This research was carried out in the research area of Balai Benih Induk Tanjung Selamat, at Pendidikan Road of Tanjung Selamat , Medan Tuntungan, Medan at altitude ± 35 m asl. This experiment was conducted from October to December 2016. The experimental method used was factorial randomized block design (RBD) with 2 factors of treatment ie the dose of biochars ie control, 5 ton/hectare, 10 ton/hectare, and 15 ton/hectare and concentration of liquid organic fertilizer ie control, 5 ml/liter of water, 10 ml/liter of water, 15 ml/liter of water. The results showed that the biochar treatment had significant effect on root volume variables, production per sample and production per plot, the best dose of biochar is 15 ton/hectare. Liquid organic fertilizer treatment significantly affect the variables observed leaf area, root volume and production per plot, the best concentration of liquid organic fertilizer is 15 ml/Liter of water while the interaction between the treatment of liquid organic fertilizer and biochar treatment had no significant effect on all observed variables. ABSTRAKPenelitian ini dilaksanakan di lahan penelitian Balai Benih Induk Tanjung Selamat, jalan Pendidikan Kelurahan Tanjung Selamat, Kecamatan Medan Tuntungan, Medan pada ketinggian tempat ± 35 m dpl. Penelitian ini dilaksanakan pada bulan Oktober sampai dengan Desember 2016. Metode percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK) faktorial dengan 2 faktor perlakuan yaitu dosis biochar yaitu kontrol, 5 ton/hektar, 10 ton/hektar, 15 ton/hektar dan konsentrasi pupuk organik cair yakni kontrol, 5 ml/liter air, 10 ml/liter air, 15 ml/liter air. Hasil penelitian menunjukkan bahwa perlakuan biochar berpengaruh nyata terhadap peubah amatan volume akar, produksi per sampel dan produksi per plot, perlakuan biochar terbaik ialah 15 ton/hektar.Perlakuan pupuk organik cair berpengaruh nyata terhadap peubah amatan luas daun, volume akar dan produksi per plot, perlakuan pupuk organik cair terbaik ialah 15 ml/liter air sedangkan interaksi antara perlakuan pupuk organik cair dan perlakuan biochar tidak berpengaruh nyata terhadap semua peubah amatan.Kata kunci : biochar, pupuk organik cair, jagung manis PENDAHULUANHampir semua bagian dari tanaman jagung manis memiliki nilai ekonomis. Beberapa bagian tanaman yang dapat dimanfaatkan diantaranya, batang dan daun muda untuk pakan ternak, batang dan daun tua (setelah panen) untuk pupuk hijau/ kompos, batang dan daun kering sebagai bahan bakar pengganti kayu bakar, buah jagung muda untuk sayuran, perkedel, bakwan, dan
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