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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vegetalika Jurnal Ilmu Pertanian Perkebunan dan Lahan Tropika Journal of Tropical Soils Indonesian Journal of Agricultural Science Jurnal Ilmu-Ilmu Pertanian Indonesia Journal of Degraded and Mining Lands Management AGRIVITA, Journal of Agricultural Science agriTECH Planta Tropika SAINS TANAH - Journal of Soil Science and Agroclimatology Caraka Tani: Journal of Sustainable Agriculture Jurnal Penelitian Pertanian Tanaman Pangan Jurnal Irigasi jurnal Ilmu Pertanian (Agricultural Science) Asian Journal of Agriculture Soil REns AGROSCRIPT Journal of Applied Agricultural Sciences Jurnal Tanah dan Iklim Journal of Smart Agriculture and Environmental Technology AGRIC Agroscript: Journal of Applied Agricultural Sciences
Benito Heru Purwanto
Department Of Soil Science, Faculty Of Agriculture, Gadjah Mada University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Social Sciences Veterinary

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KADAR HARA DALAM JARINGAN TANAMAN SEBAGAI RESPON BUDIDAYA MONOKULTUR DAN HUBUNGANNYA DENGAN HASIL PADA TANAMAN TEBU Anna Kusumawati; Eko Hanudin; Benito Heru Purwanto; Makruf Nurudin
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 24 No 1 (2022)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.24.1.39-48

Abstract

[RESPONSE OF THE NUTRITION LEVELS OF SUGARCANE IN THREE ORDERS OF SOIL DUE TO SUGARCANE MONOCULTURE CULTIVATION]. Monoculture cultivation will have an influence not only on soil conditions but also on plant growth, nutrient levels in plant tissues, and yields. The purpose of this study was (1)  to determine the effect of monoculture sugarcane cultivation on nutrient levels of the roots, stalks, and leaves of sugarcane plants, (2) to determine the relationship between nutrient levels in sugarcane tissue and sugarcane productivity, and yield in three different soil orders. This research had two factors, namely soil order (Entisol, Inceptisol, and Vertisol) and sugarcane monoculture period (1–10, 11–20, and 21–30 years). The sugar cane used was the ratoon of two sugarcane. Parameters observed included nutrient levels of N, P, K, B, and Zn in roots, stalks, and leaves of sugarcane, and productivity of plants. Data analysis was performed with ANOVA at 5% level and regression correlation analysis. The results showed that the levels of N (leaves, stalks, and roots), levels of P (leaves, stalks, and roots), levels of leaf K, levels of B (leaves and roots), and level of Zn of sugarcane roots were influenced by the interaction between soil order and sugarcane monoculture period. Zn and K levels in sugarcane leaves had a strong and significant correlation with sugarcane productivity (r=0.778* and r=0.699*), while sugarcane yields had a strong and significant correlation with N content of root (r=0.752*). This result indicates that the soil order and the mass of sugarcane monoculture have an effect on the nutrient content in the plant and this nutrient content affects the productivity and yield. The availability of macro and micronutrients needs to be considered in monoculture sugarcane planting techniques to obtain optimal and sustainable sugarcane yields.
The Role of Peat Layers on Iron Dynamics in Peatlands Fahmi, Arifin; Radjagukguk, Bostang; Purwanto, Benito Heru; Hanudin, Eko
JOURNAL OF TROPICAL SOILS Vol. 15 No. 3: September 2010
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2010.v15i3.195-201

Abstract

The Role of Peat Layers on Iron Dynamics in Peatlands (A Fahmi, B Radjagukguk, BH Purwanto and E Hanudin): The research aimed to study the effect of peat thickness and humification stage of the peat material on Fe solubility at the peatlands with sulfidic material as substratum.  The research was conducted at three conditionals of ombrogen peatlands ie ; deep, moderate and shallow peat. Soil samples were collected by using peat borer according to interlayer (the border layer of peat and mineral layer) and conditional of soil horizons.  The sample point depth were (cm) G.s2 : 25, G.s1 : 50, Int.s : 70,  M.s1 : 90 and M.s2 : 100 for shallow peat, G.m2 : 47, G.m1 : 100, Int.m : 120 and M.m1 : 135 for moderate peat and G.d3 : 50, G.d2 : 150, G.d1 : 200, Int.d : 220  and M.d1 : 235 for deep peat respectively.  The results showed that most of Fe on the tested soils was found in organic forms. The peat layers above the sulfidic material decreased the Fe2+ solubility at peatlands. Fe2+ concentration in peat layer decreased with its increasing distance from sulfidic material. There was any other processes beside complexation and chelation of  Fe2+  by humic material and its processes was reduction of Fe3+ and this conditions was reflected in redox potential values (Eh).
The Influnece of Peat Layer on Hidrogen and Aluminium Concentration Originating from the Substratum Sulphidic Materials Fahmi, Arifin Fahmi; Radjagukguk, Bostang; Purwanto, Benito Heru; Hanudin, Eko Hanudin
JOURNAL OF TROPICAL SOILS Vol. 17 No. 3: September 2012
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2012.v17i3.197-202

