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All Journal Jurnal Agroteknos International Journal of Science and Environment
Made Widana Arsana
Department Of Agrotechnology, Faculty Of Agriculture, Halu Oleo University, Kendari 93232, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Mathematics Physics

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PENGARUH BERBAGAI LEVEL IRIGASI BAWAH PERMUKAAN DAN APLIKASI BIOCHAR TERHADAP PERTUMBUHAN DAN HASIL PADI SAWAH GUSTI AGUNG KADE ERNA WARDANA; NINI MILA RAHNI; I MADE WIDANA ARSANA; LAODE SABARUDDIN; MIRZA ARSIATY ARSYAD; ARSY AYSYAH ANAS
Jurnal Agroteknos Vol 13, No 2 (2023)
Publisher : Fakultas Pertanian Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56189/ja.v13i2.43328

Abstract

This research aims to determine the effect of subsurface irrigation water level and biochar application on the growth and yield of lowland rice. The research was conducted at Experimental Garden I, Faculty of Agriculture University Halu Oleo. The study consisted of two factors of treatments laid out in an RBCD-based factorial experimental design. The first factor consisted of four levels of subsurface irrigation (S) (i.e., 0, 4, 8, and 12 cm below the soil surface). The other factor also consisted of four levels of rice husk biochar (B) (i.e., 0, 10, 20, and 30 metric tons ha–1). Each treatment combination was given three replications. The collected data were analyzed with ANOVA and the differences among treatments were tested with DMRT at P=0.05. The study showed that both factors had no interaction effect on all parameters. The subsurface irrigation treatments, however, showed significant effects on plant height (56, 70, 84 DAS), leaf area (56, 70 DAS), flag leaf area, dry weight of root and shoot, panicle length, number of grains per panicle, grain weight after harvest per hill, dry weight of 1,000 rice grains, and yield. On the other hand, the biochar treatment only showed significant effects on leaf area at 70 DAS, flag leaf area, number of grains per panicle, grain weight after harvest per hill, and dry weight of 1,000 rice grains.
Effectiveness of Seed Biopriming Using Indigenous Rhizobacteria From The Rhizosphere of Upland Rice In Improving The Growth of Local Upland Rice On Ultisol Soil La Ode Safuan; Gusti Ayu Kade Sutariati; Abdul Madiki; Muhidin; Tresjia Corina Rakian; I Made Widana Arsana; I Kadek Pande Prasetia Wiguna; Vit Neru Satrah; Arga Wiradama
International Journal of Science and Environment (IJSE) Vol. 6 No. 3 (2026): August 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i3.771

Abstract

Ultisol soils are widely distributed in Southeast Sulawesi and are characterized by low fertility, acidic pH, low organic matter content, and limited availability of essential nutrients. These constraints contribute to the low productivity of local upland rice and require sustainable technologies that can improve plant growth with lower dependence on synthetic inputs. This study aimed to evaluate the effectiveness of seed biopriming using indigenous rhizobacterial isolates from the rhizosphere of upland rice on the growth of local upland rice cultivated on Ultisol soil. The experiment was arranged in a randomized block design consisting of ten treatments: nine rhizobacterial isolates, namely KNW01, KNW03, KNW05, KNW09, KNW12, BTN15, KNS8, MN06, and BMB01, and a non-inoculated control. Each treatment was replicated three times. The observed variables included plant height, number of leaves, leaf area, number of tillers, root length, plant dry weight, and relative growth rate. The results showed that seed biopriming with indigenous rhizobacteria improved the growth performance of upland rice compared with the control. Isolate KNW05 consistently produced the best response across most growth variables, including plant height of 120.7 cm, leaf area of 1,622 cm², root length of 37.9 cm, plant dry weight of 24.3 g, and relative growth rate of 2.5 g/g/week. KNW05 also increased the number of tillers by 87% compared with the control. These findings indicate that indigenous rhizobacteria, particularly isolate KNW05, have potential as biofertilizer candidates to support sustainable upland rice cultivation on Ultisol soil.
Co-Authors Abdul Madiki Arga Wiradama Arsy Aysyah Anas GUSTI AGUNG KADE ERNA WARDANA Gusti Ayu Kade Sutariati I Kadek Pande Prasetia Wiguna La Ode Safuan Laode Sabaruddin Mirza Arsiaty Arsyad Muhidin Nini Mila Rahni Tresjia Corina Rakian Vit Neru Satrah