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All Journal Journal of Tropical Soils Journal of Degraded and Mining Lands Management JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Penelitian Pertanian Terapan Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Agrotek Tropika Jurnal Agrotropika
Jamalam Lumbanraja
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Engineering Environmental Science

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Optimum Ratio of Fresh Manure and Grain Size of Phosphate Rock Mixture in a Formulated Compost for Organomineral NP Fertilizer Nugroho, Sutopo Ghani; Dermiyati, .; Lumbanraja, Jamalam; Triyono, Sugeng; Ismono, Hanung; Sari, Yosa Triolanda; Ayuandari, Elva
JOURNAL OF TROPICAL SOILS Vol. 17 No. 2: May 2012
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2012.v17i2.121-128

Abstract

The objective of multi years study was to formulate an alternative organic based fertilizer by mixing a fresh manureand phosphate rock with several different grain sizes conducted in the Field Experimental Station of the Universityof Lampung. Both materials of the fresh manure and phosphate rock were obtained from local sources. Five levelsof mixture of fresh manure and phosphate rock, three levels of grain size of phosphate rock, and two kinds ofcomposting technique were factorial set up. The mixture materials were aerobically composted for 12 weeks. Theresults of the first year study show that (a) the optimum ratio of the mixture of fresh manure and phosphate rock was80% to 20% with the optimum of grain size of phosphate rock < 3 mm; (b) 6-8 weeks of incubation of the mixturematerials has been optimally composted under aerobic conditions of the complete mixture of batch compostedtechnique; (c) the quality of the final produced compost was considered to fulfill the requirement of standard criteriaof organic fertilizer; while (d) the quantity of compost recovered up to 75.07% which was a reliable quantity of massproduction of organic fertilizer.[How to Cite: Nugroho SG, Dermiyati, J Lumbanraja, S Triyono, H Ismono, YT Sari and E Ayuandari. 2012. Optimum Ratio of Fresh Manure and Grain Size of Phosphate Rock Mixture in a Formulated Compost for Organomineral NP Fertilizer. J Trop Soils 17 (2) : 121-128. Doi: 10.5400/jts.2012.17.2.121][Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.2.121]
Inoculation Effect of N2-Fixer and P-Solubilizer into a Mixture of Fresh Manure and Phosphate Rock Formulated as Organonitrofos Fertilizer on Bacterial and Fungal Populations Nugroho, Sutopo Ghani; Dermiyati, .; Lumbanraja, Jamalam; Triyono, Sugeng; Ismono, Hanung
JOURNAL OF TROPICAL SOILS Vol. 18 No. 1: January 2013
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2013.v18i1.75-80

Abstract

Microbial N2-fixer and P-solubilizer were innoculated in a mixture of fresh manure and phosphate rock formulated as an Organonitrophos fertilizer. The population dynamics of bacteria and fungi growing during the composting process were observed. The inoculation treatments consisted of: K = mixture of 20% phosphate rock and 80% of fresh manure + decomposers (control), N = mixture of 20% phosphate rock and 80% of fresh manure + decomposers + N2-fixer (Azotobacter and Azospirillum sp.) , P = mixture of 20% phosphate rock and 80% of fresh manure + decomposers + P-solubilizer (A. niger and P. fluorescens), and NP = mixture of 20% phosphate rock and 80% of fresh manure + decomposers + N2-fixer + P-solubilizer. The results showed that inoculation of microbial N2-fixer and combination inoculation of N2-fixer and P-solubilizer increased the total bacterial population compared to that of the control as well as the only inoculation of microbial P-solubilizer on the 14th day of observation in which the bacteria reached the highest population. On all the observation days, the population of fungi in the inoculation of microbial P-solubilizer treatment increased significantly compared to that of the control. However, there was no difference between the populations of fungi in the inoculation of N2-fixer and combination inoculation of N2-fixer and Psolubilizer. The genus of fungy identified in the compost of the mixture of fresh manure and phosphate rock were Chytridium sp., Aspergillus sp., Rhizopus sp., and Fusarium sp.[How to Cite : Nugroho SG, Dermiyati, J Lumbanraja, S Triyono, H Ismono. 2013. Inoculation Effect of N2-Fixer and P-Solubilizer into a Mixture of Fresh Manure and Phosphate Rock Formulated as Organonitrofos Fertilizer on Bacterial and Fungal Populations. J Trop Soils, 18 (1): 75-80. doi: 10.5400/jts.2013.18.1.75][Permalink/DOI: www.dx.doi.org/10.5400/jts.2013.18.1.75]
Application of Organonitrofos and Inorganic Fertilizer on Cassava (Manihot Esculenta Crantz) in Ultisol Soil Dermiyati, .; Lumbanraja, Jamalam; Banuwa, Irwan Sukri; Triyono, Sugeng; Maulida, Oktarina; Agsari, Debby
JOURNAL OF TROPICAL SOILS Vol. 20 No. 3: September 2015
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2015.v20i3.167-172

