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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu Pertanian Indonesia Jurnal Hortikultura Indonesia (JHI) Jurnal Ilmu dan Teknologi Hasil Hutan Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Reaktor Rotasi Jurnal Ilmu Lingkungan Jurnal AGROTEKNOLOGI Journal of Tropical Soils Jurnal Ekonomika Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Jurnal Al Bayan: Jurnal Jurusan Pendidikan Bahasa Arab Analisis: Jurnal Studi Keislaman Jurnal Penelitian Hutan Tanaman Indonesian Journal of Agricultural Science Jurnal Tanaman Industri dan Penyegar JAM : Jurnal Aplikasi Manajemen JTSL (Jurnal Tanah dan Sumberdaya Lahan) Journal of Degraded and Mining Lands Management Plantropica: Journal of Agricultural Science AGRIVITA, Journal of Agricultural Science Transformasi: Jurnal Pengabdian Masyarakat Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Al-Tadzkiyyah Intizar Jurnal Sumberdaya Hayati EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi dan Bisnis Jurnal Tataloka Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Jurnal Sejarah dan Budaya Jurnal Ilmiah Pertanian Terampil : Jurnal Pendidikan dan Pembelajaran Dasar Kultivasi Al-Wijdan : Journal of Islamic Education Studies Jurnal Pilar Nusa Mandiri Jurnal Bina Praja SAINS TANAH - Journal of Soil Science and Agroclimatology JEPA (Jurnal Ekonomi Pertanian dan Agribisnis) Journal of Regional and Rural Development Planning Agrin : Jurnal Penelitian Pertanian AFEBI Economic and Finance Review Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan Pendas : Jurnah Ilmiah Pendidikan Dasar Manajer Pendidikan: Jurnal Ilmiah Manajemen Pendidikan Program Pascasarjana JMM (Jurnal Masyarakat Mandiri) METHOMIKA: Jurnal Manajemen Informatika & Komputerisasi Akuntansi Jurnal Penelitian Kelapa Sawit Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Berkala Bioteknologi INTECOMS: Journal of Information Technology and Computer Science Journal of Environmental Engineering & Waste Management JMKSP (Jurnal Manajemen, Kepemimpinan, dan Supervisi Pendidikan) JURNAL AGROHITA JSiI (Jurnal Sistem Informasi) JAST : Jurnal Aplikasi Sains dan Teknologi Astonjadro Journal of Humanities and Social Studies EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup Seminar Nasional Lahan Suboptimal JURNAL ILMIAH M-PROGRESS BUANA SAINS Agroteknika JSAI (Journal Scientific and Applied Informatics) Jurnal Perencanaan Pembangunan Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Performance : Jurnal Bisnis dan Akuntansi Jurnal Ilmiah Edunomika (JIE) MUKADIMAH: Jurnal Pendidikan, Sejarah, dan Ilmu-ilmu Sosial INTEGRITAS : Jurnal Pengabdian PARETO : Jurnal Ekonomi dan Kebijakan Publik JIIP (Jurnal Ilmiah Ilmu Pendidikan) Al-Isyraq: Jurnal Bimbingan, Penyuluhan, dan Konseling Islam Jurnal Tanah dan Iklim Jurnal Psikiatri Surabaya (Surabaya Psychiatry Journal) JURMA : Jurnal Program Mahasiswa Kreatif Ministrate: Jurnal Birokrasi dan Pemerintahan Daerah Jurnal Riset Sistem Informasi dan Teknologi Informasi (JURSISTEKNI) Jurnal Scientia Jurnal Agrinika : Jurnal Agroteknologi dan Agribisnis Jurnal Syntax Imperatif : Jurnal Ilmu Sosial dan Pendidikan Journal of Computer Networks, Architecture and High Performance Computing DIMAR: Jurnal Pendidikan Islam Jurnal Pendidikan dan Pembelajaran Indonesia (JPPI) Devotion: Journal of Research and Community Service VARIA HUKUM: Jurnal Forum Studi Hukum dan Kemasyarakatan International Journal of Social Science Berajah Journal Jurnal Valuasi : Jurnal Ilmiah Ilmu Manajemen dan Kewirausahaan STRATEGY : Jurnal Inovasi Strategi dan Model Pembelajaran An-Nuha : Jurnal Pendidikan Islam DIKSI: Jurnal Kajian Pendidikan dan Sosial Andalasian International Journal of Applied Science, Engineering, and Technology Economicus: Jurnal Ekonomi dan Manajemen Ensiklopedia: Jurnal Pendidikan dan Inovasi Pembelajaran Saburai East Asian Journal of Multidisciplinary Research (EAJMR) International Journal of Humanities Education and Social Sciences Jurnal Ilmu Pendidikan (ILPEN) Andalas International Journal of Socio-Humanities (AIJOSH) Jurnal Pengabdian Masyarakat Tjut Nyak Dhien JURNAL HUTAN TROPIS Jurnal Ilmu Hukum, Humaniora dan Politik (JIHHP) Jurnal Pengabdian Mitra Masyarakat (JPMM) Jurnal Insan Journal of Management, Accounting, General Finance and International Economic Issues (MARGINAL) JOMPA ABDI: Jurnal Pengabdian Masyarakat Akademika : Jurnal Pemikiran Islam Makara Journal of Science Ekombis Sains: Jurnal Ekonomi, Keuangan dan Bisnis Journal of Law, Poliitic and Humanities ICO EDUSHA Jurnal Ilmiah MEA (Manajemen, Ekonomi, dan Akuntansi) Jurnal Masyarakat Mengabdi Nusantara Digital Bisnis: Jurnal Publikasi Ilmu Manajemen Dan E-commerce Jurnal Penelitian Ekonomi Manajemen dan Bisnis AL HUKMU: Journal of Islamic Law and Economics Action Research Journal Indonesia (ARJI) Majalah Ilmiah METHODA Journal of Research and Publication Innovation Journal of Advanced Islamic Educational Management Jurnal Abdimas Sosek (Jurnal Pengabdian dan Pembardayaan Masyarakat) Jurnal Pengabdian Masyarakat Bangsa Jurnal Riset Manajemen Jurnal Rekayasa elektrika TOFEDU: The Future of Education Journal International Journal of Multidisciplinary Approach Research and Science OIKONOMIA: Journal of Economics and Management Science Maeswara: Jurnal Riset Ilmu Manajemen dan Kewirausahaan Jurnal Manuhara: Pusat Penelitian Ilmu Manajemen Dan Bisnis The Manager Reveiew Journal Economic Management and Business Journal of Sustainability, Society, and Eco-Welfare Dirasah: Jurnal Pendidikan Islam Hutanasyah : Jurnal Hukum Tata Negara Jurnal Wilayah, Kota dan Lingkungan Berkelanjutan Jingler: Jurnal Teknik Pengolahan Pertanian Jurnal Ekonomi Bisnis Manajemen dan Akuntansi (Jebisma) Darma Cendekia Journal of Geographical Sciences and Education Menawan : Jurnal Riset dan Publikasi Ilmu Ekonomi Teumulong: Journal of Community Service Student Journal of Business and Management (SJBM) Jurnal Imiah Pengabdian Pada Masyarakat (JIPM) Journal of Development Economics and Digitalization, Tourism Economics (JDEDTE) Journal of Tropical Crop Science and Technology Jurnal Padamu Negeri Jurnal Agripet Global Leadership Organizational Research in Management Ektasi : Jurnal Ekonomi, Akutansi dan Organisasi Joong-Ki Pengabdian Kepada Masyarakat Indonesia SEAN (ABDIMAS SEAN) Ekliptika: Jurnal Inovasi Teknologi Berkelanjutan Atestasi : Jurnal Ilmiah Akuntansi JURNAL MANAJEMEN DAN BISNIS INDONESIA

