Pemanfaatan Air Tanah Dangkal untuk Irigasi Padi Menggunakan Pompa Berbahan Bakar LPG

Agus Haryanto, Suharyadi Suharyadi, Budianto Lanya

Abstract


Abstract
The objective of this study was to evaluate performance of LPG-fueled single cylinder pump enginein utilizing shallow groundwater for rice field irrigation. Research was conducted in Baktirasa Village, Subdistrict of Sragi, Regency of South Lampung during planting session of September–December 2015 by observing and analyzing technical and economical performance of LPG-fueled pump engine. Observation was performed on the depth of groundwater before and after pumping, pumping duration, discharge, LPG consumption, and depth of standing water. Irrigation cost was evaluated using local prices for installation and manpower. Results of the research showed that shallow groundwater is potential to be explored as asource of paddy field irrigation. Depth of water table was substantially low at 3.41 m and decrease to 4.83m after continuous pumping for about 6.5 hours. The LPG-fueled pump engine worked smoothly at an average gas consumption of 0.464 kg/h with a field capacity of 0.0190 ha/h and a discharge rate of 14.58 m3/h. The distribution uniformity of 92.28% was achieved with average depth of standing water of 4.12 cm. The cost of irrigation operation was IDR 226,875.23/ha, lower than leasing one (IDR 400,000.00 /ha).

Abstrak
Penelitian ini berujuan untuk mengevaluasi kinerja mesin pompa satu silinder berbahan bakar LPG dalam memanfaatkan air tanah dangkal untuk irigasi sawah pada musim kering. Penelitian dilakukan di Desa Baktirasa, Kecamatan Sragi, Lampung Selatan dengan menganalisis kinerja teknis dan ekonomi penggunaan pompa berbahan bakar LPG pada musim tanam September–November 2015. Pompa irigasi 4.9 hp diuji sebanyak lima kali pada lima petak sawah (masing-masing 1250 m2). Parameter yang diamati meliputi kedalaman air tanah sebelum dan sesudah pengoncoran, lama pengoncoran, debit pompa, konsumsi LPG, tinggi genangan air, dan keseragaman distribusi (DU). Biaya irigasi dihitung berdasarkan harga setempat untuk pemasangan sumur dan upah kerja. Hasil penelitian menunjukkan bahwa air tanah dangkal di Desa Baktirasa berpotensi untuk dikembangkan sebagai sumber irigasi. Kedalaman air tanah cukup rendah, yaitu 3.41 m sebelum pemompaan dan turun menjadi 4.83 m setelah pemompaan selama sekitar 6.5 jam terus-menerus. Pompa berbahan bakar LPG bekerja dengan baik dengan kapasitas 0.0190 ha/jam pada debit 14.58 m3/jam, dan konsumsi LPG 0,464 kg/jam. Ketinggian genangan rata-rata 4.12 cm dengan DU 92.28%. Biaya irigasi adalah Rp 226,875.23/ha per sekali oncoran, lebih rendah daripada sewa
Rp 400.000,00/ha.


Keywords


shallow groundwater, irrigation, pump, LPG, cost.

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References


Ascough, G.W. and G.A. Kiker. 2002. The effect

of irrigation uniformity on irrigation water

requirements. Water Science and Application

Vol. 28(2): 235-242.

Ayars, J.E., E.W. Christen, R.W. Soppe and W.S.

Meyer. 2006. The resource potential of in-situ

shallow ground water use in irrigated agriculture:

A review. Irrigation Science Vol. 24: 147-160.

Bortolini, L. and M. Martello. 2014. Effects of water

distribution uniformity on waxy corn (Zea mays

L.) yield: Preliminary Results. Journal of Water

Resource and Protection Vol. 6: 1037-1044.

Bouman, B.A.M. and T.P. Tuong. 2001. Field water

management to save water and to increase its

productivity in irrigated lowland rice. Agriculture

Water Management Vol. 49: 11-30.

BRI (Bank Rakyat Indonesia). 2016. Kredit Usaha

Rakyat BRI. http://www.bri.co.id/articles/61 (10

Desember 2016).

Burt, C.M., A.J. Clemmens, T.S. Strelkoff, K.H.

Solomon, R.D. Bliesner, L.A. Hardy, T.A.

Howell and D.E. Eisenhauer. 1997. Irrigation

performance measures: Efficiency and

uniformity. Journal of Irrigation and Drainage

Engineering Vol. 123(6): 423-442.

