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All Journal Jurnal Agrista AGROEKOTEKNOLOGI Journal of Tropical Soils Martabe : Jurnal Pengabdian Kepada Masyarakat PERTANIAN TROPIK

Abdul Rauf

Universitas Sumatera Utara

Author-ID : 2752111

Agriculture, Biological Sciences & Forestry Arts Humanities Education Environmental Science Social Sciences

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Evaluasi Sifat Kimia Tanah Inceptisol Pada Kebun Inti Tanaman Gambir (Uncaria gambir Roxb.) di Kecamatan Salak Kabupaten Pakpak Bharat Ryan Arviandi; Abdul Rauf; Gantar Sitanggang
Jurnal Agroekoteknologi Vol 3, No 4 (2015)
Publisher : Universitas Sumatera Utara

Evaluation of Inceptisol soil chemical in Gambir Core Garden in the Sub district of Salak Pakpak Bharat District has been conducted from March 2013 to June 2013. This study aimed to evaluate the soil chemical (pH, N, P, K, CEC, Organic Carbon, Exchangable Aluminuim) based on land position on the Gambir Core Garden of Pakpak Bharat District. The method used in this research is descriptive method by conducting surveys and soil sampling based land position on the top of the hill, hillside and part of the valley. The results show the value of N and Organic Carbon are tends to rise in the valley compared to the top of the hill and the hillside. As for the value of CEC and Exchangable Aluminium are tend to rise on the hillside compared to to the top of the hill and the valley, while the value of pH, P and K are relatively same.Keyword: land position, soil chemical, gambir (Uncaria gambir Roxb.)

Erosi Kualitatif Pada Perkebunan Karet Umur 25 Tahun di Desa Lau Damak Kecamatan Bahorok, Kabupaten Langkat M Hadi Syahlan Hasibuan; Abdul Rauf; Bintang Sitorus
Jurnal Agroekoteknologi Vol 3, No 4 (2015)
Publisher : Universitas Sumatera Utara

This research was aims to study the qualitative erosion on land cultivation of 25 Years old rubber trees in Lau Damak Village, Bahorok District, Langkat Region. The research was conducted from September-December 2014 by doing field activities and laboratory activities. Field activities was sampling the soil on slope 26-28 % with textured sandy clay loam, then the soil samples were analysed at BPTP Laboratory, Medan. Then the results of the analysis were processed by T-test.The results showed P-available,CEC and clay fraction is significant on slope position, but not significant to N-total, K-dd and C-organic. The highest average of CEC and clay fraction are in the middle of the slope. The highest average N-total and C-organic are in the slope above. The highest average pH, P-available and K-dd are in the lower slopes, the bulk density in each slope have a same value.Key words : Qualitative erosion, , 25 years old rubber trees

Kajian Erosi Kualitatif Pada Budidaya Tanaman Karet Rakyat Usia 15 Tahun di Desa Lau Damak Kecamatan Bahorok, Kabupaten Langkat Achmad William Halimas; Abdul Rauf; Mukhlis Mukhlis
Jurnal Agroekoteknologi Vol 3, No 4 (2015)
Publisher : Universitas Sumatera Utara

Qualitative Erosion Studies on The Rubber Cultivation of The People Age 15 Years In the village of Lau Damak Bahorok subdistrict Langkat. The study aims to determine the qualitative erosion in the area of cultivation by using descriptive method with sampling technique based on stratified random sampling method. Research analyzing various parameters such as pH level of soil fertility, texture, Cation Exchange Capacity (CEC). Organic C, N-total, P-available, K can be exchanged (K-dd) and Bulk Density. The results show that the qualitative erosion that occurs in the area of rubber cultivation people aged 15 years in the village of Lau Damak Bahorok subdistrict Langkat cause terangkutnya nutrients P and K to the valley as well as the value of the levels of C-organic and N-total high value of land in the back caused by a number of existing litter above the soil surface.Required soil and water conservation efforts in the form of ground cover (cover crop) as well as the manufacture of terracing on slopes to prevent soil erosion.Key words : Descriptive, Qualitative erosion, Stratified Random Sampling.

