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

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Respons Pemberian dan Penetapan Status Hara Si pada Tanaman Padi Mirawanty Amin; Budi Nugroho; . Suwarno; Dyah Tjahyandari Suryaningtyas
Jurnal Ilmu Pertanian Indonesia Vol. 24 No. 1 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (352.674 KB) | DOI: 10.18343/jipi.24.1.32

Abstract

The use of silica fertilizer still has been included in cultivation technology: however, nutrient status for paddy soil is rarely reported in Indonesia. It is necessary to carry out a research on the determination of nutrient status and the influence of silica fertilizer on rice production. The aims of this research are to investigate the effect trass on soil chemical properties, discover of silica fertilizer on rice production and determine the nutrient status of Si by Cate Nelson and Contiunous Curves. The results showed that the effect of trass has a significant on soil chemical properties such as pH H2O and available Si. The nutrient status of Si was estimated by using several different extractants namely H2O; CaCl2; Ammonium Acetate pH 4.8; and Acetate Buffer pH 4 gives a critical limit value of 13, 17, 34, and 37 mg kg-1, equivalent to 28 mg kg-1, 36 mg kg-1, 73 mg kg-1, and 79 mg kg-1 SiO2, respectively. Meanwhile, the Si availability in the medium class based on Continuous Curves Method extracted by H2O; 0.01 M CaCl2; NH4OAc pH 4.8; and Na-acetate pH 4 were 18-34, 33-41, 44-79, and 42-81 mg SiO2 kg-1, espectively. Burned trass with dose of 10 g kg-1 gives the highest rice production of 44.19 g pot-1 equivalent to 7.07 ton ha-1.
Spesiasi Aluminium Terlarut dan Sifat Kimia Ultisol yang Diameliorasi dengan Dolomit dan Lignit-Teraktivasi Fahmi Arief Rahman; Budi Nugroho; Atang Sutandi; Untung Sudadi
Jurnal Ilmu Pertanian Indonesia Vol. 26 No. 1 (2021): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.26.1.42

Abstract

Phytotoxicity of soil aluminum (Al), both directly to the plant growth as well as indirectly through the increase of soil potential acidity, is closely related to the occurrence of various soil soluble-Al species. Amongst them, Al3+ and monomeric-Al species are the primary causes of Al phytotoxicity in soils with high Al content. This study was aimed to evaluate the effects of soil amelioration with dolomite and base-activated lignite (BAL) on changes in soluble-Al species and other soil chemical properties, and vegetative growth of soybean (Glycine max Merr) on Ultisol of Jasinga (Al-dd 16,03 cmol(+)/kg). A green house experiment was conducted by applying a Completely Randomized Design with dolomite and BAL amelioration as the treatments, each with three levels of repectively 0, 1, 1,5 x exchangeable-Al and 0, 2,5, 5 tons BAL ha-1, and three replications. The ameliorants were incubated at field capacity of soil moisture content for one week before planting soybean for one month. Soil soluble-Al speciation was carried out using colorimetric aluminon method to determine concentrations of total soluble-Al, monomeric-Al, and polymeric-Al species. Monomeric-Al were further speciated into inorganic monomeric-Al and organic monomeric-Al species. The results revealed that only dolomite amelioration that significantly increased soil pH-H2O, pH-KCl, Ca- dd, Na-dd, and decreased exchangeable-Al concentration, except for those of all soluble-Al species that only showed a decreasing trend. Soil exchangeable-Al that was negatively and significantly correlated with soybean measure parameters were plant height, root length, total roots and shoots wet and dry weights, as well as Ca concentration. These results indicated that soil Al phytotoxicity evaluation could be relied on the result of routine analysis on soil exchangeable-Al concentration. Keywords: exchangeable-Al, inorganic monomeric-Al, organic monomeric-Al, polymeric-Al
Dinamika Fraksi Fosfor dan Sifat Kimia Tanah Sawah Terkait Indeks Pertanaman Padi Sawah dan Praktik Pengairan: Dynamics of Phosphorus Fractions and Chemical Properties of Paddy Soils as related to Paddy Rice Cropping Index and Irrigation Practices Untung Sudadi; Laode Muhamad Asdiq Hamsin Ramadhan; Budi Nugroho; Arief Hartono
Jurnal Ilmu Tanah dan Lingkungan Vol 19 No 1 (2017): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (508.711 KB) | DOI: 10.29244/jitl.19.1.19-25

