The Effect of Liquid Organic Fertilizer (LOF) Concentration from Mixture of Cattle Urine Cow's Blood Flour and Coconut Husk on the Growth and Yields of Chinese Cabbage (Brassica rapa subsp. chinensis)

Sawi sendok merupakan salah satu tanaman yang paling banyak ditanam dan dinikmati di Indonesia. Peningkatan produksi selalu dilakukan untuk memenuhi permintaan pasar, salah satunya dengan pemberian pupuk. Pupuk organik dapat digunakan untuk mengurangi penggunaan pupuk kimia anorganik. Penelitian ini bertujuan untuk mengetahui mengetahui pengaruh pemberian pupuk organik cair (POC) campuran urine sapi, tepung darah sapi dan sabut kelapa terhadap pertumbuhan dan hasil panen tanaman sawi sendok; dan menentukan konsentrasi POC campuran urine sapi, tepung darah sapi dan sabut kelapa yang paling optimal untuk pertumbuhan dan hasil panen tanaman sawi sendok. Penelitian dilaksanakan di Kelurahan Ledok, Kecamatan Argomulyo, Kota Salatiga, Jawa Tengah. Analisis tanah dan jaringan tanaman dilaksanakan di Laboratorium Fakultas Pertanian dan Bisnis UKSW. Penelitian dilaksanakan menggunakan Rancangan Acak Kelompok (RAK) dengan perlakuan pemberian berbagai konsentrasi POC campuran urine sapi, tepung darah sapi dan sabut kelapa. Perlakuan terdiri atas lima taraf konsentrasi POC, yaitu P0 (0%), P1 (5%), P2 (10%), P3 (15%), P4 (20%). Hasil penelitian menunjukkan POC campuran urine sapi, tepung darah sapi dan sabut kelapa hingga konsentrasi 20% memberikan pengaruh pada pertumbuhan tanaman, namun belum mampu mempengaruhi hasil tanaman sawi sendok. Konsentrasi POC campuran urine sapi, tepung darah sapi dan sabut kelapa 20% hanya mampu secara nyata meningkatkan tinggi tanaman dan jumlah daun, tetapi belum mampu meningkatkan secara nyata pada luas daun, berat basah tajuk, berat kering tajuk, berat basah akar, berat kering akar dan hasil panen.Chinese cabbage is one of the most widely grown and enjoyed plants in Indonesia. Increased production is always carried out to meet market demand, one of which is the provision of fertilizers. Organic fertilizers can be used to reduce the use of inorganic chemical fertilizers. This study aims to determine the effect of giving liquid organic fertilizer (LOF) mixture of cattle urine, cow blood flour and coconut husk on the growth and yield of chinese cabbage; and determine the optimal concentration of LOF mixture of cattle urine, cow’s blood flour and coconut husk for growth and yield of chinese cabbage. The research was conducted in Ledok Village, Argomulyo District, Salatiga City, Central Java. The soil and plant tissue analysis was carried out at the SWCU Agriculture and Business Faculty Laboratory. The study was carried out using a Randomized Block Design (RBD) with treatment with various concentrations of LOF mixture of cattle urine, cow’s blood flour and coconut husk. The treatment consisted of five levels of LOF concentration, which are P0 (0%), P1 (5%), P2 (10%), P3 (15%), P4 (20%). The results showed that the LOF up to a concentration of 20% had an effect on plant growth, but had not been able to affect the yield of chinese cabbage. LOF concentration of 20% was only able to significantly increase plant height and number of leaves, but was not able to significantly increase leaf area, shoot wet weight, shoot dry weight, root wet weight, root dry weight and yield