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All Journal Journal of Tropical Soils Sains Tanah
Jaka Suyana
Department of Soil Science, Faculty of Agriculture, Sebelas Maret University
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Environmental Science

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Analisis Kemampuan Lahan pada Sistem Pertanian di Sub-DAS Serang Daerah Tangkapan Waduk Kedung Ombo Jaka Suyana; Endang Setia Muliawati
Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 11, No 2 (2014)
Publisher : Faculty of Agriculture, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15608/stjssa.v11i2.245

Abstract

Title : Land Capability Analysis on Farming System at  Serang Sub-Watershed Kedung Ombo Reservoir Catchment Area. Soil conservation in principle is  using the land according to its capability and keep them from damage. This study aims at assessing the land capability classes of farming systems at Serang sub-watershed and evaluate their usages. The results showed that the land capability dominated by Class II (12,096.90 ha, 40.6%), followed by Class III (11,598.92 ha, 38.9%), Class IV (2,879.11 ha, 9.7%), Class I (1,333.14 ha, 4.5%), Class VIII (712.57 ha, 2.4%),  Class VII (684.97 ha, 2.3%) and Class VI (512.84 ha, 1.7%). The main resistance factors are slope and soil deepth for class II; slope,  soil deepth, drainage and erosion for class III; slope and erosion for class IV; and slope for class VIII, VII and VI. The results showed that 94% farm lands at Serang sub-watershed was suitable to its land capability and only 6.0% were not suitable.
Effect of Mulch and Strengthened Terrace Strips on Erosion, Sediment Enrichment Ratio, and Nutrient Loss Through Erosion Jaka Suyana; Nugraheni Nugraheni
JOURNAL OF TROPICAL SOILS Vol 27, No 3: September 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i3.133-145

Abstract

Mulching technology is accessible to farmers and can also reduce soil erosion and nutrient loss through erosion. This research aimed to observe the effectiveness of the combination treatment of strengthened terrace strips and maize stalk mulch on runoff, erosion, sediment enrichment ratio (SER), and nutrient loss through erosion. The experiment was conducted on upland farming on Andisol at the end of the rainy season. The erosion plot experiment was arranged in a Randomized Block Design (RBD) with the treatment of 4 doses of maize stalks mulch (0, 4, 8, and 12 Mg ha-1) and three types of strengthened terrace strips (Jali, Vetiver, and Kalanjana grass) put in groups/blocks, giving 12 experiments. The combination treatment of maize stalk mulch and strengthened terrace strips has not significantly reduced runoff and soil loss. The treatment mulch dose of 12 Mg  ha-1 reduced runoff and soil loss by 9.9% and 21.9% compared to without mulch. The application of maize stalks mulch tends to reduce the sediment concentration and the number of nutrients (N and Organic C) lost through erosion but increases the nutrient concentration in sediments (SER value).
Co-Authors Endang Setia Muliawati Nugraheni Nugraheni