Quantitative nutrient assessment of agricultural residues from different crop types in Chungcheongnam-do, Korea

Yeo-Uk Yun; Jin-Il Lee; Jeong Su Lee; Yun-Gi Cho; Jae-Han Lee; Kyo-Suk Lee

doi:10.7745/KJSSF.2025.58.4.455

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2025 Vol.58, Issue 4 Preview Page Next Page

Original research article

Quantitative nutrient assessment of agricultural residues from different crop types in Chungcheongnam-do, Korea

30 November 2025. pp. 455-464

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Abstract

Effective management of crop residues is essential for sustainable agriculture. This study assessed the quantity and nutrient composition of by-products from greenhouse, upland, and orchard crops in the Chungcheongnam-do region of South Korea based on a survey of 501 farms. Orchard by-products had the highest recycling rate (69.2%), followed by upland (48.6%) and greenhouse crops (44.2%). Residues of watermelon, cucumber, cabbage, and sweet potato had low C/N ratios, while upland and orchard residues with high lignin content showed relatively high C/N ratios, highlighting the need for utilization strategies based on crop-specific C/N characteristics. Leguminous crops such as soybean and sesame contained the highest nutrient concentrations per unit area, suggesting potential as substitutes for organic fertilizers. These findings provide crop-specific data to guide optimized recycling strategies and promote localized circular resource systems.

Dry matter yield and nutrient content of agricultural by-products.

Crop type (n samples)		Dry matter yield (kg 10a^-1)	Fertilizer nutrient content (kg 10a^-1)
Crop type (n samples)		Dry matter yield (kg 10a^-1)	N	P₂O₅	K₂O
Greenhouse by-products	Watermelon (32)	249 ± 121	7.0 ± 4.2	1.6 ± 0.7	4.6 ± 1.4
	Strawberry (31)	261 ± 72	4.5 ± 1.8	1.2 ± 0.5	1.8 ± 0.7
	Cucumber (31)	173 ± 65	4.4 ± 1.9	1.1 ± 0.4	2.9 ± 2.2
	Cherry tomato (32)	252 ± 84	5.9 ± 2.2	1.8 ± 0.9	4.7 ± 1.9
	Melon (34)	167 ± 68	4.7 ± 2.5	1.1 ± 0.5	2.5 ± 1.6
Upland by-products	Cabbage (30)	130 ± 86	2.8 ± 1.6	0.7 ± 0.4	2.4 ± 1.7
	Sweet potato (30)	266 ± 116	5.4 ± 2.8	1.6 ± 0.6	5.3 ± 3.4
	Red pepper (60)	312 ± 211	3.1 ± 1.2	0.8 ± 0.4	2.8 ± 1.9
	Soybean (40)	613 ± 317	7.4 ± 4.7	1.4 ± 0.6	6.5 ± 2.6
	Sesame (30)	546 ± 302	6.3 ± 2.2	1.7 ± 0.6	6.0 ± 3.1
	Perilla seeds (30)	502 ± 232	4.5 ± 1.8	1.1 ± 0.5	4.7 ± 2.3
Orchard by-products	Apple (30)	343 ± 126	0.21 ± 0.16	0.07 ± 0.04	0.19 ± 0.10
	Pear (32)	60 ± 46	0.04 ± 0.02	0.02 ± 0.01	0.04 ± 0.02
	Grape (30)	34 ± 24	0.02 ± 0.01	0.01 ± 0.00	0.01 ± 0.00
	Peach (31)	37 ± 28	0.02 ± 0.01	0.01 ± 0.00	0.01 ± 0.00

Keywords

Agricultural residues

Biomass recycling

Nutrient content

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Information

Publisher :Korean Society of Soil Science and Fertilizer
Publisher(Ko) :한국토양비료학회
Journal Title :Korean Journal of Soil Science and Fertilizer
Journal Title(Ko) :한국토양비료학회 학회지
Volume : 58
No :4
Pages :455-464
Received Date : 2025-08-01
Revised Date : 2025-09-30
Accepted Date : 2025-10-21
DOI :https://doi.org/10.7745/KJSSF.2025.58.4.455

Korean Journal of Soil Science and Fertilizer ISSN:0367-6315(Print) 2288-2162(Online) 한국토양비료학회 학회지

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