Abstract

Dinamika fraksi-fraksi P dan sifat kimia lainnya pada tanah sawah terkait dengan indeks pertanaman padi sawah (IP) dan kadar air tanah pada kondisi lapang (KAL). Penelitian eksploratif ini bertujuan mengevaluasi pengaruh IP berbeda yang direpresentasikan oleh dosis ameliorasi dan pemupukan serta KAL sebagai representasi praktik pengairan yang diaplikasikan oleh petani pada tanah sawah penelitian terhadap dinamika fraksi P, sifat kimia tanah lainnya dan produksi padi sawah. Contoh tanah komposit diambil pada lahan sawah yang sedang dibudidayakan petani dengan IP 100%, 200% dan 300% pada periode 7, 9, 11 dan 13 minggu setelah penggenangan awal. Fraksionasi P dilakukan untuk memperoleh fraksi PH2O, PNaHCO3-inorganik (Pi), PNaHCO3-organik (Po), PNaOH-Pi, PNaOH-Po dan PHCl tanah. Nilai KAL pada keempat waktu pengambilan contoh tanah pada IP 100% < IP 200% ≈ IP 300%. Sifat-sifat kimia dan fraksi-fraksi Po pada IP 100% cenderung menurun, sedangkan fraksi-fraksi Pi cenderung meningkat dengan peningkatan KAL. Dinamika fraksi-fraksi P tanah pada ketiga IP terutama ditentukan oleh Corg. Peningkatan Corg tanah menurunkan kadar Pi pada IP 100% dan Po pada IP 200%, tetapi meningkatkan Pi pada IP 300%. Penurunan dosis P2O5 dan peningkatan dosis jerami menurunkan Eh tanah. Faktor yang paling berpengaruh terhadap produksi padi sawah adalah KAL. Kata kunci : Pupuk P, jerami padi, kadar air lapang tanah, fraksi P tanah
Uji Kelarutan Si Tersedia pada Trass Bakar dan Non Bakar: Experiment of Silica Solubility Availabilityon Fuel and Non Fuel Trass Mirawanty Amin; Budi Nugroho; Dyah Tjahyandari Suryaningtyas
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (226.583 KB) | DOI: 10.29244/jitl.21.1.13-15

Abstract

This research was conducted to determine the available Si between burned trass and unburned trass, also to determine the best formula to be used as silica fertilizer. This research was conducted at the Laboratory of Soil Chemistry and Fertility, Department of Soil Science and Land Resources, Faculty of Agriculture, IPB University. The experimental design was the split-plot with the main plot consisted of burned trass and unburned trass, and the subplot consisted of combination dosage of trass and CaCO3, those were 100% trass, 83.33% trass + 16.67 CaCO3, 66.67.% trass + 33.33% CaCO3, each treatment was replicated three times, resulting in 18 experiment units. The result showed that the burned trass showed the highest available Si compared to the unburned trass. The combination of 83% trass + 17% CaCO3 showed the highest available Si of those were 120.02 ppm, 72.67 ppm and 53.43 ppm, respectively with extractant of ammonium acetate pH 4.8, 0.5 M HCl and H2O. Keywords:
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (264.335 KB) | DOI: 10.29244/jitl.20.1.13-18

Abstract

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.
Substitusi Sebagian Pupuk Kimia dengan Pupuk Organik Hayati pada Jagung (Zea mays): Partly Substitution of Chemical Fertilizer with Bio-organic Fertilizer on Maize (Zea mays) Syah Deva Ammurabi; Iswandi Anas; Budi Nugroho
Jurnal Ilmu Tanah dan Lingkungan Vol 22 No 1 (2020): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.22.1.10-15

Abstract

High amount of chemical fertilizer application simultanously caused soil degradation and environmental pollution. Bio-organic fertilizer application increases nutrient availability, improve soil properties, promote plant growth and increase yield. This study aims to understand effects of chemical fertilizer substitution with bio-organic fertilizer application on growth, uptake of N, P, K, and agronomic efficiency of maize in vegetative phase. Pot experiment was conducted at IPB Cikabayan Experimental Station, Dramaga, Bogor. Laboratory analysis was done at Department of Soil Science Laboratory, Faculty of Agriculture, Bogor Agricultural University (IPB). Randomized Block Design with single factor was used in this experiment. The treatments were: Control, POH (bio-organic fertilizer only), POH + 50% (NPK), POH + 100% (NPK), 50% (NPK) , and 100% (NPK). Bisma maize variety was used as plant indicator. Five weeks after transplanting, the biomass (shoot and roots) biomass ware harvested. NPK uptake analysis was performed to shoot samples. Results showed that bio-organic fertilizer application reduced the rate of chemical fertilizer by 50% and increase N, P, and K uptake. Combination between bio-organic fetilizer and 50% chemical fertilizer had the highest agronomic efficiency. Bio-organic fertilizer substitute 50% chemical fertilizer of maize.
Dinamika Pelepasan Nitrogen Empat Jenis Pupuk Urea Pada Kondisi Tanah Tergenang: Dynamics of Nitrogen Release by Four Types of Urea in Flooded Conditions Arief Hartono; Budi Nugroho; Desi Nadalia; Afifah Ramadhani
Jurnal Ilmu Tanah dan Lingkungan Vol 23 No 2 (2021): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.23.2.66-71

