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Pedosphere 23(6): 826--834, 2013
ISSN 1002-0160/CN 32-1315/P
©2013 Soil Science Society of China
Published by Elsevier B.V. and Science Press

Aromatic moieties from matured chicken manure and agriculture residues compost suppress growth of Lepidium sativum L. and Trichoderma harzianum

LUO Yi-Hong¹, ZHANG Dong-Qing², YU Guang-Hui¹

and SHEN Qi-Rong¹

¹Agricultural Ministry Key Lab of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Jiangsu Key Lab for Organic Solid Waste Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095 (China)
²Baoshan Environmental Protection Bureau, Shanghai 201900 (China)

ABSTRACT

To better understand the role of organic matter (OM) prepared from chicken manure and agriculture residues compost on the growth of plants (Lepidium sativum L.) and antagonistic fungi (Trichoderma harzianum), we analyzed the structure and composition of extracted OM using fluorescence excitation-emission matrix (EEM) spectroscopy and solid-state ¹³C cross-polarization magic-angle-spinning nuclear magnetic resonance (¹³C CPMAS NMR) spectroscopy. The results showed that the EEM contours of water-extracted OM (WEOM) and alkali-extracted OM (AEOM) were similar. Furthermore, solid-state ¹³C CPMAS NMR spectroscopy demonstrated that water extraction could not proportionally pull out aromatic moieties (112--145 ppm) from compost, but the alkali method in proportion extracted both carbohydrates (65--85 ppm) and aromatic moieties. The results suggest that AEOM may better reflect the bulk OM composition of compost, and one should be cautious when applying WEOM as an alternative indicator of total compost OM. Further investigations demonstrated that, compared to carbohydrates, aromatic moieties played a predominant role in growth suppression of Lepidium sativum L. seeds and Trichoderma harzianum.

Key Words: excitation-emission matrix spectroscopy, extracted organic matter, fluorescence reginal integration analysis, nuclear magnetic resonance spectroscopy

Citation: Luo, Y. H., Zhang, D. Q., Yu, G. H. and Shen, Q. R. 2013. Aromatic moieties from matured chicken manure and agriculture residues compost suppress growth of Lepidium sativum L. and Trichoderma harzianum. Pedosphere. 23(6): 826-834.

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