Camp, C.R., E.J. Sadler and W.J. Busscher. 1996.

A comparison of uniformity measures for drip

irrigation systems. Transactions of the ASAE

Vol. 40(4):1013-1020.

Fibria, M. dan Maymuchar. 2012. Pemanfaatan

LPG sebagai bahan bakar sepeda motor dan

karakteristik minyak lumasnya. Lembaran

Publikasi Minyak dan Gas Bumi, Vol. 46(1): 35-

Grismer, M.E. and K.M. Bali 2015. Drought Tip – Use

of Shallow Groundwater for Crop Production.

Agricultural and Natural Resources Publication

: 6 p.

Kalsim, D.K. 2010. Irigasi Pompa, dalam Kalsim,

D.K., B.I. Setiawan, A. Sapei, Prastowo, dan

Erizal (ed). Perancangan Irigasi dan Drainase

Interaktif Berbasis Teknologi Informasi.

Departemen Teknik Pertanian, Fakultas

Teknologi Pertanian, Institut Pertanian Bogor.

Legiyem, 2012. Faktor-faktor yang Mempengaruhi

Produksi Padi Di Rawa Sragi Kabupaten

Lampung Selatan (Tesis). Program Studi

Magister Manajemen, Program Pasca Sarjana,

Universitas Terbuka.

Liu, E., S.Y. Yue and J. Lee. 1997. A Study on LPG

As A Fuel For Vehicles. (Report). Legislative

Council Secretariat, Hong Kong. 27 p.

Maftukhah, R., R. Erni, H.P. Benito, R. Sri, and S.A.

Sigit, 2015. Shallow water depth management

to enhance rice performances under System

of Rice Intensification (SRI) framework. Jurnal

Irigasi Vol. 10(1): 41-48.

Namara, R.E., J.A. Awuni, B. Barry, Giordano, M.,

L. Hope, E.S. Owusu and G. Forkuor. 2011.

Smallholder shallow groundwater irrigation

development in the upper east region of Ghana.

(IWMI Research Report 143). International

Water Management Institute, Colombo, Sri

Lanka: 35p. doi: 10.5337/2011.214.

Notohadiprawiro, T. 2006. Rasionalisasi

penggunaan sumberdaya air di Indonesia.

Jurusan Ilmu Tanah, UGM, Yogyakarta.

http://soil.faperta.ugm.ac.id/tj/19XX/19xx%20

RASIONALISASI.pdf

RNAM (Regional Network for Agricultural

Machinery). 1995. Test Codes & Procedures

for Farm Machinery. Economic and Social

Commission for Asia and the Pacific, UN,

Bangkok.

Sinurat, M.R. 2000. Analisis Kelembagaan dalam

Pengelolaan Sumberdaya Pesisir Di Wilayah

Pesisir Timur Rawa Sragi Kabupaten Lampung

Selatan (Tesis). Program Studi Pengelolaan

Sumberdaya Pesisir dan Lautan, Program

Pasca Sarjana, Insitut Pertanian Bogor.

Subagyono, K., A. Dariah, E. Surmaini dan U.

Kurnia. 2004. Pengelolaan Air Pada Tanah

Sawah,dalam Tanah Sawah dan Teknologi

Pengelolaannya (Editor: Agus, F., Adimihardja,

A., Hardjowigeno, S., Fagi, A.M., dan Hartatik,

W.). Pusat Penelitian dan Pengembangan

Tanah dan Agroklimat (Puslitbangtanak), Bogor.

p. 223-226.

Susastriawan, A.A.P., J. Waluyo and K. Muhajir.

Development of LPG motorcycle for rural

village in Indonesia. International Journal of

Engineering Research & Technology (IJERT)

Vol. 4(07): 507-509.

Wahed, M.H.A., M. Medici and G. Lorenzini. 2016.

Sprinkler irrigation uniformity: Impact on the

crop yield and water use efficiency. Journal of

Engineering Thermophysics Vol. 25(1): 117-125.

Wiryawan, A.G.P. 2015. Efektivitas Pengelolaan

Irigasi Dengan Sumur Pompa Di Kecamatan

Negara, Kabupaten Jembrana. (Tesis). Program

Pascasarjana, Universitas Udayana, Denpasar.

Yanti, D dan D. Setiawan. 2012. Analisa nilai

manfaat irigasi pompa dangkal ditinjau dari

keberlanjutan sumber daya air untuk pertanian.

Jurnal Teknologi Pertanian Andalas. Vol. 16: 72-




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