<![CDATA[This study aims to determine the dosage of nitrogen fertilizer and the optimum biochar treatment on the growth of mustard plant pakcoy (Brassica rapa L.) on Entisol soil. The research was conducted at Dukuh Kraguman, Tegalwaru Village, Dau District, Malang Regency, for three months from September to November 2016. The study used Randomized Block Design (RAK) with 13 treatments and repeated 3 times. Observation was done 3 times that is age 25 HST, 35 HST, 45 HST observed variables plant height, leaf area, number of leaves, wet weight, and dry weight of mustard plant pakcoy. The results showed that the use of nitrogen and biochar fertilizers significantly affected the number of leaves, wet weight, and dry weight of mustard plant pakcoy at 45 HST. Provision of nitrogen 100 kg/ha-1 and biochar (30 t/ha-1) spread evenly fertilizers increases the percentage of high growth, leaf area, number of leaves, wet weight, and dry weight of mustard plant pakcoy. Penelitian ini bertujuan untuk menentukan dosis pupuk nitrogen dan perlakuan biochar yang optimum terhadap pertumbuhan tanaman sawi pakcoy (Brassica rapa L.) pada tanah Entisol. Penelitian dilaksanakan di Dukuh Kraguman, Desa Tegalwaru, Kecamatan Dau, Kabupaten Malang, selama tiga bulan mulai September ? November 2016. Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan 13 perlakuan dan diulang sebanyak 3 kali. Pengamatan dilakukan sebanyak 3 kali yaitu umur 25 HST, 35 HST, 45 HST variabel yang diamati tinggi tanaman, luas daun, jumlah daun, bobot basah, dan bobot kering tanaman sawi pakcoy. Hasil penelitian menunjukkan bahwa penggunaan pupuk nitrogen dan biochar berpengaruh nyata terhadap jumlah daun, bobot basah, dan bobot kering tanaman sawi pakcoy pada 45 HST. Pemberian pupuk nitrogen 100 kg/ha-1 dan biochar (30 t/ha-1) disebar merata meningkatkan persentase pertumbuhan tinggi, luas daun, jumlah daun, bobot basah, dan bobot kering tanaman sawi pakcoy.]]>
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