Response of Pakcoy (Brassica rapa L.) to the treatment of Liquid Organic Fertilizer of Fisheries Waste ; Respon Tanaman Pakcoy (Brassica rapa L.) terhadap Pemberian Pupuk Organik Cair Limbah Perikanan

One of issues in urban farming is waste management. The amount of waste in urban has not been managed well. Fishery waste is one of organic waste that can be utilized is as raw material for liquid organic fertilizer. The purpose of this study was to determine growth and yield responses of Pakcoy to the treatment of liquid organic fertilizer of fisheries waste. The research method was using factorial completely block randomized design repeated four times. First factor is fertilizer dosages of urea with five levels (0, 25%, 50%, 75%, and 100% from 250 kg ha-1 recommendation dosage), and second factor is concentration fertilizer organic liquid fisheries waste with five levels (0, 2, 4, 6, and 8 ml L-1). There are 25 treatment combinations with 6 plants per experimental unit, so there are 600 samples studied. This research was conducted at Kebun Bergizi, and Agroecotechnology Laboratory, Trilogi University, from September to October 2018. The results showed combination of 50% treatment of urea fertilizers and 2 ml L-1 of organic liquid fertilizer gave better results compared to control and other treatment on growth variable. The variable of edible leaves number and fresh weight of plants ie 19.11 strands, and 220.77 g heavier than the 100% treatment of urea dosages used. Keywords: Fertilization, nitrogen, organic waste, urban farming, vegetable ; Salah satu isu dalam pertanian perkotaan adalah pengelolaan limbah. Banyaknya limbah di perkotaan belum banyak dikelola secara baik. Salah satu limbah yang dapat dikelola dan dimanfaatkan adalah limbah perikanan sebagai bahan baku pupuk organik. Tujuan dari penelitian ini mengetahui respon pertumbuhan dan hasil panen pakcoy terhadap pemberian pupuk organik cair limbah perikanan. Metode penelitian menggunakan RAKL secara faktorial diulang empat kali. Faktor pertama adalah dosis pupuk urea dengan lima taraf (0, 25%, 50%, 75%, dan 100% dari dosis rekomendasi 250 kg ha-1), dan Faktor kedua adalah konsentrasi pupuk cair organik dari limbah perikanan dengan lima taraf (0, 2, 4, ...