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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

Author-ID : 349949

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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PENGARUH KUALITAS BAHAN ORGANIK DAN KESUBURAN TANAH TERHADAP MINERALISASI NITROGEN DAN SERAPAN N OLEH TANAMAN UBIKAYU DI ULTISOL Andy Wijanarko; Benito Heru Purwanto; Shiddieq; Didik Indradewa
Perkebunan dan Lahan Tropika Vol 2, No 2 (2012)
Publisher : Fakultas Pertanian Universitas Tanjungpura

Bahan organik tanah sangat berpengaruh terhadap kesuburan tanah dan produksi biomassa tanaman. Kualitas bahan organik merupakan salah satu kunci dalam menjaga kelestarian tanah, tanaman dan lingkungan. Penelitian ini bertujuan untuk mempelajari pengaruh kualitas bahan organik dan kesuburan tanah terhadap mineralisasi N. Untuk mengestimasi parameter mineralisasi N (potensial mineralisasi N (N0), laju mineralisasi (k), energi aktivasi (Ea) dan N0k) dilakukan percobaan inkubasi di laboratorium, menggunakan persamaan first order. Sedangkan hubungan antara parameter mineralisasi dengan serapan hara N, dilakukan dengan melakukan percobaan pot di rumah kaca. Nilai N0, k dan Ea berturut-turut adalah 400 1156 mg kg-1, 0,0056 0,098 per minggu dan 10166 31478 J mol-1. Parameter mineralisasi N berkorelasi positif dengan N larut air, N-POM, Mikrobiomassa N, C-POM, Mikrobiomassa C, N-total dan nisbah C/N serta berkorelasi positif dengan berat kering tanaman, konsentrasi N dan serapan N tanaman ubikayu. Bahan organik yang mempunyai nisbah C:N rendah dan tanah yang mempunyai tingkat kesuburan yang lebih tinggi mempunyai mineralisasi N yang lebih tinggi, yang ditunjukkan dengan nilai N0, k dan N0.k yang lebih tinggi dibandingkan dengan bahan organik dengan nisbah C:N tinggi dan kesuburan tanah yang rendah. Kata kunci : kualitas bahan organik, kesuburan tanah, mineralisasi N, serapan N

The implication of microplastic contamination on chemical properties of Inceptisols in the horticultural production center of Banuhampu, Agam, West Sumatra, Indonesia Herviyanti, Herviyanti; Tanjung, Ellsya Tatalia Augustin Putri; Rezki, Dewi; Maulana, Amsar; Darusman, Darusman; Darfis, Irwan; Purwanto, Benito Heru; Prasetyo, Teguh Budi
Journal of Degraded and Mining Lands Management Vol. 12 No. 1 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.121.6545

The accumulation of microplastics (MPs) in agricultural land may threaten food security and farmers' health, which is of interest. This study examined the implication of MPs contamination/pollution on the chemical properties of an Inceptisol on different slopes in the horticultural production center of Banuhampu Subdistrict, Agam District, West Sumatra Province. The soil samples were determined by purposive random sampling with a quantitative survey method. Sample testing was carried out using a randomized completely block design with five treatments, i.e., 25-45% in forests, and 0-8%, 8-15%, 15-25%, and 25-45% in fields at a depth of 0-20 cm. The Inceptisol contaminated with MPs has the following characteristics: pH = 5.01, EC = 0.09 dS m-1, Eh = 92.97 mV, mineral = 68.81%, OM = 31.19%, CEC = 60.67 cmol(+) kg-1, C = 2.13%, N = 0.81%, P2O5 = 6.46 ppm, K = 0.48, Ca = 1.59 cmol(+) kg-1, Mg = 0.62 cmol(+) kg-1 , and SO4 = 98.98 ppm. The concentration of MPs on the Inceptisol was 438.33 particles kg-1 with filament shape, transparent color, and large size (1-5 mm) were the most commonly found. Polymer types included polyamide 6, polystyrene, and polyethylene. The effect of slope level on the surface change charger of Inceptisols contaminated with MPs was insignificant. However, the effect was significant in OC, total N, K-exch, and available S. The implications of microplastic contamination/pollution did not have a significant relationship with the chemical properties of the soil. However, it has a negative relationship to redox potential (Eh), mineral composition, and Ca-exch.

