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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Indonesian Journal of Geography Buletin Peternakan Jurnal Ilmu Pertanian Journal of Tropical Soils Sains Tanah Pembangunan Pedesaan Journal of Degraded and Mining Lands Management Jurnal Tanah dan Air Planta Tropika Jurnal Zeolit Indonesia Livestock and Animal Research SAINS TANAH - Journal of Soil Science and Agroclimatology Agrin : Jurnal Penelitian Pertanian Martabe : Jurnal Pengabdian Kepada Masyarakat jurnal Ilmu Pertanian (Agricultural Science) JURNAL ILMIAH AGRINECA
Eko Hanudin
Jurusan Ilmu Tanah, Fakultas Pertanian, Universitas Gadjah Mada, Jl. Flora, Bulaksumur, Depok, Sleman, Yogyakarta 55281, Indonesia, Telp./fax.: (0274) 563062
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The effect of a combination of nitrogen and phosphorus fertilization with bamboo biochar rate on the growth and productivity of rice Mahyudi, Mahyudi; Purwanto, Benito Heru; Hanudin, Eko
Jurnal Ilmu Pertanian Vol 9, No 3 (2024): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.75250

Abstract

The combination of fertilizer treatment with biochar has shown to be a sustainable and ecologically friendly method of increasing soil fertility and crop productivity. However, its combined impact on nutrient availability and rice yield is still unclear. This study aimed to investigate the effect of bamboo biochar produced by the Kontiki method in combination with nitrogen and phosphorus fertilization on nutrient availability in the soil and the productivity of rice. The treatment factors included the fertilizer combination factor (B) consisting of B1 (N + P fertilizer + Biochar), B2 (N fertilizer + Biochar), B3 (P fertilizer + Biochar), and B4 (Biochar + no fertilizer), and the biochar dose factor (F) comprising F0 (0 tons ha⁻¹), F1 (5 tons ha⁻¹), and F2 (10 tons ha⁻¹), resulting in 36 experimental plots with 12 treatment combinations. Measurement of ammonium and nitrate concentration in the soil started on the 15th day after planting, following the measurement of the growth of rice plant biomass with an interval of 15 days. The measurement of available P in the soil was started on day 45 after planting and continued until harvesting time with the same time intervals as the measurements of ammonium and nitrate. The study found that combining bamboo biochar treatment with nitrogen and phosphorus fertilizer greatly boosted the availability of nitrogen (ammonium and nitrate) and availability of P in the soil. Treatment combinations improved lowland rice yield (P < 0.05) by increasing plant height, number of tillers, dry weight of shoots and roots, grain weight per clump, 1000-grain weight, and grain yield.
The effect of a combination of nitrogen and phosphorus fertilization with bamboo biochar rate on the growth and productivity of rice Mahyudi, Mahyudi; Purwanto, Benito Heru; Hanudin, Eko
Jurnal Ilmu Pertanian Vol 9, No 3 (2024): December
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.75250

Abstract

The combination of fertilizer treatment with biochar has shown to be a sustainable and ecologically friendly method of increasing soil fertility and crop productivity. However, its combined impact on nutrient availability and rice yield is still unclear. This study aimed to investigate the effect of bamboo biochar produced by the Kontiki method in combination with nitrogen and phosphorus fertilization on nutrient availability in the soil and the productivity of rice. The treatment factors included the fertilizer combination factor (B) consisting of B1 (N + P fertilizer + Biochar), B2 (N fertilizer + Biochar), B3 (P fertilizer + Biochar), and B4 (Biochar + no fertilizer), and the biochar dose factor (F) comprising F0 (0 tons ha⁻¹), F1 (5 tons ha⁻¹), and F2 (10 tons ha⁻¹), resulting in 36 experimental plots with 12 treatment combinations. Measurement of ammonium and nitrate concentration in the soil started on the 15th day after planting, following the measurement of the growth of rice plant biomass with an interval of 15 days. The measurement of available P in the soil was started on day 45 after planting and continued until harvesting time with the same time intervals as the measurements of ammonium and nitrate. The study found that combining bamboo biochar treatment with nitrogen and phosphorus fertilizer greatly boosted the availability of nitrogen (ammonium and nitrate) and availability of P in the soil. Treatment combinations improved lowland rice yield (P < 0.05) by increasing plant height, number of tillers, dry weight of shoots and roots, grain weight per clump, 1000-grain weight, and grain yield.
Geochemical Weathering of Volcanic Materials at Southern Catena of Mount Merapi Aini, Lis Noer; Hanudin, Eko
Indonesian Journal of Geography Vol 57, No 1 (2025): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.95745

