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Please use this identifier to cite or link to this item:
http://krishi.icar.gov.in/jspui/handle/123456789/68170
Title: | Climate change impacts on crop water balance of maize (Zea mays L.) in lower Krishna River Basin of South India |
Other Titles: | Not Available |
Authors: | K. S. Reddy1,*, M. Kumar1, V. Maruthi2, P. Lakshminarayana1, Vijayalakshmi1, B. Umesha1 and Y. V. K. Reddy1 |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::Central Research Institute of Dryland Agriculture |
Published/ Complete Date: | 2016-08-10 |
Project Code: | Not Available |
Keywords: | Climate change, crop evapotranspiration, effective rainfall, irrigation water requirement, maize. |
Publisher: | Not Available |
Citation: | K.S. Reddy et al. |
Series/Report no.: | Not Available; |
Abstract/Description: | Maize (Zea mays L.) is predominantly grown as a commercial crop in river basins of lower Krishna, Telangana, South India. A long-term crop water balance analysis for maize in two sowing windows (normal sowing: 20 June; late sowing: 25 July) was done for A1b climate change scenario using the downscaled climate data from the GCM model ECHAM5. The crop water balance parameters such as rainfall, effective rainfall, crop evapotranspiration (ET) and irrigation requirements of maize during the two sowing windows were estimated using the CROPWAT model for the base period (1961–90) and long-term period (2011–50; mid-century). In the normal sowing window of maize, there was significant variation in the decadal crop ET (24% to 28%) and irrigation requirements (–7% to 26%) having increasing trend during 2011–2050 over base period. The amount of average decadal rainfall and effective rainfall decreased during 2011–2050 in the range 6% to –23% and 10% to –7% respectively, over the base period. The decadal average rainfall and effective rainfall showed increasing trends of 147–151% and 96–110% respectively, over base period in late sowing window. Also, the crop ET and irrigation requirements exhibited a decreasing trend. The study indicates a shift in the seasonal rainfall in normal sowing window during June to July and it extends up to October and November after the season, indicating more rainfall in late sowing window of maize and scope for rainwater harvesting in the lower Krishna river basin for sustaining maize production. |
Description: | Climate change impacts on crop water balance of maize |
ISSN: | Not Available |
Type(s) of content: | Journal |
Sponsors: | NICRA |
Language: | English |
Name of Journal: | Current Science |
Journal Type: | Research |
NAAS Rating: | 6.73 |
Impact Factor: | 0.73 |
Volume No.: | 116(3) |
Page Number: | 561-565 |
Name of the Division/Regional Station: | NRM |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/68170 |
Appears in Collections: | NRM-CRIDA-Publication |
Files in This Item:
File | Description | Size | Format | |
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J 7.pdf | Climate change impacts on crop water balance of maize | 3.86 MB | Adobe PDF | View/Open |
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