SURVEI DAN PEMETAAN STATUS FOSFAT LAHAN SAWAH PADA DAERAH IRIGASI BAHAL GAJAH/TIGA BOLON KECAMATAN SIDAMANIK KABUPATEN SIMALUNGUN

Meilissa Damayanti Lumban Gaol, Supriadi Supriadi, Mariani Sembiring

Abstract


Survey and mapping phosphorus status on irrigated rice field at Bahal Gajah and Tiga Bolon
village in Sidamanik Subdistrict. This research purpose to make a map phosphate status on wet rice
field in irrigation area Bahal Gajah/Tiga Bolon. The research start to do on May until December
2012. Method of sample take use free grid survey method with semi detail survey scale. Result of
analysis process using regreation method, with Geografis Information System (GIS) program.
Parameter that analysis in laboratory is phosphate available and phosphate total. The result of
research showed that phosphate available divided by 3 status such as; medium (6,087 ha), high
(136,005 ha), and highest (286,101 ha). Phosphate total divided by 3 status such as; medium
(48,393 ha), high (109,445 ha), and highest (269,263 ha).
Key words: mapping, phosphorus

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Program studi Agroteknologi

Fakultas Pertanian

Jl. Prof. A. Sofyan no. 3

Kampus Universitas Sumatera Utara

Padang Bulan- 20155

Medan-Sumatera Utara

E ISSN (2337-6597)