Pengaruh Pupuk Npk Majemuk Formula Baruterhadap Produktivitas Dan Rendemen Tebu; the Influence of Granular and Briquette Compound Fertilizers on Growth, Productivity, and Sugar Content of Sugarcane

Program intensifikasi tebu dalam rangka meningkatkan produksi dan hablur dapat dilakukan dengan penambahan hara tanah melalui aplikasi pupuk. Penelitian ini bertujuan mengevaluasi efektivitas pupuk majemuk NPK (22% N:12% P2O5:12% K2O) berbentuk granul dan briket terhadap pertumbuhan, produktivitas, dan rendemen tebu. Penelitian dilakukan pada bulan November 2012-Oktober 2013 di Kebun Percobaan Kalipare, Kabupaten Malang. Perlakuan meliputi (1) 600 kg/ha NPK granul (G1), (2) 700 kg/ha NPK granul (G2), (3) 800 kg/ha NPK granul (G3), (4) 1.000 kg/ha NPK granul (G4), (5) 600 kg/ha NPK granul (G5) + 300 kg/ha Ammonium Sulfat (AS), (6) 700 kg/ha NPK granul (G6) + 300 kg/ha AS, (7) 800 kg/ha NPK granul (G7) + 300 kg/ha AS, (8) 1.000 kg/ha NPK granul (G8) + 300 kg/ha AS, (9) 600 kg/ha NPK briket (B1), (10) 700 kg/ha NPK briket (B2), (11) 800 kg/ha NPK briket (B3), (12) 1000 kg/ha NPK briket (B4), (13) 600 kg/ha NPK briket (B5) + 300 kg/ha AS, (14) 700 kg/ha NPK briket (B6) + 300 kg/ha AS, (15) 800 kg/ha NPK briket (B7) + 300 kg/ha AS, (16) 1.000 kg/ha NPK briket (B8) + 300 kg/ha AS, (17) 600 kg/ha (N15, P15, K15) + 500 kg/ha AS (pembanding/aplikasi petani). Rancangan disusun secara acak kelompok dan diulang tiga kali. Hasil penelitian menunjukkan bahwa perlakuan B8, B6, B7, dan G8 menghasilkan pertumbuhan, produktivitas, rendemen, dan hasil hablur lebih tinggi dibanding dengan pembandingnya. Perlakuan B6 paling efisien dalam meningkatkan produktivitas (22,29 ton/ha), hasil hablur (2,03 ton/ha) dan keuntungan (Rp11.013.120,00/ha). Intensification program of sugarcane in order to increase production and sugar crystal can be done with the addition of soil nutrient through fertilizer application. This study aims to evaluate the effectiveness of NPK compound fertilizer (22% N:12% P2O5:12% K2O) in the form of granular and briquettes to growth, productivity, and sugar content. The research was conducted on November 2012–October 2013 at Kalipare Experiment Station, Malang. The treatments include (1) 600 kg/ha granule NPK (G1), (2) 700 kg/ha granule NPK (G2), (3) 800 kg/ha granule NPK (G3), (4) 1,000 kg/ha NPK granule (G6) + 300 kg/ha NPK granule (G5) + 300 kg/ha Ammonium Sulphate (US), (6) 700 kg/ha NPK granule (G6) + 300 kg / ha US, (7) 800 kg / ha NPK granule (G7) + 300 kg / ha US, (8) 1,000 kg / ha granule NPK (G8) + 300 kg/ha US, (9) 600 kg/ha NPK briquettes (B1), (10) 700 kg/ha NPK briquettes (B3), (12) 1.000 kg/ha NPK briquettes (B4), (13) 600 kg/ha NPK briquettes (B5) + 300 kg/ha US, (14) 700 kg/ha NPK briquette (B6) + 300 kg/ha US, (15) 800 kg/ha NPK briquette (B7) + 300 kg/ha US, (16) 1,000 kg/ha NPK briquettes (B8) + 300 kg/ha US, (17) 600 kg/ha (N15, P15, K15) + 500 kg/ha AS (famer's application). The experiment was arranged design in randomized block design and repeated three times. The results showed that treatments B8, B6, B7, and G8 resulted in higher growth, productivity, and sugar production compared to farmer's application. The treatment of B6 is the most efficient in increasing productivity (22.29 ton/ha), sugar production (2.03 ton/ha), and net profit (Rp11,013,120/ha)