Efektivitas Pemupukan Organik Berlevel dan Frekuensi Pemupukan Nitrogen Berbeda terhadap Produktivitas Rumput Pakchong (Pennisetum purpureum cv. Pakchong)

Abstract

Penelitian ini bertujuan menganalisis efektivitas pemupukan organik berlevel dan frekuensi pemupukan nitrogen berbeda terhadap pertumbuhan dan produktivitas rumput Pakchong. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) Faktorial 6 x 5 dengan 10 kali ulangan. Faktor pertama (dosis pupuk organik berlevel): P1 = 0 g polybag-1, P2 = 250 g polybag-1, P3 = 500 g polybag-1, P4 = 750 g polybag-1, P5 = 1.000 g polybag-1, dan P6 = 1.250 g polybag-1. Faktor kedua (pupuk urea dosis 200 kg ha-1 dengan frekuensi berbeda): F1 = 1 kali, F2 = 2 kali, F3 = 3 kali, F4 = 4 kali, dan F5 = 5 kali. Penelitian ini menggunakan stek rumput Pakchong umur 90 hari dengan penanaman di polybag. Peubah yang diamati yaitu pH tanah, tinggi tanaman, diameter batang, jumlah daun, panjang dan lebar daun, jumlah anakan, kandungan gula batang, warna daun, produksi biomassa segar dan kering total rumput Pakchong. Hasil ini menunjukkan pemberian pupuk organik dan pupuk nitrogen efektif meningkatkan produktivitas rumput Pakchong. Simpulan penelitian ini yaitu dosis pupuk organik 5 ton ha-1 optimal meningkatkan pH tanah, pertumbuhan morfologi tanaman, dan produksi biomassa total rumput Pakchong. Frekuensi pemberian urea 1 kali optimal meningkatkan jumlah anakan umur 8 MST.

This study aims to analyze the effectiveness of different levels organic fertilizer and nitrogen fertilization frequencies on the growth and productivity of Pakchong grass. This study used a Factorial Completely Randomized Design (CRD) 6 x 5 with 10 replications. The first factor (levels of organic fertilizer): P1 = 0 g polybag-1, P2 = 250 g polybag-1, P3 = 500 g polybag-1, P4 = 750 g polybag-1, P5 = 1.000 g polybag-1, and P6 = 1.250 g polybag-1. The second factor (urea fertilizer dosage of 200 kg ha-1 with different frequencies), F1 = 1 time, F2 = 2 times, F3 = 3 times, F4 = 4 times, and F5 = 5 times. This study used Pakchong grass cuttings that planted in polybags up to 90 days old. The observed variables were soil acidity (pH), plant height, stem diameter, number of leaves, leaf length and width, number of tillers, stem sugar content, leaf color, total fresh and dry biomass production of Pakchong grass. The results showed that the application of organic fertilizer and nitrogen fertilizer effectively increased the productivity of Pakchong grass. In conclusion, the application of an organic fertilizer dose of 5 tons ha-1 optimally increased soil pH, plant morphological growth, and total biomass production of Pakchong grass. The frequency of once time urea application was optimally increases the number of tillers aged 8 weeks after planting.