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Rehabilitasi Bangunan Dan Saluran Irigasi Di Subak Sembung Kota Denpasar: Indonesia I Gusti Ayu Widi Agripina; Hari Siswoyo; Sumiyati Sumiyati
J-ENSITEC Vol. 9 No. 02 (2023): May 2023
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jensitec.v9i02.5093

Abstract

Subak Sembung is intended to be the keeper of the green lane area and a large water catchment area. Subak Sembung has an area of 103 ha and a tertiary irrigation canal of 5.1 km. Based on the survey results at the study area conducted in July 2022, there are several damage of the buildings and irrigation canals that had an impact on the supply of irrigation water to rice fields, especially for farmers who have downstream rice fields. Irrigation canals damage causes by the uneven water distribution by farmers. The purpose of this study is to repair and improve the function of buildings and irrigation canals therefore they can facilitate irrigation water supply and be able to reach wider agricultural land. This research was conducted using survey and interview method. The results showed that there was 1 (one) building and 4 (four) irrigation channels damage that were disrupted the irrigation water supply, therefore the rehabilitation cost needed would be Rp. 746,243,500,-. The cost is planned for the next 1 (one) year period.
Increasing Physical Soil Quality by Using Rice Straw Biomass Sumiyati Sumiyati; I Wayan Tika; Ni Nyoman Sulastri; Mentari Kinasih
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1006-1012

Abstract

Paddy straw as an agricultural waste can be returned to the soil to increase the organic matter content. This study aims to determine the optimum inoculant treatment of rice paddy straw on soil quality. The straw handling was carried out by spreading the straw on paddy fields and sprayed with four inoculant treatments (0, 3, 6, 9, and 12 L/ha). The incubation process was carried out for 21 days and incorporated in the soil through plowing. Each treatment was repeated three times so that the total treatment was 15 units. The variables observed in each treatment were soil quality. The soil quality parameters observed were particle density, bulk density, porosity, field capacity and pH. ANOVA statistical analysis which was continued by the Tukey HSD Post Hoc Test to determine the effect of treatment on soil quality. The results showed that the inoculant treatments showed a significant difference (p-value=0.05) in soil volume, density, and porosity. P4 gave the optimum results which are statistically not significantly different from P3. P4 shows the physical properties of the soil which consist of the soil bulk density of 0.61 g/cm3; particle density 1.74 g/cm3; porosity was 64.91%, and pH 6.68. The utilization of straw biomass as source of organic material contributes to zero waste rice cultivation. Keywords: Effective microorganisms, Rice straw, Soil density, Soil pH, Soil porosity.