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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Microbiology Indonesia Journal of Tropical Soils Journal of Degraded and Mining Lands Management Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) SAINS TANAH - Journal of Soil Science and Agroclimatology Caraka Tani: Journal of Sustainable Agriculture Dinamika Pertanian Berita Biologi

Basuki Sumawinata

Departemen Ilmu Tanah Dan Sumberdaya Lahan, Fakultas Pertanian, Institut Pertanian Bogor, Kampus IPB Dramaga, Bogor, 16680, Indonesia

Author-ID : 392221

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Medicine & Pharmacology

Published : 11 Documents Claim Missing Document

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Exploration of lignocellulolytic microbes in oil palm rhizosphere on peat soils and their respiration activities Happy Widiastuti; Siswanto; Saeful Anwar; Supiandi Sabiham; Husni Mubarok; Darmono Taniwiryono; Basuki Sumawinata; Heru B. Pulunggono
Microbiology Indonesia Vol. 15 No. 1 (2021): March 2021
Publisher : Indonesian Society for microbiology

Microbial respiration in peatlands plays a role in contributing CO2 emissions. Studies of microbial exploration and respiration on peat soils in oil palm plantations have not been widely reported. This study aims to explore lignocellulolytic microbes found in peat soils in compared with mineral soils planted with 12-year-old oil palm. Exploration is done by growing the samples on the specific medium of each group of microbial functions. In the next stage, the culture obtained was analysed the respiration activity based on the oxidation of peroxidase catalysis using a chromogen substrate (tetramethylbenzidine) and measured using spectrophotometry at a wavelength of 450 nm. The results showed that both in mineral and peat planted with oil palm in a depths of 0-20 cm were found lignolytic fungi with a population of 17 x 102. Similar results were also found in peat with fern vegetation but at a depth of 20-40 cm. Lignolytic bacteria (methylene blue degradation) can be found on peat soils planted with oil palm at a depth of 0-60 cm and the population increases with increasing depth. This bacterium is also found on peat soils with fern vegetation and mineral soils planted with palm. At a depth of 0-20 cm the population of lignolytic bacteria in non-oil palm peat is highest. Cellulolytic bacteria were isolated at a depth of 0-60 cm. Cellulolytic bacterial populations were highest in oil palm peat at all depths compared to other samples. Respiration analysis of several dominant isolates showed fairly high variation between microbial function groups and within the same function group. The lignolytic microbial group degrading methylene blue showed high respiration activity and varies greatly (0.19-1.85 MER). While the respiration activity of cellulolytic bacteria ranged from 0.45 to 0.62 MER.

komposisi jenis dan struktur hutan hujan tropika dataran rendah di taman nasional danau sentarum, kalimantan barat Cecep Kusmana; Bambang Hero Saharjo; Basuki Sumawinata; . Onrizal; Tsuyoshi Kato
Jurnal Ilmu Pertanian Indonesia Vol. 14 No. 3 (2009): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1412.797 KB)

The objective of this research was to obtain information on species composition and structure of lowland tropical rain forest in Sentarum lake National Park, West Kalimantan. The research was carried out from 26 to 31 December 2003 and from 20 January to 5 February 2004 on the foot slope of Semujan Hill in Sentarum lake National Park. To carry out the research, 10 sample units {SU'S) with size of 10 m x 10 m each, were placed, based on systematic sampling with random start scheme, with distance of 10 m between each SU. On each SU, trees with diameter~ 2 em were identified and diameter {DBH) and height were recorded. Eighty four {84) tree species were found in a 0.1 ha SU, consisting of 32 families, dominated by 16 species of Dipterocarpaceae, followed by 9 species of Guttiferae and 5 species of Melastomataceae. Tree density decreased exponentially with increasing the diameter of trees.

