Articles

APPLICATION OF BIOCHAR FROM PALM OIL PLANTS RESIDUES ON PHYSICAL PROPERTIES OF ULTISOL Rusdi, Irfan; Rauf, abdul; Supriadi, Supriadi; Hidayat, Benny
AGRITROPICA : Journal of Agricultural Sciences Vol 2, No 2 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agritropica.2.2.93-97

Abstract

Ultisol is one type of soil that has several problems for plant growth. The main problems are poor physical properties such as high bulk density, low soil permeability, and low water retention ability. This research aim was to determine the effects of various application of biochar made of oil palm plants residue on bulk density and soil porosity of Ultisol soil. The research design used a non-factorial completely randomized design, consisting of 5 treatments, namely without biochar application (control), oil palm stem biochar, oil palm frond biochar, oil palm empty fruit bunches biochar and combination of biochar ingredients. Each treatment was repeated 4 times hence the number of experimental units became 20 units. The parameters observed included bulk density and soil porosity. The research results showed that biochar application significantly reduced the bulk density and significantly increased the soil porosity of Ultisol soil.
PERBAIKAN SIFAT TANAH KEBUN KAKAO PADA BERBAGAI KEMIRINGAN LAHAN DENGAN MENGGUNAKAN TEKNIK BIOPORI DAN MULSA VERTIKAL Maharany, Rina; Rauf, Abdul; Sabrina, T.
Jurnal Ilmu Pertanian KULTIVAR Vol 5, No 2 (2011)
Publisher : Jurnal Ilmu Pertanian KULTIVAR

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Abstract

Pengelolaan limbah tanaman kakao masih belum ditangani dengan tepat, salah satu upaya pengelolaan yang tepat dalam pengelolaan serasah kakao adalah dengan membenamkannya ke dalam tanah agar terjadi percepatan pelapukan (secara biopori dan mulsa vertikal) dan memberikan kontribusi terhadap perbaikan dan kesuburan sifat tanah. Tujuan penelitian ini adalah untuk mengevaluasi teknik yang paling tepat dilakukan dalam penempatan serasah kakao terhadap perbaikan sifat tanah di kebun kakao, dan untuk mengevaluasi pengaruh kemiringan lahan terhadap sifat tanah di perkebunan kakao, untuk mengevaluasi interaksi antara penempatan serasah kakao dan kemiringan lahan terhadap sifat tanah di perkebunan kakao. Metoda penelitian yang digunakan adalah Rancangan Petak Berjalur (Strip Plot Design) dengan 3 (kali) ulangan. Faktor pertama adalah kemiringan lahan yaitu lahan datar, lahan landai dan lahan miring. Faktor kedua adalah penempatan serasah kakao yaitu tanpa pemberian mulsa (kontrol), penempatan serasah secara biopori, dan penempatan serasah secara mulsa vertikal. Hasil penelitian menunjukkan bahwa perlakuan penempatan serasah kakao berpengaruh nyata terhadap perbaikan sifat tanah dikebun kakao terutama penempatan serasah kakao secara mulsa vertikal. Perlakuan kemiringan lahan berpengaruh nyata terhadap sifat tanah kebun kakao, yang lebih baik adalah pada kemiringan lahan datar. Interaksi antara perlakuan penempatan serasah kakao dan kemiringan lahan berpengaruh nyata terhadap perbaikan sifat fisik, sifat kimia, dan sifat biologi tanah di kebun kakao. Kata kunci: biopori, mulsa vertikal, sifat fisik, kimia, biologi tanah
EFEK PEMBERIAN KOMPOS LIMBAH PADAT PENGOLAHAN MINYAK NILAM DAN PUPUK FOSFAT TERHADAP TANAMAN NILAM (POGOSTEMON CABLIN BENTH.) Banurea, Adei Johan M; Damanik, B. Sengli; Rauf, Abdul
Jurnal Ilmu Pertanian KULTIVAR Vol 4, No 2 (2010)
Publisher : Jurnal Ilmu Pertanian KULTIVAR

