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All Journal Journal of Tropical Soils Jurnal Penelitian Pertanian Terapan Jurnal Agrotek Tropika Jurnal Pengabdian Fakultas Pertanian Universitas Lampung
Henrie Buchari, Henrie
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Agriculture, Biological Sciences & Forestry Environmental Science

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UJI EFEKTIVITAS PUPUK ORGANONITROFOS DAN KOMBINASINYA DENGAN PUPUK KIMIA TERHADAP PERTUMBUHAN, SERAPAN HARA DAN PRODUKSI TANAMAN JAGUNG MANIS (ZEA MAYS SACCHARATA ) DI MUSIM TANAM KETIGA PADA TANAH ULTISOL GEDUNG MENENG Sari, Eka Purnama; Lumbanraja, Jamalam; Buchari, Henrie; Niswati, Ainin
Jurnal Penelitian Pertanian Terapan Vol 15, No 3 (2015)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v15i3.127

Abstract

Organonitrofos fertilizer is organic fertilizer derived from cow manure enriched with rock phosphate and microbial activity involves fastening N and phosphate newly developed solvent. This study aimed to determine dose combination Organonitrofos fertilizers and inorganic fertilizers are most effective against the growth, nutrient uptake, and yield of sweet corn. This research was conducted in November 2012 until March 2013 in the Integrated Field Laboratory, University of Lampung using Random Design (RBD) consisting of 6 treatments with 3 groups. Treatment A (control), B (300 kg Urea ha-1, 200 kg of SP-36 ha-1, 100 kg of KCl ha-1), C (225 kg Urea ha-1, 150 kg SP-36 ha-1, 75 kg KCl ha-1, 1000 kg Organonitrofos ha-1), D (150 kg Urea ha-1, 100 kg of SP-36 ha-1, 50 kg of KCl ha-1, 1,500 kg Organonitrofos ha-1), E (Urea 75 kg ha-1, SP-36 50 kg ha-1, 25 kg ha-1 KCl, Organonitrofos 2000 kg ha-1), F (3,000 Organonitrofos kg ha-1). The results showed that treatment at a dose of 150 kg of urea ha-1, SP-36 100 kg ha-1, 50 kg ha-1 KCl, Organonitrofos 1500 kg ha-1 is able to increase the growth, production and sweet corn crop nutrient uptake. This treatment was also the most effective treatment of the total biomass of sweet corn plants based on calculations Relative Agronomic Effectivenes (RAE) that is equal to 108.573%. Economical test results showed that treatment at a dose of 300 kg of urea ha-1, SP-36 200 kg ha-1, 100 kg ha-1 KCl most economical compared to other treatments. Keywords: sweet corn, the combination of fertilizer, organonitrofos, nutrient uptake
PENGARUH KOMBINASI PUPUK ORGANONITROFOS DAN PUPUK ANORGANIK TERHADAP SIFAT KIMIA TANAH DAN PRODUKSI TANAMAN JAGUNG (Zea mays L.) DI TANAH ULTISOLNATAR PADA MUSIM TANAM KE DUA Putra, Ryandi Eka; Dermiyati, Dermiyati; Afrianti, Nur Afni; Buchari, Henrie
Jurnal Agrotek Tropika Vol 8, No 1 (2020): Jurnal Agrotek Tropika Vol 8, Januari 2020
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2894.121 KB) | DOI: 10.23960/jat.v8i1.3689