Abstract

A field experiment was conducted to find out a combination dose of a novel organic fertilizer (Organonitrophos, OP) and inorganic fertilizers (N, P, and K) for the growth and yield of cassava (Manihot esculenta Crantz) during two planting periods of 2012-2013 and 2013- 2014 in ultisol soil (low in nutrients and organic matter) of Bandarlampung. The treatments were a six combination of organic and inorganic fertilizer. The experiments were laid out in a randomized block design with three replications. The difference combination of Organonitrophos and NPK fertilizers showed significantly effects on the plant height, the NPK sorption of total plant and total root, and the yields of cassava. The highest NPK sorption of total plants and total yields and the highest yields of cassava were found in N45P36K120OP1,000 kg ha-1 combination for the two planting periods. Based on Relative Agronomic Effectiveness (RAE) of cassava root yield, it can be concluded that 45-36-120-1,000 N-P-K-Organonitrophos kg ha-1 was the best combination dose of inorganic and organic fertilizers for the production of cassava in ultisol soil of Bandarlampung. [How to Cite: Dermiyati, J Lumbanraja, IS  Banuwa,  S Triyono,  O  Maulida  and  D  Agsari. 2015. Application of Organonitrofos and Inorganic Fertilizer on Cassava (Manihot Esculenta Crantz) in Ultisol Soil. J Trop Soils 20: 167-172. Doi: 10.5400/jts.2015.20.3.167]
Effectiveness of Organonitrofos Plus Fertilizer on Sweet Corn and Soil Chemical Properties of Ultisols Dermiyati, .; Utomo, Setyo Dwi; Hidayat, Kuswanta Futas; Lumbanraja, Jamalam; Triyono, Sugeng; Ismono, Hanung; Ratna, Ni’malia Estika; Putri, Nidya Triana; Taisa, Rianida
JOURNAL OF TROPICAL SOILS Vol. 21 No. 1: January 2016
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2016.v21i1.9-17

