ABSTRAK
ARMADA KARO-KARO : Perubahan Beberapa Sifat Kimia Tanah Ultisol Akibat Pemberian Beberapa Bahan Organik dan Waktu Inkubasi, dibimbing oleh Ir. Alida Lubis, M.S. dan Ir. Fauzi, M.P.
Penelitian ini dilaksanakan di Laboratorium Fisika Tanah, Fakultas Pertanian Universitas Sumatera Utara, Medan dan analisis tanah dilakukan di Laboratorium Analitik PT. Socfindo Medan pada bulan Maret 2016 sampai Mei 2016
Percobaan ini didesain dengan menggunakan Rancangan Acak Lengkap faktorial yang terdiri dari 2 faktor dan 3 ulangan. Faktor pertama adalah pemberian bahan organik yang dibagi atas perlakuan kompos Tithonia, kompos kulit durian, kompos tandan kosong kelapa sawit, pupuk kandang ayam, campuran Tithonia dan pupuk kandang ayam, campuran kulit durian dan pupuk kandang ayam, campuran tandan kosong kelapa sawit dan pupuk kandang ayam. Faktor kedua adalah waktu inkubasi yaitu 1 minggu dan inkubasi 2 minggu.
Parameter yang diamati adalah pH H2O tanah, C-Organik, N-Total, P –Total, (K-dd) tanah.
Hasil penelitian menunjukkan pemberian kompos Tithonia, kompos kulit durian, kompos tandan kosong kelapa sawit, pupuk kandang ayam dan campuran kompos dengan pupuk kandang ayam berpengaruh nyata terhadap pH H2O tanah, C-Organik, N-Total, P–Total, (K-dd) tanah. Semakin lama waktu inkubasi nyata menurunkan pH tanah. Perlakuan waktu inkubasi berpengauh tidak nyata meningkatkan kadar C-Organik, Nitrogen-Total, Fosfor (P) –Total, Kalium dapat dipertukarkan (K-dd) tanah. Kombinasi perlakuan pemberian bahan organik dan waktu inkubasi tidak berpengaruh nyata terhadap pH H2O tanah, kadar C-Organik, Nitrogen-Total, Fosfor (P) –Total, Kalium dipertukarkan (K-dd) tanah.
Kata kunci : Bahan Organik, Waktu Inkubasi, Sifat Kimia Tanah Ultisol.
ABSTRACT
ARMADA KARO-KARO : Some Changes in Chemical Properties on Ultisol Land Giving Due Some of Organic Matter and Incubation Period, supervised by Ir. Alida Lubis, M.P. and Ir. Fauzi, M.P.
This research was conducted in Physical Soil Laboratory, Agriculture Faculty , University of North Sumatera, Medan and soil analys in Analitical Laboratory of PT. Socfindo Medan in Maret-Mey 2016.
This research used completly randomized design factorial, with 2 factors : factor 1 : organic matter (B) are B0 = without organic matter, B1 : compost Tithonia compost (10 gr/pot), B2 = durian’s shell compost (10 gr/pot), B3 = TKKS compost (10 gr/pot), B4 = chicken manure (10 gr/pot), B5 = Tithonia compost + chicken manure, B6 = durian’s shell compost + chicken manure (10 gr/pot), B7 = TKKS compost + chicken manure (10 gr/pot). Factor 2 are incubation period (I) are I1 = incubation 1 month and I2 = incubation 2 month.
The result showed giving due some of organic matter are Tithonia
compost, durian’s shell compost, TKKS compost, chicken manure, and the mixed
compost with chicken manure can alter the pH, C-Organic, totally soil-N, totally soil-P, and K exchange soil in the Land Ultisol. At the pH H2O parameter showed that the time incubation added can decreased the pH. The period incubation showed not alter significant the C-Oraganic, totally soil-N, totally soil-P, and K exchange soil in the Land Ultisol. The combination of giving due some organic
matter treatments and period incubation treatments was can’t alter the pH, C -Organic, totally soil-N, totally soil-P, and K exchange soil in the Land Ultisol.
Keyword : Organic Matter, Period Incubation, Chemical Properti Ultisol land.