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Abstract

Pengujian penggunaan kompos limbah padat pengolahan minyak nilam dan pupuk fosfat terhadap pertumbuhan dan produksi nilam (Pogostemon cablin Benth) di Kabupaten Pakpak Barat. Nilam ialah salah satu tanaman industri yang memiliki pelung dan potensi untuk dikembangkan sebagai komoditas unggulan daerah. Informasi pemupukan dan pemanfaatan limbah menghasilkan minyak nilam sampai saat ini masih sangat terbatas. Tujuan penelitian adalah untuk mengetahui dosis kompos limbah padat penyulingan minyak nilam dan pupuk fosfat yang tepat bagi pertumbuhan dan produksi nilam di Kabupaten Pakpak Barat. Penelitian ini dilaksanakan pada bulan Maret 2010 sampai Agustus 2010 di Desa Kaban Tengah, Kecamatan Sitellu Tali Urang Jehe, Kabupaten Pakpak Barat, Propinsi Sumatera Utara.  Metode penelitian yang digunakan adalah Rancangan Acak Kelompok (RAK) Faktorial dengan 2 faktor yaitu : Perlakuan taraf kompos limbah padat pengolahan minyak nilam 0 ton/ha, 10 ton/ha, 20 ton/ha, 30 ton/ha dan perlakuan taraf pupuk fosfat 0 kg/ha, 50 kg/ha, 100 kg/ha, 150 kg/ha, 200 kg/ha. Dari hasil penelitian menunjukkan bahwa bobot kering daun yang merupakan parameter produksi tanaman nilam terbaik dihasilkan oleh perlakuan 30 ton/ha kompos limbah padat pengolahan minyak nilam dan 50 kg/ha pupuk fosfat, tetapi tidak berbeda nyata dengan perlakuan 20 ton/ha kompos limbah padat pengolahan minyak nilam dan 10 kg/ha pupuk fosfat. Penggunaan kombinasi perlakuan meningkatkan produktivitas tanaman dan kadar patkouli alkohol. Kata kunci: Pogostemon sp, limbah, pemupukan, dan Kabupaten Pakpak Barat.
ANALISIS EFEKTIFITAS KINERJA KEUANGAN DINAS PENDAPATAN DAERAH (DISPENDA) KOTA MAKASSAR Rauf, Abdul
AKMEN Jurnal Ilmiah Vol 8 No 4 (2011): AKMEN Jurnal Ilmiah
Publisher : AKMEN Jurnal Ilmiah

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Abstract

Financial performance is a picture of financial condition in a given period either in relation to aspects of fund raising and distributing funds that are usually measured by indicators of capital adequacy, liquidity, and profitability. Profitability assessment aspect to determine the ability to create profits, which are certainly important for the owners. With good financial performance will ultimately affect both the internal and for external parties.
SISTEM PERTANIAN TERPADU DI LAHAN PEKARANGAN MENDUKUNG KETAHANAN PANGAN BERKELANJUTAN DAN BERWAWASAN LINGKUNGAN Rauf, Abdul; Rahmawaty, Rahmawaty; Said, Dewi Budiati T.J.
Pertanian Tropik Vol 1, No 1 (2014)
Publisher : Pasca Sarjana FP USU

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Abstract

Pembangunan sistem pertanian terpadu telah dilakukan di salah satu lahan pekarangan warga Desa Sei Semayang Kecamatan Sunggal Kabupaten Deli Serdang Sumatera Utara. Di lahan seluas ± 1022 m2 terdapat pohon hutan berupa kombinasi mahoni, dan jati (berumur 11 tahun), serta trembesi, damar, jelutung dan ketapang (berumur 3 tahun), di lahan selanya dipelihara ternak kambing, ikan (kolam tanah untuk ikan lele, nila, patin, dan gurami), unggas (itik dan ayam), serta sebagian lahan ditanami tanaman pertanian (sayuran terong, cabai, rimbang, ubi kayu, dan lain-lain) dengan sistem surjan dan pot yang secara intensif dilakukan sejak Januari 2012 hingga kini. Dari pohon hutan telah dipanen 3 batang pohon mahoni untuk pembuatan kusen pintu dan jendela. Dari kolam telah dipanen ikan lele dumbo dan dari 10 ekor ternak kambing telah berkembang menjadi 14 ekor dalam 1 tahun. Dari 15 ekor induk itik dan ayam dapat dipanen rata-rata 5 butir telur per hari. Dengan demikian, sistem ini telah memberi manfaat tambahan kesejahteraan ekonomi keluarga dan perbaikan ekologi (kesejukan dan peningkatan biodiversitas) di lahan pekarangan. Pengelola sistem pertanian terpadu ini adalah Komunitas Pemuda Peduli Lingkungan (KOPPLING) Pondok Miri Desa Sei Semayang.Kata kunci: lahan pekarangan, sistem pertanian terpadu, variasi produksi, perbaikan ekologi,
MORPHOLOGY AND PHYSIOLOGY CHARACTERISTIC OF SOME VARITIES OF RICE UNDER SALINITY STRESS Barus, Wan Arfiani; Rauf, Abdul; Damanik, B. Sengli; Rosmayati, .
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 1 (2013): Life Sciences
Publisher : Syiah Kuala University

