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All Journal Agrikultura Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Jurnal Agroteknos Jurnal Teknologi Mineral dan Batubara Jurnal Teknologi Pertanian Andalas Soil REns Jurnal Agro Wiralodra JAGROS : Jurnal Agroteknologi dan Sains (Journal of Agrotechnology Science) Agro Tatanen Jurnal Teknologi Mineral dan Batubara
Rachmat Harryanto
Fakultas Pertanian, Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Public Health

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INOKULASI AZOTOBACTER DAN APLIKASI KOMPOS UNTUK BIOREMEDIASI TAILING TERKONTAMINASI MERKURI Reginawanti Hindersah; Gina Nurhabibah; Rachmat Harryanto
Jurnal Teknologi Mineral dan Batubara Vol 17 No 1 (2021): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2021
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol17.No1.2021.1142

Abstract

Kadar merkuri (Hg) yang tinggi pada tailing tambang emas adalah sumber pencemaran lingkungan termasuk lahan pertanian. Penurunan kadar Hg di tailing dengan metode bioremediasi adalah strategi yang efektif, murah dan mudah. Azotobacter adalah rizobakteri pemfiksasi nitrogen dan penghasil eksopolisakarida yang mengubah mobilitas logam berat serta memicu pertumbuhan tanaman dengan optimal jika terdapat bahan organik. Penelitian ini dilakukan untuk mengevaluasi pengaruh dosis bahan organik dan Azotobacter strain resisten Hg terhadap perubahan kadar Hg di tailing dan tanaman jagung. Percobaan rumah kaca dirancang dalam Rancangan Petak Terbagi dengan tiga ulangan. Petak utama adalah dosis bahan organik yang terdiri atas 22,5; 30 dan 37,5 g/polibeg. Anak petak adalah strain bakteri terdiri atas tanpa inokulan, Azotobacter indigen, A. chroococcum, dan konsorsium kedua bakteri. Hasil penelitian menunjukkan bahwa inokulasi Azotobacter meningkatkan tinggi dan bobot kering tanaman jagung umur 3 minggu. Aplikasi kompos kotoran sapi 30 g/polibeg disertai inokulasi A. chroococcum maupun konsorsium Azotobacter menurunkan kadar Hg tanah dan meningkatkan serapan Hg di tanaman. Penelitian ini menjelaskan bahwa inokulasi Azotobacter menginduksi serapan Hg oleh tanaman sehingga berpotensi digunakan untuk bioremediasi tailing terkontaminasi Hg dengan tanaman fitoakumulator.
KLASIFIKASI KESESUAIAN LAHAN KAKAO MENGGUNAKAN FAKTOR PEMBATAS MAKSIMUM DI KABUPATEN KOLAKA Syaf, Hasbullah; Arifin, Mahfud; Suriadikusumah, Abraham; Harryanto, Rachmat
Jurnal Agroteknos Vol 1, No 3 (2011)
Publisher : Jurnal Agroteknos

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Abstract

ABSTRACT The current implementation of land suitability classification of Cocoa is based on the national standard of growing plant. Therefore the implementation of the land use at the specific location was not acceptable. It is important to evaluate the land suitability  of  the  cocoa  growing  areas.  This  study  was  conducted  at  Kolaka  Regency Southeast Sulawesi Province. This research was performed using a survey method based on the observation unit. Which is consist of 93 observation units.   The climate, soil and environment observations were following the Soil and Agroclimate Research Centre ( PPTA, 1993); Department of Agriculture (DEPTAN, 1993 dan 2003) and the Indonesian Coffee and Cocoa  Research  Centre  (PPKKI,  2008).  The  analysis  of  land  suitability  is  base  on  the threshold factor using the mínimum. The results showed that the land suitability of the cocoa growing areas according to  PPTA dan DEPTAN (1993) were classification full into 76.34% marginal suitable (S3), 12.90% currently not suitable (N1) and 10,75% was permanently not suitable (N2). On the other had based on the DEPTAN (2003) the cocoa growing areas were 83.87% S3 and 16.13% not suitable (N). While according to the PPKKI  (2008) the S3 was 63.44% and the N was 36.56%. Key word: land suitability classification and cocoa
Pengaruh Dosis dan Frekuensi Pemberian Pupuk Tunggal (N,P,K) dan Pupuk Majemuk NPK Terhadap N-Total, P-tersedia dan K-dd Padi Sawah (Oryza sativa L.) pada Inceptisols Siswanto, Shantosa Yudha; Wianggadana, Rangga; Harryanto, Rachmat; Setiawan, Ade; Sonjaya Sule, Marenda Ishak
Soilrens Vol 22, No 2 (2024)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v22i2.61738

Abstract

The study was conducted to determine the effects of dosage and frequency of applying single fertilizers (N,P, K) and compound NPK fertilizers on total nitrogen (N-total) using lowland rice (Oryza sativa L.) grownin Inceptisols. The research was carried out in rice fields located in Ciparay, Jelekong Subdistrict, BaleendahDistrict, Bandung Regency. A Randomized Complete Block Design (RCBD) was employed, consisting of seventreatments with three replications: (1) Control, (2) Single NPK fertilizer (grade 123,75-36-50), Frequency3, (3) Compound NPK Pelangi fertilizer (grade 80-40-40), Frequency 3, (4) Single NPK fertilizer (grade 8040-40),Frequency 3, (5) Single NPK fertilizer (grade 123,75-36-50), Frequency 2, (6) Compound NPKPelangi fertilizer (grade 80-40-40), Frequency 2, and (7) Single NPK fertilizer (grade 80-40-40), Frequency2. The results indicated that, in general, fertilization applied twice yielded the highest N-total values.Meanwhile, fertilization applied three times resulted in higher available phosphorus (P-available) levels.However, differences in fertilization treatments did not significantly affect exchangeable potassium (K) inInceptisols.
Co-Authors Abraham Suriadikusumah Ade Setiawan Ade Setiawan Apong Sandrawati Apong Sandrawati Apong Sandrawati Daud Siliwangi Saribun Ganjar Herdiansyah Ganjar Herdiansyah Ganjar Herdiansyah, Ganjar Gina Nurhabibah Hasbullah Syaf Henly Yulina Henly Yulina Henly Yulina Henly Yulina Henly Yulina Henly Yulina, Henly Leony Agustine Mahfud Arifin Marenda Ishak Sonjaya Sule Novarina Darmawan Putri Reginawanti Hindersah Ridha Hudaya Rija Sudirja Rina Devnita Shantosa Yudha Siswanto Wianggadana, Rangga