Abstract

Soil fertility is enhanced by eruptions of Mount Merapi, which deposits pyroclastic debris rich in weatherable primary minerals. Therefore, this study aimed to assess the geochemical weathering index of soils in the southern catena of Mount Merapi, an area affected by the 2010 eruption. Soil samples were collected to describe 4 geomorphic units, namely the higher, middle, lower, and foot slopes. X-ray fluorescence (X-RF) was conducted to determine total element content, and five weathering indexes (Weathering Index of Parker (WIP), Vogt's Residual Index (V), Chemical Index of Alteration (CIA), Chemical Index of Weathering (CIW), and Plagioclase Index of Alteration (PIA)) were calculated. The results show that aluminum (Al) was the most abundant oxide, followed by calcium (Ca), potassium (K), magnesium (Mg), and sodium (Na). Weathering indexes suggested moderate weathering (WIP > 100, V > 1) with a significant presence of fresh volcanic material (CIA, CIW, PIA between 50-100, closer to 50). Variations in each horizon signified the vertical and horizontal movement of mobile elements. The C horizon (deeper layer) had a higher WIP but lower values for the other indexes. In conclusion, geomorphological units influenced the distribution of fresh volcanic material, weathering products, and translocation of elements. Weathering index values reflected the ongoing release of nutrients from minerals. This information was crucial for developing nutrient management strategies in the Merapi region.Received: 2024-04-26 Revised: 2024-06-21 Accepted: 2025-02-19 Published: 2025-02-25
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).
Phosphate Adsorption Capacity of Allophane from Two Volcanic Mountains in Indonesia Airlangga, Tandaditya Ariefandra; Matsue, Naoto; Hanudin, Eko; Johan, Erni
JOURNAL OF TROPICAL SOILS Vol. 25 No. 1: January 2020
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2020.v25i1.39-46

Abstract

Allophane is known as clay mineral with high capacity of phosphate adsorption via ligand-exchange mechanism. This study aims to compare the phosphate adsorption characteristics by allophane from Mt. Merapi and Mt. Lawu in relation to its chemical and mineralogical properties. The results  of X-Ray Flourescence analysis shows that both allophane samples from Merapi and Lawu have low Si/Al ratio, i.e. 1.18 and 1.16, respectively. Infrared spectral characteristics of the allophane materials indicated that the main adsorption bands appeared at the range of 2700-3700 cm-1 (due to stretching vibration of all hydroxyl (OH) groups), 1400 – 1800 cm-1 (vibration of HOH deformation), and 650 - 1200 cm-1 (vibration between the Si-O-Al). Adsorption experiment of phosphate on allophane samples were conducted at initial adsorbate concentration of up to 2.0 mM and at pH 4.0 and 8.0. Phosphate adsorption capacity of allophane shows that both allophane from Merapi and Lawu are categorized as very high in adsorbing phosphate and fit well with the Langmuir adsorption equation. Phosphate adsorption increases with decreasing pH due to the positive charge sites such as Al-OH2+ in the allophane structure increase. Another reason is the negative charge of phosphate gradually decreases from -2 to -1 with decreasing pH, and the repulsive force between the negatively charged Si-O- in the allophane structure and phosphate anions decreases.
Leaching Characteristics of Udipsamment Ameliored by Mineral Soil and Adhesive Polymer Fibrianty, Fibrianty; Hanudin, Eko; Ma’as, Azwar
JOURNAL OF TROPICAL SOILS Vol. 27 No. 1: January 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i1.17-25

Abstract

Udipsamment  is  characterized  by  sand  fraction  > 95%,  loose,  and  very  high  leaching. This  study  aimed  to determine  the  effect  of  mineral  soil  ameliorants  and  adhesive  polymers  on  the character  of  nutrient leaching  in  Udipsamment.  The  leaching   study  in  lysimeters  used  a completely  randomized  design  with three  replications.  The  treatments  consist  of  bagasse  (B),  mineral  soil included  Inceptisol  (I)  and Vertisol  (V),  and adhesive  polymers included tapioca  1% and 2% (T1  and  T2),  tapioca  dregs  1%  and  2  %  (A1 and  A2),  Polyvinylalcohol  0.1%  and  0.2%  (P1  and  P2).  Combination  of  treatments  are  IB,  VB,  IBT1, IBT2,  VBT1,  VBT2,  IBA1,  IBA2, VBA1 ,  VBA2 , IBP1,  I BP2, VBP1,  and  VBP2.  Observations  were made  before  and  after  leaching.  The  research  showed  that  VBT2  increases moisture-holding  capacity. Amelioration improved the ability of  Udipsamment  to  hold  nutrients,  after leaching  for  six  months,  there was  a  decrease  in  organic  C,  total  N,  and  available  P  compared to before  leaching.  Amelioration increased the  soil  CEC,  even up  to  the  sixth  month  leaching,  the soil  CEC  showed  a  higher value  than  before  leaching.  The  amount  of  clay  fraction  was  relatively  uniform  between  the  surface  and  the  bottom of  the lysimeter,  indicating that   the adhesive   polymer  successfully  bonding  the  clay-sand  particles  and prevented clay leaching.
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.
PENGELOLAAN PETERNAKAN TERPADU PADA KELOMPOK PETERNAK KAMBING MUALAF DI KALIBAWANG KULONPROGO Noer Aini, Lis; Puji Dyah Anggraini, Meika Kurnia; Hanudin, Eko
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 6, No 1 (2023): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v6i1.28-35