Abstract

Pupuk Organonitrofos merupakan pupuk organik yang dirakit dari bahan-bahan kotoran sapi segar, limbah MSG, sabut kelapa, Trichodermasp., serta mikroba penambat N dan pelarut P sehingga diharapkan dapat mengurangi penggunaan pupuk anorganik.  Penelitian ini bertujuan untuk mengetahui pengaruh pemberian kombinasi pupuk Organonitrofos dan pupuk anorganik terhadap pertumbuhan dan produksi tanaman jagung, dan melakukan uji Relative Agronomic Effectiviness (RAE) terhadap produksi jagung.  Penelitian dilakukan dengan menggunakan Rancangan Acak Kelompok (RAK) yang terdiri dari 11 perlakuan dan 3 ulangan.  Perlakuan adalah kombinasi pupuk Organonitrofos dan pupuk anorganik.  Hasil penelitian menunjukkan bahwa perlakuan kombinasi pupuk Organonitrofos dan anorganik pada T6 (100% Organonitrofos + 100% NPK) memberikan pengaruh terbaik terhadap fase generatif yang ditunjukkan padavariabel tinggi tanaman, bobot basah brangkasan bobot tongkol dengan kelobot dan bobot tongkol tanpa kelobot dan  merupakan dosis paling efektif secara agronomis karena memiliki nilai RAE 425%.  Terdapat korelasi yang nyata antara P-tersedia tanah dengan bobot tongkol berkelobot dan P-tersedia tanah dengan bobot tongkol tanpa kelobot jagung.
PENGARUH BERBAGAI JENIS ADSORBEN TERHADAP KONDUKTIVITAS HIDRAULIK JENUH DAN KUALITAS AIR PADA PROSES PURIFIKASI LIMBAH CAIR Farida, Resti; Afandi, Afandi; Ramadhani, Winih Sekaringtyas; Buchari, Henrie
Jurnal Agrotek Tropika Vol 11, No 3 (2023): JURNAL AGROTEK TROPIKA VOL 11, Agustus 2023
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v11i3.7524

Abstract

Limbah cair yang dihasilkan dari aktivitas domestik dan industri memerlukan tindakan pengelolaan agar tidak menyebabkan permasalahan lingkungan.  Pengelolaan limbah cair dilakukan untuk meminimalisir indikator pencemar agar limbah aman dibuang ke perairan. Penelitian ini bertujuan untuk mengetahui pengaruh karbon aktif, zeolit dan nano filter sebagai adsorben terhadap nilai konduktivitas hidraulik jenuh dan indikator fisik kualitas air. Penelitian ini dilaksanakan di Laboratorium Fisika Tanah, Fakultas Pertanian Universitas Lampung pada Agustus – September 2018, menggunakan Rancangan Acak Lengkap (RAL) dengan 2 faktorial (3x3).  Faktor pertama adalah jenis bahan yang berpengaruh sebagai adsorben, yang terdiri dari karbon aktif, zeolit dan nano filter 1µm.  Faktor kedua adalah jenis sampel limbah yang digunakan, yaitu air sumur (kontrol), limbah surfaktan (deterjen), dan limbah pewarna Rhodamin B.  Data hasil pengamatan dianalisis dengan ANARA, dan dilanjutkan dengan uji BNT pada taraf 1%. Hasil penelitian menunjukkan bahwa penggunaan zeolit pada limbah surfaktan dan nano filter pada air sumur efektif untuk menurunkan persentase TDS, dan penggunaan zeolit pada limbah Rhodamin B efektif untuk menyeimbangkan kadar pH, sehingga sesuai dengan standar Permenkes dan Peraturan Menteri Lingkungan Hidup, perubahan warna Rhodamin B pada perlakuan zeolit sebesar 25 % menunjukkan hasil yang paling berpengaruh dibandingkan nano filter dan karbon aktif, dan perlakuan zeolit memiliki memiliki nilai konduktivitas hidraulik jenuh paling rendah tetapi memiliki pengaruh paling baik terhadap kualitas air hasil purifikasi limbah cair
PENERAPAN MOL IN SITU DALAM MENDUKUNG PENGELOLAAN SAMPAH ORGANIK UNTUK MEWUJUDKAN PERTANIAN ORGANIK DI KELURAHAN PINANG JAYA, BANDAR LAMPUNG Ramadhani, Winih sekaringtyas; Aini, Septi Nurul; Afandi, Afandi; Buchari, Henrie; Febriana, Jonah
Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Vol. 1 No. 2 (2022): Jurnal Pengabdian Fakultas Pertanian Universitas Lampung
Publisher : Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpfp.v1i2.6273

