Fadliana, 2016. Peningkatan Efektivitas Pupuk Anorganik dengan Pemberian Pupuk Organik pada Pertumbuhan dan Hasil Padi Sawah (Oryza sativa L.). Tesis Magister, Program Pascasarjana Universitas Syiah Kuala, di bawah bimbingan Sufardi dan Muyassir. ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh pupuk anorganik dan pupuk organik untuk tanaman padi. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) faktorial terdiri dari 2 faktor, faktor pertama A (NPK) 4 taraf : 0 kg/ha, 150 kg/ha, 300 kg/ha dan 450 kg/ha, faktor kedua O (Organik) 4 taraf : 0 kg/ha, 250 kg/ha, 500 kg/ha dan 750 kg/ha. Parameter yang di amati tinggi tanaman, jumlah anakan , jumlah anakan produktif, panjang malai, berat gabah ubinan, bobot gabah 1000 butir, gabah bernas, gabah hampa, potensi hasil, indeks hasil, serapan hara dan penilaian efektifitas pupuk. Hasil Penelitian menunjukkan pemberian pupuk anorganik dapat meningkatkan pertumbuhan tinggi tanaman, jumlah anakan hingga 60 HST, jumlah anakan produktif dan serapan hara N. Pemberian pupuk organik dapat meningkatkan berat ubinan dan potensi hasil/ha. Nilai RAE pada pemberian pupuk anorganik 450 kg ha-1 dan pupuk organik 750 kg ha-1 dapat meningkatkan bobot gabah bernas 55,34 %. Pemberian pupuk anorganik 450 kg ha-1 memiliki efesiensi 0,127 % dapat meningkatkan produksi 968 kg ha-1, pemberian pupuk organik sebesar 250 kg ha-1 memiliki efesiensi 0,184 % dapat meningkatkan produksi 1.321 kg ha-1. Kata kunci : Pupuk anorganik, pupuk organik, pertumbuhan, hasil, efektivitas dan efesiensi pupuk   Fadliana, 2016. Improving the Effectiveness of Inorganic Fertilizer Due to Organic Fertilizer Application on Growth and Yield of Rice (Oryza sativa L.). Master Thesis, Graduate Program Syiah Kuala University, under the guidance of Sufardi and Muyassir. ABSTRACT This study was aimed to determine the effect of inorganic and organic fertilizer on rice yield. The factorial randomized block design was used in the study which consisted of two factors, the first factor inorganic fertilizer (NPK) at four levels: 0 kg / ha, 150 kg / ha, 300 kg / ha and 450 kg / ha, the second factor Organic fertilizer at four levels: 0 kg / ha, 250 kg / ha, 500 kg / ha and 750 kg / ha. The parameters observed were the plant height, number of tillers, number of productive tiller, panicle length, weight of 1000 grains, filled grain, empty grain, yield potential, the yield index, nutrient uptake and assessment of the effectiveness of fertilizers. The result showed that inorganic fertilizer enhanced the growth of plant height, number of tillers up to 60 days after planting, the number of productive tillers and N uptake. Organic fertilizer increased the yield potential per hectare. The RAE in the provison of fertilizer inorganic material 450 kg ha-1 and organic fertilizer 750 kg ha-1 can increase the weight of chase away full 55,35%. Inorganic fertilizer application of 450 kg ha-1 resulted of 0.127% efficiency and increased the production of 968 kg ha-1, organic fertilizer of 250 kg ha-1 resulted of 0.184% efficiency and increased the production of 1,321 kg ha-1. Keywords: inorganic fertilizers, organic fertilizers, growth, yield, effectiveness and efficiency of fertilizer