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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Produksi Tanaman
Marpaung, Christina Adela
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Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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Respon Pertumbuhan dan Hasil Bawang Merah (Allium ascalonicum L.) terhadap Berbagai Kombinasi Sumber Nitrogen dan Plant Growth Promoting Rhizobacteria (PGPR) Marpaung, Christina Adela; Moch. Dawam Maghfoer
Produksi Tanaman Vol. 11 No. 12 (2023): Desember
Publisher : Jurusan Budidaya Pertanian Fakultas Pertanian Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.protan.2023.011.12.08

Abstract

ABSTRAK Bawang merah (Allium ascalonicum L.)merupakan tanaman hortikultura yang dibutuhkan masyarakat Indonesia sebagai bumbu pelengkap masakan. Penelitian ini bertujuan untuk mendapatkan kombinasi dosis pupuk N anorganik, pupuk organik kotoran sapi, dan PGPR yang tepat untuk meningkatkan pertumbuhan dan hasil bawang merah. Penelitian dilakukan pada bulan Januari hingga Maret 2023 di Desa Mlorah, KecamatanRejoso, Kabupaten Nganjuk, Provinsi Jawa Timur. Penelitian ini dilaksanakan menggunakan Rancangan Acak Kelompok (RAK) yang terdiri dari 9 perlakuan dan 3 kali ulangan, meliputi : P0 {150 kg N Urea + 50 kg N ZA}, P1 {112,5 kg N Urea + 37,5 kg N ZA + Pupuk organik kotoran sapi 2,5 ton.ha-1 + PGPR 5 ml.l-1}, P2 {75 kg N Urea + 25 kg N ZA + Pupuk organik kotoran sapi 5 ton.ha-1 + PGPR 5 ml.l-1}, P3 {112,5 kg N Urea + 37,5 kg N ZA + Pupuk organik kotoran sapi 2,5 ton.ha-1 + PGPR 10 ml.l-1}, P4 {75 kg N Urea + 25 kg N ZA + Pupuk organik kotoran sapi 5 ton. ha-1 + PGPR 10 ml.l-1}, P5 {112,5 kg N Urea + 37,5 kg N ZA + Pupuk organik kotoran sapi 2,5 ton.ha-1 + PGPR 15 ml.l-1}, P6 {75 kg N Urea + 25 kg N ZA + Pupuk organik kotoran sapi 5 ton.ha-1 + PGPR 15 ml.l-1}, P7 {112,5 kg N Urea + 37,5 kg N ZA + Pupuk organik kotoran sapi 2,5 ton.ha-1+ PGPR 20 ml.l-1}, P8 {75 kg N Urea + 25 kg N ZA + Pupuk organik kotoran sapi 5 ton.ha-1 + PGPR 20 ml.l-1}. Hasil penelitian menunjukkanbahwa P7 memiliki pengaruh yang tidakberbeda nyata dengan P8. Kedua perlakuan inidapat mengurangi penggunaan pupukanorganik dan menunjukkan hasil yang lebih tinggi pada seluruh variabel pengamatan.Kombinasi dosis P7 menghasilkan bobot kering umbi sebesar 12,47 ton.ha-1 lebih tinggi 69% dan berbeda nyata dibandingkan dengan dosis P0 yang menghasilkan bobot kering umbi sebesar 7,37 ton.ha-1. Kata Kunci: Bawang Merah; Pertumbuhan; PGPR; Pupuk Organik ABSTRACT Shallot (Allium ascalonicum L.) is a horticultural crop that is needed by Indonesian people as a complementary seasoning for food. This research was carried out using a Randomized Block Design consisting of 9 treatments and 3 replications, including: P0 {150 kg N Urea + 50 kg N ZA}, P1 {112,5 kg N Urea + 37,5 kg N ZA + Cow dung organic fertilizer 2,5 ton.ha-1 + PGPR 5 ml.l-1}, P2 {75 kg N Urea + 25 kg N ZA + Cow dung organic fertilizer 5 ton.ha-1 + PGPR 5 ml.l-1}, P3 {112,5 kg N Urea + 37,5 kg N ZA + Cow dung organic fertilizer 2,5 ton.ha-1 + PGPR 10 ml.l-1}, P4 {75 kg N Urea + 25 kg N ZA + Cow dung organic fertilizer 5 ton. ha-1 + PGPR 10 ml.l-1}, P5 {112,5 kg N Urea + 37,5 kg N ZA + Cow dung organic fertilizer 2,5 ton.ha-1 + PGPR 15 ml.l-1}, P6 {75 kg N Urea + 25 kg N ZA + Cow dung organic fertilizer 5 ton.ha-1 + PGPR 15 ml.l-1}, P7 {112,5 kg N Urea + 37,5 kg N ZA + Cow dung organic fertilizer 2,5 ton.ha-1 + PGPR 20 ml.l-1}, P8 {75 kg N Urea + 25 kg N ZA + Cow dung organic fertilizer 5 ton.ha-1 + PGPR 20 ml.l-1}. The results of the research showed that P7 has an effect which was not significantly different from the combination of P8. Both of these treatments can reduce the use of inorganic fertilizer and showed higher results in all observed variables. The combined dose of P7 produced a tuber dry weight of 12.47 tons. ha-1 so that it is 69% higher and significantly different compared to the dose of P0 which produces a tuber dry weight of 7.37 tons. ha-1. Keywords : Growth; Organic Fertilizer; PGPR; Shallots
Growth, yield, and nitrogen use efficiency of shallots with plant growth-promoting rhizobacteria and cattle manure Marpaung, Christina Adela; Sudiarso; Adi Setiawan
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 53 No. 3 (2025): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v53i3.68329

