Pemanfaatan Limbah Lumpur Padat (Sludge) Pabrik Pengolahan Kelapa Sawit Sebagai Alternatif Penyediaan Unsur Hara Di Tanah Ultisol
Utilization Of Solid Sewage (Sludge) Palm Oil Mills As An Alternative Supply Of Nutrients In Ultisol
DOI:
https://doi.org/10.32734/joa.v5i2.2538Keywords:
sludge, ultisol, unsur haraAbstract
Pemanfaatan sludge pabrik pengolahan kelapa sawit masih belum optimal, oleh sebab itu perlu pengkajian pemanfaatan sludge sebagai alternatif penyediaan unsur hara di tanah Ultisol. Penelitian dilaksanakan selama 4 bulan dimulai pada bulan November 2015 hingga Maret 2016 di rumah kasa Fakultas Pertanian Universitas Sumatera Utara dan analisis tanah serta tanaman dilakukan di Laboratorium Riset dan Teknologi Fakultas Pertanian USU. Penelitian ini menggunakan rancangan acak kelompok non faktorial dengan tanpa perlakuan (Z0), 21,25 g sludge/pot (Z1), 42,50 g sludge/pot (Z2), 63,275 g sludge/pot (Z3), 85,00 g sludge/pot (Z4), 106,25 g sludge/pot (Z5), 127,50 g sludge/pot (Z6), 148,75 g sludge/pot (Z7), dan 3 ulangan. Hasil penelitian menunjukkan pemberian sludge berpengaruh nyata dalam meningkatkan unsur hara dan pertumbuhan tanaman jagung di tanah Ultisol yaitu : pH tanah, C-organik, P tersedia, tinggi tanaman, jumlah daun, diameter batang, berat kering tajuk dan serapan P tanaman. Akan tetapi tidak berpengaruh nyata dalam meningkatkan N total, K tukar, dan KTK tanah Ultisol.
Utilization of sludge palm oil mills as an alternative supply of nutrients in Ultisol has not optimal. Therefore it needs assessment to utilization of sludge palm oil mills. The experiments was conducted for four months began in November to March in the screen house of Agriculture Faculty of North Sumatra University and the analysis carried out in the Laboratory of Research and Technology Faculty of Agriculture USU. This study uses a randomized block design non factorial with no treatment (Z 0), 21.25 g sludge / pot (Z 1), 42.50 g sludge / pot (Z 2), 63.275 g sludge / pot (Z 3), 85.00 g sludge / pot (Z 4), 106.25 g sludge / pot (Z 5), 127.50 g sludge / pot (Z 6), 148.75 g sludge / pot (Z 7), and 3 replications. The results showed significant sludge Award in increasing nutrient and growth of corn plants in Ultisol namely: soil pH, organic C, available P, plant height, leaf number, stem diameter, shoot dry weight and P uptake of plants. But no significant effect in increasing total N, K exchange, and CEC Ultisol.
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