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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Bakti Wisnu Widjajani
Universitas Pembangunan Nasional "Veteran" Jawa Timur
Agriculture, Biological Sciences & Forestry Engineering

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Evaluation of Land Suitability for Sugar Cane Cultivation Thariq Naufal Haq; Bakti Wisnu Widjajani; Siswanto Siswanto
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.v14i5.1593-1603

Abstract

Land suitability is an important aspect in land planning and management, especially to determine the potential of land to support various agricultural and forestry activities. This study aims to evaluate the land suitability in the UPN Veteran East Java State Defense Garden located in Wonosalam District, Jombang Regency. The methodology used in this study involves the analysis of various factors such as soil texture, slope, soil type, rainfall, and water availability. Data were collected through field observations, soil sampling, and literature reviews related to soil physical and chemical characteristics. The evaluation results showed that most of the garden area has good suitability for certain agricultural activities, with some areas requiring special handling to optimize land use. The main factors affecting land suitability in this area include varying slope gradients and organic matter content in the soil. Recommendations from the results of this evaluation include better soil management, including the application of soil conservation techniques, and the selection of plant types that are appropriate to the characteristics of the land. This study is expected to provide useful information for garden planning and management to achieve optimal and sustainable productivity.
Effect of Land Use on Soil Water Storage in the Effective Depth (0–60 cm) Using the Water Balance Method Muara Dhika; Bakti Wisnu Widjajani; Maroeto Maroeto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 6 (2025): December 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i6.2414-2423

Abstract

Land use changes significantly impact groundwater storage, which is crucial for maintaining ecosystem balance and supporting agriculture. This study aims to evaluate groundwater storage capacity across various land uses in the Gunting Sub-watershed, Wonosalam District, Jombang Regency, East Java. Field surveys and soil sampling were conducted across three land use types: pine-coffee agroforestry, pine monoculture, and annual crops at effective soil depths (0-60 cm). The study was conducted using a water balance method and lasted for one year, from August 2022 to July 2023. Water balance components consisting of effective rainfall, surface runoff, percolation, and evapotranspiration, as well as soil properties such as organic carbon content, porosity, and texture, were analyzed. The results showed that agroforestry had the highest water storage (370,863.44±176.67 mm/year), followed by pine monoculture (307,153.36±229.98 mm/year), and annual crops (239,497.30±222.26 mm/year). Statistical tests showed that differences between land uses were not significant (p > 0.05). Organic matter content was the dominant factor influencing soil water storage (R² = 0.9189), followed by porosity (R² = 0.3019) and clay fraction (R² = 0.0172). All land use types showed a positive water balance throughout the year, with peak water storage occurring in February–May.
Analisis Indeks Kualitas Tanah Pada Beberapa Satuan Penggunaan Lahan Di Sub DAS Manten Pradana Fajar Gumilar; Maroeto Maroeto; Bakti Wisnu Widjajani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.470-477

Abstract

The Manten Sub-watershed faces land degradation problems due to improper land management. This study aims to identify the soil physical quality index across various land use types in the Manten Sub-watershed and to evaluate potential improvement alternatives. A descriptive quantitative method was applied by analyzing the Soil Physical Quality Index (SPQI) through the measurement of soil physical parameters such as bulk density, particle density, texture, structure, porosity, permeability, and soil organic carbon. Three land use types were evaluated in this research, including dryland or upland, rice field, and garden. Five sampling points were determined to score SPQI for each land use type. The results show that dryland farming and paddy fields can be classified as moderate to slightly good, with SPQI score values ranging from 0.57–0.73 and 0.63–0.70, respectively. Meanwhile, garden land use is classified as fairly good with SPQI score values of 0.70–0.73. Suggested improvement alternatives include the addition of organic matter and the implementation of soil conservation practices, such as proper tillage, cover cropping, and crop rotation.
Co-Authors Ir, MT., Siswanto Maroeto Maroeto Muara Dhika Pradana Fajar Gumilar Thariq Naufal Haq