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All Journal Jurnal Lahan Suboptimal Jurnal Agroekoteknologi Jurnal Pertanian Agros AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian PUBLIKASI PENELITIAN TERAPAN DAN KEBIJAKAN SRIWIJAYA JOURNAL OF ENVIRONMENT
M. Umar Harun
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Energy Environmental Science Public Health Social Sciences

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Pengaruh Kombinasi Pupuk Organik dan Hayati Terhadap Pertumbuhan dan Produksi Galur Jagung (Zea mays. L) Hasil Seleksi Efisien hara Pada Lahan Kering Marginal Yopie Moelyohadi; M. Umar Harun; Munandar Munandar; Renih Hayati; Nuni Gofar
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 2 No. 2 (2013)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (453.735 KB) | DOI: 10.33230/JLSO.2.2.2013.50

Abstract

This study aimed to study the growth and yield of maize crop nutrient  efficient  selection against  the  combination of different types of organic fertilizers and bio-fertilizers at low dose levels of chemical fertilizer on marginal dry land for the development of technological innovation fertilization on maize crops to reduce the use of chemical fertilizer on marginal dry land. This study was conducted in the field trials of Agro Techno Park (ATP), the Ministry of Research and Technology, South Sumatra from  January  to May  2012.   The experimental design used was SplitPlotdesign with three replications.   . The main plot treatment was dose levels of chemical fertilizer consists of : P1 = 50 % standard dose of ATP ( 200 kg urea , 50 kg SP36 and 25 kg KCl/ha ) and P2 = 25 % standard dose of ATP ( 100 kg urea , 25 kg SP36 KCl and 1.25 kg/ha) . treatment subplot , is the combined delivery of this type of organic fertilizer + biofertilizer types , comprising : KHO = control ( without organic fertilizer + biofertilizer ) , KH1 = composted cow manure + mycorrhiza , KH2 = composted cow manure + bacterial phosphate solvent , KH3 = composted chicken manure + biological mycorrhizae , KH4 = composted chicken manure + bacterial phosphate solvent , KH5 = compost straw corn + mycorrhizae , KH6= composted maize straw + bacteria phosphate solvent , KH7 = compost Legume cover crop ( LCC ) + Mycorrhiza and compost KH 8= legume cover crop (LCC) + solvent bacteria Phosphate.  The results showed that chicken manure compost fertilizer + fertilizer mycorrhizal give the best effect on the growth and yield of dryland corn yields marginal with an average of 9.70 tons of dry cobs/ha and the combined treatment of chemical fertilizer at 50 % level and composting chicken manure + mycorrhizal give the best effect on the growth and yield of maize in marginal dry land , with an average yield reached 10.51 tons of dry seed/acre.
HUBUNGAN LUAS DAUN TERHADAP PERTAMBAHAN BERAT KERING RUMPUT GAJAH DI BERBAGAI PERLAKUAN DI MEDIA TAILING TIMAH Nyayu Siti Khodijah; Rujito Agus Suwignyo; M. Umar Harun
Jurnal Agroekoteknologi Vol 10, No 1 (2018)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/j.agrtek.v10i1.5463

Abstract

Elephant grass (Pannisetum purpureum) can grow in various types of land conditions and produces and is resistant to environmental stress. The predominant sand tin tailing conditions and poor nutrients cause limited plant growth above them. This research tested some kind of fertilizer treatment on sand tailing media after tin addition by using elephant grass plants. The results showed that the type of fertilizer had significant effect on the specific leaf area variant, the ratio of leaf area and the leaf weight ratio. Overall growth were greatly depressed on the 100% tailings treatment. Lime applied in conjunction with NPK fertilizer was not show the total leaf weight that was different from the addition of NPK alone. NPK fertilizers better influence the growth of elephant leaves in tin tailings than organic fertilizers. The best treatment was obtained on organic fertilization with NPK inorganic fertilization. The association of total dry weight of elephant grass with specific area of elephant grass leaf was only visible in organic fertilization treatment together with NPK inorganic fertilizer. In the best condition of elephant grass growth, the specific leaf area had a significant role to increase the total weight of the plant with the value of r2 = 0.864 or LDS will affect the total dry weight of elephant grass in the tailings medium with the addition of organic and inorganic materials NPK of 86.4 percent the remaining 13.6% increase in total dry weight was influenced by factors other than specific leaf area.
A Comparative Assessment of Vegetation Diversity Under Coffee Plantations Inside and Outside Protected Forest Areas Ifran Imanda; Sabaruddin Kadir; M. Umar Harun; Wijaya Mardiansyah
Sriwijaya Journal of Environment Vol 7, No 2 (2022): ENVIRONMENTAL CARE AND PROTECTION
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22135/sje.2022.7.2.73-79

