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Soil microbial biomass, CO2 and NH3 emission and nitrogen use efficiency in a sandy soil amended with recycled dairy products

文献类型： 外文期刊

作者： Liu, Di 1 ; Al Fahd, Marzoq Hadi 2 ; Ali, Esmat F. 3 ; Majrashi, Ali 3 ; Ghoneim, Adel M. 4 ; Ding, Zheli 5 ; Eissa, M 1 ;

作者机构： 1.Jiujiang Univ, Jiangxi Yangte River Econ Zone Res Inst, Jiujiang, Peoples R China

2.King Saud Univ, Fac Food & Agr Sci, Dept Soil Sci, POB 2460, Riyadh 11451, Saudi Arabia

3.Taif Univ, Coll Sci, Dept Biol, POB 11099, At Taif 21944, Saudi Arabia

4.Agr Res Ctr, Field Crops Res Inst, Giza, Egypt

5.Chinese Acad Trop Agr Sci CATAS, Haikou Expt Stn, Haikou, Hainan, Peoples R China

6.Assiut Univ, Fac Agr, Dept Soils & Water, Assiut 71526, Egypt

关键词： Expired dairy products; Yogurt; White cheese; Organic wastes; Recycling

期刊名称：ENVIRONMENTAL TECHNOLOGY & INNOVATION （ 影响因子：5.263； 五年影响因子：5.116 ）

ISSN： 2352-1864

年卷期： 2021 年 23 卷

页码：

收录情况： SCI

摘要： Re-cycling of wastes has many advantages to sustainable development, especially in arid and semi-arid conditions, where organic materials decompose with a high rate causing increases in gas emissions. The aims of this study were to explore the impact of expired dairy products (EDP) on soil microbial biomass and gas emissions from a sandy soil. The expired dairy products were converted to an organic fertilizer and the extracted fertilizer was evaluated in pot and incubation experiments as a nitrogen source for zucchini plants (Cucurbita pepo L). The trial consisted of four treatments i.e., control without any fertilization (C), urea (IF), EDP, and mixture of urea and EDP (MIX). EDP and MIX caused remarkable increases in nutrients availability and leaf uptake compared with C. EDP caused a 17% increase in the cation exchange capacity (CEC), in the other hand it reduced the soil pH by 8% compared with C. The maximum growth was found in zucchini plants that were fertilized with EDP or MIX. EDP and MIX increased the nitrogen use efficiency (NUE) by 37 and 25%, respectively, compared with IF. EDP improved the microbial biomass carbon and nitrogen (MBC and MBN) and this confirmed the ecofriendly behavior of EDP. EDP increased MBC and MBN by 20 and 21% compared with the inorganic fertilization. EDP increased the CO2 emission and minimized NH3 volatilization from the sandy soil. The extracted organic fertilizer is able to supply zucchini plants with its nutrient requirements; moreover, it is an ideal solution to recycle the expired dairy products. (C) 2021 Elsevier B.V. All rights reserved.

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