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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Litbang Kota Pekalongan
Ngadisih Ngadisih
Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Computer Science & IT Engineering Public Health

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Mitigasi Dampak Banjir dan Rob Terhadap Lahan Pertanian di Kota Pekalongan Muhammad Wiji Nur Huda Huda; Murtiningrum Murtiningrum; Hanggar Ganara Mawanda; Muhammad Khoiru Zaki; Prieskarinda Lestari; Chandra Setyawan; Bayu Dwi Apri Nugroho; Ngadisih Ngadisih
JURNAL LITBANG KOTA PEKALONGAN Vol. 21 No. 1 (2023)
Publisher : Badan Perencanaan Pembangunan, Penelitian dan Pengembangan Daerah (Bappeda) Kota Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54911/litbang.v21i1.235

Abstract

Pekalongan City has an area of 46,42 km2. Based on land use, 19% of the area, which is 886 ha, is agricultural land. The current flood and tidal disasters have an impact on various sectors, including agriculture. Efforts to deal with this problem have been made by the central, provincial and city governments. However, these efforts have not provided a real solution because floods and tidal disasters continue to expand. Therefore, research is needed which aims to identify the impact of flooding and tidal on agricultural land and provide recommendations for mitigating the impacts of flooding and tidal on agricultural land in Pekalongan City. The research was conducted through data collection methods, data quality testing and analysis, disaster mitigation scenarios, and research outputs. Based on the parameters of class III water quality standards, the BOD values at S1, S3, and S6 were 12.5; 27.6; 7.6 mg/L and the COD values at S2, S3, S6 were 53.7; 88.7; 46 mg/L which exceeds/does not meet the requirements. Therefore, it is recommended that good water governance management, water regulation with the mini polder concept, carry out reclamation of affected agricultural land, manufacture of household domestic sewage sanitation channels, and manufacture of purifier ponds.
Estimation of Irrigation Water Requirement for Land Preparation of Ricefield in Irrigation Modernization Andri Andri; Murtiningrum Murtiningrum; Ngadisih Ngadisih
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 4 (2022): Desember 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i4.700-712

Abstract

Irrigation water requirement for irrigation for land preparation is the highest water requirement in rice cultivation therefore it was essential to determine it based on recent condition in order to support the irrigation modernization. This research aimed to determine the irrigation requirement and tillage specific drafts based for various water ponding level in rice field as well as to determine parameters of irrigation requirement for land preparation to support irrigation modernization. Determination of irrigation water requirement is computed based on equation developed by Van de Goor and Zijlstra (1968) with variation of water volume supplied for saturation and ponding level. Variation of water supplied during land preparation resulted in the variation of tillage specific drafts according to empirical formula developed by Kisu (1972). Water level ponding of 0 mm, 5 mm, 30 mm, and 74 mm resulted in water requirements for land preparation (Project Water Requirement/PWR) of 112 mm, 122 mm, 139 mm, and 198 mm, respectively. The mentioned water ponding level resulted in the tillage specific draft of 1.131 kg/cm2, 1.101 kg/cm2, 0.886 kg/cm2, and 0.954 kg/cm2, respectively. The thicker water ponding in the rice field, the more water requirement for land preparation, but the less energy needed for tillage. Recommended irrigation requirement for land preparation was 139 mm with 15-day duration of land preparation.  Keywords: Irrigation modernization, Irrigation requirement, Land preparation, Tillage specific draft, Ponding
Co-Authors Andri Andri Bayu Dwi Apri Nugroho Chandra Setyawan, Chandra Hanggar Ganara Mawanda Muhammad Khoiru Zaki Muhammad Wiji Nur Huda Huda Murtiningrum Murtiningrum Murtiningrum Murtiningrum Prieskarinda Lestari