Abstract

The existence of tree vegetation planted in coffee plantations as shade trees is believed to have a positive influence on the growth and production of coffee plants. This study aims to analyze the diversity of coffee plant vegetation in three age classes planted inside and outside protected forest areas included in the administrative area of North Dempo and Central Dempo Districts, Pagar Alam City, South Sumatra Province. The results of observations and calculations of Value IVI found that Albizia sumatrana was the dominant species in all coffee plantations at various age levels. The IVI values of Albazia Sumatrana in coffee plants aged < 5 years were 157.32 (inside PF) and 720.92 (outside PF), in coffee plants aged < 10 years, were 84.30 (inside PF) and 155.51 (outside PF), while in coffee aged > 10 years is 75.46 (inside PF) and 95.92 (outside PF). Assessment using the Shanon Index and Simpon Index showed the same results; coffee plantations at all age levels had a moderate diversity index, except for vegetation in coffee plantations aged < 5 years which were outside protected forest areas and had low diversity index values. Through the availability of this information, it is hoped that it will be used as initial information for selecting vegetation types that will be used to support restoration activities in areas around protected forests.
Morfologi, Hasil, dan Korelasi Organ Vegetatif dan Generatif Tanaman Kedelai Varietas Wilis di Tanah Masam pada Musim Hujan: Morfologi, Hasil, dan Korelasi Organ Vegetatif dan Generatif Tanaman Kedelai Varietas Wilis di Tanah Masam pada Musim Hujan M. Umar Harun; Chandra Irsan; Haris Kriswantoro
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 6 No 2 (2022): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (320.062 KB) | DOI: 10.33019/agrosainstek.v6i2.393

Abstract

Soybean poorly performed if planted during dry season. Planting during the rainy season can overcome problem of limited water availability.  This study examines the response of soybean to rainy season in acid dry land.  Research was then conducted at Timbangan village, Ogan Ilir, South Sumatra from October 2020 through January 2021.  Soybean seeds of Wilis variety as planting material were already one month old.  The research was carried out without applying experimental design.   Five plots were prepared with each  size 4 m x 2.5 m, and planted in 6 rows.  Soil was prepared by thoroughly mixing with dolomite (2 tons ha-1), chicken manure 10 tons ha-1, and Urea (50 kg ha-1), SP 36 (100 kg ha-1), and KCl (50 kg ha-1). Sampling of plants by purposive sampling. The variables measured were plant height, number of leaves, number of branches, number of filled pods, weight of seeds per plant, dry weight of pods, stems, leaves, and roots.  Finding of the research, plant height (68.5±5.45 cm) and weight of 100 seeds per plant (13.19±3.27 g) was above description.   Correlation-regression test showed that root dry weight had a significantly positive correlation to stems and branch numbers, leaf dry weight and pod dry weight.
PERTUMBUHAN BERBAGAI KLON BIBIT KARET (Hevea brasiliensis Muell.Arg.) PADA MEDIA TANAM CAMPURAN TANAH DAN KOMPOS AMPAS TAHU Yudo Winarso; M. Umar Harun; Erizal Sodikin
Agros Journal of Agriculture Science Vol 25, No 1 (2023): edisi JANUARI
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v25i1.2519