Abstract

Pinang Jaya adalah Kelurahan di Bandar Lampung yang memproduksi sayur-mayur. Saat ini pemupukan sayur-mayur masing menggunakan pupuk kimia. Selain itu tingginya limbah rumah tangga yaitu nasi basi yang tidak termanfaatkan mengakibatkan terjadinya pencemaran lingkungan. Sehingga perlu dilakukan pengomposan limbah organik menjadi Mikroorganisme Lokal (MOL) in situ untuk mengurangi penumpukan limbah organik serta mampu menjadi pupuk organik cair. MOL limbah in situ dijadikan sebagai bahan pembenah tanah untuk mendukung sistem pertanian “Safe and Healthy Farm” dalam mewujudkan pertanian organik. Kegiatan pengabdian dilakukan dengan ceramah, demonstrasi, demoplot dan evalusi kegiatan. Sasaran dari kegiatan ini yaitu warga di Pinang Jaya dan anggota Safe and Healthy Farm. Berdasarkan hasil kegiatan pengabdian menunjukkan bahwa terjadi peningkatan pemahaman terkait pemanfaatan limbah organik berupa nasi basi in situ menjadi MOL sebesar 75%. Indikator penilaian pemahaman peserta pengabdian dinilai dari hasil pre-test dan post-test. Pada hasil pre-test pemahaman warga terkait MOL sangat rendah yaitu 20%. Setelah dilakukan penjelasan serta demontrasi pembuatan MOL, peserta pengabdian mengalami peningkatan pemahaman, hasil test setelah kegiatan yaitu 95%. Hal ini menunjukkan bahwa  warga Pinang Jaya telah memahami pengelolaan limbah rumah tangga menjadi produk MOL in situ. 
DISEMINASI PEMBUATAN CHARCOAL DIPERKAYA MIKROORGANISME LOKAL INSITU SEBAGAI MEDIA TUMBUH SAYUR ORGANIK UNTUK MENDUKUNG “SAFE AND HEALTHY FARM” DI KELURAHAN PINANG JAYA, BANDAR LAMPUNG Ramadhani, Winih Sekaringtyas; Afandi, Afandi; Buchari, Henrie
Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Vol. 3 No. 1 (2024): Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Vol 3 No 1, Maret 2024
Publisher : Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpfp.v3i1.8542

Abstract

Kelurahan di Bandar Lampung yang memproduksi sayur-mayur salah satunya terdapat di Kelurahan Pinang Jaya. Penggunaan pupuk kimia saat ini masih diterapkan dalam budidaya sayur-mayur, hal ini mengakibatkan kualitas dan kuantitas sayur rendah. Selain itu, Kelurahan Pinang Jaya memiliki pabrik penggilingan padi yang limbah sekam padi belum termanfaatkan, sehingga menjadi sarang tikus yang menjadi hama tanaman sayur. Akibatnya terjadi penumpukan limbah sekam padi yang tidak dikelola dengan tepat, sehingga mencemari lingkungan sekitar. Solusi yang dimungkinkan yaitu pemanfaatan limbah sekam padi menjadi charcoal untuk mendukung sistem pertanian “Safe and Healthy Farm” dalam mewujudkan pertanian organik. Kegiatan pengabdian dilakukan dengan ceramah, demonstrasi, demoplot dan evalusi kegiatan. Sasaran dari kegiatan ini yaitu warga di Pinang Jaya dan anggota Safe and Healthy Farm. Berdasarkan hasil kegiatan pengabdian menunjukkan bahwa terjadi peningkatan pemahaman terkait pemanfaatan limbah sekam padi menjadi charcoal sebesar 75%. Indikator penilaian pemahaman peserta pengabdian dinilai dari hasil pre-test dan post-test. Pada hasil pre-test pemahaman warga terkait MOL sangat rendah yaitu 20%. Setelah dilakukan penjelasan serta demontrasi pembuatan charcoal, peserta pengabdian mengalami peningkatan pemahaman, hasil test setelah kegiatan yaitu 95%. Hal ini menunjukkan bahwa warga Pinang Jaya telah memahami pengelolaan limbah sekam padi  menjadi  charcoal. 
Long-term Tillage and Nitrogen Fertilization Effects on Soil Properties and Crop Yields Utomo, Muhajir; Banuwa, Irwan Sukri; Buchari, Henrie; Anggraini, Yunita; Berthiria, .
JOURNAL OF TROPICAL SOILS Vol. 18 No. 2: May 2013
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2013.v18i2.131-139