Syaiful Anwar

Departemen Ilmu Tanah Dan Sumbedaya Lahan, Fakultas Pertanian IPB, Jl. Meranti Kampus IPB Dramaga Bogor 16680

Author-ID : 2475383

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HUJAN ASAM DAN LEACHING Fe KE DALAM AIR SUMUR DI WILAYAH INDUSTRI Sutanto, -; Iryani, Ani; Anwar, Syaiful; June, Tania
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Publisher : Fakultas Matematika dan ilmu pengetahuan Alam. Universitas Pakuan.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (472.81 KB)

Wilayah Cibinong-Citeureup terdapat banyak industri, berdebu, dan telah mengalami hujan asam. Salah satu dampak hujan asam adalah degradasi kualitas air sumur. Lebih kurang 75% penduduk di wilayah ini yang memanfaatkan air sumur sebagai air minum. Telah dipelajari distribusi dan dampak hujan asam terhadap peningkatan kadar Fe dalam air sumur. Monitoring air hujan dilakukan pada 30 menit pertama hujan pada 16 lokasi dari tahun 1999 sampai 2009. Data keasaman air hujan setiap tahun dipetakan menggunakan program sufer 6, selanjutnya dilakukan overlay dan diidentifikasi daerah yang mengalami hujan asam intensitas tinggi secara terus-menerus. Monitoring kadar Fe air sumur dilakukan pada 16 lokasi sumur dari tahun 1999 sampai 2009. Keasaman air diukur menggunakan pH meter elektronik, dan Fe ditentukan dengan metoda o-fenantrolin menggunakan spektrofotometer UV-VIS. Hasil penelitian menunjukkan bahwa daerah yang terus-menerus mengalami hujan asam intensitas tinggi (pH<5,0) terjadi seluas 4 km2. Dalam daerah hujan asam intensitas tinggi ini keasaman air hujan terus meningkat dari tahun 1999-2009. Peningkatan keasaman air hujan menyebabkan leaching Fe ke dalam air sumur secara nyata (P 0,049, 95%). Kata kunci : Hujan asam,, leaching, Fe, air sumur, industri

MODEL HUBUNGAN FRAKSI P DENGAN SIFAT KIMIA TANAH SAWAH PADA TIGA KELOMPOK BAHAN INDUK BERBEDA DI JAWA BARAT Susanto, Bambang; Hartono, Arif; Anwar, Syaiful; Sutandi, Atang; Sabiham, Supiandi
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 42, No 2 (2018)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v42n2.2018.135-151

