干旱区生态环境知识资源中心(Arid): Comparing the effect of different irrigation water scenarios on arid region pecan orchard using a system dynamics approach

Arid

DOI	10.1016/j.agwat.2022.107547
	Comparing the effect of different irrigation water scenarios on arid region pecan orchard using a system dynamics approach
	Palmate, Santosh S.; Kumar, Saurav; Poulose, Thomas; Ganjegunte, Girisha K.; Chaganti, Vijayasatya N.; Sheng, Zhuping
通讯作者	Palmate, SS
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2022
卷号	265
英文摘要	Water scarcity and soil salinization in arid regions have made desalination a competitive alternative source for irrigation. Perceptions of a higher cost and other misconceptions about desalinated water have limited its broader usage in agriculture. In this study, we have focused on understanding the suitability of using desalinated water as a substitute for saline water in the pecan (Carya illinoinensis) orchards of southwest Texas. Pecan is a perennial high-value nut crop that cannot be easily replaced. Therefore, it represents a perfect case study for the application of desalinated water. A recently developed system dynamic model, SMITUV (System Dynamic Modeling of Infiltration, Solute Transport, and Root Water Uptake in Vadose Zone), was modified to assess the effects of irrigation with desalinated water when soil-water salt content increased above pecan tolerance levels. This model simulated five irrigation scenarios with different fractions of river water and saline groundwater. As expected, to sustain the same level of pecan production, a higher amount of desalinated water was needed with increasing amounts of groundwater in the irrigation mix. Soil texture had a significant influence on the amount of desalinated water required. For sandy and silty soils, the 100% river water scenario required no additional desalinated water. Clayey soils could not sustain high production even in a 100% river water scenario. An economic analysis showed that pecan operations might be viable in non-clayey regions for some irrigation mixture even after factoring in the cost of using desalinated water. However, current desalination techniques and associated costs were economically unviable for sustaining pecan in regions with saline groundwater and clayey soils. This study also demonstrated the application of SMITUV and system dynamic modeling as a decision making tool to assist growers in understanding the farm-scale applicability of desalinated water.
英文关键词	Irrigation Salinity Desalinated water System dynamic model SMITUV Pecan orchard
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000792812000007
WOS关键词	SOIL-SALINITY ; HYDRAULIC CONDUCTIVITY ; SALT PRODUCTION ; REJECT BRINE ; MODEL ; PLANT ; MANAGEMENT ; ENERGY ; CROP ; TOLERANCE
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/391597
推荐引用方式 GB/T 7714	Palmate, Santosh S.,Kumar, Saurav,Poulose, Thomas,et al. Comparing the effect of different irrigation water scenarios on arid region pecan orchard using a system dynamics approach[J],2022,265.
APA	Palmate, Santosh S.,Kumar, Saurav,Poulose, Thomas,Ganjegunte, Girisha K.,Chaganti, Vijayasatya N.,&Sheng, Zhuping.(2022).Comparing the effect of different irrigation water scenarios on arid region pecan orchard using a system dynamics approach.AGRICULTURAL WATER MANAGEMENT,265.
MLA	Palmate, Santosh S.,et al."Comparing the effect of different irrigation water scenarios on arid region pecan orchard using a system dynamics approach".AGRICULTURAL WATER MANAGEMENT 265(2022).