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All Journal Jurnal Irigasi

Dadang Ridwan

Balai Irigasi, Pusat Litbang Sumber Daya Air, Badan Litbang PU

Author-ID : 3980385

Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Engineering

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Desain Jaringan Irigasi Mikro Jenis Mini Sprinkler (Kasus di Laboratorium Outdoor Balai Irigasi) Dadang Ridwan; Alfi Bagus Prasetyo; Marasi Deon Joubert
Jurnal Irigasi Vol 9, No 2 (2014): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Increasing of land use changing causes more limited agricultural land. Micro irrigation is one of the solutions to increase agricultural productivity on a limited land. This study aims to design a micro irrigation system using mini-sprinkler in limited area of outdoor laboratory in Experimental Station of Irrigation, Bekasi. The plant will be cultivated is tomato. The results of design calculations obtained micro sprinkler type that will be used is HADAR 7110 Inverted Rotor as much as 12 units, wetting diameter of 10,2 m, the distance between the lateral and sprinkler 5 m x 5 m. Irrigation water requirement is 26,25 mm/ application. Time of the maximum irrigation is 5,13 hours, with the maximum irrigation interval is 5 days. Total dynamic head (TDH) required is 28,66 m. Considering to fulfillment greater requirement, the selected pump will be has a 0,25 KW BHP, discharge 1,25 liter/second, with total head of 60 m.. Schedule of irrigation water supply is designed based on the needs of water per growth period between 2,22 to 5,07 hours with an interval of 3-5 days.

Desain Jaringan Irigasi Pipa pada Lahan Datar (Studi Kasus : Petak Tersier Pasir Salam 3 Kiri, Daerah Irigasi Panulisan – Cilacap) Dadan Rahmandani; Joko Triyono; Dadang Ridwan
Jurnal Irigasi Vol 9, No 2 (2014): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

The main problem of the application of pressurized pipe irrigation on flat land is not enough energy, so it may cause problem during the operation of the network. Basically, the flow in the pipe can be designed as open flow, so energy requirement can be reduced. However, the application of pipe irrigation system has not been widely studied so it can not be applied to the field scale. This study aims to create a network of pipe irrigation design by gravity with open flow. The research was done by designing pipe irrigation on flat land in Pasir Salam 3 kiri tertiary area. Afterwards the analysis and evaluation of the design requirements was performed in order to get technical feasibility of implementation. As the results, the diameter of the primary pipelines ranging from 8 inches (200 mm) to 10 inches (250 mm) at a flow rate of 0.35 m/s to 0.50 m/s. While the diameter of the secondary and tertiary pipelines between 1 inch (25 mm) to 6 inches (150 mm) with a flow velocity of 0.25 m/s to 0.46 m/s. These results indicate that the design of the application of irrigation pipe networks on flat land in Pasir Salam 3 kiri tertiary area in the Panulisan Irrigation Area was technically feasible considering the results of hydraulic calculation. Thus the water can flow by gravity at velocity ranging from 0.25 to 0.5 m/s and energy availability 0.09 m larger than requirement.

Co-Authors Alfi Bagus Prasetyo Dadan Rahmandani Joko Triyono Marasi Deon Joubert

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