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											BIO Web Conf.
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<div><strong>Volume </strong>209, 2026				</div>
				
					                The 1<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">st</sup> International Conference on Biological Technology and Engineering for Sustainable Nature (IC-BioTEStA 2025)
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					Article Number
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<td>04001</td>
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					Number of page(s)
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<td>9</td>
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<td>Biodiversity and Environmental Sustainability</td>
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<th>DOI</th>
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<a href="https://doi.org/10.1051/bioconf/202620904001">
					https://doi.org/10.1051/bioconf/202620904001
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<th>Published online</th>
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				09 January 2026
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## The Phosphorus Efficiency and Uptake in Pakcoy (Brassica rapa) Through the Use of Plant Residues with Varying Quality

Anis Sholihah11 and Agus Sugianto1,2

1 Department of Agrotechnology, Universitas Islam Malang, Malang 65144, Indonesia 2 Center for Food Security Studies, Universitas Islam Malang, Malang 65144, Indonesia

1 Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract

This study aimed to evaluate the effect of different quality organic materials combined with various doses on the uptake, efficiency of phosphorus nutrients, growth parameters, and yield of pakcoy (Brassica rapa) plants under pot conditions in a greenhouse. The research consists of two stages. The first stage is making compost from plant residue,s followed by analysis to determine the quality of the compost. The second stage is testing the compost on the growth and yield of bok choy. This research uses a factorial randomized block design, 2 factors; factor 1 plant residues compost (R) 2 levels; namely; R1 = Soybean stove and R2 = Rice straw, Factor 2 dose 5 levels; D0 = dose 0 tons/ha, D1 = dose 5 tons/ha, D2 = dose 10 tons/ha, D3 = dose 15 tons/ha, and D4 = dose 20 tons/ha. The results showed that the soybean residue compost treatment at a dose of 15 tons/ha (R1D3) showed P uptake of 2690 mg/kg and the highest economic fresh weight yield, namely 179.93 g/plant, compared to other treatments. The results of the P uptake efficiency analysis showed that the provision of soybean residue compost was 47.03% more efficient than rice straw compost. These findings highlight the potential of varying doses of organic matter to enhance phosphorus uptake and efficiency, increasing pakcoy yields while reducing chemical inputs.

Key words: Phosphorus uptake / pakcoy / rice straw / soybean residues

© The Authors, published by EDP Sciences, 2026

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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