407 Pengaruh Konsentrasi Pupuk Organik Cair Buah-Buahan dan Cara Aplikasinya Terhadap Serapan N Dan Pertumbuhan Tanaman Sawi (Brassica Juncea L.) Pada Tanah Ultisol: The Effect of Concentration of Liquid Organic Fertilizer of Fruits and its Application on The N Absorption and Growth of Mustard Plant (Brassica juncea L.) on Ultisol Soil

This study aims to determine the effect of the concentration of liquid organic fertilizer (LOF) of fruits and its application on the N absorption and growth of mustard plant on ultisol soil. This study used a two-factor randomized group design with 3 replications. The first factor concentration of LOF with 4 levels ie P0 = 0ml LOF + 100ml water /polybag, P1 = 25ml LOF + 75ml water /polybag, P2 = 50ml LOF + 50ml water /polybag, P3 = 75ml LOF+ 25ml water /polybag, and the second factor of application of LOF with 3 levels that is B1= watered, B2= Sprayed, B3=½ watered and ½ sprayed. The results showed that giving LOF increases of soil pH by 5.78%, N absorption by 1.82 %; and number of leaves by 7.33%, wet weight by 1.47%, dry weight by 1.64%. The application method increases of soil pH by 7.05%, the number of leaves by 15.33%, and wet weight by 23.15%, dry weight by 2.39%, and N absorption by 9.87% and; The interaction of giving concentration of LOF and the application method increases of soil pH by 10.65%, and number of leaves by 37.52%, wet weight by 23.37% and dry weight by 4.86%, N absorption by 23.57 %. The best combination treatment is 75ml LOF + 25ml water and ½ watered + ½ sprayed. Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi pupuk organik cair (POC) buah-buahan dan cara aplikasinya terhadap serapan N dan pertumbuhan tanaman sawi pada tanah Ultisol. Penelitian ini menggunakan rancangan acak kelompok dua faktor dengan 3 ulangan. Faktor pertama konsentrasi POC dengan 4 taraf yaitu P0 = 0ml POC + 100ml air /polibag, P1 = 25ml POC + 75ml air /polibag, P2 = 50ml POC + 50ml air /polibag, P3 = 75ml POC+ 25ml air /polibag, dan cara aplikasi dengan 3 cara yaitu B1 = Disiram, B2 = Disemprot, B3 = ½ disiram + ½ disemprot. Hasil penelitian menunjukkan bahwa pemberian POC meningkatkan pH tanah sebesar 7,82%, serapan N sebesar 1,82% dan jumlah daun sebesar 7,33%, bobot basah sebesar 1,47%, bobot kering sebesar 1,64%; Cara aplikasinya meningkatkan pH tanah sebesar 1,94%, jumlah daun sebesar 15,33%, dan bobot basah sebesar 23,15%, bobot kering sebesar 2,39%, serapan N sebesar 9,87%; Interaksi pemberian konsentrasi pupuk organik cair dan cara aplikasinya meningkatkan meningkatkan pH tanah sebesar 10,02% dan jumlah daun sebesar 37,52%, bobot basah sebesar 23,37% dan bobot kering sebesar 4,86%, serapan N sebesar 23,57% pada tanaman sawi. Dengan perlakuan kombinasi terbaik adalah 75ml POC + 25ml air dan ½ disiram + ½ disemprot