Abstract

The impact of agricultural intensification on soil degradation now is occurring in tropical countries. The objective of this study was to determine the effect of long-term tillage and N fertilization on soil properties and crop yields in corn-soybean rotation. This long-term study which initiated since 1987 was carried out on a Typic Fragiudult soil at Politeknik Negeri Lampung, Sumatra (105o13’45.5"-105o13’48.0"E, 05o21’19.6"-05o21’19.7"S) in 2010 and 2011. A factorial experiment was arranged in a randomized block design with four replications. The first factor was tillage system namely intensive tillage (IT) and conservation tillage (CT) which consist of minimum tillage (MT) and no-tillage (NT); while the second factor was N fertilization with rates of 0, 100 and 200 kg N ha-1 applied for corn, and 0, 25, and 50 kg N ha-1 for soybean. The results showed that  bulk density and soil strength at upper layer after 24 years of cropping were similar among treatments, but the soil strength under IT at 50-60 cm depth was 28.2% higher (p<0.05) than NT. Soil moisture and temperature under CT at 0-5 cm depth were respectively 38.1% and 4.5%  higher (p<0.05) than IT. High N rate decreased soil pH at 0-20 cm depth as much as 10%,  but increased total soil N at 0-5 cm depth as much as 19% (p<0.05).  At 0-10 cm depth, MT with no N had highest exchangeable K, while IT with medium N rate had the lowest (p<0.05). At 0-5 cm depth, MT with no N had highest exchangeable Ca, but it had the lowest (p<0.05) if combined with higher N rate. Microbial biomass C throughout   the growing season for NT was consistently highest and it was 14.4% higher (p<0.05) than IT. Compared to IT, Ap horizon of CT after 24 years of cropping was deeper, with larger soil structure and more abundance macro pores. Soybean and corn yields for long-term CT were 64.3% and 31.8% higher (p<0.05) than IT, respectively. Corn yield for long-term N with rate of 100 kg N ha-1 was 36.4% higher (p<0.05) than with no N.Keywords: Conservation tillage, crop yields, N fertilization, soil properties[How to Cite: Utomo M, IS Banuwa, H Buchari, Y Anggraini  and  Berthiria. 2013.Long-term Tillage and Nitrogen Fertilization Effects on Soil Properties and Crop Yields. J Trop Soils 18 (2): 131-139. Doi: 10.5400/jts.2013.18.2.131][Permalink/DOI: www.dx.doi.org/10.5400/jts.2013.18.2.131] REFERENCESAl-Kaisi and X Yin. 2005. Tillage and crop residue effects on soil carbon dioxide emission in corn-   soybean rotation. J Environ Qual 34: 437-445. Pub Med. Barak P, BO Jobe, AR Krueger, LA Peterson and DA Laird. 1997. Effects of long-term soilacidification due to nitrogen inputs in Wisconsin. Plant Soil 197: 61-69.Blake GR and KH  Hartge. 1986.  Bulk density. In: A Klute (ed). Methods of Soil Analysis. ASA and SSSA.  Madison, Wisconsin, USA, pp. 363-375.Blanco-Canqui H and R Lal. 2008. No-till and soil-profile carbon sequestration: an on farm assessment. Soil Sci Soc Am J  72: 693-701.  Blanco-Canqui H, LR  Stone and PW Stahlman.  2010. Soil response to long-term cropping systems on an Argiustoll in the Central Great Plains. Soil Sci Soc Am J 74: 602-611.Blevins RL, MS Smith, GW Thomas and WW Frye. 1983. Influence of conservation tillage on soil properties.  