請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/44702
標題: Impacts of monosodium glutamate industrial wastewater on plant growth and soil characteristics
作者: Singh, S.
楊秋忠
Rekha, P.D.
Arun, A.B.
Young, C.C.
關鍵字: Monosodium glutamate
Wastewater
Plant nutrition
Nitrogen
vegetables
nitrate
sludge
yeast
paper
期刊/報告no:: Ecological Engineering, Volume 35, Issue 10, Page(s) 1559-1563.
摘要: Research into utilization of monosodium glutamate industrial wastewater (MSGW) as a plant nutrient source was undertaken. The physico-chemical and microbiological characteristics of MSGW were analyzed in detail. Effect of MSGW on early growth of Chinese cabbage (Brassica rapa L cv. Pekinensis) and maize (Zea mays L. cv. Bright Jean) was tested by the seed germination bioassay. Subsequently, in a greenhouse pot experiment using the same plant species, effects of MSGW application rates on the plant biomass yield, nitrogen content and soil properties were analyzed. The MSGW was characterized by high levels of N (56.7 g l(-1)), organic C (344.6 g l(-1)), total solids (600 g l(-1)) and other minerals. At MSGW concentrations below 1%, germination indices for both the plant species were significantly (p<0.01) higher than the control. Further, the greenhouse study results indicated significant increase in the plant biomass yield at MSGW application rates of 5000 and 7500Iha(-1). As the MSGW dose increased, the biomass yield decreased, decreasing the N-use efficiency. Maize showed significantly higher wastewater N-use efficiency compared to the Chinese cabbage. Although the total culturable bacterial and fungal counts in the raw MSGW were low, addition of MSGW to the soil increased the soil microbial activities and soil respiration. Soil organic C was also increased by the addition of MSGW, due to the presence of significant amounts of organic C in the wastewater. This preliminary study demonstrates that by proper management of the pH and optimization of application rate, MSGW can be utilized as a nutrient source for plant growth. Further long-term field studies to evaluate the environmental impact of MSGW usage in agriculture are being designed to reduce the environmental risks associated with the reuse of this underutilized wastewater in the agriculture. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/44702
ISSN: 0925-8574
文章連結: http://dx.doi.org/10.1016/j.ecoleng.2009.06.002
顯示於類別:土壤環境科學系

文件中的檔案:
沒有與此文件相關的檔案。


在 DSpace 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。