Abstract

Continuous and excessive application of inorganic-N fertilizer leads to accumulation of chemical residues in soils, as plants typically utilize only about 50% of the applied nitrogen, which can further lead to environmental pollution. Resolve the low nitrogen uptake and fertilizer use efficiency, organic amendments, and beneficial microorganisms provide viable alternatives. The objective of this research was to evaluate the effects of different PGPR concentrations and cattle manure doses on nitrogen uptake dynamics and nitrogen use efficiency parameters (NUpE, NUtE, and NUE), as well as shallot growth and yield, to determine the most efficient treatment that supports nutrient efficiency and sustainable agronomic practices. The experiment used a constant nitrogen inorganic fertilizer of 100 kg ha-1. A factorial randomized block design was employed, consisting of four PGPR concentrations: 0, 10, 20, and 30 mL L-1. The second factor was cattle manure dosage consisted of 0, 10, and 30 ton ha-1. Observation variables included plant growth, yield components, nitrogen uptake dynamics, nitrogen uptake efficiency (NUpE), nitrogen utilization efficiency (NUtE), and nitrogen use efficiency (NUE). The results indicated significant interactions between PGPR and cattle manure in the number of tillers at 8 weeks after planting (WAP), crop growth rate (CGR) at 6–8 WAP, chlorophyll index, fresh and dry weight, and bulb weight. The treatment combining 30 mL L-1 PGPR with 30 t ha-1 cattle manure significantly increased average bulb weight by 136.6% compared to without PGPR + without cattle manure. This treatment also achieved the highest nitrogen uptake across all growth stages, peaking at 1 kg ha-1 per day at 56 DAP and recorded the highest NUpE from 41.90% to 64.50%, and reduced soil nitrogen losses by 22.6%. Consistent improvements in NUpE, NUtE, and NUE indicate that this integration enhances nitrogen translocation into shallot bulbs, leading to more efficient nutrient use, supporting higher productivity, and sustainable nutrient management. Keywords: Allium ascalonicum; NUE; NUpE; NUtE; organic fertilizer
Co-Authors Adi Setiawan Moch. Dawam Maghfoer Sudiarso