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Abstract

This experiment was aimed to evaluate yield potential and adaptability of some varieties of rice based on some morphological and physiological characters. This study was conducted at Paluh Merbau village, Percut Sei Tuan Sub-District, Deli Serdang District, North Sumatera, Indonesia on March 2012 till July 2012. This research was arranged in a randomized block design non factorial with three replications. Eight varieties used are Ciherang, IR 64, Lambur, Batanghari, Banyuasin, IR 42, Inpara 10 and Margasari. Salinity stress in rice leads to changes in both morphological and physiological characters of plants, where the response of each genotype varies depending on the nature of tolerance or sensitivity to salt stress. Observation of growth and production showed that genotif IR 42 had the best growth and the highest production as compared with other varieties
ANALYSIS OF LAND SUITABILITY AND CARRYING CAPACITY OF RABBITFISH (SIGANUS CANALICULATUS) CULTURE IN SEAGRASS ECOSYSTEM IN COASTAL AREAS OF BARRU DISTRICT, SOUTH SULAWESI Rauf, Abdul
TORANI: Journal of Fisheries and Marine Science VOLUME 2 NOMOR 1, DESEMBER 2018
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15.153 KB) | DOI: 10.35911/torani.v2i1.5855

Abstract

Rabbitfish (Siganus canaliculatus) are found in seagrass beds so that they have the potential to be cultivated in the ecosystem. Cultivation activities require appropriate environmental / land requirements and support to be able to live and develop optimally. This study aims to analyze: (1) Suitability of rabbitfish cultivation land in seagrass ecosystem, (2) The carrying capacity of the land for rabbitfish cultivation in the seagrass ecosystem. This research was carried out in the coastal area of Barru Regency in March-April 2017. This study uses a method with the Remote Sensing Technology and Geographic Information Systems (GIS) approach. The types of data collected are oceanographic oceanic parameters consisting of physical factors (temperature, depth, current velocity, and turbidity), and chemical factors (salinity, pH and DO). The results of the study showed that the waters area was suitable ± 135.76 ha. Results estimation of the carrying capacity/capacity of the waters for rabbitfish cultivation with an area of about 81.46 ha or around 407,300 cultivation units or 5000 units / ha (assuming 1 unit of cultivation =      2 m2 (0,0002 ha).Keywords: land suitability, rabbitfish, carrying capacity
CORRELATION OF STREAMFLOW AND SEDIMENT CONCENTRATION AT UPSTREAM AND DOWNSTREAM PADANG WATERSHED Lubis, Kemala Sari; Harahap, Erwin Masrul; Rauf, Abdul; Hasibuan, Zainal Arifin
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 2 (2013): Engineering
Publisher : Syiah Kuala University

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Abstract

Sediment concentration affected b streamflow at river body. This research was conducted to study correlation between streamflow and sediment concentration at upstream and downstream Padang watershed on July until December 2013. The research was conducted by using survey method at two outlet of Padang watershed were Padang sub watershed and Padang Hilir sub watershed. Sampling of water at two (2) outlets were conducted at stream surface by using depth intergrating suspended sediment sampler technique at three (3) points of river body. Sampling waters conducted at two times that were after rainand no rain. Sediment concentration (Cs) calculated by Cs = (G2 ? G1) / V equation. Streamflow (Q) calculated by multiplying velocity and wide of river by Q = A x V equation. The results showed that no correlation between streamflow and sediment concentration at upstream when no rain (Cs = 0,0007 +0,0412 Q; R2 = 0,43) and at downstream when no rain (Cs = 0,0002 Q + 0,07157; R2 = 0,057). There were correlation between streamflow and sediment concentration at upstream after rain (Cs = 0,00041 Q +0,0611; R2 = 0,88) and at downstream after rain (Cs = 0,00015 Q + 0,03293; R2 = 0,9).
KARAKTERISTIK TANAH DAN PERBANDINGAN PRODUKSI KELAPA SAWIT (Elaeis guineensis Jacq.) DENGAN METODE TANAM LUBANG BESAR DAN PARIT DRAINASE 2:1 PADA LAHAN SPODOSOL DI KABUPATEN BARITO TIMUR PROPINSI KALIMANTAN TENGAH - INDONESIA Surianto, Surianto; Rauf, Abdul; Sabrina, T.; Sutarta, Edi Sigit
Pertanian Tropik Vol 2, No 2 (2015)
Publisher : Pasca Sarjana FP USU