Abstrak. Akumulasi P tanah sawah di Jawa Barat sudah sangat tinggi dan ini menyebabkan P tersedia yang dapat dimanfaatkan tanaman menjadi sedikit. Bahan induk (aluvium, sedimen dan volkan) berpengaruh terhadap dinamika, proses akumulasi, dan transformasi P di dalam tanah. Penelitian ini bertujuan untuk mengetahui bentuk fraksi P dan membuat model persamaan regresi untuk mengestimasi hubungan fraksi P dengan beberapa sifat kimia tanah. Metode penelitian yang digunakan yaitu survei lapang untuk pengambilan contoh tanah dan analisis tanah di laboratorium. Lokasi penelitian adalah tanah sawah di Jawa Barat. Pengambilan contoh tanah dilakukan secara komposit pada tiga garis transek dari utara ke selatan wilayah Jawa Barat pada 60 lokasi pada lapisan tanah 0-20 cm. Penetapan fraksi P tanah di laboratorium mengikuti prosedur fraksionasi secara sekuensial sesuai metode Tiessen dan Moir yang dimodifikasi. Hasil penelitian menunjukkan bahwa akumulasi P tanah sawah di Jawa Barat didominasi fraksi residual-P, NaOH-Po dan NaOH-Pi. Ketiga fraksi ini paling banyak ditemukan pada kelompok tanah sawah berbahan induk volkanik, kemudian sedimen dan terakhir aluvium. Ada tiga faktor utama yang berpengaruh terhadap distribusi fraksi P, yaitu: 1) Fe dan Al oksida, 2) C-organik dan kadar klei tanah, dan 3) basa-basa dapat ditukar, terutama Cadd. Model persamaan regresi yang cukup baik dalam mengestimasi fraksi P tanah sawah adalah model estimasi untuk fraksi NaOH-Pi dan NaOH-Po dengan nilai R2 > 0,4 pada taraf p < 0,05.Abstract. The accumulation of P in paddy fields of West Java is high, causing low available P for plants. The parent material (alluvium, sediment and volcanic materials) influences the dynamics, accumulation, and transformation of P in the soil. This study aims to determine the relationship of P fractions with selected soil chemical properties. The research method used was a field survey for soil sampling and soil analysis in the laboratory. The research location is paddy fields in West Java. Composite soil samples from 60 locations from three transects extending from north to south of the West Java where taken from a soil depth of 0-20 cm. Determination of soil P fraction follows the sequential fractionation procedure according to the modified Tiessen and Moir method. The results showed that the accumulation of P in paddy fields of West Java was dominated by residual-P, NaOH-Po and NaOH-Pi fractions. These three fractions are most commonly found in the group of volcanic parent materials, then followed by sedimentary and alluvium parent meterials. There were three main factors that influence the distribution of the P fraction, namely: 1) Fe and Al oxides both crystalline and amorphous, 2) organic C and soil clay content, and 3) base saturation especially excheABLE Ca. The regression equation models which are quite suitable for estimating the P fraction of paddy soil are the estimation models for NaOH-Pi and NaOH-Po fractions with R2 > 0.4 at p < 0.05.

PENGARUH PEMBERIAN PESTISIDA TERHADAP TRANSFORMASI ASAM FENOLAT SERTA PRODUKSI CO2 DAN CH4 PADA TANAH GAMBUT Suciati, Fuzi; Anwar, Syaiful; Dadang, Dadang; Aviantara, Dwindrata B.; Widyastuti, Rahayu
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 40, No 1 (2016)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v40n1.2016.11-23

Abstrak. Degradasi bahan organik dari tanah gambut menghasilkan berbagai asam fenolat, CO2 dan CH4. Asam fenolat bersifat toksik dan menyebabkan terhambatnya pertumbuhan tanaman. Sebagian pestisida yang diaplikasikan jatuh ke tanah dan bereaksi dengan bahan organik tanah. Penelitian ini bertujuan mempelajari pengaruh penambahan pestisida terhadap ikatan asam fenolat pada tanah gambut serta menganalisis tingkat emisi CO2 dan CH4. Penelitian ini menggunakan 2 jenis pestisida yaitu herbisida paraquat diklorida dan insektisida Buthylphenylmethylcarbamate (BPMC). Dosis pestisida yang digunakan mengacu kepada dosis anjuran, yaitu 4 liter ha-1 untuk paraquat dan 1 liter ha-1 untuk BPMC. Perlakuan menggunakan 3 dosis (setengah, setara dan dua kali dosis anjuran: ?g kg-1): 1.104, 2.208, dan 4.416 untuk paraquat dan 485, 970, dan 1.940 untuk BPMC dengan satu kontrol. Setelah diinkubasi 1, 7, 14 dan 28 hari dilakukan analisis yang meliputi asam fenolat, residu pestisida, gugus fungsional, serta emisi CO2 dan CH4. Hasil penelitian menunjukan bahwa pemberian pestisida menurunkan jumlah asam fenolat di dalam tanah gambut. Penggunaan bahan aktif paraquat dan BPMC memperlihatkan pola yang sama terhadap perubahan konsentrasi asam fenolat dalam tanah. Dosis bahan aktif BPMC 485 ?g kg-1 menyebabkan penurunan residu pestisida lebih tinggi dibandingkan dosis yang lainnya yaitu sebesar 95% setelah 28 hari masa inkubasi. Secara umum penggunaan bahan aktif paraquat pada semua dosis yang diuji tidak meninggalkan residu setelah 28 hari masa inkubasi. Pemeriksaan gugus fungsional dengan FTIR tidak mendeteksi adanya penambahan gugus fungsional baru pada semua dosis dan jenis bahan aktif, namun perubahan intensitas puncak serapan dapat merupakan indikasi bahwa terjadi perubahan komposisi senyawa kimia dalam tanah gambut selama periode inkubasi. Penambahan pestisida tidak nyata mempengaruhi emisi CO2 dan CH4.Abstract. Degradation of organic matter from peat soil produces various phenolic acids, CO2, and CH4. The phenolic acid is known toxic and causes plant growth retardation. Some of pesticide is unintentionally drip on peat soil surface and reacts with organic matter. This study was aimed at evaluating the influence of pesticides on phenolic acid bondings as well as CO2, and CH4 emissions. Two types of pesticides were used: herbicide paraquate dichloride and insecticide Buthylphenylmethyl-carbamate (BPMC). The pesticide dosages were based on the recommended application, i.e. 4 liter ha-1 for paraquat and 1 liter ha-1 for BPMC. Treatments were consisted of 3 levels of dosage (half, equal and two-fold the recommended rates: ?g kg-1): 1,104; 2,208; and 4,416 for paraquat and 485, 970, and 1,940 for BPMC and a control treatment. After 1, 7, 14, and 28 days of incubation, soils in each treatment were analyzed for phenolic acids, pesticide residues, functional groups, and CO2 and CH4 emissions. The results showed that pesticide application reduced the total phenolic acid concentrations of peat soil. Paraquat and BPMC applications showed a similar pattern on soil phenolic acid concentrations. BPMC dosage of 485 ?g kg-1 reduced 95% of pesticide residues, which was the highest reduction compared to any other dosages. In general, paraquat application at the tested dosages left no pesticide residues after 28 days of incubation. The FTIR analysis did not detect appearance of any new functional groups under the tested rates and types of pesticides. However, altered intensity of the absorption peaks could be an indication of compositional changes of the chemical substances within peat soil during the incubation period. Pesticide application did not significantly affect CO2 and CH4 emissions.

