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DOI	10.1016/j.still.2020.104608
	Can conjunctive use of gypsum, city waste composts and marginal quality water rehabilitate saline-sodic soils?
	Sundha, Parul; Basak, Nirmalendu; Rai, Arvind Kumar; Yadav, Rajender Kumar; Sharma, Parbodh Chander; Sharma, Dinesh Kumar
通讯作者	Basak, Nirmalendu
来源期刊	SOIL & TILLAGE RESEARCH
ISSN	0167-1987
EISSN	1879-3444
出版年	2020
卷号	200
英文摘要	Soil sodicity is major stress limiting crop production in the arid and semi-arid regions where groundwater contains excess salts with variable sodium adsorption ratio (SAR). This study investigated the impact of farmyard manure (F) and city compost in conjunction with gypsum to rehabilitate saline-sodic soil having pH(1: 2) (10.7), electrical conductivity (EC1:2; 3.09 dS m(-1)) and exchangeable sodium (70.3 %). Soil amended with gypsum (25 and 50 % of gypsum requirement, GR) and/or with 10 t ha(-1) F (GR25 F), Karnal (GR25 K) and Delhi compost (GR25D) were incubated at moisture similar to 60 % maximum WHC. One month incubated soils were sequentially leached up to ten pore volumes using saline water of SAR 5 and 15 with constant EC (6 dS m(-1)). The increment in SAR of applied water reduced the cumulative loss of Ca2+, Mg2+, and K+ and increased the release of Na+. Application of amendments and intense leaching decreased the soil pH(s), ECe and alkalinity. Leaching with SAR 5 water decreased SAR of soil saturation extract to 9.7 compared with SAR 15 (17.2). Gapon's selectivity coefficient (K-G) pointed to the greater (0.017) adsorption preference of Ca2+ and Mg2+ in the soil leached with SAR 15 than SAR 5 (0.014) water. Reclamation depends on inherent soil ESP and supply of Ca2+ for exchange phase; K(G)becomes more prioritized when SAR 15 water applied for leaching. Therefore, conjunctive use of gypsum (GR25) with compost is as effective as gypsum (GR50) on decrement of soil pHs and leaching of soluble salts.
英文关键词	Gypsum Saline-sodic soil City waste compost Sodium absorption ratio Exchangeable sodium percent Gapon's selectivity coefficient
类型	Article
语种	英语
国家	India
收录类别	SCI-E
WOS记录号	WOS:000528029900009
WOS关键词	SATURATED HYDRAULIC CONDUCTIVITY ; CALCIUM EXCHANGE EQUILIBRIA ; ORGANIC-MATTER ; ELECTROLYTE CONCENTRATION ; IRON-OXIDES ; MANURE ; RECLAMATION ; DISPERSION ; THRESHOLD ; REDUCTION
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318761
作者单位	ICAR Cent Soil Salin Res Inst, Karnal 132001, Haryana, India
推荐引用方式 GB/T 7714	Sundha, Parul,Basak, Nirmalendu,Rai, Arvind Kumar,et al. Can conjunctive use of gypsum, city waste composts and marginal quality water rehabilitate saline-sodic soils?[J],2020,200.
APA	Sundha, Parul,Basak, Nirmalendu,Rai, Arvind Kumar,Yadav, Rajender Kumar,Sharma, Parbodh Chander,&Sharma, Dinesh Kumar.(2020).Can conjunctive use of gypsum, city waste composts and marginal quality water rehabilitate saline-sodic soils?.SOIL & TILLAGE RESEARCH,200.
MLA	Sundha, Parul,et al."Can conjunctive use of gypsum, city waste composts and marginal quality water rehabilitate saline-sodic soils?".SOIL & TILLAGE RESEARCH 200(2020).