Abstract

This study aimed to examine Organonitrofos Plus fertilizer (OP) on sweet corn (Zea mays Saccharata L.) and its effect on changes in soil chemical properties of Ultisols. Organonitrofos Plus fertilizer is an enhancement of Organonitrofos fertilizer enriched with microbes at the beginning of the manufacturing process. Research was conducted in the greenhouse of Integrated Agricultural Laboratory of Lampung University. Treatment applied was a factorial of 4 × 2 × 3 with three replications in a randomized block design. The first factor was the dose of OP fertilizer (0, 10, 20, 30 Mg ha-1), the second factor was the dose of inorganic fertilizers (without inorganic fertilizers, and with inorganic fertilizers, namely Urea 0.44, 0.28 SP-36 and KCl 0.16 Mg ha-1), and the third factor was the dose of biochar (0, 10, 20 Mg ha-1). By a single OP fertilizers, inorganic fertilizers, and the interaction between the OP and the inorganic fertilizers increased the weight of dry stover, cob length, cob diameter, cob with husk and cob without husk of corn. OP fertilizers which are applied in Ultisols can improve soil fertility and increase corn production so that OP fertilizer can lessen the use of inorganic fertilizer and can be used as a substitute for inorganic fertilizer. RAE values were highest in treatment of O4K2B2 (30 Mg OP ha-1, with inorganic fertilizer, 10 Mg biochar ha-1) that was equal to 181%, followed by O2K2B3 (10 Mg OP ha-1, with inorganic fertilizer, 20 Mg biochar ha-1 ) with the difference in RAE value of 0.5%. [How to Cite: Dermiyati, SD  Utomo,  KF Hidayat, J Lumbanraja, S Triyono, H Ismono, NE  Ratna, NT Putri dan R Taisa. 2016. Pengujian Pupuk Organonitrofos Plus pada Jagung Manis (Zea mays Saccharata. L) dan Perubahan Sifat Kimia Tanah Ultisols. J Trop Soils 21: 9-17 Doi: 10. 10.5400/jts.2016.21.1.9]
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).
The Behavior of Ammonium Exchange (Q/I) in Soil, Nitrogen and Carbon Uptake, and Mung Beans (Vigna radiata L.) Yields as Affected by Tillage and Fertilization at the Sixth Planting Period in Ultisol Soil Aini, Septi Nurul; Nurtyas, Omita Mega; Lumbanraja, Jamalam; Salam, Abdul Kadir
JOURNAL OF TROPICAL SOILS Vol. 27 No. 3: September 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i3.121-131

Abstract

Ultisol soil has a low organic matter content, CEC, and pH, causing an insufficient buffering capacity for N nutrients, especially NH4+. The objective of this study was to determine the effect of tillage and fertilization on the quantity and intensity (Q/I) of Ammonium (CRNH40, PBCNH4+, NH40, KG) in the soil, plant N and C uptake, and mung bean yields at the sixth growing season in ultisols. This study was arranged in a 2 × 2 factorial in a Randomized Block Design (RBD). The first factor was the tillage system (T), namely minimum tillage (T0) and intensive tillage (T1). The second factor was the fertilization (P), namely without fertilizer application (P0), and with fertilizer application (NPK 200 kg ha-1 + 1 Mg ha-1 chicken manure) (P1). Each treatment was replicated four times. The results showed that the application of NPK fertilizer significantly affected the mung bean yield, mung bean plant Nitrogen and Carbon uptake at harvest time. While, the intensive tillage had a very significant effect on increasing the N uptake compared to the minimum tillage. Minimum tillage and fertilization increased Q/I parameters (PBCNH4+, KG, CRNH40, and NH40). The parameter of Q/I (CRNH40) was significantly correlated with mung bean plant N and C uptake. PBCNH4+ and KG were significantly correlated with mung bean yields.
Changes of Soil Chemistry Characteristics of Tephra Mount Anak Krakatau-Indonesia, Through Leaching Experiment Setiawati, Astriana Rahmi; Lumbanraja, Jamalam; Kurnia, Ananda Ika; Hidayat, Manarul; Aini, Septi Nurul; Prasetyo, Dedy
JOURNAL OF TROPICAL SOILS Vol. 28 No. 2: May 2023
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2023.v28i2.57-70

