Effect of filtered swine liquid manure on the farmer’s income and yield of Lactuca sativa longifolia,  Asteraceae

Deog-Bae Lee; Byoung-O Lee; Byeonghyeon Kang; Kiyong Nam; Hyun-Shik Choi

doi:10.11109/JAES.2025.27.3.169

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2025 Vol.27, Issue 3 Preview Page Next Page

Research article

Effect of filtered swine liquid manure on the farmer’s income and yield of Lactuca sativa longifolia, Asteraceae 여과 액비 사용이 로메인 상추의 수량과 농가 소득에 미치는 영향

31 December 2025. pp. 169-175

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Abstract

20-day-old romaine lettuce seedlings were transplanted on September 13 and harvested on October 25, 2024. Fertilizer usage was calculated based on soil testing using the chemical fertilizer(CF), filtered swine liquid manure(FSLM)+potassium chloride(KCl), and FSLM+KCl+compost tea. The nitrogen content of the edible part of romaine lettuce was the highest in CF at 4.2%, but there were no statistically significant differences in phosphorus, potassium, calcium, or magnesium contents among the treatments. The differences in soil nutrient content before and after the experiment revealed a decrease in pH, organic matter, phosphate, potassium, calcium, and magnesium content as well as electric conductivity. The use of FSLM reduced chemical fertilizer usage by 56.3 kg per 10a, resulting in a savings of KRW 94,800 in fertilizer costs. FSLM+KCl resulted in more leaves and thicker taproots than CF. Consequently, marketable yield per 10a increased by 16.9% in FSLM+KCl and by 13.0% in FSLM+KCl+compost tea compared to CF. Adding the fertilizer cost savings by using FSLM, the total economic benefit of FSLM was KRW 915,200 per 10a.

Keywords

Filtered swine liquid manure

Fertigation

Soil fertility

Yield

Romaine lettuce

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Information

Publisher :The Korean Society of Animal Environmental Science & Technology
Publisher(Ko) :(사)한국축산환경학회
Journal Title :Journal of Animal Environmental Science
Journal Title(Ko) :축산시설환경학회지
Volume : 27
No :3
Pages :169-175
Received Date : 2025-11-12
Revised Date : 2025-12-15
Accepted Date : 2025-12-18
DOI :https://doi.org/10.11109/JAES.2025.27.3.169

Journal of Animal Environmental Science ISSN:1226-0274(Print) 축산시설환경학회지

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