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All Journal JTSL (Jurnal Tanah dan Sumberdaya Lahan) Journal of Degraded and Mining Lands Management Agroekoteknologi Tropika Lembab JIA (Jurnal Ilmiah Agribisnis) : Jurnal Agribisnis dan Ilmu Sosial Ekonomi Pertanian
F Fahrunsyah
Fakultas Pertanian Universitas Mulawarman Samarinda
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Environmental Science

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The possible use of coal fly ash and phosphate-solubilizing fungi for improving the availability of P and plant growth in acid soil Retno Wilujeng; Gusti Irya Ichriani; F Fahrunsyah; Yulia Nuraini; Eko Handayanto
Journal of Degraded and Mining Lands Management Vol 8, No 1 (2020)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2020.081.2471

Abstract

The availability of P in acid soils may be raised through the application of phosphate solubilizing fungi (PSF). Coal fly ash (CFA) that has a high pH and contains a relatively high P may also be used to raise the availability of P in acid sois. The purpose of this study was to explore the possible use of CFA and PSF in a biochar-compost carrier to improve the availability of P and plant growth in acid soil. Combined applications of two PSF isolates (Aspergillus oryzae = F1, and Neosartorya fischeri = F2) carried in three levels of biochar-compost  (80% biochar + 20% compost = B1, 70% biochar + 30% compost = B2, and 60% biochar + 40% compost =B3), and two doses of CFA (60 t/ha = C1, and 80 t/ha = C2) were tested in this study through two experiments. The results of experiment 1 (laboratory experiment) showed that the application of N. fischeri carried in 70% biochar + 30% compost combined with 80 t CFA/ha (F2B2C2 treatment) significantly increased the available P more than other treatments. In comparison with control,  the increase of soil available P content ranged from 13% in the F1B1C1 treatment (A. oryzae in 80% biochar + 20% compost combined with 60 t CFA/ha) to 101% in the F2B2C2 treatment (N.fischeri in 70% biochar + 30% compost combined with 80 t CFA/ha). The results of experiment 2 (glasshouse experiment) showed that the highest dry weight of maize shoot was obtained by the F2B2C2 treatment that increased 123% compared to control. The highest P uptake by maize was obtained by the F2B2C2 treatment (N. fischeri in 70% biochar + 30% compost combined with 80 t CFA/ha).
Kajian Literatur : Penggunaan Plant Growth Promoting Rhizobacteria (PGPR) untuk Meningkatkan Pertumbuhan dan Mengurangi Pemakaian Pupuk Anorganik pada Tanaman Pertanian Miftahul Jannah; Rabiatul Jannah; Fahrunsyah Fahrunsyah
Jurnal Agroekoteknologi Tropika Lembab Vol 5, No 1 (2022): Agroekoteknologi Tropika Lembab Volume 5 Nomor 1 Agustus 2022
Publisher : Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35941/jatl.5.1.2022.7940.41-49