Abstract

Studying the weathering process in pristine volcanic materials is crucial as this process will determine further soil characteristics. Mount Anak Krakatau is reported as one of the fastest-growing volcanoes. This volcano erupted powerfully in December 2018, ejecting tons of volcanic materials. These materials are considered pristine and unweathered tephra. Hence, a leaching experiment can be one of the crucial methods to predict further soil characteristics formed as climatic factors. Tephra sampling was conducted on 13 Augustus 2019 or eight months after the massive eruption of Mount Anak Krakatau in December 2018. Tephra samples were leached by deionized water (H2O), oxalic acid (H2C2O4) 0.02 M, and citric acid (C6H8O7) 0.02 M (solvents) for 90 days. pH of tephra increased approximately from  (3.95– 4.99 ) to (5.12–8.11). Organic-C rose about 0.2 to 1 point higher than organic-C of tephra before the leaching experiment. The increasing value of organic-C was predicted to increase CEC (Cation Exchange Capacity) (2.13–5.36 cmolc kg-1). After the leaching experiment, the tephra’s surface was weathered clearly as an impact of solvents and the growing of algae.
PENGARUH OLAH TANAH DAN PEMUPUKAN N JANGKA PANJANG TERHADAP KANDUNGAN KARBON ORGANIK, NITROGEN TANAH DAN SERAPAN N SERTA PRODUKSI PADA PERTANAMAN JAGUNG DI TANAH ULTISOL TAHUN KE-34 Yonathan, Yanda; Lumbanraja, Jamalam; Buchari, Henrie; Afrianti, Nur Afni
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.11390

Abstract

Ultisol merupakan salah satu jenis tanah di Indonesia yang mempunyai sebaran luas. Namun Ultisol merupakan salah satu jenis tanah di Indonesia dengan sebaran luas. Ultisol merupakan tanah yang memiliki tingkat kesuburan rendah sehingga perlu upaya perbaikan agar dapat dimanfaatkan secara optimal. Tujuan penelitian adalah mengetahui pengaruh olah tanah jangka panjang, pemupukan N, dan interaksi antara olah tanah jangka panjang, dan pemupukan N terhadap kadar C-organik tanah, N total tanah, serapan N, serta produksi tanaman jagung di Ultisol. Penelitian dilaksanakan pada 12 September 2021 – 30 Januari 2022 di Kebun Percobaan Polinela. Penelitian ini menggunakan RAK dengan 2 faktor, yaitu pemupukan nitrogen (N0 = tanpa pemupukan, N2 = pemupukan 200 kg N ha-1), olah tanah (T1 = olah tanah intensif, T2 = olah tanah minimum, T3 = tanpa olah tanah). Data hasil penelitian sifat tanah analisis tanah awal dan akhir dilakukan untuk mengetahui kandungan N-total tanah, C-organik tanah, C/N, dan pH tanah. Analisis data tanah dilakukan secara kualitatif menggunakan kriteria penilaian hasil analisis tanah. Data Sampel tanaman berupa (produksi berat kering, basah serta serapan N tanaman) di uji dengan menggunnakan anara dan dilanjutkan dengan unji BNT 5%. Tanpa olah tanah dan tanpa pemupukan N mampu meningkatkan C-organik tanah dan N-total tanah. Serapan N brangkasan jagung tertinggi yaitu pada perlakuan olah tanah minimum. Pemupukan N tidak mampu meningkatkan kandungan C-organik, tetapi dapat meningkatkan N-total tanah. Pemupukan N mampu meningkatkan produksi berat kering total dan berat basah total tanaman serta N terangkut total. Tidak terdapat interaksi antara pengaruh pemupukan N dan olah tanah terhadap serapan N dan produksi tanaman jagung.
PERILAKU PERTUKARAN AMONIUM (NH4+), N, C TERPANEN, DAN PRODUKSI JAGUNG AKIBAT PEMBERIAN BIOCHAR DAN PUPUK KANDANG AYAM DI TANAH ULTISOL PADA MUSIM TANAM KE-3 Indra, Indra Riswanto; Jamalam Lumbanraja; Supriatin; Abdul Kadir Salam; Arif, M.A Syamsul; Dedi Prasetyo; Septiana, Liska
Jurnal Agrotek Tropika Vol. 13 No. 3 (2025): JURNAL AGROTEK TROPIKA VOL 13, AGUSTUS 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i3.11396

