Penentuan Dosis Optimum Pupuk Nitrogen pada Kemangi (Ocimum basilicum) di Tanah Inceptisol.
Abstract
Penelitian ini dilakukan untuk menentukan dosis optimum pupuk nitrogen
yang dapat memberikan hasil maksimum pada produksi (Yield) tanaman kemangi
aksesi KM4 di tanah Inceptisol. Penelitian ini dilakukan mulai 10 Juni 2015 sampai
15 Oktober 2015 di Kebun Percobaan ADS (Agribusiness Development Station),
Dramaga, Bogor. Percobaan ini menggunakan Rancangan Kelompok Lengkap
Teracak (RKLT). Perlakuan yang diberikan terdiri dari lima taraf yaitu, 0X, ¼X,
½X, ¾X dan X. Dimana X = 240 kg ha-1 N atau 533 kg ha-1 Urea. Masing-masing
perlakuan dilakukan 4 kali ulangan. Dosis P dan K yang digunakan adalah 100 kg
ha-1 P205 dan 100 kg ha-1 K20. Hasil penelitian menunjukkan perlakuan dosis N pada
tanaman kemangi meningkatkan secara kuadratik bobot kering per tanaman
kemangi dan meningkatkan secara linier bobot panen per tanaman, bobot panen per
petak, bobot panen per hektar, jumlah cabang panen per tanaman, dan jumlah
cabang panen per petak, jumlah cabang panen per hektar. Dosis rekomendasi
pemupukan N di Inceptisol Dramaga adalah 154,05 kg ha-1. This study was conducted to determine the optimum rate of nitrogen fertilizer
for basil on inceptisols. The study was conducted on 10th June 2015 until 15th
October 2015 at ADS (Agribusiness Development Station) Experimental Farm,
Dramaga, Bogor. The study was arranged in Randomized Complete Block Design
(RCBD). There were 5 rates of N in this study, i.e. 0X, ¼X, ½X, ¾X, and X. Where
X = 240 kg ha-1 or 533 kg ha-1 Urea. Each treatment was repeated 4 times. Rate of
P and K were 100 kg ha-1 P205 and 100 kg ha-1 K20. The result of this study showed
that N application increased quadratically dry weight per plant of basil and
increased linearly yield per plant, yield per plot, yield per hectare, amount of
branches per plant, and amount of branches per plot, amount of branches per
hectare. Recommendation rate of N fertilizer on Inceptisols Dramaga is 154,05 kg
ha-1.