Abstract
The research aims to study the effect of the application ultra gen biofertilizer and N, P, K fertilizer on the growth and production of onion (Allium ascalonicum L.). The research was conducted at Agricultural Faculty Experimental Unit, University of Riau, Pekanbaru. The research in form factorial experimentally 5x3 arranged in a completely randomized design. The first factor was ultra gen biofertilizer consists of 5 levels (without, 50, 100, 150 and 200 l.ha-1). The second factor was a N, P, K fertilizer consists of 3 levels (without, 100 kg N + 45 kg P2O5 + 37,5 kg K2O and 200 kg N + 90 kg P2O5 + 75 kg K2O.ha-1), each combination was repeated 3 times. The parameters observed were number of bulb per clump, circumference of bulb, weight of bulb fresh per clump, weight of bulb fresh per plot and weight of bulb consumption per plot. The application of ultra gen biofertilizer doses of 100 l.ha-1and N, P, K fertilizer 100 kg N + 45 kg P2O5 + 37,5 kg K2O.ha-1 increased weight of bulb fresh per clump, weight of bulb fresh per plot and weight of bulb consumption per plot significantly compared to another combination, but not significantly on number of bulb per clump and circumference of bulb.
Highlights
Bawang merah (Allium ascalonicum L.) merupakan salah satu komoditas hortikultura yang mempunyai arti penting, baik dilihat dari nilai ekonomis maupun kandungan gizinya
The research aims to study the effect of the application ultra gen biofertilizer
The research was conducted at Agricultural Faculty Experimental Unit
Summary
Penelitian dilaksanakan di Kebun Percobaan Fakultas Pertanian, Universitas Riau, Kampus Binawidya Universitas Riau, Simpang Baru, Tampan, Pekanbaru dari bulan Agustus sampai Oktober 2017. Bahan yang digunakan antara lain bibit bawang merah varietas Bima Brebes, pupuk dasar, pupuk hayati ultra gen, pupuk Urea, TSP dan KCl sumber dari N, P dan K, Dhithane M-45 dan daun mimba sebagai pestisida nabati. Alat yang digunakan dalam penelitian ini adalah cangkul, parang, garu, ajir, label, shadingnet, timbangan digital, gunting, pisau, mistar, gembor, tangki semprot, ember, tali rafia dan alat-alat tulis. Penelitian dalam bentuk eksperimen faktorial dengan 5 perlakuan yang diulang sebanyak 3 kali. Faktor pertama adalah pupuk hayati ultra gen yang terdiri dari 5 taraf (0, 50, 100, 150, 200 l.ha-1) dan faktor kedua adalah pupuk N, P, dan K yang terdiri dari 3 taraf (0, 100 kg N + 45 kg P2O5 + 37,5 kg K2O, 200 kg N + 90 kg P2O5 + 75 kg K2O.ha-1) dimana setiap kombinasi diulang sebanyak 3 kali. Parameter yang diamati adalah jumlah umbi per rumpun, lilit umbi, berat umbi segar per rumpun, berat umbi segar per plot dan berat umbi layak konsumsi
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