干旱区生态环境知识资源中心(Arid): Irrigation with RO concentrate and brackish groundwater impacts pecan tree growth and physiology

Arid

DOI	10.1016/j.agwat.2020.106328
	Irrigation with RO concentrate and brackish groundwater impacts pecan tree growth and physiology
	Ben Ali, Akram R.; Shukla, Manoj K.; Schutte, Brian J.; Gard, Charlotte C.
通讯作者	Ben Ali, AR
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2020
卷号	240
英文摘要	Water scarcity has become a salient problem in southern New Mexico. A combination of drought and a decrease in surface water for irrigation encouraged to search for other sources of water. Desalination of brackish groundwater (BGW) using reverse osmosis (RO) results in a highly salty water or RO concentrate. In this study, impacts of using BGW and RO concentrate for irrigating pecan trees inside a greenhouse were evaluated. The objective was to determine if pecan trees are suitable for irrigation with BGW and RO concentrate, and evaluate the possible effects on pecan growth and physiological parameters. For each of two growing seasons (2017 and 2018), three irrigation treatments of 0.8, 4.0 (BGW), and 8.0 ds/m (RO) were applied every 14 days for 8 months. Four-year-old pecan trees were planted in pots filled with sandy-loam soil. Response variables included plant height and diameter, as well as physiological data including photosynthetic rate, chlorophyll content, transpiration rate, stomatal conductance, stem water potential, and leaf ions concentrations. Net pecan growth was 2.75 cm less in RO concentrate irrigated pots than control by the end of the second season. Plants irrigated with RO had the lowest chlorophyll content (30.75) and the lowest stem water potential (-17.22 bar). Na+ and Cl- concentrations reached 0.056 and 0.027 meq/l in the leaf samples in RO irrigated pecans. All trees survived the first season but only 75 % of the pecan trees irrigated with BGW and 50 % of those irrigated with RO survived the two seasons of the experiment. This suggested that continuous long-term irrigation with BGW and RO concentrate is not suitable in arid areas and new irrigation scheduling protocols are needed for safe reuse of BGW and RO concentrate.
英文关键词	RO concentrate Chlorophyll Pecan Photosynthetic rate
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000546646400032
WOS关键词	ION UPTAKE ; EXTREME HALOPHYTE ; SALINITY STRESS ; GAS-EXCHANGE ; WATER ; EVAPOTRANSPIRATION ; CHLOROPHYLL ; PARAMETERS ; RESPONSES ; L.
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
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/2XILL650/324971
作者单位	[Ben Ali, Akram R.; Shukla, Manoj K.] New Mexico State Univ, Plant & Environm Sci Dept, POB 30003 MSC-3Q, Las Cruces, NM 88003 USA; [Schutte, Brian J.] New Mexico State Univ, Entomol Plant Pathol & Weed Sci Dept, POB 30003 MSC-3Q, Las Cruces, NM 88003 USA; [Gard, Charlotte C.] New Mexico State Univ, Econ Appl Stat & Int Business Dept, POB 30001 MSC-3CQ, Las Cruces, NM 88003 USA
推荐引用方式 GB/T 7714	Ben Ali, Akram R.,Shukla, Manoj K.,Schutte, Brian J.,et al. Irrigation with RO concentrate and brackish groundwater impacts pecan tree growth and physiology[J]. New Mexico State University,2020,240.
APA	Ben Ali, Akram R.,Shukla, Manoj K.,Schutte, Brian J.,&Gard, Charlotte C..(2020).Irrigation with RO concentrate and brackish groundwater impacts pecan tree growth and physiology.AGRICULTURAL WATER MANAGEMENT,240.
MLA	Ben Ali, Akram R.,et al."Irrigation with RO concentrate and brackish groundwater impacts pecan tree growth and physiology".AGRICULTURAL WATER MANAGEMENT 240(2020).