Abstract

Kandungan nutrisi di tanah Ultisol yang sedikit dapat membuat tanah tidak subur sehingga mengakibatkan menurunnya produksitanaman jagung. Usaha yang bisa digunakan sebagai cara meningkatkan nutrisi tanah Ultisol yaitu dengan menambahkan biochar dan pupuk kandang ayam. Penelitian yang dilaksanakan ditujukan guna mempelajari efek penggunaan biochar serta pupuk kandang ayam pada pertukaran amonium (NH4+), N, C terpanen, dan produksi tanaman. Penelitian yang dijalankan memakai RAK non faktorial menggunakan 4 ulangan serta 4 pengaplikasian yaitu, PPD= Pupuk dasar, PPD + BCR= Pupuk dasar + Biochar dengan takaran 5 Mg ha-1, PPD + PKA= Pupuk dasar + Pupuk kandang ayam dengan takaran 5 Mg ha-1, dan PPD + BCR + PKA= Pupuk dasar + Biochar + Pupuk kandang ayam dengan takaran 5 Mg ha-1. Data dianalisis ragam serta dilanjutkan menggunakan uji BNT 5%, dilanjutkan dengan uji student-t. Selain itu, dilakukan uji korelasi untuk mengetahui korelasi antara PBCNH4+, CRNH40, ΔNH40, KG, dan KTK tanah dengan N dan C terpanen serta produksi jagung. Hasil menunjukan bahwa perlakuan biochar dan pupuk kandang ayam mengalami peningkatan daya sangga tanah (PBCNH4+). Produksi jagung pada pengaplikasian pupuk kandang ayam nyata lebih tinggi daripada perlakuan lain. Nitrogen dan carbon terpanen tanaman pada pengaplikasian biochar dengan pupuk kandang ayam nyata lebih tinggi dibandingkan perlakuan lainnya. Terdapat hubungan positif antara KTK dengan C terpanen serta produksi tanaman. Tidak terdapat hubungan PBCNH4+, CRNH40, ΔNH40, dan KG dengan N dan C terpanen, serta produksi tanaman.
Co-Authors Abdul Kadir Abdul Kadir Salam Afrianti, Nur Afni Agsari, Debby Ahmad Tusi Aini, Septi Nurul Ainin Niswati, Ainin Arif, M.A Syamsul Arif, M.A. Syamsul arjuana, danang Ayuandari, Elva Catur Putra Satgada, Catur Putra Dedi Prasetyo Dedy Prasetyo Dermiati - Dermiyati, . Dermiyati, D Dermiyati, Dermiyati Eka Purnama Sari, Eka Purnama Eldineri Zulkarnain, Eldineri Hamim Sudarsono . Hanum Riajeng Amalia, Hanum Riajeng Henrie Buchari, Henrie Hidayat, Manarul Indra, Indra Riswanto Irwan Irwan Izzaturrijal, Izzaturrijal Junita Barus Kurnia, Ananda Ika Kuswanta Futas Hidayat Lestari Wibowo Machfud, Indira Maria Viva Rini Maulida, Oktarina Nurtyas, Omita Mega Nurul Aini, Septi oktafri - Purnomo Purnomo Putri, Nidya Triana R Hanung Ismono Ratna, Ni’malia Estika Rosma Hasibuan, Rosma Rusdi Evizal Sari, Yosa Triolanda Sarno Sarno Septiana, Liska Septiana, Liska Mutiara Setiawati, Astriana Rahmi Setyo Dwi Utomo Sri Mulyani Sugeng Triyono SUPRIATIN Sutopo Ghani Nugroho Taisa, Rianida Tegar Rafshodi Awang, Tegar Rafshodi Utomo, Muhajir Widya Gandi Wiharso, Didin Wiwik Agustina, Wiwik Yonathan, Yanda Zuldadan Naspendra