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All Journal JURNAL GALUNG TROPIKA Jurnal Dedikasi Jurnal Agrisistem Nanggroe: Journal Of Scholarly Service
Ida Suryani
Fakultas Teknologi Pertanian, Universitas Cokroaminoto Makassar
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Journal : JURNAL GALUNG TROPIKA

 1 
Perubahan Konduktivitas Hidraulik dan Daya Hantar Listrik Tanah Akibat Pemberian Urea dan Bahan Organik pada Tanah Ultisol Ida Suryani
JURNAL GALUNG TROPIKA Vol 10 No 3 (2021)
Publisher : Fapetrik-UMPAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/jgt.v10i3.805

Abstract

This study aimed to determine the effect of urea added with organic matter in a high C/N (50-70) or low C/N (10-20) ratio on the hydraulic conductivity and electrical conductivity of Ultisol soil. The research was arranged in a Split Plot Design. The main plot is organic matter, ie, without organic matter, calopogonium leaves, and rice straw 1,275 x 10-8 kg/ha, equivalent to 15.3 g/pipe. Sub-plots were urea doses consisting of 0, 100, and 300 kg/ha, equivalent to 0 g/pipe, 0.0425 g/pipe, and 0.0825 g/pipe, respectively, applied to Ultisol soil. Sample of Ultisol soil was taken at a depth of 0 -120 m which were air-dried, then sifted, mixed with TSP, organic matter, and urea according to treatment. The sample was put in a PVC tube (pipe) with the bottom covered with fine gauze to hold the soil but still allow percolation. . Incubation was carried out for two weeks. Observations were made after the incubation period, including hydraulic conductivity and electrical conductivity. The application of organic matter and urea at a dose of 300 kg/ha can increase the electrical conductivity of the soil. Adding the main organic matter with a high C/N ratio (rice straw) increases the hydraulic conductivity. Electrical conductivity (EC) is a good indicator in explaining the dispersive effect of urea and the effect of flocculation of organic matter. High electrical conductivity always results in high hydraulic conductivity in Ultisol soils.
Perubahan Konduktivitas Hidraulik dan Daya Hantar Listrik Tanah Akibat Pemberian Urea dan Bahan Organik pada Tanah Ultisol Ida Suryani
JURNAL GALUNG TROPIKA Vol 10 No 3 (2021)
Publisher : Fapetrik-UMPAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/jgt.v10i3.805

Abstract

This study aimed to determine the effect of urea added with organic matter in a high C/N (50-70) or low C/N (10-20) ratio on the hydraulic conductivity and electrical conductivity of Ultisol soil. The research was arranged in a Split Plot Design. The main plot is organic matter, ie, without organic matter, calopogonium leaves, and rice straw 1,275 x 10-8 kg/ha, equivalent to 15.3 g/pipe. Sub-plots were urea doses consisting of 0, 100, and 300 kg/ha, equivalent to 0 g/pipe, 0.0425 g/pipe, and 0.0825 g/pipe, respectively, applied to Ultisol soil. Sample of Ultisol soil was taken at a depth of 0 -120 m which were air-dried, then sifted, mixed with TSP, organic matter, and urea according to treatment. The sample was put in a PVC tube (pipe) with the bottom covered with fine gauze to hold the soil but still allow percolation. . Incubation was carried out for two weeks. Observations were made after the incubation period, including hydraulic conductivity and electrical conductivity. The application of organic matter and urea at a dose of 300 kg/ha can increase the electrical conductivity of the soil. Adding the main organic matter with a high C/N ratio (rice straw) increases the hydraulic conductivity. Electrical conductivity (EC) is a good indicator in explaining the dispersive effect of urea and the effect of flocculation of organic matter. High electrical conductivity always results in high hydraulic conductivity in Ultisol soils.
KAJIAN SIFAT FISIKA KIMIA TANAH INCEPTISOL DI BERBAGAI KELERENGAN DAN KEDALAMAN TANAH PADA AREAL PERTANAMAN KAKAO Ida Suryani; Juni Astuti; Nurul Muchlisah
JURNAL GALUNG TROPIKA Vol 11 No 3 (2022)
Publisher : Fapetrik-UMPAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/jgt.v11i3.1014

Abstract

This study aims to examine some of the physical and chemical characteristics of the inceptisol soil on various slopes and soil depths in the cocoa planting area. The method used in this research is descriptive method by conducting surveys and taking soil samples based on land position, namely slopes of 3%, 15%, and 40% at depths of 0-25 cm and 25-50 cm, respectively. The results showed that the soil texture on all slopes and soil depths was clay texture. The percentage of clay in the upper layer (0-25 cm) was higher than that in the lower layer (25-50 cm) on the 3 and 40% slopes, while on the 15% slope the opposite occurred. The pH value of each slope and depth ranges from 4.52-5.35 with acid criteria. Bulk density on the slope of 3% and 40% on the top layer (0-25 cm) is lower than the bottom layer (25-50 cm), except for the 15% slope. The bulk density of the top and bottom layers is in the same range. Porosity and soil permeability decrease with the slope height both at the top soil depth (0-25 cm) and at the bottom depth (25-50 cm). Organic C, total N, available P and available K of each slope (3%, 15%, and 40%) decreased from the upper layer (0-25 cm) to the lower layer (25 50 cm).
Co-Authors Andi Asni Andi Tenri Fitriyah Baharuddin Baharuddin Juni Astuti Muhammad Amir Munirah Munirah Nurul Muchlisah