Abstract

Pemenuhan kebutuhan hara dapat dilakukan melalui pemupukan anorganik yang dapat memenuhi kebutuhan hara tanaman dalam waktu yang relatif singkat, tetapi dapat meninggalkan residu kimia yang menyebabkan pemadatan pada tanah. Pemberian Plant growth promoting rhizobacteria (PGPR) sebagai pupuk hayati merupakan salah satu alternatif pemupukan yang dapat menyuburkan dan menyehatkan tanah, serta mengurangi pencemaran lingkungan akibat pemakai penggunaan pupuk anorganik yang berlebih. Kajian ini bertujuan untuk membahas mengenai mekanisme PGPR dalam mendukung pertumbuhan tanaman dan pengurangan penggunaan pupuk anorganik serta jenis-jenis PGPR yang terlibat pada masing-masing mekanisme. Kajian literatur ini dilakukan pada bulan April-Juli 2021 menggunakan data sekunder (pengumpulan data secara tidak langsung) melalui studi pustaka, yaitu mengumpulkan informasi dari sumber-sumber ilmiah seperti jurnal ilmiah, skripsi, publikasi ilmiah, peraturan-peraturan yang berkaitan dengan topik penelitian, pendapat ahli, maupun berbagai studi eksperimental. Hasil kajian ini menunjukkan bahwa PGPR mampu meningkatkan pertumbuhan tanaman melalui mekanismenya yang dapat memfiksasi nitrogen, melarutkan fosfat, dan mampu menghasilkan hormon asam indol asetat. Pengurangan jumlah penggunaan pupuk organik dengan penggunaan PGPR melalui mekanisme fiksasi nitrogen sebanyak 25-50%, melalui pelarutan fosfat terikat sebanyak 50 % dan melalui mekanisme penghasil AIA sebanyak 50%. Jenis PGPR yang terlibat dalam melalui mekanisme fiksasi nitrogen antara lain Azotobacter, Azospirillum,Rhizobium, Bradhyrhizobium, Mesorhizobium, Sinorhizobium, Frankia dan Bacillus. Jenis PGPR yang berperan dengan mekanisme pelarutan fosfat antara lain Pseudomonas, Azotobacter, Flavobacterium, Micrococcus dan Staphylococcus. Jenis PGPR menggunakan mekanisme penghasil AIA adalah Azotobacter, Pseudomonas, Bacillus dan Azospirillum.
Kajian Kesesuaian Lahan Tanaman Padi Sawah di Kecamatan Tanjung Selor Berbasis Sistem Informasi Geografis Yoga Toyibulah; Fahrunsyah Fahrunsyah; Hasbiadi Hasbiadi
JIA (Jurnal Ilmiah Agribisnis) : Jurnal Agribisnis dan Ilmu Sosial Ekonomi Pertanian Vol 7, No 2 (2022)
Publisher : Department of Agribusiness, Halu Oleo University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37149/jia.v7i2.24044

Abstract

Evaluation of the level of land suitability for rice crops is used in planning agricultural land use so that inhibiting factors and solutions can be found in processing land to be planted. This study aims to evaluate the suitability of land for rice crop plants by implementing a geographic information system that facilitates and accelerates the data processing process so that research output can be used for consideration in land use in Tanjung Selor Subdistrict of Bulungan District. The variable used in this study was temperature, water availability (rainfall), oxygen availability (soil drainage conditions), root media (soil texture), erosion hazard (slope), flood hazard (inundation), and land use. Rainfall data are obtained from the analysis of climate factor data from 2011 to 2020, soil texture data is obtained from field observations and soil maps, slope data were obtained from the Digital Elevation Model in 2014, and land use data is obtained from land-use map interpretation in 2019. Of the seven parameters, four parameters are obtained from the map, namely rainfall map, soil map, slope map, and land use map. Soil sampling and observations in the field in 2021 are carried out to obtain data on temperature, flood hazards, and soil drainage conditions. Based on the results of the analysis of land suitability of rice in Tanjung Selor Subdistrict, 13,65% is suitable marginal, and 86,35% is not suitable for planting rice. Tanjung Selor Subdistrict is dominated by areas that cannot be planted on and can be planted, but the results are less than optimal.
PENINGKATAN EFISIENSI PEMUPUKAN FOSFOR PADA ULTISOL DENGAN MENGGUNAKAN ABU TERBANG BATUBARA F Fahrunsyah; M Mulyadi; Agus Sarjono; Surya Darma
Jurnal Tanah dan Sumberdaya Lahan Vol. 8 No. 1 (2021)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (810.485 KB) | DOI: 10.21776/ub.jtsl.2021.008.1.22