J Soil Water Conserv 38: 301-305.Blevins RL, GW Thomas and PL Cornelius. 1977 Influence of no-tillage and nitrogen  fertilization on certain soil properties after 5 years of continuous corn. Agron J 69: 383-386.Blevins, RL and WF Frye, 1993. Conservation tillage: an ecological approach to soil management. Adv Agron 51: 34-77.Brady NC and RR Weil. 2008. The nature and properties of soils. Pearson Prentice Hall. Fourteenth Edition. New Jersey, 965 p.Brito-Vega, H, D Espinosa-Victoria, C Fragoso, D Mendoza, N De la Cruz Landaro and A Aldares-Chavez. 2009. Soil organic particle and presence of earthworm under different tillage systems. J Biol Sci  9: 180-183.Derpch, R 1998. Historical review of no-tilage cultivation of crops. JIRCAS Working Rep. JAPAN Int  Res Ctr for Agric Sciences, Ibaraki, Japan 13: 1-18.  Diaz-Zorita, M., JH Grove, L Murdock, J Herbeck and E Perfect. 2004. Soil structural disturbance effects on crop yields and soil properties in a no-till production system. Agron J 96: 1651-1659.Dickey EC, PJ Jasa and RD Grisso. 1994. Long-term tillage effect on grain yield and soil properties in a soybean/grain sorghum Rotation. J Prod Agric 7: 465 - 470.Edwards WM, LD, Norton, CE, Redmond. 1988. Characterizing macro pores that affect infiltration into non tilled soil. Soil Sci  Soc  Am  J 52: 483-487.Fernandez RO, PG Fernandez, JVG Cervera and  FP Torres. 2007 Soil properties and crop yields after 21 years of direct drilling trials in southern Spain. Soil Till Res 94: 47-54.Fengyun Z, W Pute, Z Xining and C Xuefeng. 2011. The effects of no-tillage practice on soil physical properties. Afr J Biotech 10: 17645-17650. Havlin, JL, JD Beaton, SM Tisdale and WL Nelson. 2005. Soil Fertility and Fertilizer: an Introduction to Nutrient Management. Pearson Prantice Hall. Sevent Edition. Upper Saddle River, New Jersey, 515 p.Karlen DL, NC Wollenhaupt, DC Erbach,  EC Berry, JB Swan, NS Eash and JL Jordahl. 1994. Crop  residue effects on soil quality following 10-years of no-till corn. Soil Till Res 31: 149-167.Kumar  A and DS Yadav. 2005. Effect of zero and minimum tillage in conjunction with nitrogen management in wheat (Triticum aestivum ) after rice (Oryza sativa.). Indian J Agron 50 (1): 54-57.Lal R. 1989. Conservation tillage for sustainable agriculture: tropics versus temper­ate environment. Adv Agron 42: 85-197.Lal R. 1997. Residue management, conservation tillage and soil restoration for mitigating greenhouse effect by CO2 enrichment. Soil Till Res 43: 81-107.Lal R. 2007.  Soil science in a changing climate. CSA New 52: 1-9.Mallory J J, RH  Mohtar, GC Heathman, DG Schulze and E Braudeau. 2011. Evaluating the effect of tillage on soil structural properties using the pedostructure concept. Geoderma 163: 141-149. doi:10.1016/ j.geoderma. 2011.01.018. 9p.Paustian K,  HP Collins and EA Paul. 1997. Management control on soil carbon. In: EA Paul, ET Elliot, K Paustian and CV Cole  (eds). Soil Organic Matter in Temperate Agro-ecosystems: Long-term Experiment in North America. CRC Press, pp. 15-50.Rasmussen, KJ. 1999. Impact of ploughless soil tillage on yield and soil quality: A Scandinavian review. Soil Till Res 53: 3-14.Quintero M. 2009. Effects of conservation tillage in soil carbon sequestration and net revenues of potato-based rotations in the Colombian Andes. [Thesis], University of Florida, USA. SAS [Statistical Analysis System] Institute. 