Arid
DOI10.1002/ldr.2841
Organic carbon, nutrient, and salt dynamics in saline soil and switchgrass (Panicum virgatum L.) irrigated with treated municipal wastewater
Ganjegunte, Girisha1; Ulery, April2; Niu, Genhua1; Wu, Yanqi3
通讯作者Ganjegunte, Girisha
来源期刊LAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
EISSN1099-145X
出版年2018
卷号29期号:1页码:80-90
英文摘要

This study was conducted to evaluate the effects of treated municipal wastewater irrigation on soil organic carbon (SOC), soil macronutrients, Na, Cl, and SO4 dynamics in soil as well as switchgrass (Panicum virgatum L.) shoots under greenhouse conditions. Average SOC concentrations in upper 60cm increased significantly from the prestudy level of 18Mgha(-1) to between 21 and 23Mgha(-1) at the end of the study (2009-2015) under different treatments. Annual average rate of increase for all four depths (upper 60cm) ranged from 0.6 to 0.8Mgha(-1)y(-1). Nutrient concentration in soil samples was positively influenced by fertilizer application. N, P, and K concentrations in soil and switchgrass shoots were significantly positively correlated. On average, Alamo switchgrass cultivar under irrigated conditions removed 28.5 to 35.7gNm(-2), 2.52 to 3.48gPm(-2), and 29.6 to 38.4gKm(-2), and differences between freshwater and wastewater treatments were not significant. This indicated that wastewater irrigation did not result in excessive accumulation of nutrients in switchgrass tissue. Although salt constituents such as Na, Cl, and SO4 concentrations in soil increased over time as a result of wastewater irrigation, their concentration did not increase in switchgrass shoots, indicating a salt exclusion mechanism. The results of this greenhouse study indicated that the use treated municipal wastewater for irrigation can improve SOC contents of salt affected lands and extend the availability of freshwater in arid regions.


英文关键词"Alamo’ switchgrass cultivar nutrients salinity and sodicity soil organic carbon wastewater
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000423123700008
WOS关键词BIOMASS PRODUCTION ; PRAIRIE CORDGRASS ; PLANT-GROWTH ; SODIC SOIL ; ACCUMULATION ; QUALITY ; MANAGEMENT ; REMOVAL ; CROP ; GERMINATION
WOS类目Environmental Sciences ; Soil Science
WOS研究方向Environmental Sciences & Ecology ; Agriculture
来源机构New Mexico State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/211465
作者单位1.Texas A&M Univ Syst, Texas A&M Agrilife Res, El Paso, TX 79927 USA;
2.New Mexico State Univ, Plant & Environm Sci Dept, Las Cruces, NM 88003 USA;
3.Oklahoma State Univ, Plant & Soil Sci, Stillwater, OK 74078 USA
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Ganjegunte, Girisha,Ulery, April,Niu, Genhua,et al. Organic carbon, nutrient, and salt dynamics in saline soil and switchgrass (Panicum virgatum L.) irrigated with treated municipal wastewater[J]. New Mexico State University,2018,29(1):80-90.
APA Ganjegunte, Girisha,Ulery, April,Niu, Genhua,&Wu, Yanqi.(2018).Organic carbon, nutrient, and salt dynamics in saline soil and switchgrass (Panicum virgatum L.) irrigated with treated municipal wastewater.LAND DEGRADATION & DEVELOPMENT,29(1),80-90.
MLA Ganjegunte, Girisha,et al."Organic carbon, nutrient, and salt dynamics in saline soil and switchgrass (Panicum virgatum L.) irrigated with treated municipal wastewater".LAND DEGRADATION & DEVELOPMENT 29.1(2018):80-90.
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