Abstract

Ultisol is one type of soil that has a very wide distribution in Indonesia, but the use of this soil faces many obstacles. The main problem in ultisol utilization is the low availability of phosphorus (P) and the low absorption efficiency. Coal fly ash (CFA) is a material that can overcome these problems. The objective of this study was to examine the effect of Application CFA on several soil chemical properties (pH, exchangeable Al, exchangeable Ca and available P), plant growth, yield, and absorption efficiency of P fertilizer. This study used a completely randomized factorial design consisting of two factors. The first factor was CFA that consisted of three levels of treatment, namely: A0 = 0 t ha-1 or without CFA, A1 = 40 t CFA ha-1, A2 = 80 t CFA ha-1. The second factor was P fertilizer that consisted of four levels of treatment, namely: P0 = 0 kg ha-1, P1 = 30 kg P ha-1, P2 = 60 kg P ha-1 and P3 = 90 kg P ha-1. The results of the study showed that the application of 80 t CFA ha-1 increased the pH by 13.41%, reduced exchangeable Al by 59.53% and increased exchangeable by Ca 192.66% compared to control. The combination 80 t CFA ha-1 and 90 kg P ha-1 increased available P by 986.79% compared to control. The application of 80 t CFA ha-1 resulted in the highest total plant dry weight and total P uptake. The treatment resulted in total plant dry weight of 172.96 g and total P uptake of 187.62 mg plant-1, increased 62.39% and 100.21% respectively compared to the control. The application of 90 kg P fertilizer ha-1 resulted in the highest total dry weight of maize, and total P uptake, namely 167.49 g and 174.39 mg plant-1, respectively, which means that the total plant dry weight increased by 51.00% and the total uptake P increased 69.79% compared to control. The highest seed dry weight was obtained in the combination of 80 t CFA ha-1 and 90 kg P ha-1, namely 39.33 g, an increase of 715.53% compared to the control. The combination of 40 t CFA ha-1 and 30 kg P ha-1 resulted in the highest absorption efficiency of P fertilizer, namely 30.43%. This means that in this treatment, maize can absorb 30.43% of the applied P fertilizer.
Perubahan pH, Aluminium Dapat Tukar dan Fosfor Tersedia Ultisol karena Pemberian Pupuk Organik Batang Pisang dan Abu Terbang Batubara Fahrunsyah Fahrunsyah; Rabiatul Jannah; Andi Aldi Utama
Jurnal Agroekoteknologi Tropika Lembab Vol 6, No 1 (2023): Agroekoteknologi Tropika Lembab Volume 6 Nomor 1 Agustus 2023
Publisher : Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35941/jatl.6.1.2023.11679.1-6

Abstract

v>dari aspek karakteristik kimiawi dalam pemanfaatannya untuk budidaya tanaman. Penelitian ini bertujuan untuk mengetahui: 1)Kemampuan Pupuk Organik Cair Batang Pisang (FOCBP) dan Abu Terbang Batubara (ATB) dalam meningkatkan pH tanah danketersediaan P serta menurunkan kelarutan Al3+ dan 2) Waktu inkubasi yang terbaik didasarkan pada nilai pH, kelarutan Al dan PTersedia. Penelitian dilaksanakan di rumah kaca menggunakan metode inkubasi tanpa tanaman. Penelitian terdiri atas 12 perlakuan dan3 ulangan (36 unit percobaan). Media tanah untuk inkubasi adalah tanah Ultisol sebanyak 400 g kering udara setara 385,6 g tanah keringoven, yang dimasukkan ke dalam pot berdiameter 8 cm dan tinggi 10 cm. Media tanah inkubasi yang sudah diberi perlakuan sesuai dosisselanjutnya disiram sampai sekitar kapasitas lapang dan diinkubasi selama 9 minggu. Sebanyak 12 contoh tanah komposit diambil pada3, 6 dan 9 Minggu Setelah Inkubasi (MSI) untuk dianalisis. Parameter yang diukur adalah pH (H2O), Al3+ dan P-Tersedia. Hasil analisistanah tersebut khusus untuk pH dan P-Tersedia kemudian dikategorikan menurut kriteria penilaian analisis tanah Pusat Penelitian Tanah(PPT) Bogor 2005. Hasil penelitian sebagai berikut: 1) Pemberian POCBP dan ATB baik secara mandiri maupun kombinasi keduanyamampu meningkatkan pH dan P-Tersedia serta menurunkan kelarutan Al3+ , 2) Pemberian kombinasi 90 Mg ha-1 ATB dan 420.000 L ha-1 POCBP pada 3 MSI meningkatkan pH 70,25% dan P-Tersedia 266,20% dan menurunkan kelarutan Al3+ sebesar 1.300% dibandingkankontrol dan 3) Waktu inkubasi yang paling baik untuk POCBP dan ATB adalah 3 minggu.
Co-Authors Agus Sarjono Andi Aldi Utama Eko Handayanto Gusti Irya Ichriani Hasbiadi Hasbiadi M Mulyadi RABIATUL JANNAH Retno Wilujeng Surya Darma Yoga Toyibulah Yulia Nuraini