2003. The SAS system for windows. Release 9.1. SASInst Inc, Cary, NC.Singh A and J Kaur. 2012. Impact of conservation tillage on soil properties in rice-wheat cropping system. Agric Sci Res J 2: 30-41.Six, J, SD Frey, RK Thiet and KM Batten. 2006. Bacterial and fungal contributions to carbon sequestration in agroecosystems. Soil Sci Soc Am J 70: 555-569.Smith JL and HP Collins. 2007. Management of organisms and their processes in soils. In: EA Paul (ed). Soil Microbiology, Ecology and Biochemistry. Third Edition. Academic Press, Burlington, USA, 532 p.Stockfisch N, T  Forstreuter, W Ehlers. 1999. Ploughing effects on soil organic matter after twenty years of conservation tillage in Lower Saxony, Germany. Soil Till Res 52: 91-101.Tarkalson, DD, GW Hergertb and KG Cassmanc. 2006. Long-term effects of tillage on soil chemical properties and grain yields of a dryland winter wheat-sorghum/corn-fallow  rotation in the great plains. Agron J 26: 26-33.                Thomas GA, RC Dalal, J Standley. 2007. No-till effect on organic matter, pH, cation exchange  capacity and nutrient distribution in a Luvisol in the semi-arid subtropics. Soil Till Res 94: 295-304.Utomo M, H Suprapto and Sunyoto. 1989. Influence of tillage and nitrogen fertilization on soil nitrogen, decomposition of alang-alang (Imperata cylindrica) and corn production of alang-alang land.  In: J van der Heide (ed.). Nutrient management for food crop production in  tropical farming systems. Institute for Soil Fertility (IB), pp. 367-373.Utomo M. 2004. Olah tanah konservasi untuk budidaya jagung berkelanjutan. Prosiding Seminar Nasional IX Budidaya Pertanian Olah Tanah Konservasi. Gorontalo, 6-7 Oktober, 2004, pp. 18-35 (in Indonesian).Utomo M,  A Niswati, Dermiyati, M R Wati, AF Raguan and S Syarif. 2010. Earthworm and soil carbon sequestration after twenty one years of continuous no-tillage corn-legume rotation in Indonesia. JIFS  7: 51-58.Utomo M, H Buchari, IS Banuwa, LK Fernando and R Saleh. 2012. Carbon storage and carbon dioxide emission as influenced by long-term conservation tillage and nitrogen fertilization in corn-soybean rotation. J Trop Soil 17: 75-84.Wang W,  RC Dalal and PW Moody. 2001. Evaluation of the microwave irradiation method for measuring soil microbial biomass. Soil Sci  Soc Am J 65: 1696-1703.Wright AL and FM Hons.  2004. Soil aggregation and carbon and nitrogen storage under soybean cropping sequences. Soil Sci Soc Am J 68: 507-513. Zibilske LM, JM Bradford and JR Smart. 2002. Conservation tillage induced change in organic carbon, total nitrogen and available phosphorus in a semi-arid alkaline subtropical soil. Soil Till Res 66: 153-163.
Texture and Chemical Properties of Two Depth Soils in a Toposequence of Anak Krakatau Before December 2018 Eruption Setiawati, Astriana Rahmi; Lumbanraja, Jamalam; Nurul Aini, Septi; Dermiyati, Dermiyati; Buchari, Henrie; Naspendra, Zuldadan
JOURNAL OF TROPICAL SOILS Vol. 25 No. 2: May 2020
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2020.v25i2.71-81

