to determine the effect of sunlight intensity on vegetative growth and morphological development of Pueraria javanica. This research was conducted at the Experimental Garden of Asahan University campus, Asahan Regency, North Sumatra Province, with an altitude of ± 25 meters above sea level from January to March 2025. The research was conducted using a randomized block design method consisting of paranet and IAA auxin treatments. The use of paranet was divided into four levels, namely control without paranet, paranet with transparency of 50%, 75%, and 95%. Meanwhile, the application of IAA auxin consisted of three concentration levels, namely 100 ppm, 200 ppm, and 300 ppm. The observed variables were: plant height, number of leaves, number of leaflets, leaf area, fresh weight of plants, root length, number of root nodules, fresh weight of roots, dry weight of roots. The analysis of significant differences was made using the Tukey's HSD method. All data analysis used the SPSS application version 16.0 (SPSS, Chicago, United States). The results of the study showed that the treatment of various percentages of paranet on Pueraria javanica showed a significant effect on all observation parameters with the best growth in the control treatment. The application of auxin on Pueraria javanica showed a significant difference in the number of leaves, number of leaflets, leaf area, fresh weight of plants, root length, number of root nodules, fresh weight of roots, dry weight of roots. With the best growth in the control treatment. The two treatments above between the treatment of paranet percentage and the administration of auxin showed an interaction that had a significant effect on several parameters observed, including the number of root nodules, fresh weight of roots and dry weight of roots
Co-Authors Apresus Sinaga Cik Zulia Dina Puspita Sari Muhammad Fahmi Sidiq Ni Luh Suriani Popiha Bordoloi Syahminar Syahminar