HUBUNGAN KARAKTERISTIK LAHAN DENGAN PRODUKTIVITAS TBS (Studi Kasus pada PT. Perkebunan Nusantara VIII Cimulang, Bogor) Komarsa Ganda Sasmita; Basuki Sumawinata; Sry Nurmala
Jurnal Ilmu Tanah dan Lingkungan Vol 11 No 1 (2009): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Oil palm (Elaeis guineensis Jacq) is an important crop for Indonesia as one of non fuel export commodities. Development, improvement of quality and productivity of oil palm is influenced by a lot of factors, among others are land characteristics. This research was aimed to know the relationship between oil palm productivity and physical land characteristic including soil, slope and the crop age. The results of this research were expected to be useful to improve oil palm productivity and the oil palm plantation development.This research was done within the site of PT. Perkebunan Nusantara VIII at Cimulang, Bogor. In this research, analyzing correlation between productivity of blocks that have homogenous land characteristic with physical land characteristic parameter including soil and slope. Block with homogenous land characteristic was block which 75% or more of it’s area had similar characteristics. These blocks were determined by overlying block map, slope map and soil map. The result show that were 20 homogenous blocks out of all the 38 blocks of the site the PT. Perkebunan Nusantara VIII at Cimulang. Average production was depend on crop age. At study areas, the highest average fresh fruit bunch production obtained from plants 5 years, which was equal to 22.87 tons acre-1 year-1 and the lowest average fresh fruit bunch production obtained from plants 3 years, which was equal to 0.66 tons acre-1 year-1. Based on soil, the highest average fresh fruit bunch production obtained from the SPT 11 (Typic Eutrudox), which was equal to 12.54 tons/acre/year and the lowest average fresh fruit bunch production obtained from SPT 1 (Oxic Dystropept), which was equal to 9.51 tons/acre/year. Based on slope class, the highest average fresh fruit bunch production obtained from block with slope class B (8-15%), which was equal to 12.54 tons/acre/year, and the lowest average production was equal to 9.98 tons/acre/year from the slope class.

Seasonal litter contribution to total peat respiration from drained tropical peat under mature oil palm plantation Heru Bagus Pulunggono; Siswanto Siswanto; Husni Mubarok; Happy Widiastuti; Nizam Tambusai; Moh Zulfajrin; Syaiful Anwar; Darmono Taniwiryono; Basuki Sumawinata; Supiandi Sabiham
Journal of Degraded and Mining Lands Management Vol 9, No 2 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.092.3247

The amount of CO2 gas emissions in drained peatland for oil palm cultivation has been widely reported. However, the research addressing the contribution of litter respiration to peat and total respiration and its relationship with several environmental factors is found rare. The aim of this study was to measure peat and heterogeneous litter respiration of drained tropical peat in one year at a distance of 2.25 m and 4.50 m from mature oil palm trees of 14 years using the chamber method (Licor Li-830). In addition to CO2 efflux, we measured other environmental parameters, including peat temperature (10 cm depth), air temperature, groundwater table (GWL), and rainfall. Results showed that the mean total peat respiration (Rt) was 12.06 g CO2 m-2day-1, which consisted of 68% (8.24 g CO2 m-2day-1) peat (Rp) and root (Rr) respiration and 32% (3.84 g CO2 m-2day-1) of litter respiration (Rl) at the distance of 2.25 m from the palm tree. Meanwhile, at a farther distance, the Rt was 12.49 g CO2m-2day-1, the contribution of Rp was 56% (6.78 g CO2 m-2day-1), and Rl was higher than the closest distance (46%; 5.71 g CO2 m-2day-1). Thus, one-year observation resulting the mean Rt and Rr was 0.07–0.08 Mg CO2 ha-1 day-1, while Rl was 0.04–0.06 Mg CO2 ha-1 day-1. The means of Rt, Rp, and Rl were significantly different in the dry season than those recorded in the rainy season. The climatic-related variable such as peat and air temperature were chiefly governing respiration in peat under mature oil palm plantation, whereas the importance of other variables present at particular conditions. This paper provides valuable information concerning respiration in peat, especially for litter contribution and its relationship with environmental factors in peatland, contributing to global CO2 emission.

Dinamika fluks CO2 pada perkebunan kelapa sawit di lahan gambut M. Joehari Jamili; Budi Nugroho; Basuki Sumawinata; Syaiful Anwar
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 11 No. 3 (2021): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.11.3.430-441

CO2 flux from peat soil planted with oil palm is temporally and spatially dynamic, which is related to various environmental factors. This flux can be partitioned into fluxes from oil palm root respiration, litter decomposition, and peat material decomposition. The aim of this study was to determine the temporal and spatial dynamics of CO2 fluxes, the contribution of oil palm roots respiration, the contribution of litter decomposition, and the relation between flux and environmental factors in oil palm plantations on peatland. Measurements of CO2 flux using an infrared gas analyzer (IRGA) were carried out in harvesting path and inter raw of oil palm plantation, and nearby bushland. Flux measurements were repeated every three to four days for almost five months. Results showed the dynamics of the CO2 fluxes temporally and spatially. Temporally, CO2 flux in oil palm plantation and bushland ranged from 2.9 – 11.1 and 0.5 – 6.4 g C-CO2 m2/day, respectively. Spatially, the flux in oil palm plantation and bushland ranged from 4.8 – 8.8 and 2.7 – 3.4 g C-CO2 m2/day, respectively. The contribution of oil palm roots respiration and litter decomposition were 48.4 and 5.8%, respectively. These results confirm that plant roots respiration plays an important role in the release of carbon from the soil surface.