Alternatif Perbaikan Kesuburan Tanah Gambut Tebal Abdul Rachim; Atang Sutandi; Syaiful Anwar; Budi Nugroho
Jurnal Ilmu Pertanian Indonesia Vol. 1 No. 2 (1991): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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The soil fertility...

Fraksionasi Fosfor pada Profil Tanah Hutan, Wanatani, dan Tegalan di Jawa Barat Parjono Parjono; Syaiful Anwar; Kukuh Murtilaksono; Lilik Tri Indriyati
Jurnal Ilmu Pertanian Indonesia Vol. 24 No. 4 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

This study aims to evaluate the distribution of phosphorus (P) fractions within the soil horizons or profile of forest, agroforestry, and dryland in West Java and their correlations with soil chemical properties. Evaluation was based on the analytical results of soil samples taken from four soil horizons (Ao or Ap, A1 or A2, B1, and, B2) in each land use types. Fractionation of soil P was carried out using a sequential extraction method to get readily available-P (NaHCO3-P-inorganic (i)-P-organic (o)), rather available-P (NaOH-Pi-Po), slowly available-P (HCl-Pi), not available-P (residual-P), and total-P (HCl25%-P) fractions. The results showed that the average concentration of soil residual-P fraction in all land use types reached >99% of the total-P. The highest average concentration of residual-P fraction was measured in dryland, followed by forest and agroforestry. This indicated that soil P adsorption capacity was very high and resulted in a very low concentrations of the soil available-P fractions. The high concentrations of soil residual-P and total-P fractions were most probably related to P fertilizer application, particularly in dryland soil. Distributions of P fractions within the soil horizons at all land use types were significantly correlated with the concentration of soil organic matter content. It is therefore the concentration of soil NaOH-Po fraction was decreasing with the soil depths. The highest concentration was found at Ao or Ap horizon, although it was not the case for NaOH-Po fractions that was relatively constant.

Pengelolaan dan Pemupukan Fosfor dan Kalium pada Pertanian Intensif Bawang Merah di Empat Desa di Brebes Muliana; Syaiful Anwar; Arief Hartono; Anas D. Susila; Supiandi Sabiham
Jurnal Hortikultura Indonesia Vol. 9 No. 1 (2018): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

ABSTRACTThe management and fertilization of shallot cultivation in Brebes is very intensive. The purpose of this research was to study crop management and phosphorus (P) and potassium (K) fertilizations of shallot cultivation by smallholder farmers in four villages in Brebes. The data were collected through survey method, interview, and questionnaires to 14 respondent farmers, and analysis of P and K content of farmer's soil samples. The results showed that the cropping index (IP) was 400-500% comprised of three to four times of shallot cultivation and one rice cultivation. The fertilizations of P and K were 22-171 kg of P2O5 ha-1 and 22-213 kg K2O ha-1, respectively, while the recommended rates were 54 kg P2O5 ha-1 and 78 kg K2O ha-1, respectively. This varied fertilizations were not significantly correlated with productions, except fertilization of K with production in rainy season that was significantly correlated at P < 0.05 (n = 14, r = 0.532). The soil P status was very high at all locations and at all depths (0 - 80 cm), while the soil K status ranged from medium to very high. Keywords: nutrient accumulation, nutrient availability, nutrient residue, nutrient status, smallholder farmersABSTRAKPengelolaan dan pemupukan pada budidaya bawang merah di Brebes sangat intensif. Tujuan penelitian ini ialah mengkaji pengelolaan pertanaman dan pemupukan fosfor (P) dan kalium (K) bawang merah yang dilakukan petani di empat desa di Brebes. Pengumpulan data dilaksanakan melalui metode survei, wawancara, dan pengisian kuisioner kepada 14 petani responden, dan analisis kadar P dan K sampel tanah lahan petani responden. Hasil penelitian menunjukkan bahwa indeks pertanaman (IP) adalah 400-500% dengan pertanaman bawang merah tiga sampai empat kali dan satu kali pertanaman padi. Pemupukan P dan K berturut-turut berkisar 22–171 kg P2O5 ha-1 dan 22–213 kg K2O ha-1, sementara rekomendasi Distan Brebes berturut-turut adalah 54 kg P2O5 ha-1 dan 78 kg K2O ha-1. Pemupukan bervariasi ini tidak berkorelasi nyata dengan produksi, kecuali pemupukan K dengan produksi pada musim hujan yang berkorelasi nyata pada taraf 5% (n=14, r=0.532). Status P tanah sangat tinggi pada semua lokasi dan pada semua kedalaman (0 – 80 cm), sementara status K tanah lebih bervariasi, yaitu dari sedang sampai sangat tinggi.Kata kunci: akumulasi hara, ketersediaan hara, petani kecil, residu hara, status hara

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Subterranean termite, Macrotermes, play important role on plant nutritive cycles through disintegration and decomposition of organic matter processes. In the other hand, subterranean termite can cause wooden damage in the nature and human dormitory as well. Therefore, Macrotermes are potential pest and need to be controlled. Effective pest-control of subterranean termite can be made when their species status and distribution are well known. This research is aimed to identify the status of species and the dispersal of Macrotermes at their natural habitat in order to explore natural bio-resources richness and as an effort towards effective pest-control due to increasing risk of attack. Survey method was used termite samples were collected at four different locations which are defined by global positioning system (GPS). Nest classification is according to Meyer et al. (2003). The nest mapping is based on the elevations of their natural habitat in Gunung Halimun Salak National Park (900-1000 asl), and (600-700 asl), Yanlappa sanctuary (200-300 asl), and Ujung Kulon Nasional Park (0-100 asl). Phylogenetic relationships analysis showed that subterranean termite Macrotermes in the natural forest community are belongs to one big group Macrotermes gilvus Hagen. Based on nest size, the colony of Macrotermes can be classified into three different sizes: large, medium, and small nest. Large and medium nest can be found in large amount in Yanlappa sanctuary (15 and 23 colonies, respectively) and the majority of small nest occurred in Gunung Halimun Salak National Park at 900 asl (78 colonies). Temperature and humidity is the most environmental factor that can influence on termite and other factor is rain fall, soil structure, and plant vegetation. Keywords: Distribution, identify, Macrotermes gilvus Hagen, nest

