Article Per Year (5 Year)
p-Index From 2021 - 2026
0.61
P-Index
This Author published in this journals
All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Acta Solum
M. Ghufron Chakim
Universitas Pembangunan Nasional Veteran Jawa Timur
Agriculture, Biological Sciences & Forestry Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Effectiveness of Silica Humate in Improving Soil Quality in Paddy Field Contaminated by Industrial Waste Nanda Ajeng Kartika; Wanti Mindari; Siswanto Siswanto; M. Ghufron Chakim
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 5 (2025): October 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i5.1913-1924

Abstract

Soil degradation caused by industrial waste in Sidoarjo Regency has led to a decline in agricultural productivity, necessitating soil rehabilitation efforts. This study aimed to evaluate the effectiveness of silica humate as a soil amendment on paddy fields contaminated by industrial waste. The experiments were arranged according to the Factorial Complete Randomized Design, where the first factor: 3 kinds of industrial waste namely the pharmaceutical, livestock feed, and paper industry. Second factor; 5 doses of silica humat (0, 10, 20, 30, and 40 kg/ha). The parameters included soil pH, cation exchange capacity (CEC), total nitrogen (total-N), and available phosphorus (available-P), measured at 14 and 56 days after application (DAA). Results showed that the effectiveness of silica humate varied depending on the type of industrial waste and increased over time. On land contaminated with pharmaceutical waste, silica humate increased CEC from 44.34 to 52.52 cmol(+)/kg and available-P from 27.21 to 36.69 ppm at low doses. Land contaminated with animal feed waste showed the best results at a dose of 20 kg/ha, while land contaminated with paper industry waste required higher doses. These findings suggest that silica humate is promising as a viable soil amendment strategy, though optimal dosage rates must be tailored to specific industrial contamination types for maximum rehabilitation effectiveness.
Humic Acid and Nitrogen Fertilizer Effects on Nitrogen Availability and Bacterial Population in Sipramin-Affected Paddy Soil Melinda Trisya Yulianto; Wanti Mindari; Rossyda Priyadarshini; Dzarifah Zulperi; M. Ghufron Chakim
Acta Solum Vol. 4 No. 3 (2026): July 2026
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v4i3.3590

Abstract

The accumulation of sodium (Na) due to the continuous use of sipramin reduces the physical, chemical, and biological quality of soil, thereby affecting nitrogen (N) availability and microbial activity. This study aimed to evaluate the combined effect of humic acid and different nitrogen fertilizer sources on nitrogen availability (NH₄+ and NO₃-) and bacterial population dynamics in sipramin-affected paddy soil. The experiment was conducted under greenhouse conditions using a completely randomized factorial design with two factors: humic acid doses (0, 20, 40, and 60 kg ha-¹) and nitrogen fertilizer sources (NPK Phonska, urea, KNO₃, and MAP) at an equivalent rate of 92 kg N ha-¹. Observations included NH₄+, NO₃-, and total bacterial populations, and data were analyzed using analysis of variance (ANOVA). The results showed that the interaction between humic acid and nitrogen fertilizer did not significantly affect nitrogen availability. However, both factors individually showed significant effects on NO₃- availability, indicating their role in influencing nitrogen dynamics. Bacterial populations increased from 7 to 21 Day After Treatment (DAT) and decreased at 42 DAT, reflecting temporal microbial dynamics during incubation. Although changes in bacterial populations coincided with variations in nitrogen forms, this relationship could not be directly confirmed due to the limitation of total culturable bacteria analysis. These findings highlight the importance of humic acid and nitrogen fertilizer management in regulating nitrogen dynamics under high-Na soil conditions, while further studies on specific microbial groups are needed to better understand the underlying mechanisms.
Co-Authors Daljit Singh Karam Dzarifah Zulperi Fitri Wijayanti Melinda Trisya Yulianto Nanda Ajeng Kartika Priyadarshini, Rossyda Qonita Mumtazia Kamilah Siswanto Siswanto Wanti Mindari