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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water resources and hydroinformatics : Evaluation of management practices using crop water productivity in a semi-aridtropical watershed Ęc...
Evaluation of management practices using crop water productivity in a semi-aridtropical watershed Ęc a case study of singur-manjeera basin in telangana, india
Author : GAUTAM, P.V.N.(1), & PHANINDRA, K.B.V.N.(2)
ABSTRACT
Effective management of irrigation water requires a prior knowledge of crop water requirement. This study
aims at understanding water-plant-yield relations at sub-catchment scale, by analyzing crop water productivity
(CWP) considering various management scenarios. A pre-calibrated (for catchment outflows and nitrate
loads) hydrologic model of the Singur-Manjeera Basin in Telangana, India was considered in the present
study. Process based hydrologic model, SWAT was used to simulate crop yield and groundwater depths on
daily time step for the irrigation years 2013-15. Data on meteorological, soil, land-use, crop, irrigation, and
management practices was provided using geographical interface ArcSWAT. A total of 584 hydrological
response units (HRUs), 20 sub basins, and 20 reaches were delineated. Model calibration (for crop yield and
groundwater depth) was performed at sub-basin level specific to each crop class using SUFI-2 algorithm in
SWATCUP. The calibrated model was further applied to evaluate the impact of various conservation practices
by considering changes in land use, copping pattern, climate, and fertilizer application. Statistical analysis was
performed to rank the management practices (specific to the region) considering higher CWP and lower
groundwater nitrate loads
File Size : 454,462 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water resources and hydroinformatics
Date Published : 19/08/2015
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