Hubungan Karbon Organik Terlarut dengan Sifat Tanah pada Toposekuen di Taman Nasional Bukit Duabelas: The Relationship of Dissolved Organic Carbon with Soil Properties on Toposequence in the Bukit Duabelas National Park Syamsul Arifin; Arief Hartono; Kukuh Murtilaksono; Syaiful Anwar; Sunarti Sunarti; Yakov Kuztakov
Jurnal Ilmu Tanah dan Lingkungan Vol 19 No 2 (2017): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

The organic matter in the forest ecosystem that contributes to the organic horizon of soil profile decomposes to CO2. The DOC (dissolved organic carbon) leached to the mineral soil horizons could be decomposed, leached or adsorbed onto mineral surfaces. The effect of soil properties on the DOC dynamic has not been fully understood because of limited data. The objective of this research was to characterize the DOC in Bukit Duabelas National Park and reveal the effect of soil profile position in toposequence and soil properties to the DOC. Six soil profiles were made with different positions in toposequence (two soil profiles on each upper, middle, and lower slope). Lysimeters were installed horizontally (in AO, AB and B horizons and in each soil profile) and connected to a bottle collector that placed on the bottom of the soil profile. The soil samples were collected from each of the soil profiles, at the beginning of the research, while soil solutions were collected periodically. The results showed that the independent sample t-test revealed that fluxes of DOC of soil profile on the lower slope were different from that of soil profiles on the upper and middle slopes. The concentration, amount, and fluxes of DOC in soil profile on the lower slope were higher than those of soil profiles on the upper and the middle slopes. The independent sample t-test also revealed that fluxes of DOC of AO horizons were different from those of AB and B horizons. The concentration, amount, and fluxes of DOC of AO horizon were higher than those of AB and B horizons. The result of Pearson correlation showed positive correlations between DOC fluxes with organic-C, total-N, and Cation Exchange Capacity (CEC), but negative correlation with soil bulk density, pH, and Fe dithionite-citrate-bicarbonate (Fed) content. The results suggested that soil profile on the lower slopes on toposequence had a higher amount of DOC than that on other soil profiles above it. Horizon AO had a higher amount of DOC than that of AB and B horizons. The increase of organic-C, total N and CEC increased DOC. On the other hand the increase of soil bulk density, pH and Fed decreased DOC. Keywords: DOC, horizon, soil organic matter, toposequence

Karakterisasi Pelepasan Nitrat pada Andisol di Jawa Barat dan Jawa Tengah: Characterization of Nitrate Release on Andisols in West and Central Java Arief Hartono; Syaiful Anwar; Novianti Ruliana
Jurnal Ilmu Tanah dan Lingkungan Vol 21 No 1 (2019): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Andisol tersebar luas di Indonesia dengan luas total mencapai 5.4 juta ha. Tanah-tanah ini digunakan secara luas oleh petani sebagian besar untuk pertanian hortikultura dan perkebunan teh, dan sebagian kecil untuk peternakan. Karakteristik pola pelepasan anion nitrat sangat spesifik lokasi sehingga perlu diteliti lebih jauh sifat-sifat kimia tanah apa saja yang berpengaruh terhadap pola pelepasan nitrat pada Andisol di Jawa Barat dan Jawa Tengah. Tujuan dari penelitian ini adalah: (i) mengkarakterisasi sifat kimia Andisol, (ii) mengkarakterisasi pola pelepasan nitrat pada Andisol dengan sifat kimia yang berbeda, (iii) mendapatkan hubungan antara sifat-sifat kimia tanah dengan pola pelepasan nitrat pada Andisol di Jawa Barat dan Jawa Tengah. Percobaan pelepasan nitrat dilakukan dengan metode inkubasi. Jumlah nitrat yang terlepaskan dalam penelitian ini disimulasikan dengan menggunakan persamaan first order kinetic. Berdasarkan hasil analisis, sifat-sifat kimia tanah Andisol di Jawa Barat dan Jawa Tengah bervariasi. Pelepasan nitrat pada Andisol Lembang, Pangalengan, Sukamantri, dan Dieng secara umum semakin menurun dengan meningkatnya kedalaman tanah pada satu profil tanah dan semakin meningkat dengan meningkatnya waktu inkubasi. Hasil uji korelasi sederhana menunjukkan bahwa untuk nitrat maksimum yang dapat dilepaskan (N0) memiliki korelasi yang tidak nyata dengan sifat-sifat kimia tanah yang dianalisis. Hal ini menunjukkan bahwa nitrat sangat mobil di dalam tanah. Walaupun demikian N0 berkorelasi positif dengan C organik, N total, Fe-oksalat (Feo), Al-dithionite dan Fe-dithionite. Sebaliknya N0 berkorelasi negatif dengan Al-oksalat (Alo), dan Alo + ½ Feo. Untuk konstanta kecepatan pelepasan nitrat (k) berkorelasi negatif dengan semua sifat tanah tersebut kecuali dengan dengan Fe-dithionite yang mempunyai korelasi positif. Hasil ini menyimpulkan bahwa pelepasan nitrat pada Andisol punya kemungkinan meningkat dengan meningkatnya kadar C organik dan N total tanah akan tetapi menurun dengan meningkatnya Alo + ½ Feo. Alo + ½ Feo juga mempunyai kemungkinan menurunkan kecepatan pelepasan nitrat pada Andisol.