Weeding Frequencies Improve Soil Available Nitrogen in Organic Paddy Field Maimunah, Margi Asih; Kautsar, Valensi; Bimantara, Putu Oki; Kimani, Samuel Munyaka; Utami, Asih Indah; Sabri, Riza Kurnia; Tawaraya, Keitaro; Utami, Sri Nuryani Hidayah; Purwanto, Benito Heru; Cheng, Weiguo
PLANTA TROPIKA Vol 10, No 1 (2022)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v10i1.12707

Appropriate weeds control is needed against weeds constraints in field, especially the organic field. With the appropriate management, weeding would benefit the organic field not only in reducing weeds but also in increasing nitrogen (N) availability in organic rice fields. This research aims to observe soil available N changes affected by weeding frequencies in organic paddy fields. Treatments applied were five weeding frequencies (WF) such as 0 WF, 2 WF, 4 WF, 6 WF, and 8 WF, to study the effect of various weeding frequencies on soil total N and available N ( NH4+ and NO3–) in the organic rice field. The soil in the conventional field was analyzed as a comparison to organic field soil. The results showed that soil C and N contents are similar in all treatments. Meanwhile, 6 WF performed the highest soil NH4+ among organic plots (10.36 mg N kg–1) and 8 WF enhanced soil NO3– to the highest average among all plots (10.12 mg N kg–1). The treatment of 6 WF and 8 WF also maintain the increase of soil NH4+ to 51 days after transplanting (DAT), meanwhile 0 WF, 2 WF, and 4 WF decreased after 40 DAT. Water samples from fields inlet-outlet and river showed that NH4+ content found in water sample was higher than NO3–. We concluded that the more frequencies of weeding applied to organic fields potentially preserved soil inorganic N longer, which is very important in supporting rice growth.

Sawah Surjan Environmental Management for Food Crop Diversification in Kulon Progo of Yogyakarta, Indonesia Utami, Sri Nuryani Hidayah; Hermania, Pradysta Maya; Purwanto, Benito Heru
Journal of Smart Agriculture and Environmental Technology Vol. 1 No. 2 (2023): August 2023: Published, 2023-08-03
Publisher : Indonesian Soil Science Society of South Sumatra in Collaboration With Soil Science Department, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60105/josaet.2023.1.2.49-58

The utilization of wetlands as agricultural land requires specific processing techniques, which are relatively expensive and unaffordable for local farmers. The optimization of wetlands as agricultural land by local farmers is usually made by elevating a certain part using the adjacent soil material known as Surjan system. The land management using Surjan system increases the diversity of agricultural products and deals with inundation problems. However, its environmental impact has not been widely studied. The research was conducted by observing the land with Surjan system in Kulonprogo area to determine its characteristics. Interviews with farmers were conducted to determine land management techniques. Soil and gas emissions samples were taken based on the age of the crop. The characteristics of land with Surjan system and conventional rice field were then compared to determine the difference, and the implications of the two agricultural lands on the environment are discussed. Surjan system can increase land productivity, and it can be adopted easily by farmers in other areas with inundation problems. This system is a planting system consisting of mound (the raised beds) and tabukan (the sunken beds that remain inundated). The mound part can be planted with secondary crops, horticulture, and other dryland crops, while the tabukan part can be planted with rice and used for mina padi (rice-fish) farming system. Surjan system provides benefits for environmental management through the prevention of floods and eutrophication, as well as reduction of greenhouse gas emissions in the atmosphere. Land management through Surjan system affects soil pH, redox potential, and organic matter. Land with Surjan system produces lower methane gas emissions than conventional rice fields. It produces methane gas of 4.06 - 45.73 µg / m2 / minute, with soil pH, redox potential, and organic matter of 6.65 - 7.69, (-) 49 - 10 mV, and 1.28 - 3.59%, respectively

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

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.

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

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

[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

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.Â 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.Â The sample point depth were (cm) G.s2 : 25, G.s1 : 50, Int.s : 70,Â 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 : 220Â and M.d1 : 235 for deep peat respectively.Â 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 ofÂ Fe2+Â 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

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

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]

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 Arif Mustofa 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 Eko Hanudin Eko Hanudin Eko Hanudin Eko Hanudin Eko Hanudin Eko Hanudin Hanudin Endang Sulistyaningsih Eni MaftuÃ¢Â€Â™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 Karimah, Ramdhana 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 Maulana, Amsar Miranti Dian Pertiwi Mulyono Nitisapto MULYONO, NITISAPTO Nugroho Susetya Putra Nugroho Susetya Putra Nur Indah Mansyur Pambayun, Lintang Panjali Siwi Prapto Yudono Prapto Yudono Putra, Nugroho Susetya Putri Wulandari Putu Sudira Putu Sudira Putu Sudira R. Sapto Hendri Boedi Soesatyo Retno Kartikawati Rudi Hari Murti Rudi Hari Murti Sabri, Riza Kurnia Santika Sari Shiddieq Shiddieq, Djaâ€™far SIGIT SUPADMO ARIF 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 Susilaputra, Eka Tarwaca Syamsul Arifin Tangguh Prakoso Tanjung, Ellsya Tatalia Augustin Putri Teguh Budi Prasetyo Totok Gunawan 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

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