Abstract

Kalibawang is one of the hilly areas in Kulonprogo Regency. Most of the people in this area are Muslim, although the number of followers of other religions is also growing. Part of the people in Kalibawang are converts, are a lower until middle class society. The existing economic limitations have made some of the converts formed a group of goat breeders with capital from donors. This goat breeder group has been running for about 1 year and has 6 members, with the number of goats increasing. The problem is the limited knowledge of the members of the farmer group for integrated goat farming system. The solutions offered are 1) providing  training on the manufacture of organic fertilizer from existing goat farm waste; 2) integrated goat farming practices. The results of the assistance carried out, before the training was carried out, all converts did not know how to make organic fertilizer and cultivate goats correctly. After the counseling and mentoring was carried out, farmers began to understand the integrated goat farming technique, and began to put it into practice, both in waste management and in the design of healthier cattle pens.
Respon Rumput Benggala (Panicum maximum L.) terhadap Gypsum dan Pupuk Kandang di Tanah Salin Purbajanti, Endang Dwi; Soetrisno, Djoko; Hanudin, Eko; Budhi, Subur Priyono Sasmito
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 1 (2010): 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 (431.401 KB) | DOI: 10.24831/jai.v38i1.1675

Abstract

The research was aim at studying the effect of application of gypsum and manure to growth, biomass yield, dry matter yield, dry matter content and crude protein of Benggala grass. This study used factorial design with nine replications. The first factor was manure dosages i.e. 0 and 20 ton ha-1. The second factor was gypsum dosages i.e. 0, 0.75, 1.5 and 3 ton ha-1. Variables to observe were relative growth rate (RGR), biomass yield, dry matter yield, dry matter content and crude protein. The application of 20 ton manure and 3 ton gypsum per hectare resulted the highest values of  RGR, biomass yield, dry matter yield, dry matter content and crude protein; they were 0.86 g day-1, 1039.4 g pot-1, 219.1 g pot-1, 20.9% and 8.1%, respectively. Response of RGR, biomass yield, dry matter yield, dry matter content and crude protein to gypsum application with 20 ton manure  ha-1 were linier.  Keywords :  benggala grass,  saline soil, gypsum, manure, nitrogen.
Co-Authors , Tamad Achmad Fatchul Aziez Airlangga, Tandaditya Ariefandra Angga Ade Sahfitra ARIFIN FAHMI Bambang Hendro Sunarminto Bambang Hendro Sunarminto Bambang Hendro sunarminto Bambang Triyatmo Benito Heru Purwanto Bostang Radjagukguk Cahyo Wulandari Dewi Ratna Nurhayati Didik Indradewa Djoko Soetrisno Eka Tarwaca Susila Putra Endang Dwi Purbajanti Endang Sulistyaningsih Fajarini, Permata Harty Noor Fibrianty, Fibrianty JAKA WIDADA Jauhari Syamsiyah Johan, Erni Kartikawati, Retno Kartikawati, Rina Kurniasih, Budiastuti Lis Noer Aini, Lis Noer Mahyudi Mahyudi, Mahyudi Matsue, Naoto Ma’as, Azwar Muhammad Rif’an Mulyono Mulyono Mulyono, Mulyono Nasrudin Noer Aini, Lis Prapto Yudhono Prapto Yudono Prasetiyanto, Lukas Priyo Priyono Suryanto Puji Dyah Anggraini, Meika Kurnia Putri Ratnasari R. Djoko Sutrisno Rajiman Rajiman Riyadi, Aldy Slamet Sari Widya Utami Sri Nuryani Hidayah Utami Subur Priyono Sasmito Budhi Supriyanto Notohadisuwarno Taryono, Taryono Tohari Tohari Wiratama, Ristiya Adi Y. Prapto, Y.