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Abstract

Spodosol soil of Typic Placorthod sub-group of East Barito District is one of the problem soils with the presence of hardpan layer, low fertility, low water holding capacity, acid reaction and it is not suitable for oil palm cultivation without any properly specific management of land preparation and implemented best agronomic practices. A study was carried out to evaluate the soil characteristic of big hole (A profile) and non big hole (B profile) system and comparative oil palm productivity among two planting systems. This study was conducted in Spodosol soil at oil palm plantation (coordinate X = 0281843 and Y = 9764116), East Barito District, Central Kalimantan Province on February 2014, by surveying of placic and ortstein depth and observing soil texture and chemical properties of 2 (two) oil palms soil profiles that have been planted in five years. Big hole system of commercial oil palm field planting on Spodosol soil area was designed for the specific purpose of minimizing potential of negative effect of shallow effective planting depth for oil palms growing due to hardpan layer (placic and ortstein) presence as deep as 0.25 - 0.50 m. The big hole system is a planting hole type which was vertical-sided with 2.00 m x 1.50 m on top and bottom side and 3.00 m depth meanwhile the 2:1 drain was vertical-sided also with 1.50 m depth and 300 m length. Oil palm production was recorded from year of 2012 up to 2014. Results indicated that the fractions both big hole profile (A profile) and non big hole profile (B profile) were dominated by sands ranged from 60% to 92% and the highest sands content of non big hole soil profile were found in A and E horizons (92%). Better distribution of sand and clay fractions content in between layers of big hole soil profiles of A profile sample is more uniform compared to B profile sample. The mechanical holing and material mixing of soil materials of A soil profile among the upper and lower horizons i.e. A, E, B and C horizons before planting that resulted a better distribution of both soil texture (sands and clay) and chemical properties such as acidity value (pH), C-organic, N, C/N ratio, CEC, P-available and Exchangeable Bases. Investigation showed that exchangeable cations (Ca, Mg, K), were very low in soil layers (A profile) and horizons (B profile) investigated. The low exchangeable cations due to highly leached of bases to the lower layers and horizons. Besides, the palm which was planted on the big hole system showed good adaptation and responsed positively by growing well of tertiary and quaternary roots that the roots were penetrable in to deeper rooting zone as much as >1.00 m depth. The roots can grow well and penetrate much deeper in A profile compared to undisturbed hard pan layer (B profile). The FFB (fresh fruit bunches) production of non big hole block was higher than big hole block for the first three years of production. This might be due to the high variation of monthly rainfall in between years of observation from 2009 to 2014. Therefore, the hardness of placic and ortstein as unpenetrable agents by rootsJurnal Pertanian Tropik ISSN Online No : 2356-4725Vol.2, No.2. Agustus 2015. (19) : 148- 158149and water to prevent water loss and retain the water in the rhizosphere especially in the drier weather. In the high rainfall condition, the 2:1 drain to prevent water saturation in the oil palm rhizosphere by moving some water in to the drain. Meanwhile the disturbed soil horizon (big hole area) was drier than undisturbance immediately due to water removal to deeper layers. We concluded that both big hole and 2:1 drain are suitable technology for Spodosol soil land especially in preparing of palms planting to minimize negative effect of hardpan layer for oil palm growth.Key words : Spodosol, Typic Placorthod, big hole, drain, fresh fruit bunches, hardpan, placic, ortstein
INTERSEPSI CURAH HUJAN DI HUTAN HUJAN TROPIS: STUDI KASUS DI TAMAN NASIONAL LORE LINDU SULAWESI TENGAH Rauf, Abdul; Pawitan, Hidayat; June, Tania; Kusmana, Cecep
Jurnal Ilmu Pertanian Indonesia Vol. 13 No. 1 (2008): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

