175 ZIRAA’AH, Volume 46 Nomor 2, Juni 2021 Halaman 175-184 p-ISSN 1412-1468 e-ISSN 2355-3545 PEMBERIAN PUPUK UREA DAN PUPUK KANDANG KAMBING PADA TANAH ULTISOL BILAH HULU PADA PERTUMBUHAN PRODUKSI TANAMAN PAKCOY (Brassica rapa L) (Application of Urea and Goat Manure on Ultisol Soil Bilah Hulu On Pakcoy Plant Production Growth) Fitra Syawal Harahap 1 , Mulya Rafika 2 , Zuriani Ritonga 3 , Rendi Fitra Yana 4 1 Program Studi Agroteknologi, Fakultas Sains dan Teknologi, Universitas Labuhanbatu Sumatera Utara. 2 Program Studi Akuntansi, Fakultas Ekonomi dan Bisnis, Universitas Labuhanbatu Sumatera Utara. 3 Program Studi Manajemen, Fakultas Ekonomi dan Bisnis, Universitas Labuhanbatu Sumatera Utara. 4 Program Studi Komunikasi Penyiaran Islam, Fakultas Agama Islam, Universitas Al Washliyah, Labuhanbatu Sumatera Utara Penulis Koresponden: fitrasyawalharahap@gmail.com Article Submitted: 26-02-2021 Article Accepted: 23-05-2021 ABSTRACT Application of Urea Fertilizer and Goat manure in a Ultisol for green mustard plants (Brassica rapa L) aimed to determine the fertilizer treatment of goats sometimes goats to increase leaf area, root volume, and fresh weight of plants. And Interaction of fertilizer application, sometimes goat fertilizer (ts/ha) and urea fertilizer on green mustard plants. This research was conducted in Sona Village with a height of 18 meters above sea level in Labuhanbatu Regency from December 2019 until March 2020. The material used was green mustard seeds, goat manure. Urea fertilizer, water Tools used are cutter blades, analytical scales, rulers, scissors, mortars, measuring flasks, buckets, calipers, neat ropes, hoes. The research will be conducted with a factorial group design. The first factor is the provision of factorial Group Design consisting of 2 factors, the first factor is Goat Cage fertilizer (K) consisting of 3 levels and the second factor is the provision of Urea fertilizer consisting of 2 dose levels, so we get 6 treatment combinations every 4 replications so that 24 plots were obtained. Each plot consisted of 25 plants and taken 5 plants as samples. The parameters observed were plant height (cm), number of leaves (strands), leaf area (cm 2 ), root volume (ml), and weight of fresh plant weight (g). Data obtained from the results of the study were statistically analyzed with variance and continued with Duncan's New Multiple Range Test (DNMRT) at 5% level. Results of research The treatment of fertilizer sometimes goat (ts/ ha) with a dose of 2 ts/ha and urea fertilizer at 100 kg/ha can increase leaf area, root volume, and plant fresh weight. As well as the interaction of fertilizer application, sometimes goat fertilizer (t / ha) and urea fertilizer have a significant influence on the parameters of leaf area, root volume, and plant fresh weight. Keywords: Goat Manure, Green Mustard Plant, Urea Fertilizer PENDAHULUAN Pakcoy (Brassica rapa L.) sayuran merupakan tanaman hortikultura yan memiliki peran sebagai sumber vitamin dan mineral. Permintaan masyarakat terhadap Pakcoy semakin meningkat. Konsumsi Pakcoy mengalami kenaikan dari 1.304 kg/kapita/tahun pada 2013 menjadi 1.408