Characterization of Humic Substance Extracted from Andisols, Spodosols, Peat, and Lignite Eka Rahmi; Suwardi Suwardi; Basuki Sumawinata
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 15, No 1 (2018): June
Publisher : Universitas Sebelas Maret

Soil and other materials with high C-organic content are potential natural sources of humic substances. Until now the differences in the characteristics of such humic substances that are extracted from different sources have not been widely studied. Thus, this study was aimed to characterize humic substances extracted from andisols, spodosols, peat, and lignite. The highest C-organic (48.8%) and N (7.6%) were obtained from peat and spodosols, respectively. The andisols humic substance produced the highest total acidity (6.52 cmol kg-1). Humic substance extracted from spodosols was a mostly aliphatic group and phenolate –OH, while that of andisols and lignite contained more aromatic group and phenolate –OH, whereas the humic substance from peat was a predominantly aliphatic group and –COOH. The surface morphology of the humic substances observed using SEM showed varying densities and shapes due to differences in their respective degree of decomposition and the formation process involved. There has been significant interest in investigating the different characteristics of the humic substance. The type humic substances are important to be known considering of their positive effects on soil fertility and plant growth and development.

Assessing N2O Emissions from Tropical Crop Cultivation in Mineral and Peatland Soils: A Review Suwardi Suwardi; Darmawan Darmawan; Gunawan Djajakirana; Basuki Sumawinata; Nourma Al Viandari
Caraka Tani: Journal of Sustainable Agriculture Vol 38, No 2 (2023): October
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v38i2.75235

Nitrous oxide (N2O) emissions from agricultural activities contribute significantly to global warming. Understanding the factors influencing N2O emissions is crucial for developing effective mitigation strategies. This review assesses N2O emissions from various crops cultivated in tropical mineral and peatland soils, providing insights into the impact of land use, fertilization practices and rainfall on N2O fluxes. Field measurements of N2O fluxes were conducted in agricultural fields growing corn, peanuts, and cassava in Bogor Regency, West Java Province, as well as in peatland areas with Acacia plantations and natural primary forests in Bengkalis Regency, Riau Province. The study assesses the total N2O fluxes for each crop and land type, revealing significant variations in N2O emissions among different crops and land uses. Peatland areas exhibit higher emissions compared to mineral soils, emphasizing the need for targeted mitigation measures in these ecosystems. The findings highlight the importance of considering the type and age of land use when evaluating N2O emissions. Land management practices, such as fertilizer use and soil disturbance, emerge as critical factors affecting N2O emissions. Improper fertilizer application and excessive soil disturbance can lead to increased N2O emissions, underscoring the necessity for careful N fertilizer management and conservation tillage techniques.

RESPON TANAMAN CAISIM TERHADAP PEMBERIAN KOMPOS TANDAN KOSONG KELAPA SAWIT DIPERKAYA ABU BOILER Eliartati Eliartati; Iskandar Iskandar; Basuki Sumawinata
DINAMIKA PERTANIAN Vol. 30 No. 2 (2015): Jurnal Dinamika Pertanian Edisi Agustus 2015
Publisher : UIR Press

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This research was aimed to study the response of mustard to oil palm empty fruit bunch (EFB) compost enriched boiler ash application. Each of EFB compost produced by opened method (K1) and by closed method (K2) were treated with four levels of boiler ash doses (A0 = 0%, A1 = 5%, A2 = 10%, and A3 = 15%). Both of materials are mixed and incubated for 2 weeks. Then boiler ash-enriched EFB compost were mixed with soil (compost: 20% and soil: 80% by volume) and used as medium to grow mustard in green house experiment. The experiment was designed in completely randomized design with 9 treatments and 3 replications. The treatments were comprise of control, K1A0, K1A1, K1A2, K1A3, K2A0, K2A1, K2A2 and K2A3. The results showed that EFB compost enriched boiler ash increased growth, yield and N, P, K, Ca, and Mg content of mustard. The yield of mustard increased about 173.5 – 226.5% for K1 and 279 – 290% for K2 compared to control (68 g/plot).