This filed research was conducted from Apr 2006 to .Juni 2007 at natural tropical rainforest of the Lore Lindu National Park, Central Sulawesi. The objectives were to study the effect of rainfall properties and vegetation characters on interception losses through mathematical model approach, to estimate the rainfall interception losses and to determine the dominant factors influencing them. Observation of vegetation characters in the study area indicated that the vertical and horizontal structure were in good conditions with high leaf area index (LAI 4.8-6.43 m2.m-2 ), ground cover (68.5-92.59%) and wide canopy at average 5.59 (12.05-9.83 m2 Total rainfall (P) on the first measuring phase (Apr 2006-March 2007) was 1502,6mm for 172 events. Dominant rainfall depth was 0.5-5mm for 78 events with cumulative rainfall at 182.2mm or 12.3%, of P. Dominant rainfall intensity was 1--10 mm per hour for 121 events with cumulative rainfall 140.2 mm or 9.3 % of P. The mathematical relationship between rainfall properties and vegetation characters with throughfall, stemflow and interception loss show that rainfall depth and LAI are two factors that strongly influences as expressed: interception loss: Ic= 0. 786+0.343* P+0.051 *LA I (R2=73,77) Application of this equation and Gash model to the second measurement phase (Apr 2007-Juni 2007) gave good agreement on interception estimate and sensitivity, and considering data requirement and calculation procedure this equation is applicable for interception estimation. The critical point of this result is the rainfall properties on Lore Lindu National Park that is very important to forest management, especially in controlling of flooding. Keywords : rainfall interception, tropical rain forest, vegetation characters
Co-Authors . Rosmayati Abdul Aziz Jemain Abdullah Abdullah Abdullah, Hasrun Abusari Marbun, Abusari Adei Johan M Banurea Agoesdy, Riza Agustoni Tarigan, Agustoni Aiyen, Aiyen Aiyen, Aiyen Akbi, Denar Regata alfarisi, salman Ali Karim Andi Asni, Andi Asbar Asbar, Asbar Asbar, Muhammad Asmidar Asmidar Ayu, Neneng Gusti Ayyub, Fachrie Rezka B. Sengli Damanik Bejo Slamet Benny Hidayat Bentrovolta Bentrovolta, Bentrovolta Br Pinem, Dea Kartika Budi Hartono Budiarto Budiarto C. Kusmana CECEP KUSMANA CHAIRANI HANUM Dalimunthe, Badrul Ainy Delvian Delvian Deni Elfiati Dewi Budiati T.J. Said Dewi Fortuna Ayu Dodi Bagus Widodo, Dodi Bagus Edi Purwanto Edi Sigit Sutarta, Edi Sigit Erwin Masrul Harahap Faiqurahman, Mahar Fattah, Muhammad H. Fitri Eriyanti Frastika, Sintike G. Gravenhorst Ghafarunnisa, Desyana Gingga, Flaminggo Goni, Agustina H. Pawitan Hamidah Hanum Hamsiah Hamsiah, Hamsiah Harahap, Fitra Syawal Harahap, Fitra Syawal Hasibuan, Rosmidah Hidayat Pawitan Immawati, Siti Asriah Indun Titisariwati, Indun Inmarlinianto Inmarlinianto, Inmarlinianto Istiqamah, Annisa Kasnir, Muh Kasnir, Muh. Kemala Sari Lubis Kurniawan, Achmad Reza Lalogau, Muhammad Yusran Marthen Arie mico saputra, whin themas Mr. Irwansyah Muh Yusuf Muhaedah Rasyid Muhammad Lazuardi Prasadewo, Muhammad Lazuardi Mustakim Mustakim Nur Ali Amri, Nur Ali Nurhidayat, Iwan Pasaribu, Parlin Hotmartua Putra Pasaribu, Parlin Hotmartua Putra Pertiwi, Imanuela I. Pince Salempa Posma Marbun Pramudya, Ikhsan Pratama Bayu Santosa Putri, Lizha Dwi Mulya Rahmawaty Rahmawaty Rahmawaty, R Retno Widia Siahaan, Marisi Intan Ridwanti Batubara Rina Maharany Rismang, Rismang Rukmi, Sindy Sella Rusdi, Irfan Rustam Rustam Sakka Samudin Salmiah Salmiah Sarifuddin Sarifuddin Siallagan, Lambok M. Sidabuke, Simon Haholongan Sidabuke, Simon Haholongan Sidabukke, Simon Haholongan Sihotang, Elvira Sihotang, Tambun Silvia Nora, Silvia Simarmata, Juliana Epesus Simbolon, Shanti Desima Siregar, Nicho Chandra Sitorus, Novita Ariani Supriadi Supriadi Surianto Surianto Sutomo, Didit Darmawan Syahruddin Syahruddin T. June T. Sabrina Tajuddin, Mustamin TANIA JUNE Usman Made USMAN PATO Utami, Khairuna Walida, Hilwa Wan Arfiani Barus Yusuf, Kamil Zainal Arifin Hasibuan Zulkifli Nasution