Karakteristik Kimia dan Fisika Tanah di Area Pertanaman Nanas dengan Perbedaan Tingkat Produksi: Soil Chemical and Physical Characteristics in Pineapple Plantation with Different Rate of Yield Rina Natalia; Syaiful Anwar; Atang Sutandi; Budi Nugroho; Priyo Cahyono
Jurnal Ilmu Tanah dan Lingkungan Vol 20 No 1 (2018): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Differences in productivity were observed in various land units on pineapple plantation in Central Lampung even with the same land and fertilization management. The nature of soil chemical and physical variability were thought to be the cause of these differences. The study was aimed to compare chemical and physical soil properties in land units with different pineapple productivity. Soil samples were taken from 6 units of land with low and 3 units of land with high productivity. The soil chemical properties measured include available P and K, potential P and K, total N, pH, organic C, exchangeable cations, and available micro nutrients. The soil physical properties determined include bulk density, soil texture, and penetration resistance. The data was analyzed using T-test and correlation. The T-test revealed that the high productivity soils were significantly lower in available P, potential P, total N, and available Zn compared to the productivity soils. Furthermore, the high productivity soils were significantly lower in bulk density and penetration resistances both vertically and horizontally. There were significantly negative correlations between pineapple yields with potential P, available Zn, bulk density, and penetration resistance both vertically and horizontally. Overall analyses indicating that the physical properties were more as productivity determinant, particularly bulk density and penetration resistance, compared to the chemical properties. The chemical properties were more as residual conditions after nutrient absorption process to support pineapple productivity. In order to increase the productivity, it is necessary to manage the soil to lower bulk density and penetration resistance.