CO2 Flux from Tropical Land Uses on Andisol in West Java, Indonesia Hendri, Jon; Sumawinata, Basuki; Baskoro, Dwi Putro Tejo
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.v19i3.121-130

This study measured CO2 flux by segregating effect of root respiration and organic matter decomposition by microbes. The study involved a mineral soil containing high organic matter (Andisols), in the tropic devoted to different land uses i.e. natural forest, tea plantation, and horticultural farm CO2 emission from those land uses were compared to from peatland. Observed CO2 fluxes came out in the following order: bare plot Â 7.32, tea plantation Â 10.22, horticultural farm Â 15.60, and natural forest Â 15.62 Mg C-CO2 ha-1 yr-1. While, root respiration accounted for substantial proportions: tea plantation Â 28%, horticultural farm Â 53%, and natural forest Â 53%. Soil temperature demonstrated a significant positive correlation with the CO2 flux, except in the natural forest. On the other hand, water-filled pore spaces displayed varying correlation with site CO2 flux: a negative relationship in both bare plot and tea plantation, appreciably positive in the horticultural farm, and weakly related in the natural forest. Soil respiration and C-organic content appeared to be strongly correlated; the rate of soil respiration increased with higher C-organic content. In field, CO2 flux from organic matter decomposition in Andisols, Latosols, and peatland ranged from 5.35-13.22 Mg C-CO2 ha-1 yr-1, with root respiration contributing most of the flux, which was, in turn, influenced by type vegetation, humidity and soil temperature.Keywords: CO2 flux; decomposition; horticultural farm; natural forest; organic matter; tea plantation [How to Cite: Jon H, Suwardi, B Sumawinata and DPT Baskoro. 2014. CO2 Flux from Tropical Land Uses on Andisol in West Java, Indonesia. J Trop Soils 19: 121-130. Doi: 10.5400/jts.2014.19.3.121]Â Â Â Â

Kelarutan Nikel Pada Campuran Tanah Berbahan Induk Ultrabasa dengan Gambut pada Kondisi Jenuh dan Tidak Jenuh Air Sumawinata, Basuki; Djajakirana, Gunawan; Simbolon, David Ricardo
Jurnal Ilmu Tanah dan Lingkungan Vol 25 No 1 (2023): 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.25.1.25-29

Gambut tropik dengan bobot isi yang rendah berdampak pada berkurangnya kemampuan tanah gambut dalam menopang tanaman. Untuk meningkatkan bobot isi gambut maka dilakukan pencampuran tanah mineral dengan tanah gambut. Namun sumber tanah mineral yang dekat ke lahan gambut adalah tanah berbahan induk ultrabasa dengan kandungan logam Nikel (Ni) yang tinggi mencapai 5000 ppm. Karakter lahan gambut yang asam dan berada pada topografi yang rendah menjadi dugaan akan meningkatkan kelarutan Ni saat terjadi banjir. Oleh karena itu pencampuran bahan-bahan tanah dan perlakuan air bertujuan untuk mengukur kelarutan Ni pada kesetimbangan pH setelah pencampuran dan diekstrak menggunakan larutan NH4OAc 1.0 N pH 7.0; 4.8; 4.2, HCl 1.0 N; 0.1 N, dan H2SO4 1.0 N. Kesetimbangan pH setelah pencampuran bahan tanah berada pada pH 5.2 – 6.1 yang berarti kelarutan Ni ditunjukan oleh hasil ekstrak larutan NH4OAc 1.0 N pH 7.0 - 4.8. Pada rentang kesetimbangan pH tersebut nilai kelarutan Ni pada perlakuan penjenuhan (J) dan pengeringan (K) tidak berbeda nyata pada uji taraf 5%. Namun kelarutan Ni pada setiap penambahan bobot gambut berbeda nyata pada kondisi penjenuhan yang dikeringkan sampai kondisi lembab (JK).

Co-Authors . Suwardi . Suwardi Atang Sutandi Bambang Hero Saharjo Budi Nugroho Darmawan Darmawan Darmono Taniwiryono Darmono Taniwiryono Darmono Taniwiryono Dwi Putro Tejo Baskoro Eka Rahmi Eliartati Eliartati Gunawan Djajakirana HAPPY WIDIASTUTI Happy Widiastuti Heru B. Pulunggono Heru Bagus Pulunggono Husni Mubarak Husni Mubarok Husni Mubarok Iskandar Iskandar Jamili, M Joehari Jon Hendri Komarsa Ganda Sasmita Moh Zulfajrin Nizam Tambusai Nourma Al Viandari Onrizal Onrizal Permatasari, Galuh Pulunggono, Heru S Siswanto Saeful Anwar Simbolon, David Ricardo Siswanto Siswanto Siswanto Sry Nurmala Syaiful Anwar Tsuyoshi Kato

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