Abstract

Much of peatland in Indonesia has sulphidic materials as substratum. Soil acidity and metal elements in peatlandmay originate from the sulphidic materials which occur underneath of the peat layer. Peat soil buffering capacity andchelating ability of the peat materials regulate the soil acidity and metal solubility in the peatland. The study wasaimed to examine the influence of peat thickness and land hydrological conditions on the concentrations ofexchangeable aluminium (Al) and hidrogen (H) in the peatland. The study was carried out on peaty acid sulphatesoil, deep peat, moderate peat and shallow peat. Exchangeable Al and H were observed in the wet season, transitionfrom wet to dry season and dry season. The results showed that exchangeables of Al and H were mainly originatedfrom sulphidic material which were occured underneath of the peat layer. Peat layer had an important role on thesolubility of Al and H in the peatland. Peat thickness had influence on exchangeable-Al and H, 50 cm of the peatthickness (shallow peat) was the critical for peat function to reduce the Al and H solubility in the peatland. Hydrologicalcondition factor did not influence on the solubility of Al and H.Keywords: Aluminium; hydrogen; peatland; sulphidic materials[How to Cite: Fahmi A, B Radjagukguk, B Heru Purwanto and E Hanudin. 2012. The Influnece of Peat Layer on Hidrogen and Aluminium Concentration Originating from the Substratum Sulphidic Materials. J Trop Soils, 17 (3): 197-202. doi: 10.5400/jts.2012.17.3.197][Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.3.197]
Interaction of Peat Soil and Sulphidic Material Substratum: Role of Peat Layer and Groundwater Level Fluctuations on Phosphorus Concentration Fahmi, Arifin; Radjagukguk, Bostang; Purwanto, Benito Heru
JOURNAL OF TROPICAL SOILS Vol. 19 No. 3: September 2014
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2014.v19i3.171-179

Abstract

Phosphorus (P) often becomes limiting factor for plants growth. Phosphorus geochemistry in peatland soil is associated with the presence of peat layer and groundwater level fluctuations. The research was conducted to study the role of peat layer and groundwater level fluctuations on P concentration in peatland. The research was conducted on deep, moderate and shallow peat with sulphidic material as substratum, peaty acid sulphate soil, and potential acid sulphate soil. While P concentration was observed in wet season, in transition from wet to dry season, and in dry season. Soil samples were collected by using peat borer according to interlayer and soil horizon. The results showed that peat layer might act as the main source of P in peatland with sulphidic material substratum. The upper peat layer on sulphidic material caused by groundwater level fluctuations had no directly effect on P concentration in the peat layers. Increased of P concentration in the lowest sulphidic layer might relate to redox reaction of iron in the sulphidic layer and precipitation process. Phosphorus concentration in peatland with sulphidic material as substratum was not influenced by peat thickness. However, depletion or disappearance of peat layer decreased P concentration in soil solution. Disappearance of peat layer means loss of a natural source of P for peatland with sulphidic material as substratum, therefore peat layer must be kept in order to maintain of peatlands. [How to Cite: Arifin F, B Radjagukguk and BH Purwanto. 2014. Interaction of Peat Soil and Sulphidic Material Substratum: Role of Peat Layer and Groundwater Level Fluctuations on Phosphorus Concentration. J Trop Soils 19: 171-179. Doi: 10.5400/jts.2014.19.3.171]
Kelarutan Fosfat dan Ferro pada Tanah Sulfat Masam yang Diberi Bahan Organik Jerami Padi Fahmi, Arifin; Radjagukguk, Bostang; Purwanto, Benito Heru
JOURNAL OF TROPICAL SOILS Vol. 14 No. 2: May 2009
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2009.v14i2.119-125