Abstract

Limbah padat ampas tahu belum banyak dimanfaatkan dan ada prospek diolah sebagai pupuk organik. Pupuk organik limbah ampas tahu dapat dicampur sebagai media tanam. Untuk mendapatkan media yang tepat dan sesuai kebutuhan tanaman, perlu dilakukan pencampuran kompos limbah ampas tahu. Penelitian ini bertujuan mengetahui respon pertumbuhan stum mata tidur berbagai klon karet (Hevea brasiliensis Muell Arg.), mendapatkan komposisi kompos limbah ampas tahu yang baik Penelitian ini dilaksanakan di kebun pembibitan masyarakat Desa Pangkul Kecamatan Cambai Kota Prabumulih., mulai bulan April 2022 sampai Juni 2022, dengan ketinggian tempat kurang lebih 32 m dpl. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) 2 faktorial. Faktorial pertama klon karet yang terdiri dari 3 taraf perlakuan dan faktorial kedua komposisi kompos limbah ampas tahu yang terdiri dari 6 taraf perlakuan. Hasil penelitian menunjukkan bahwa penggunaan kompos limbah ampas tahu terhadap pertumbuhan stum mata tidur/bibit karet berbagai klon tanaman karet (Hevea brasiliensis Muell Arg.) tidak berpengaruh nyata terhadap waktu muncul tunas setelah dan diameter tanaman.Sedangkan pada tinggi tanaman, jumlah dan luas daun berepengaruh sangat nyata tetapi pada pajang akar hanya berpengaruh nyata. Berdasarkan sidik ragam ternyata tidak ada interaksi antara komposisi media tanam dengan klon karet. Komposisi kompos limbah ampas tahu pada media tanam dapat meningkatkan laju pertumbuhan stum mata tidur/bibit karet , media tanam 10 % kompos
PRODUKTIVITAS TANAMAN PAKCOY (BRASSICA RAPA L) MENGGUNAKAN HIDROPONIK SISTEM RAKIT APUNG M. Umar Harun; Erizal Sodikin; Hadi Wirsawan
Publikasi Penelitian Terapan dan Kebijakan Vol 5 No 2 (2022): Publikasi Penelitian Terapan dan Kebijakan
Publisher : Badan Penelitian dan Pengembangan Daerah Provinsi Sumatera Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46774/pptk.v5i2.496

Abstract

Penelitian ini dilakukan di hidroponik farm, Desa Permata Baru, Indralaya Utara, Ogan Ilir. Penelitian dimulai dari bulan April hingga Juni 2022. Kegiatan penelitian budidaya pakcoy sistem rakit apung ini dilakukan dalam tiga tahap yaitu Penyemaian, Peremajaan, dan Pembesaran. Penyemaian dilakukan pada bak semai dengan media rockwool selama satu minggu sampai tumbuh dua helai daun. Bibit dengan dua helai daun dipindahkan ke instalasi peremajaan selama satu minggu sampai terbentuk 4-6 helai daun. Bibit dari peremajaan selanjutnya dipindahkan pada bak pembesaran dengan ukuran kolam rakit apung sekitar 9 m x 1,5 m. Pada setiap kolam diberi 27 unit rakit apung dengan ukuran 1 m x 0,5 m sehingga terdapat 27 unit rakit apung. Untuk setiap rakit apung ditanam pakcoy dengan jarak tanam 20 x 15 cm (15 tanaman/rakit). Penetapan tanaman sampel dilakukan secara acak yaitu memilih tiga tanaman per rakit, dan total sampel sebanyak 81 tanaman (5% populasi). Budidaya tanaman pakcoy dengan Teknik Rakit Apung (TRA) mampu menghasilkan berat segar 164 g/tanaman, dan jumlah tanaman layak jual sebanyak 70%.
Co-Authors Chandra Irsan Erizal Sodikin Erizal Sodikin Hadi Wirsawan Haris Kriswantoro Ifran Imanda Munandar Munandar NUNI GOFAR Renih Hayati Rujito Agus Suwignyo Sabaruddin Kadir Wijaya Mardiansyah Yopie Moelyohadi Yudo Winarso