Effect of Urea Fertilizer and PNSB Photosynthetic Bacteria on the Growth and Yield of Pakcoy (Brassica rapa L.)

Alvera Prihatini Dewi Nazari; Eliyani; Aguswandi Polibaon

doi:10.55927/mudima.v5i10.628

Authors

Alvera Prihatini Dewi Nazari Mulawarman University
Eliyani Mulawarman University
Aguswandi Polibaon Mulawarman University

DOI:

https://doi.org/10.55927/mudima.v5i10.628

Keywords:

Brassica Rapa L., Pakcoy, Urea Fertilizer, PNSB Photosynthetic Bacteria

Abstract

Pakcoy (Brassica rapa L.) is a high-demand leafy vegetable requiring sufficient nitrogen (N) for optimal vegetative growth. This study aimed to evaluate the effects of urea fertilizer and Purple Non-Sulfur Bacteria (PNSB) photosynthetic bacteria, as well as their interaction, on the growth and yield of pakcoy. The factorial experiment 2 x 2 was conducted from April to June 2022 using a Randomized Complete Block Design with ten replications. The first factor was dose of urea (0 and 150 kg ha⁻¹), while the second was PNSB concentration (0 and 5 mL L⁻¹). The data were analyzed using analysis of variance (Anova), if the results were significantly different, followed by the Least Significant Difference (LSD) test at the 5% level. Results of the Anova showed that the effect of interaction between urea and PNSB significantly different on stem height and root length. Urea application significantly different on all observed variables: stem height, leaf number (14, 21, and 28 DAT), stem diameter, root length, total leaf area, fresh weight, and dry weight per plant, while PNSB significantly increased leaf number (14, 21, and 28 DAT), stem diameter, fresh weight, and dry weight per plant. The combination of 150 kg ha⁻¹ urea and 5 mL L⁻¹ PNSB enhanced fresh weight by 73.36% compared to the control. These findings indicate that both urea and PNSB are effective in promoting pakcoy productivity, with urea showing dominant effects

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