RESPON PERTUMBUHAN BIBIT SENGON (Paraserianthes falcataria) PADA MEDIA CAMPURAN PMK, COCOPEAT DAN PUPUK KOTORAN AYAM DI PERSEMAIAN BPDAS KOTA PONTIANAK
Authors: Sarjan Sarjan , Herawatiningsih Ratna , Wulandari Reine Suci 
Published: June 2022

The first step in the development of sengon plants can be done by increasing healthy and uniform plant nurseries, one of which is by using suitable planting media, namely a combination of PMK soil, cocopeat, and chicken manure. This study aims to obtain the best proportion of PMK, cocopeat and chicken manure on the growth of sengon seedlings in the BPDAS nursery in Pontianak City.  The research method used was an experiment with a completely randomized design. The research treatment was the comparison of the planting medium of PMK soil, cocopeat, and chicken manure with 6 treatment levels (v/v/v). The treatment referred to is PMK (control); (7:0:4); (7:1:3); (7:2:2); (7:3:1); (7:4:0). All treatments were repeated 5 times, with each replication being sampled so that the total sample of seeds was 30 plants. The observation variables consist of increase in stem height, increase in stem diameter, increase in the number of leaves, wet weight, dry weight, shoot root ratio and seed quality index. The results showed that the ratio of PMK, cocopeat and chicken manure was able to increase seedling height increase, stem diameter increase, increase in leaf number, plant biomass and seed quality index value. The best proportion of the planting medium for PMK, cocopeat, and chicken manure for the growth of sengon seedlings in the nursery in treatment E was 7: 3: 1 and D was 7: 2: 2. Keywords: chicken manure, cocopeat, sengon seeds, reforestation AbstrakLangkah awal dalam pengembangan tanaman sengon dapat dilakukan dengan meningkatkan pembibitan tanaman yang sehat dan seragam salah satunya dengan menggunakan media tanam yang sesuai yaitu dengan kombinasi tanah PMK, cocopeat, dan pupuk kotoran ayam. Penelitian ini bertujuan untuk mendapatkan proporsi media PMK, cocopeat dan pupuk kotoran ayam terbaik terhadap pertumbuhan bibit sengon di persemaian BPDAS Kota Pontianak. Metode penelitian eksperimen dengan Rancangan Acak Lengkap. Perlakuan penelitian yaitu perbandingan media tanam tanah PMK, cocopeat, dan pupuk kotoran ayam dengan 6 taraf perlakuan (v/v/v). Perlakuan yang dimaksud yaitu PMK (kontrol); (7:0:4); (7:1:3); (7:2:2); (7:3:1); (7:4:0). Semua perlakuan diulang sebanyak 5 kali, dengan masing-masing ulangan  menjadi sampel sehingga sampel bibit seluruhnya yaitu 30 tanaman. Variabel pengamatan terdiri dari pertambahan tinggi batang, pertambahan diameter batang, pertambahan jumlah helai daun, bobot basah,  bobot kering, rasio pucuk akar dan indeks mutu bibit. Hasil penelitian menunjukkan bahwa perbandingan media PMK, cocopeat dan pupuk kotoran ayam mampu meningkatkan pertambahan tinggi bibit, pertambahan diameter batang, pertambahan jumlah daun, biomassa tanaman dan nilai indeks mutu bibit. Proporsi perbandingan media tanam PMK, cocopeat, dan pupuk kotoran ayam yang terbaik untuk pertumbuhan bibit sengon di persemaian pada perlakuan E yaitu 7:3:1 dan D yaitu 7:2:2.Kata kunci : bibit sengon, cocopeat, pupuk kotoran ayam, reboisasi