Abstract

Phosphate and Ferrous Solubilty on Acid Sulphate Soils Treated with Rice Straw (A. Fahmi, B. Radjagukguk, and B. H. Purwanto): The objective of this research was to investigate the effect of application of organic matter from rice straw (RS) on phosphate and Fe2+  solubility in the acid sulphate soils.  The research was conducted in the glass house consisting of the three treatment factors using the completely randomized design with three replication.  The first factor was soil condition : continuous application of  RS and without application of RS during the last 5 years.  The second factor was fresh application of RS ; with application and without application, whereas the third factor was phosphate application consisting 3 rates of SP – 36 fertilizers (0.5; 1,0 and 1.5 of application dossage). The result showed the three factors interaction had a significant influence on soil pH at 2 weeks after planting, whilst   interaction between RS application and soil condition had a significant influence on soil pH, available phosphate at 4, 6 and 8 weeks after planting.  The interaction between RS application and phosphate fertilizers rate had a significant influence on soil pH 4 weeks after planting, and on available phosphate at 8 weeks after planting.  The main effect of RS application was significant on exchangeable Fe and soil pH at all observations periods.
Sifat Fisik, Kimia dan FTIR Spektrofotometri Gambut Hidrofobik Kalimantan Tengah Utami, Sri Nuryani Hidayah; Maas, Azwar; Radjagukguk, Bostang; Purwanto, Benito Heru
JOURNAL OF TROPICAL SOILS Vol. 14 No. 2: May 2009
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2009.v14i2.159-166

Abstract

Nature on Soil Phisical, Chemical and Ftir Spectrophotometry of Hydrophobic Peat From Central Kalimantan (S.N.H. Utami, A. Maas, B. Radjagukguk, and B.H. Purwanto): Peat soils naturally have hydrophilic or water-loving character with highly capable of exchanging the cations and cycling the nutrients from the vegetations. This water-loving character is altered to water-repellent character in hydrophobic peat soils. This research was aimed to observe deeply the functional bunch carrier of hydrophobic and hydrophilic peat soils as shown by FTIR spectra in relation with inherent chemical and physical properties of the soils. Five peat soils consisted of two native and artificial hydrophobic peat soils and one sample of hydrophilic peat soils were studied. Artificial hydrophobic peat soils were yielded by oven-drying the native hydrophobic peat soils at 50 oC for 10 hours. FTIR spectra can distinguish the functional bunch carrier of hydrophobic and hydrophilic peat soils. FTIR spectra of hydrophobic peat soils showed degradation of hydrophilic bunch carrier (¾OH and ¾COOH) and increase of the hydrophobic bunch carrier (tying aromatic from esther and ether). Chemical analysis  of the hydrophobic peat soils also indicated the decrease of ¾OH and ¾COOH content, decrease of CEC , soil total acidity and soil moisture content.
The Leaching of Iron and Loss of Phosphate in Acid Sulphate Soil Due to Rice Straw and Phosphate Fertilizer Application Fahmi, Arifin; Radjagukguk, Bostang; Purwanto, Benito Heru
JOURNAL OF TROPICAL SOILS Vol. 17 No. 1: Januari 2012
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2012.v17i1.19-24

Abstract

Low phosphorus (P) availability and high iron (Fe) concentration are the dominant characteristics of acid sulphate soils (ASS).  Optimum agricultural management practices are required to leach the excess Fe2+  and to prevent or minimize loss of P from the soil in order to obtain conditions favorable for rice growth. The aim of this experiment was to study the effect of organic matter (OM) application in the form of rice straw (RS) on leaching of Fe and loss of P in an acid sulphate soil. The experiment was conducted in the glasshouse consisting of three treatment factors utilizing the completely randomized design with three replications. The first factor was soil condition consisting of continuous application of RS and without RS during the past five years. The second factor was application of fresh RS consisting of fresh RS application and without fresh RS application, whereas the third factor was P application consisting of three rates of SP-36 fertilizer (0.5, 1.0 and 1.5 times of the recommended rate). The results showed that RS application was effective in preventing P loss from the soil at 6 weeks after planting (WAP) and decreased the pH of leachate at all observations time but it increased Fe2+ concentration in leachate (0.07-0.42% Fe2+ in the soil were leached or 2-5 folds higher than without RS application).
Analysis of factors affecting differences in potassium buffering capacity in several soil orders Fajarini, Permata Harty Noor; Hanudin, Eko; Purwanto, Benito Heru
Jurnal Ilmu Pertanian Vol 10, No 2 (2025): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.108285