Abstract

Anak Krakatau volcano is one of the famous volcanic mountains located in the sea to the south part of the Province of Lampung, Indonesia. The volcano was derived from the active Krakatau caldera that first appeared on the surface in 1930 or 47 years after the eruption of Krakatau in 1883. The materials produced by the Anak Krakatau eruption were very interesting related to soil forming materials, especially their physical and chemical properties. The objectives of this study were to present information about the texture and chemical properties of soil from Anak Krakatau Mountain taken at the southeast slope before the December 2018 eruption at two different depths. This study was conducted in March to September 2019 which consisted of two parts: (1) soil survey in the field and (2) soil analysis in the laboratory. Soil samples were taken from a toposequence at seven points with an interval about 15m above sea level (asl) on the southeast slope (approaching northeast) of the Anak Krakatau in July 2018 at the depth of 0-20 cm and 20-40 cm. The soil texture of Anak Krakatau mountain before eruption in December 2018 was sandy with the percentage of sand 98.82 - 99.59%; silt 0 - 0.59%; and clay 0.41 - 0.74%. The soil chemical properties of Anak Krakatau mountain were soil pH (H2O) 4.95 – 6.27; soil pH (KCl) 4.75 – 5.89; Cation Exchange Capacity 0.41 – 2.02 cmol(+) kg-1; Base Saturation 117.24 – 514.63%; CaO 2.63 – 6.34%; MgO 3.06 – 6.13%; K2O 0.019 – 0.034%; Na2O 0.035 – 0.080%; P-retention 82.10 – 84.74%; and organic carbon 0.06 – 0.72%. The SEM-EDX analysis showed that the amounts of Mg and Na were more than 1% and there were several trace elements present in Anak Krakatau soil, namely Sb (Stibium), Nb (Niobium), Y (Yttrium), F (Flour), Co (Cobalt), and Ba (Barium).
Carbon Storage and Carbon Dioxide Emission as Influenced by Long-term Conservation Tillage and Nitrogen Fertilization in Corn-Soybean Rotation Utomo, Muhajir; Buchari, Henrie; Banuwa, Irwan Sukri; Fernando, Lanang Koko; Saleh, Rahmat
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.v17i1.75-84

Abstract

Although agriculture is a victim of environmental risk due to global warming, but ironically it also contributes to global greenhouse gas (GHG) emission. The objective of this experiment was to determine the influence of long-term conservation tillage and N fertilization on soil carbon storage and CO2 emission in corn-soybean rotation system. A factorial experiment was arranged in a randomized completely block design with four replications. The first factor was tillage systems namely intensive tillage (IT), minimum tillage (MT) and no-tillage (NT). While the second factor was N fertilization with rate of 0, 100 and 200 kg N ha-1 applied for corn, and 0, 25, and 50 kg N ha-1 for soybean production. Samples of soil organic carbon (SOC) after 23 year of cropping were taken at depths of 0-5 cm, 5-10 cm and 10-20 cm, while CO2 emission measurements were taken in corn season (2009) and soybean season (2010). Analysis of variance and means test (HSD 0.05) were analyzed using the Statistical Analysis System package. At 0-5 cm depth, SOC under NT combined with 200 kg N ha-1 fertilization was 46.1% higher than that of NT with no N fertilization, while at depth of 5-10 cm SOC under MT was 26.2% higher than NT and 13.9% higher than IT.  Throughout the corn and soybean seasons, CO2-C emissions from IT were higher than those of MT and NT, while CO2-C emissions from 200 kg N ha-1 rate were higher than those of 0 kg N ha-1 and 100 kg N ha-1 rates.  With any N rate treatments, MT and NT could reduce CO2-C emission to 65.2 %-67.6% and to 75.4%-87.6% as much of IT, respectively. While in soybean season, MT and NT could reduce CO2-C emission to 17.6%-46.7% and 42.0%-74.3% as much of IT, respectively.  Prior to generative soybean growth,   N fertilization with rate of 50 kg N ha-1 could reduce CO2-C emission to 32.2%-37.2% as much of 0 and 25 kg N ha-1 rates.
The Phytoextraction of Copper from Tropical Soil 21 Years after Amendment with Heavy-Metal Containing Waste Silva, Gianluigi; Aini, Septi Nurul; Buchari, Henrie; Salam, Abdul Kadir
JOURNAL OF TROPICAL SOILS Vol. 26 No. 1: January 2021
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2021.v26i1.11-18