Co-Authors - Sutanto - Universitas Bina Sarana Informatika, Frans Eduard Schaduw . Suwardi ., Al Amin ., Muhlis Abdul Bari Abdul Munif Abdul Rachim Abdullah Muksin Abdurrohman, Dede Ach. Robertul Huda Achmad Khomaidi Achmad Surya Adi Sustama Adi Haniefa Adi Herisasono Adi Rahman, Adi ADI YULANDI Adi, Anang Prasetia Adriani Darmawati Adyas, Dasmansyah Affan Chahyahusna Af’idzatuttama, Af’idzatuttama Aggraini, Atika Agung Karuniawan Agus Jatmiko Agus Salim Agus Setiawan Agustina, Yusnita Febriani Ahmad Fauzan Ahmad Hidayat ahmad yani Ahmadi, Asep Aisyah Ufairoh Rahmah Ajeng Ayu Lestari, Ajeng Ayu Ajir, Ikhtiar Cahya Akbar Hashemi R, Wildan Akhmad A. Amin Al Amin Albubaroq, Hikmat Zakky Alfusanah, Fadilatul Ali Haidir Amalia Wulannanda Amalia Zahroh Aminuyati Amiruddin, Faizul Ana, Era Serly Anas D. Susila Anas Dinurohman Susila Andrea Emma Pravitasari, Andrea Emma Andriansah, Zjulpi Ani Iryani Ania Citraresmini Annajmi, Nabila Annis Indah Larasati Apandi Apriyani, Hikma AR, Muhamad Habibullah ARFAIZAR, JANUARIANSYAH Arfani Labib Arif Surtono Arini Putriani Arini, Nindya Aritonang, Sovian Arkan, Muhammad Arman Maulana Asmoro, Novky Atanasius Priharyoto Bayuseno Atang Sutandi Atmari Atmari Audya Ayuning Tyas Aviantara, Dwindrata B. Ayrthon Bagaskara AYU NUR SHAWMI, AYU NUR Ayu, Putri Ayutia, Yolla Azizah, Adinda Putri Azizah, Fitri Alfian Azka, Millati Baba Barus Bachtiar, Nasri Baehaqi, B Baharudin Baharudin Baharudin Bahrul Amin Bakhtiar, Ikrima Farishani Bambang Hermanto Banatul Khoiriah Ulfa Basuki Sumawinata bawazir, Fuad Binatara, Aji Jaya Boedi Tjahjono Brantas Suharyo G Budi Handayani Budi Mulyanto Budi Nugroho Budi Nugroho Budi Nugroho Budi Prasetyo, Teguh Budiyono Budiyono Cecep Wahyudin Chairul Anwar Chairul Anwar Chairul Anwar Chairunnisa Dwi Putri Nasution Chelsea, Fiorentina Choirul Anwar Cilda Thesisa Ilmawan Contesa, Emelia Dadang . DADANG DADANG Dadang Dadang Damayanti, Afriya Darmono Taniwiryono Darwo Darwo Dasmansyah Adyas Deden Kurniawan Dedi Hudaedi Delia Annisya Chairunas Derizal Derizal Derizal, Derizal Desi Nadalia Desiana Desiana, Desiana Devi Wulandari Devita Sari, Ni Nengah Dhany Yuniati Dhoni Hanif Supriyadi Diah Tjahyandari Dian Andesta Bujuri Dodi Nandika Dodik Ridho Nurrochmat Donni Kis Apriyanto Duarte, Editha Praditya DWI ANDREAS SANTOSA Dwi Kartika Asih Hasibuan Dwi Putro Tejo Baskoro Dyah Tjahyandari Suryaningtyas Edi Arianto Effed Darta Hadi Eka Intan Kumala Putri Eka Sulistiawati Eko Prasetyo Eksa Rusdiyana Elham Elham Endang Widyastuti Eni Irfiani Eny Fuskhah Eny Fuskhah Erlangga, Ade Erlina Rahmayuni Erlina Rahmayuni, Erlina Erna Herlina Erni Yusnita Eryna Elfasari Rangkuti Eso Solihin Etsa Sandra Etty Riani Evi Mutiara Dewi, Evi Mutiara Fachrurozi, Hamzah Fahmy Ryadin Fahmy, Rahmi Fahmy, Rahmy Fahrizal Irawan, Fahrizal Fahrizal Kreshna Yudichandra Fajrin Pramana Putra Farhana, Maulina Farid Zaini Farida Farida Farida Yuliani Faridlotul Hasanah Fathorrahman Fathorrahman Fathurrohman, Asep Fatimah, Risa Nalwi Fauziah, Rosita Husnun Febiyanti, Herlina Febri Nur Pramudya Felix Wuryo Handoko Felix Wuryo Handono Feriansyah Fauzi Fernando B Siahaan Fernando B. Siahaan Fernando Siahaan Fernando Sitorus, Alberth Fintri Indriyani Firdini, Firdini Firmansyah, Naufal Fitri Yanti Fitriani, Dhea Fitriyani, Indri Hapsari Florentina Kusmiyati Florentina Kusmiyati Fuad, Mohammad Haddiel Fuadi Irsan Gasmi, Nur Muhammad Gerhat Sebastian Siregar Ghifari, Dimas Al Gilang Fauzi Dzikrillah Gilang Sukma Putra Gilang Sukma Putra Ginting, Muhammad Farhan Gracia Gabrienda Gunawan Djajakirana Guruh Prabowo Wirajati Gurum Ahmad Pauzi Hadi Susilo Arifin Hajira Hajira, Hajira Hakim Adil Hamzah Fachrurozi Hamzah, Zeze Zakaria Hanafiah, Luthfi Happy Widiastuti Haq, Andi Rafli Hardianti, Dwi Tiara Harianti, Mimien Hariyadi Hariyadi Hariyadi Hariyadi Hariyadi Hartono, Achdwiyanto Yudi Hartono, Arif Hasan, Nugroho Herlina, Erna Hernata, Novan Heru Bagus Pulunggono Herviyanti Herviyanti Hilal Haekal Humairoh Ratu Ayu Husni Mubarok Husni Mubarok Husni Mubarok I Gusti Bagus Wiksuana I Nyoman Sujana Ida Fiteriani Ida Hayati, Noor Idris Idris Idris Idris Ihlashul’amal, Muhammad Ikhwanudin Ikhwanudin Ilyas, Yasnimar Imam Syafe'i Iman Rusmana Imran Imran Indah Fajarini Sri Wahyuningrum, Indah Fajarini Sri Indrawati, Rosita Indri Hapsari Fitriyani Indriyani, Yohanna Anisa Indriyati, Lilik Tri Inni Nur Khalifah Irsal Las Irwan Hermanan Iryani, Ani ISKANDAR ZULKARNAEN SIREGAR Ismayanti, Rahmania Istahana, Istihana Istanjir, Akhmad Istihana Iswandi Anas Iswandi Anas J. Jamari Jaenal Abidin Jamilatul Qamariyah Jamili, M Joehari Jati, Kuat Waluyo Jibril, Muhamad Johan Edi Nepri Judiono Judiono Junaidi Junaidi K. Karno Kalilih, Rohianala Yayan Kamilla, Anggun Cahya Karno Karno Karno Karno Kartini Kartini Kramadibrata Kartono, Rano Kasim, Susilawati Kasmadi Kasmadi Kasmadi Kasmadi Kasturi, Rima Kesuma Wardani, Rama Wijaya Kesuma, Muhammad Ilham Jaya Khairina Khairul Anwar Kheyla Trinanda Agustina Khoiriyah, Ikfi Fikla Khoirunisa, Asni Khoirunnisa, Nur Syafira Khoirunnisa, Tasya Ramadhinta Kristanto, Budi Adi Kuat Puji Prayitno Kukuh Murtilaksono Kukuh Murtilaksono Kukuh Murtilaksono Kukuh Murtilaksono Kukuh Murtilaksono Kukuh Murtilaksono Kukuh Murtilaksono