Abstract

Pupuk urea merupakan sumber hara nitrogen (N) yang paling banyak digunakan di Indonesia, termasuk pada lahan sawah. Urea merupakan pupuk N yang larut air sehingga penggunaan urea di sawah perlu dikaji dalam hubungannya dengan pelepasan pupuk. Di dalam penelitian ini digunakan urea dengan formulasi berbeda yaitu pupuk urea Kujang dan Pupuk Sriwijaya (Pusri) yang merupakan urea konvensional dan urea prill dan granul yang merupakan urea modifikasi yang mengandung formaldehida masing-masing 0.10 dan 0.50%. Tujuan penelitian ini adalah untuk mengevaluasi pelepasan N dari tipe urea konvensional dan urea yang diberi formaldehida pada kondisi tanah tergenang. Metode penelitian yang digunakan adalah inkubasi dan pencucian. Inkubasi dilakukan selama 7, 14, 28, 45, 60, dan 90 hari serta dilakukan pencucian pada setiap akhir masa inkubasi. Hasil pencucian ditetapkan kandungan amonium dan nitrat. Hasil penelitian menunjukkan bahwa pelepasan N dalam bentuk amonium dan nitrat antar perlakuan pupuk urea tidak berbeda nyata. Hasil total N tercuci menunjukkan nilai paling tinggi diperoleh oleh urea granul sebesar 78.0 mg tabung-1, kemudian disusul oleh urea prill 75.2 mg tabung-1, urea kujang sebesar 71.5 mg tabung-1, dan urea pusri sebesar 68.4 mg tabung-1. Berdasarkan hasil persamaan first order kinetic, diperoleh nilai pelepasan maksimum dan konstanta kecepatan. Nilai pelepasan maksimum tertinggi dimiliki oleh urea granul sebesar 94.6 mg tabung-1, kemudian urea prill sebesar 88.3 mg tabung-1, urea Pusri sebesar 82.3 mg tabung-1, dan urea Kujang sebesar 79.2 mg tabung-1. Sementara untuk nilai konstanta kecepatan, konstanta kecepatan tertinggi diperoleh pada urea kujang sebesar 0.0349 hari-1, kemudian dilanjutkan oleh urea prill dan pusri sebesar 0.0256 hari-1, dan urea granul sebesar 0.0253 hari-1. Hasil penelitian menunjukkan bahwa urea yang diperlakukan dengan formaldehida terutama dalam bentuk granul cenderung memiliki kemampuan untuk memperlambat proses pelepasan N yang ditunjukkan dengan nilai konstanta kecepatan pelepasan N yang paling rendah.
Study of Root Exudate Organic Acids and Microbial Population in the Rhizosphere of Oil Palm Seedling . Anandyawati; Enok Sumarsih; Budi Nugroho; Rahayu Widyastuti
JOURNAL OF TROPICAL SOILS Vol 22, No 1: January 2017
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2017.v22i1.29-36

Abstract

Mutual interaction between plants and microbes occured in the rhizosphere is expected to increase productivity of crops or soil fertility for agriculture. Plants excrete root exudates to attract microbes, and then microbes obtain habitat and food supply from plants and can fulfill the nutrient requirements through assisted enzymatic activity.  The objective of the research was to study the types and amounts of root exudate organic acids, microbial population, and the relationship between root exudate organic acids and microbial population in the rhizosphere of oil palm seedlings. The study was conducted in a greenhouse using a planting medium of sterile quartz sand. The study was conducted using two factorials completely randomized design with three replications. The first factor was oil palm seedling age (control / no oil palm seed, 1, 3, 6, 9 and 12 months-old of oil palm seedlings) and the second factor was the periods of seedling growth (45, 90, 135 and 180 days), so in total there were 72 experimental units. The result of High Pressure Liquid Chromatography (HPLC) analysis revealed that four kinds of organic acids were observed in the rhizosphere of oil palm seedlings, with the highest concentration were: acetic acid (1.66 ppm), citric acid (0.157 ppm), malic acid (2.061 ppm) and oxalic acid (0.675) ppm. The highest total population of microbes, fungi, Azotobacter, phosphate solubilizing bacteria (PSB) and phosphate solubilizing fungi (PSF) were 19.38 × 106 cfu g-1 soil, 3.28 × 104 cfu g-1 soil, 12.09 × 105 cfu g-1 soil, 8.39 × 104 cfu g-1 soil and 1.15 × 104 cfu g-1 soil, respectively. There are positive correlations between root exudate organic acids and total microbes, fungi, Azotobacter, PSB and PSF are.Keywords: microbes, organic acids, rhizosphere, root exudates
The Changes of P-fractions and Solubility of Phosphate Rock in Ultisol Treated by Organic Matter and Phosphate Rock Sri Djuniwati; Budi Nugroho; Heru Bagus Pulunggono
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.v17i3.203-210