Abstract

Each soil order has different reactivity to potassium ion retention capacity, especially potassium buffering capacity. These differences are related to soil characteristics, including clay mineral content and type, cation exchange capacity, and soil texture class. This study compared the potassium buffering capacity (PBCk) of Andisols, Alfisols, Inceptisols, and Vertisols. The PBCk experiment reacted 2.5 grams of air-dried soil (passing a 0.5 mm sieve) and 25 ml of KCl solution with a series of concentrations of 0, 25, 50, 75, 125, 150, 175, 200, 225, and 250 ppm. Then, it was shaken for 24 hours to reach equilibrium conditions. The next day, the solution was centrifuged to obtain a clear solution. The remaining K content in the equilibrium solution was measured using a flame photometer. The amount of K read was calculated to obtain the Q/I factor and PBCk value from the gapon equation. The Q/I relationship was used to estimate PBCk values for each soil order with changes in K in the solution or Q (∆K) as the X axis and the intensity of K or I (CRk) as the Y axis. Then, the K intensity data were connected to the PBCk results to determine the buffer capacity of the four soil orders. Vertisols showed the highest PBCk (1.099 cmol kg-1/mol L-1)0.5, followed by Andisols, Alfisols, and Inceptisols. The determining factors include clay minerals in the form of smectite (2:1), high CEC value, and soil texture dominated by clay.
Analysis of factors affecting differences in potassium buffering capacity in several soil orders Fajarini, Permata Harty Noor; Hanudin, Eko; Purwanto, Benito Heru
Jurnal Ilmu Pertanian Vol 10, No 2 (2025): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.108285

Abstract

Each soil order has different reactivity to potassium ion retention capacity, especially potassium buffering capacity. These differences are related to soil characteristics, including clay mineral content and type, cation exchange capacity, and soil texture class. This study compared the potassium buffering capacity (PBCk) of Andisols, Alfisols, Inceptisols, and Vertisols. The PBCk experiment reacted 2.5 grams of air-dried soil (passing a 0.5 mm sieve) and 25 ml of KCl solution with a series of concentrations of 0, 25, 50, 75, 125, 150, 175, 200, 225, and 250 ppm. Then, it was shaken for 24 hours to reach equilibrium conditions. The next day, the solution was centrifuged to obtain a clear solution. The remaining K content in the equilibrium solution was measured using a flame photometer. The amount of K read was calculated to obtain the Q/I factor and PBCk value from the gapon equation. The Q/I relationship was used to estimate PBCk values for each soil order with changes in K in the solution or Q (∆K) as the X axis and the intensity of K or I (CRk) as the Y axis. Then, the K intensity data were connected to the PBCk results to determine the buffer capacity of the four soil orders. Vertisols showed the highest PBCk (1.099 cmol kg-1/mol L-1)0.5, followed by Andisols, Alfisols, and Inceptisols. The determining factors include clay minerals in the form of smectite (2:1), high CEC value, and soil texture dominated by clay.
Efektivitas Amelioran pada Lahan Gambut Terdegradasi untuk Meningkatkan Pertumbuhan dan Serapan NPK Tanaman Jagung Manis (Zea mays L. var. saccharata) Maftu’ah, Eni; Maas, Azwar; Syukur, Abdul; Purwanto, Benito Heru
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 41 No. 1 (2013): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.732 KB) | DOI: 10.24831/jai.v41i1.7071

