干旱区生态环境知识资源中心(Arid): Modeling corn growth and root zone salinity dynamics to improve irrigation and fertigation management under semi-arid conditions

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DOI	10.1016/j.agwat.2019.105952
	Modeling corn growth and root zone salinity dynamics to improve irrigation and fertigation management under semi-arid conditions
	Chauhdary, Junaid Nawaz 1,2; Bakhsh, Allah 2; Ragab, Ragab 3; Khaliq, Abdul 2; Engel, Bernard A.4; Rizwan, Muhammad 5,6; Shahid, Muhammad Adnan 2; Nawaz, Qamar 7
通讯作者	Chauhdary, Junaid Nawaz
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2020
卷号	230
英文摘要	Modeling is an advanced technique to study the effects of crop management practices as management scenario simulations in a convenient and economical way. A multi seasonal study was conducted on corn, sown under drip irrigation, to assess its growth under three irrigation intervals (I-1: irrigation on daily basis, I-2: irrigation on 3rd day and I-3: irrigation on 5th day) and three fertigation levels [F-1:100 % RFA (recommended fertigation applications), F-2:75 % RFA and F-3:50 % RFA)] of two types of fertilizers (M-1: Imported and M-2: Indigenous). The SALTMED model was calibrated and validated, using data collected from experiments, to explore different management scenarios of corn production. The accuracy of the validation process was examined by root mean square error (RMSE), percentage of difference (%D), coefficient of residual mass (CRM) and coefficient of determination (R-2). The results showed that corn produced statistically highest plant height (183.7 cm), dry matter (16.9 t/ha), grain yield (8.57 t/ha) and water productivity (1.52 kg/m(3)) under I-l in comparison to that under other irrigation intervals. Similarly, M-1 and F-1 produced statistically highest plant height, dry matter, grain yield and water productivity as compared to M-2 and other fertigation levels, respectively. SALTMED simulated soil moisture and soil salinity accurately with average values of RMSE, R-2 and CRM as 0.013, 0.850 and -0.002, respectively for soil moisture and 0.479, 0.864 and 0.130, respectively for soil salinity. The SALTMED simulations showed good results also for grain yield (RMSE = 0.475, R-2 = 0.873, CRM = -0.0013 and highest %D = -4.9 %) and dry matter (RMSE = 0.596, R-2 = 0.909, CRM = -0.027 and highest %D = 4.2 %). Overall, it was concluded that corn should be irrigated on daily basis under drip irrigation and fertilized with 100 % RFA. Moreover, the SALTMED model proved to be a useful tool for simulations of different management scenarios regarding corn growth and root zone salinity dynamics with reliable results under semi-arid conditions.
英文关键词	Corn Fertigation level Irrigation interval Fertilizer type SALTMED model
类型	Article
语种	英语
国家	Pakistan ; England ; USA ; Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000525283000009
WOS关键词	GENERIC INTEGRATED APPROACH ; WATER-USE EFFICIENCY ; ZEA-MAYS L. ; SALTMED-MODEL ; FIELD MANAGEMENT ; SOIL-MOISTURE ; DRIP IRRIGATION ; DRY-MATTER ; YIELD ; CROP
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/2XILL650/313947
作者单位	1.Univ Agr Faisalabad, Water Management Res Ctr, Faisalabad 38040, Pakistan; 2.Univ Agr Faisalabad, Dept Irrigat & Drainage, Faisalabad 38040, Pakistan; 3.CEH, Wallingford, Oxon, England; 4.Purdue Univ, Dept Agr & Biol Engn, W Lafayette, IN 47907 USA; 5.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Remote Sensing & Geospatial Sci, Lanzhou 730000, Peoples R China; 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 7.Univ Agr Faisalabad, Dept Comp Sci, Faisalabad 38040, Pakistan
推荐引用方式 GB/T 7714	Chauhdary, Junaid Nawaz,Bakhsh, Allah,Ragab, Ragab,et al. Modeling corn growth and root zone salinity dynamics to improve irrigation and fertigation management under semi-arid conditions[J],2020,230.
APA	Chauhdary, Junaid Nawaz.,Bakhsh, Allah.,Ragab, Ragab.,Khaliq, Abdul.,Engel, Bernard A..,...&Nawaz, Qamar.(2020).Modeling corn growth and root zone salinity dynamics to improve irrigation and fertigation management under semi-arid conditions.AGRICULTURAL WATER MANAGEMENT,230.
MLA	Chauhdary, Junaid Nawaz,et al."Modeling corn growth and root zone salinity dynamics to improve irrigation and fertigation management under semi-arid conditions".AGRICULTURAL WATER MANAGEMENT 230(2020).