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Journal of Agriculture ›› 2021, Vol. 11 ›› Issue (9): 24-27.doi: 10.11923/j.issn.2095-4050.cjas20200200026

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The Threshold Value of the Addition Amount of Amino Acid Waste in Manure

Qiao Yan(), Hu Cheng, Zhang Zhi, Liu Donghai, Chen Yunfeng, Li Shuanglai()   

  1. Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, Hubei, China
  • Received:2020-02-19 Revised:2020-05-03 Online:2021-09-20 Published:2021-09-30
  • Contact: Li Shuanglai E-mail:297463471@qq.com;156691670@qq.com

Abstract:

The amino acid waste is a good additive for manure because of its low cost and rich in nutrients. Estimating the threshold addition amount of amino acid waste will provide an important evidence for the development of bio-organic fertilizer. This study evaluated the safety of the manure which has been added with liquid amino acid waste. The addition amount included seven levels from 0 to 15%. The simulation experiment was conducted to analyze pH, EC, Cl - concentration, and seed germination index (GI). The results showed that pH was steady within 3% and decreased with the increasing addition amount. The EC and Cl - concentration showed an improving trend, and the Cl - concentration was lower than 3% at the 10% addition level. The GI could be more than 75% at 1% addition level, however, the GI plunged at the 3% addition level. Therefore, the addition level of amino acid waste in manure could be controlled at 3%, the safety threshold value for developing bio-organic fertilizer is recommended at 1%.

Key words: Manure, Amino Acid Waste, Cl- Concentration, Germination Index, Threshold Value

CLC Number: