Relationship between maturity and microbial communities during pig manure composting by phospholipid fatty acid (PLFA) and correlation analysis

Jishao Jiang; Hua Huang; Yimei Huang; Xueling Liu; Dong Liu

doi:10.1016/j.jenvman.2017.10.067

Relationship between maturity and microbial communities during pig manure composting by phospholipid fatty acid (PLFA) and correlation analysis

J Environ Manage. 2018 Jan 15:206:532-539. doi: 10.1016/j.jenvman.2017.10.067. Epub 2017 Nov 8.

Authors

Jishao Jiang¹, Hua Huang², Yimei Huang³, Xueling Liu⁴, Dong Liu⁵

Affiliations

¹ Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China; School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Xinxiang, Henan 453007, PR China.
² Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China; College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China.
³ Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China. Electronic address: ymhuang1971@nwsuaf.edu.cn.
⁴ Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
⁵ Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, PR China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, PR China.

PMID: 29127925
DOI: 10.1016/j.jenvman.2017.10.067

Abstract

The dynamic of microbial community plays vital role during composting. We therefore conducted a combined study on the maturity of compost (by pig manure composting with covering matured compost) and the successions of microbial communities (via phospholipid fatty acid (PLFA)). Our results showed that pH, electrical conductivity (EC), NH₄-N, and germination index (GI) were suitable indicators for compost maturity evalument. In addition, there was a closer correlation between maturity indexes (NH₄-N and GI) and the microbial compositions (as evaluated by microbial PLFA). The regression predicting model for NH₄-N used bacteria PLFA 15:0 and fungi PLFA 18:1ω9t (R² = 0.98, P < 0.01) and for GI used fungi PLFA 18:1ω9t and 18:1ω9, 12 (R² = 0.94, P < 0.01) as the evidences of good predictive ability. It also indicated that PLFA 18:1ω9t has a good relationship with the changes of NH₄-N and GI during the composting. Our results revealed the potential of using microbial PLFA for evaluating the maturity during pig manure composting.

Keywords: Correlation analysis; Maturity; Microbial communities; Phospholipid fatty acids (PLFA) analysis; Pig composting.

MeSH terms

Animals
Composting*
Fatty Acids*
Fungi
Manure*
Phospholipids
Soil
Swine

Substances

Fatty Acids
Manure
Phospholipids
Soil