Abstract

Several particular plants are suggested to extract significant parts of heavy metals from soils and accumulate them in their roots and shoots.  This research aimed to study the phytoextraction of Cu by several plants from heavy-metal contaminated tropical soils.  Soil samples collected from plots treated in 1998 with 0, 15 and 60 Mg industrial waste ha-1 were planted with three different plants, i.e., caisim, water spinach, and lettuce.   Plant parts (roots and shoots) and soil samples were harvested after a four-week growth period and analyzed for plant and soil Cu.  The results show that the growth of plants was depressed by the increase in the soil Cu (extracted by 1 N HNO3) as affected by waste levels, with water spinach being the most progressive and produced the most significant biomass.  The absorption of Cu by caisim and water spinach increased with the soil extracted Cu (linear R2 = 0.71* for caisim and 0.32* for water spinach) and accumulated greater in plant roots than that in shoots. The translocation factor (TF << 1.00) indicates that all plants were good Cu phytostabilizators rather than phytoextractors, with water spinach being the best Cu extractor.
Change of Soil Biomass Carbon Microorganism in Ultisols Soil Due to Application of Humic Acid and TSP Fertilization Buchari, Henrie; Untari, Tri; Niswati, Ainin; Sunyoto, Sunyoto
JOURNAL OF TROPICAL SOILS Vol. 26 No. 3: September 2021
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2021.v26i3.149-156

Abstract

Soil biomass carbon microorganism (C-mic) is one indicator of soil fertility. The application of humic acid, vermicompost aqueous extract, and TSP fertilization applied to the soil will affect the activity of soil microorganisms. This research aimed to study the effect of humic acid, vermicompost extract, and TSP fertilization on C-mic. The first factor was the application of humic acid (h), namely, without humic acid, commercial origin, and humic acid-like from watery extract vermicompost. The second factor is TSP fertilization (p) divided into four dose levels: without TSP fertilizer, TSP fertilizer 100 kg ha-1, TSP fertilizer 200 kg ha-1, and TSP fertilizer 300 kg ha-1. Data were analyzed by analysis of variance and continued with the Least Significant Difference (LSD) test at the 5% significance level. The correlation between C-organic, soil pH, soil temperature, soil moisture content, stalk dry weight, and weight of corn kernels with C-mic was tested by correlation test. The results showed that the application of humic acid and TSP fertilization had no significant effect on C-mic, and there was no interaction between the two at seven days after planting (DAP), 56 DAP, and 104 DAP. There was a correlation between soil organic carbon 7 DAP (r: 0.34*), 56 DAP (r: 0.59*), and 104 DAP (r: 0.53*), soil moisture content at 7 DAP (r: 0.36*), soil pH at 56 DAP (r: 0.42*) and 104 DAP (r: 0.43*), soil temperature at 104 DAP (r: -0.52*), stalk dry weight at 56 DAP (r: 0.34*), corn kernels weight at 113 DAP (r: 0.65*) with C-mic.
Co-Authors Abdul Kadir Afandi Afandi Afrianti, Nur Afni Aini, Septi Nurul Ainin Niswati, Ainin Anggraini, Yunita Berthiria, . Dermiyati, Dermiyati Eka Purnama Sari, Eka Purnama Farida, Resti Febriana, Jonah Fernando, Lanang Koko Irwan Irwan Jamalam Lumbanraja Nurul Aini, Septi Putra, Ryandi Eka Rahmat Saleh Ramadhani, Winih Sekaringtyas Setiawati, Astriana Rahmi Silva, Gianluigi Sunyoto Sunyoto Tri Untari Utomo, Muhajir Yonathan, Yanda Zuldadan Naspendra