Abstract

This study was aimed to determine the effectiveness of several of ameliorant formulas to increase plant growthand NPK uptake on sweet corn (Zea mays L. var. saccharata) on degraded peatlands. The research was conducted in thegreenhouse of Balittra during May to July 2011. Sweet corn was planted in pot with soil taken from previously burnt peatin Kalampangan, Palangkaraya. The treatment consisted of two factors, i.e., combination of ameliorant (A1=80% chicken manure + 20% dolomite, A2=80% agricultural weeds + 20% dolomite, A3=80% mineral soil (Spodosol) + 20% dolomite,A4=20% chicken manure + 20% agricultural weeds + 20% Eleocharis dulcis + 20% mineral soil + 20% dolomite, andA5=19% chicken manure + 71.5% mineral soil + 9.5% dolomite) and application rates at 5, 10, 15, 20 and 25 ton ha-1, arranged in a randomized complete block design, with 3 replications. The results showed that ameliorants and application rates affected growth and NPK uptake of sweet corn. Application of 20 ton ameliorant (80% chicken manure + 20% dolomite) ha-1 produced the highest dry weight of root and shoot, and NPK uptake.Keywords: ameliorants, degraded peatland, nitrogen, phosphate, potassium
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Syukur Adileksana, Cahyo Aji, Krishna Amalia Tetrani Sakya Andy Wijanarko Andy Wijanarko Anna Kusumawati Aridinasty Maritasari ARIFIN FAHMI Arifin Fahmi Arifin Fahmi Arifin Fahmi Arifin Fahmi Fahmi Azwar Ma'as Azwar Maas Azwar Maas Azwar Maas Azwar Maas Azwar Ma’as Azwar Ma’as Bambang Hendro Sunarminto Bambang Hendro Sunarminto Bambang Hendro Sunarmito BASUKI BASUKI Bayu Dwi Apri Nugroho Bimantara, Putu Oki Bostang Radjagukguk Bostang Radjagukguk Bostang Radjagukguk Bostang Radjagukguk Bostang Radjagukguk Bostang Radjagukguk Cahyo Wulandari Cahyono Agus Christoporus Sudradjat Widiarso Darfis, Irwan Darusman Darusman Dewi Hs, Endang Sri Dian Syafitri Ompusunggu Didik Indradewa Didik Indradewa Dina Wahyu Trisnawati Djaka Marwasta Eka Tarwaca Susila Putra Eka Tarwaca Susila Putra Eka Tarwaca Susilaputra Eko Hanudin Eko Hanudin Eko Hanudin Eko Hanudin Eko Hanudin Eko Hanudin Hanudin Endang Sulistyaningsih Eni Maftu’ah Eni Maftu’ah Eny Faridah Erni Romansyah Fahmi, Arifin Fahmi Fajarini, Permata Harty Noor Hanudin, Eko Hanudin Heri Wibowo Hermania, Pradysta Maya Herviyanti Herviyanti Husen, Edi Ilmiah , Haviah Hafidhotul Imas Masithoh Devangsari, Imas Masithoh Indradewa, Didik Kartikawati, Retno Keitaro Tawaraya Kimani, Samuel Munyaka Kusumawardani, Patria Novita Lilian Rizkie Maas, Azwar Maftukhah, Rizki Maftu’ah, Eni Mahyudi Mahyudi, Mahyudi Maimunah, Margi Asih Makruf Nurudin Makruf Nurudin Margi Asih Maimunah Maulana, Amsar Miranti Dian Pertiwi Mulyono Nitisapto MULYONO, NITISAPTO Nugroho Susetya Putra Nugroho Susetya Putra Nur Indah Mansyur Prapto Yudono Prapto Yudono Prapto Yudono Putra, Nugroho Susetya Putri Wulandari Putu Sudira Putu Sudira Putu Sudira R. Sapto Hendri Boedi Soesatyo Ramdhana Karimah Retno Kartikawati Rudi Hari Murti Rudi Hari Murti Sabri, Riza Kurnia Santika Sari Shiddieq Shiddieq, Dja’far SIGIT SUPADMO ARIF Sri Dewi HS, Endang Sri Hartati Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami Sri Nuryani Hidayah Utami Sri Redjeki Stephen Harper Suci Handayani Sukristiyonubowo, Sukristiyonubowo Supriyanto Notohadisuwarno Syamsul Arifin Tangguh Prakoso Tanjung, Ellsya Tatalia Augustin Putri Teguh Budi Prasetyo Totok Gunawan Toyip Toyip Toyip Toyip, Toyip Tri Mulya Hartati Utami, Asih Indah Valensi Kautsar, Valensi Vira Kusuma Dewi Weiguo Cheng, Weiguo Wijanarko, Andy Wiji Safitri Wijoyo, Rachmanto Bambang Wiratama, Ristiya Adi Yoga Yuniadi Yuli Lestari Zalfa Amelia