Abstract

Phosphorus (P) is one of the essential elements for plant, however, its availability is mostly very low in acid soils. It is well documented that application of phosphate rock and organic matter are able to change the level of availability of P-form in acid soils.  The objective of the research were to evaluate the changes of P-fractions ( resin-P, NaHCO3-Pi, and NaHCO3-Po) and phosphate rock dissolution which were induced by application of organic matter (Imperata cylindrica, Pueraria javanica, dan Colopogonium mucunoides) and phosphate rock in Utisol Lampung.  The experiment was designed in a completely randomized design with three factors and three replications.  The first factor was the types of organic matter (I. cylindrica, P. javanica, and C. mucunoides), the second factor was the rate of organic matter (0, 2.5, and 5%), and the third factor was the rate of phosphate rock (0, 40, and 80 mg P kg-1).  The results showed that in the  rate of 0 and 1% organic matter, the type of organic matter did not affect P-fraction of NaHCO3-Pi, but in the rate of 2.5 and 5%,  NaHCO3-Pi due to application of  P. javanica, and C. mucunoides higher than due to application of  I. cylindrica.  However, the increasing rate of organic matter increased NaHCO3-Pi. Then, P-fraction of Resin-Pi was affected by the type of organic matter, the rate of  organic matter, and the rate of phosphate rock, respectively. P-fraction of resin-Pi due to application of P.  javanica, and C. mucunoides was higher than due to application of  I. cylindrica, but the effect of  P. javanica, and C. mucunoides was not different.  Increasing the rate of organic matter and phosphate rock increased P-fraction of resin-Pi and NaHCO3-Pi, but P-fraction of NaHCO3-Po was not affected by all treatments.  Meanwhile, dissolution of phosphate rock was affected by the kind of organic matter and soil reaction.  In the rate of 5% organic matter, dissolution of  phosphate rock by application of                                     I. cylindrica (70%) was higher than P. javanica (26.6%), and C.  mucunoides (33.5%), but in the rate of 1%, the effect of I. cylindrica , P. javanica, and C. mucunoides were not different.Keywords: C. mucunoides; I. cylindrica; P. javanica; phosphate rock; P-fractions[How to Cite: Djuniwati S, B Nugroho, and HB Pulunggono. 2012. The Changes of P-fractions and Solubility of Phosphate Rock in Ultisol Treated by Organic Matter and Phosphate Rock. J Trop Soils, 17: 203-210. doi: 10.5400/jts.2012.17.3.203][Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.3.203]
Estimation of the Potential Carbon Emission from Acrotelmic and Catotelmic Peats Siti Nurzakiah; Supiandi Sabiham; Budi Nugroho; Dedi Nursyamsi
JOURNAL OF TROPICAL SOILS Vol 19, No 2: May 2014
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2014.v19i2.81-89

Abstract

Agricultural development on peatland in Indonesia has been constrained by the presence of environment issues in relation to the release of greenhouse gases (GHGs) particularly carbon dioxide (CO2) and methane (CH4) to the atmosphere. This study was aimed to predict the potential carbon emission based on carbon stocks in acrotelmic and catotelmic peats with the reference of groundwater level of peatland.  The results showed that groundwater levels have played an important  role  in  carbon  release, which  has  close  relationship  with  water  regime  of  the upper  layer  of  peats  that influenced by oxidative and reductive conditions of the land.  From the layer that having groundwater level fluctuations during the period from rainy to dry season (acrotelmic peat), the emissions were mostly dominated by CO2 release, while from permanent reductive-layer (catotelmic peat) was not detected.  The decrease of groundwater level from -49.6 to -109 cm has clearly influenced carbon emission.  From each decreasing 1.0 cm groundwater level, CO2 emission measured during the period of February - October 2013 was calculated to yield about 0.37 Mg ha-1 yr-1.Keywords: Acrotelmic and catotelmic peat, carbon emission, groundwater level [How to Cite: Siti N, S Sabiham, B Nugroho and Di Nursyamsi. 2014. Estimation of the Potential Carbon Emission from Acrotelmic and Catotelmic Peats. J Trop Soils 19(2): 91-99. Doi: 10.5400/jts.2014.19.2.91]