Kurnia Dewi Sasmita Kusmiaji, Adelia Lailan Syaufina Laksono, Teguh Lamura, M. Danny Pratama Latifah Zulfaa Lina Lathifah Nurazizah Lina Lathifah Nurazizah Linaci, Ahmad Novta Sebad Linda Agustina Linda Widia Sari Lisdyayanti, Novita Dwi Lisdyayanti, Novita Dwi Lisdyayanti Dwi Liyanto Liyanto Lubis, Abdillah Lukita, Mince M. Ihsan Dacholfany M. Syamsul Maarif MAIPA DIA PATI Maramis, Raul Redemtus Marinus Kristiadi Harun Martinus Tukiran Masri, Sylvia Masruroh Masyitah Tri Andari Matius Paundanan, Matius Maulana, Haris Maulani, Nail Izzatul Maulia A. Susanti Mausuli, Silma Miftahol Arifin MIFTAHOL ARIFIN, MIFTAHOL Miranda, Miranda Miskiyah, Siti Mochammad Adam Husein Moh Zulfajrin Moh Zulfajrin Moh Zulfajrin Moh Zulfajrin Moh. Farid Riady Moh. Kurdi Moh. Yani Mohamad Syamsul Ma’arif Mohammad Djaelani Muannif Ridwan Muchamad Hamdani Muchammad Hamdani Muhamad Iqbal Muhamad Jibril Muhammad Aqil Muhammad Fauzi Muhammad Hadi Maulidin Nugraha Muhammad Hendrizal Muhammad Imam Nugraha Muhammad Yusron Maulana El-Yunusi Muhlis Muhlis Muhlis Muhlis Muhlis Mujito Mujito Mujito, Mujito Mukarohmah, Ayun Hafifatul Muliana Mulyani Mulyani Munir, M Syahrul Mursal Azhari Lubis Mutia Oktarina Permai Yenny Muzzeki, Muzzeki Nabila Annajmi Nabila Hanifah Nabila, Siti Nadia Nuraniya Kamaluddin Nadya Ranialini Nampiah Sukarno Nanda Inka Fitri Narayana, Ramadhan Cakra Nardi Narendra, Sebastianus Aditya Narendra Nasution, Chairunnisa Dwi Putri Natalia Desy Djata Ndua Nazwa Rahmania Niken Subekti Ningtyas, Meita Surya Nizam Tambusai Nizam Tambusai Noor Fitriya Mirta Liana Novianti Ruliana Nugroho, Indra Nur Asiyah Nur Wahyunianti Dahri Nurdody Zakki Nurhayati Nurhayati Nurholis Nursadiyah, Eva Nurul Azizah NURUL AZIZAH Oktaviana, Ananda Oktofan, Niko Ilham Ongky Alexander P., Mohammad Gilang Ramadhan C. Pakri Fahmi Panggabean, Jeffri Urbanus Parjono Parjono Pedrason, Rodon Pertiwi, Annisa Dipa Prameswari, Mayang Arnindika Pratiwi, sulistya rini Priyanto Priyanto Priyo Cahyono Purwanto, Moh Yanuar Jarwadi Purwono Purwono, Purwono Puspa Dewi Putra, Anggi Yanuar Radita Putra, Calvin Anthony Putri Ayu Putri, Descenda Angelia Qonita R Djoko Andreas Navalino R. Djoko Soetrisno RAHAYU WIDYASTUTI Rahmadani, Melinia Rahman, Fathin Aulia Rahmania, Nazwa Rahmatika, Wardah Naila Rahutomo, Suroso Ramada, Edo Ramdan, Zulkifli Ratnasari, Wulan Hikmah Refita Rizki Rendy Anggriawan Rendy Anggriawan Retno Fuji Oktaviani Riadhotus Saadati Rian Hilmawan Riany Aulia Shabila Ridwan Ridwan Ridwan Rifardi Rifda El Fiah Rija Sudirja Rikky Triolin Saputra Rina Mardiana Rina Natalia Riry Magriaty Riry Magriaty Risdhianto, Agung Rivaldo, Terien Rizanto, Ronariyan Ilsyah Rizerius Eko Hadi Sancoko Rizerius Eko Hadisancoko Rizka Aisyah Hasibuan Rizki Ananda Rizko, Muhammad Rizky Agusriyanti Irna Robby Mochamad Taufik Royan Farurozi Rudy Muslimin Rulia Ervina Dewi Ryanda Catur Arhanudya Ryanuargo . S. Dharma Kesuma Safitri, Destalista Dewi Sahuddin Sahuddin Sakina, Rafika Sandra, Etsa Sanjaya, Yanuar Rizki Santoso, Dwi Andreas Sari, Indah Nur Bella Sari, Misalia Sari, Yunita Mahda Saripah, Mutiara Silvia Sarjito, Aris Sehtawarta Br Sitepu Selamet Riyadi Setiawan, Pradita Aldi Setiawati, Helis Ira Sham, Said Luthfil She Fira Azka Arifin Shella Oktaviana Shobri, Taufik Siahaan, Fernando Sianipar, JF. Sidabutar, Suhara Golan Sidiq, Alief Hafid Siswanto Siswanto Siswoyo Siswoyo Siti Hannah Padliyyah Siti Nurhasanah Siva Tania Soemardiono Soemardiono Solichah, Urip Jamiati Sri Hetty Susetyorini Sri Listiyowati Sri Mahendra Satria Wirawan Sri Maryati Sri Poernomo Sari Sri Poernomo Sari SRI RAHAYU Sriningsih Sriningsih, Sriningsih Subagya, Mahmud Subagyo, Wawan Hari Subhi Nur Ishaki Suciati, Fuzi Sudarman, Adriani Darmawati Sudibyo Sudibyo Sudirman Yahya Sudirman Yahya Sudrajat Suhesti, Pancaria Sukmadewi, Desak Ketut Tristiana Sularsih, Suci Sulistyowati, S Sunarti Sunarti Supiandi Sabiham Supriadi Surachman Surjaatmadja Surjono Hadi Sutjahjo Surjono Surjokusumo Susanto, Bambang Suselo Harjo Sutanto, - Swastanto, Yoedhi Syafira, Salsabila Syahminan Syahminan Syamsul Arifin Syamsul Arifin Syamsuri Ali Syaputra, Syahiena Maulana Syarifuddin, Kurniawan Firmuzi Syifa Adilla Zahra Syifa Fauziah Syva Fitriana Tania June TARUNI SRI PRAWAST MIEN KAOMINI ANY ARYANI DEDY DURYADI SOLIHIN Taufik Akbar Tengku Afrizal Tivianton, Tommy Andryan Tjahyandari, Diah Toruan, Tahan Samuel Lumban Totok Imam Santoso Tri As Shidiq Umi Afifah Umihijriyah Unsul Abrar Unsul Abrar Untung Sudadi Utaminingsih, Syakira Vina Amalia Hasanah W Handono, Felix Wahida Annisa Wahyudi, Widi Wahyumi Ekawanti Wasehudin Wasehudin Wasehudin Wasehudin, Wasehudin Wawan Wahyudi Weriantoni, Weriantoni Widiatmaka Widiyanto Widiyanto Widya Setya Ningrum Wijiindyah, Ayutha Wildan Yakov Kuztakov Yakov Kuzyakov Yansyah, M. Eko Juli Yasinta Rahmawati Yasnimar Ilyas Yayah Rukiah Yayu Sri Wahyuni Hamzah Yesni Malau Yetri Hasan Yiharodiyah, Lisa Yohanna Anisa Indriyani Yudhi Murfi Yudho Yuanto Yuli Yanti Yulia Fatima Bessing Yulia Sari, Anita Yulianti Keke Yulianti, Erikavitri Yumei Kang Yuniar, Dwi Candra Zahara Zeze Zakaria Hamzah Zeze Zakira Hamzah Zulkarnain, Mierna Zulkifli Ramdhan Zu’ama Anggun Larasati

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