Karakteristik Fisika Tanah Pada Beberapa Tegakan di Subdas Petani Kabupaten Deli Serdang Sumatera Utara Vidiya Novelin Lubis; Abdul Rauf; Bintang Sitorus
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

Penggunaan lahan di daerah hulu DAS terdiri dari kawasan hutan, pertanian, dan agroforestri. Berbagai komposisi tegakan tanaman yang berbeda–beda akan mempengaruhi kondisi tanah baik pada sifat fisika maupun kimia tanah. Penelitian ini bertujuan untuk mendapatkan karakteristik fisika tanah pada beberapa tegakan di Sub DAS Petani. Lokasi penelitian di desa Buluh Awar, Kecamatan Sibolangit Kabupaten Deli Serdang Sumatera Utara, Laboratorium Fisika Tanah dan Laboratorium Riset dan Teknologi Fakultas Pertanian Universitas Sumatera Utara pada bulan Maret sampai dengan Agustus 2015. Teknik sampling berdasarkan metode purposive sampling dengan 4 perlakuan dan 5 ulangan. Data diolah dengan uji Anova dan uji BNT taraf 5%. Hasil penelitian menunjukkan bahwa permeabilitas tanah tertinggi terdapat pada tegakan tanaman durian (7,310 cm/jam) dan berbeda nyata pada tanah tegakan tanaman aren (3,842 cm/jam) dan karet (4,606 cm/jam) tetapi tidak berbeda nyata dengan hutan (5,712 cm/jam). Tegakan hutan dan tegakan tanaman serbaguna tidak berpengaruh nyata terhadap kerapatan isi (bulk density), porositas tanah dan kadar air tanah.

Karakteristik Biologi Tanah pada Berbagai Penggunaan Lahan di Sub DAS Petani Kabupaten Deli Serdang Sumatera Utara arif ghazali ritonga; abdul rauf; Jamilah Jamilah
Jurnal Agroekoteknologi Vol 4, No 3 (2016)
Publisher : Universitas Sumatera Utara

Penggunaan lahan yang didominasi dengan berbagai vegetasi penutup lahan yang memiliki sifat biologi tanah yang baik merupakan salah satu indikator DAS yang baik.Penelitian ini bertujuan untuk mendapatkan karakteristik biologi tanah pada berbagai penggunaan lahan di Sub DAS Petani. Penelitiandilakukan di desa Buluh Awar, Kecamatan Sibolangit Kabupaten Deli Serdang Sumatera Utara, di Laboratorium BPT Bogor, Laboratorium Biologi Tanah Fakultas Pertanian Universitas Sumatera Utara padabulan Maret sampai dengan November 2015. Penelitian ini menggunakan teknik sampling berdasarkan metode purposive sampling.Parameter yang diukur yaitu C–organik, N–total, C/N, respirasi tanah, populasi cacing tanah dan total populasi mikroorganisme.Data diuji dengan uji t taraf 5%. Hasil penelitian menunjukkan bahwa perubahan tegakan hutan menjadi berbagai tegakan menurunkan kandungan C–organik tanah, N–total tanah, populasi cacing tanah, respirasi tanah dan populasi mikroorganisme, meningkatkan rasio C/N. Meskipun tidak menunjukan perbedaan karakteristik biologi tanah, namun tanaman aren dan durian lebih dianjurkan.

perbaikan sifat kimia tanah sawah akibat pemberian bahan organik pada pertanaman semangka (citrullus lanatus) jonson armando simamora; Abdul Rauf; Purba Marpaung; Jamila Jamila
Jurnal Agroekoteknologi Vol 4, No 4 (2016)
Publisher : Universitas Sumatera Utara

Tanah sawah adalah tanah yang digunakan untuk bertanam padi sawah sepanjang tahun maupun bergiliran dengan tanaman palawija. Kandungan bahan organik tanah yang rendah merupakan salah satu permasalahan utama yang menyebabkan rendahnya produktivitas lahan sawah. Penelitian ini bertujuan untuk mengetahui perubahan beberapa sifat kimia tanah sawah akibat pemberian bahan organik pada pola tanam padi - semangka. Penelitian ini dilakukan di Desa Air Hitam Kecamatan Lima Puluh Kabupaten Batu Bara Provinsi Sumatera Utara mulai April sampai Juli 2014. Penelitian ini menggunakan Rancangan Acak Kelompok dengan perlakuan Bahan Organik yaitu Tanpa bahan organik, Jerami padi 5ton/ha, pupuk kandang domba 2,5ton/ha, pupuk petroganik dan mulsa jerami 0,5ton/ha. Hasil penelitian menunjukkan bahwa pemberian pupuk petroganik dan mulsa jerami 0,5ton/ha nyata meningkatkan C-organik tanah dan pH tanah, dan pemberian pupuk kandang domba 2,5ton/ha nyata meningkatkan K-tukar tanah serta pemberian jerami padi 5ton/ha nyata meningkatkan berat buah dan diameter buah.

Dampak Penanaman Pohon Hutan di Lahan Perkebunan Karet (Hevea brasiliensis Muell.Arg) Pada Sifat Biologi Tanah di Kecamatan Bahorok Kabupaten Langkat Muhammad Thamrin; Abdul Rauf; Benny Hidayat
Jurnal Agroekoteknologi Vol 5, No 2 (2017)
Publisher : Universitas Sumatera Utara

ABSTRACT The objectives of the research ware to study the effect of Gaharu, Damar, and Meranti wood planting on rubber plantation site over soil biological properties in District Bohorok Langkat as well as to see the effect of the best tree for land space in rubber plantation. Research conducted at Land of Rubber Plantation in the village of Batu Jonjong and Timbang Lawan in February 2016 until June 2016. This research used survey descriptive method by purposive sampling method. Sampling chosen ware for: control as rubber without intercrops (K0), rubber trees intercrops with Gaharu (K1), rubber trees intercrops with Damar (K2) and rubber trees intercrops with Meranti (K3). The measured parameters ware organic C, total N, C/N, microbes total, soil respiration, soil macrofauna and earthworms. The results showed that planting gaharu, damar and meranti gave effect improvement of biological properties in rubber plantation and the best tree for land space in rubber plantation was rubber with Damar trees (K2). Keywords: Plant-stream, purposive sampling, soil biology

Co-Authors Abusari Marbun Achmad William Halimas Agus Toni Tarigan Alief Aththorick Arief Setiawan Sutanto Aries Sukariawan arif ghazali ritonga Arif NURYAWAN Asmarlaili Sahar Hanafiah Azri Syauki Benny Hidayat Bintang Sitorus Bintang Sitorus Bolot Santoso Chairani Hanum Chairani Hanum Deni Elfiati Denny R. Siregar Dwi Putriana Br Tambunan Edison Parulian Sihombing Edy Frans Redoman Nadapdap Erwin Nyak Akoeb Fitra Syawal Harahap Gantar Sitanggang Hadi Wijoyo Hamidah Hanum Harahap, Darmadi Erwin Hardy Guchi jamila Jamila Jamilah Jamilah jonson armando simamora Lahuddin Musa M Hadi Syahlan Hasibuan Mariani sembiring Mazlina Mazlina Mhd Arian Torang Mohd Hasmadi Ismail Muhammad Afrillah Muhammad Arif Setiawan Muhammad Fuad Abdullah Muhammad Madjid B. Damanik Muhammad Maksum Harahap Muhammad Thamrin Mukhlis, Mukhlis Peter Aning Tedong Purba Marpaung Rahmawaty, Rahmawaty Raja Forman Barasa Razali Ridwanti Batubara Rika Tamika Riri Rizki Chairiyah Ryan Arviandi Sahala M Manurung Seca Gandaseca Silvia Nora, Silvia Sintike Frastika Siti Kholizah T Sabrina Takahiro Fujiwara Vidiya Novelin Lubis

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