Water Demand in Maize Is Projected to Decrease under Changing Climate in India

Santanu Kumar Bal, Malamal Alickal Sarath Chandran, Sandeep Vadakkemethel Madhavan, Abburi Venkata Maruthi Subba Rao, Narayanan Manikandan, Ramagiri Praveen Kumar, Pramod Valiyaparambil Parameswaran, Shiv Dev Attri, Priyanka Singh, Ashutosh Mohanty and Vinod Kumar Singh
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Santanu Kumar Bal: ICAR-Central Research Institute for Dryland Agriculture, Hyderabad 500059, India
Malamal Alickal Sarath Chandran: ICAR-Central Research Institute for Dryland Agriculture, Hyderabad 500059, India
Sandeep Vadakkemethel Madhavan: ICAR-Central Research Institute for Dryland Agriculture, Hyderabad 500059, India
Abburi Venkata Maruthi Subba Rao: ICAR-Central Research Institute for Dryland Agriculture, Hyderabad 500059, India
Narayanan Manikandan: ICAR-Central Research Institute for Dryland Agriculture, Hyderabad 500059, India
Ramagiri Praveen Kumar: ICAR-Central Research Institute for Dryland Agriculture, Hyderabad 500059, India
Pramod Valiyaparambil Parameswaran: ICAR-Central Research Institute for Dryland Agriculture, Hyderabad 500059, India
Shiv Dev Attri: India Meteorological Department, Lodhi Road, New Delhi 110003, India
Priyanka Singh: India Meteorological Department, Lodhi Road, New Delhi 110003, India
Ashutosh Mohanty: Faculty of Science and Technology, Madhyanchal Professional University, R&D Cell, Ratibad, Bhopal 462044, Madhya Pradesh, India
Vinod Kumar Singh: ICAR-Central Research Institute for Dryland Agriculture, Hyderabad 500059, India

Sustainability, 2022, vol. 14, issue 3, 1-16

Abstract: Crop stage-specific information on the impacts of projected climate change on crop and irrigation water requirements are essential for improving productivity. This study investigated the possible implications of projected climate change on the phenology, effective rainfall (P eff ), crop (CWR) and irrigation water requirements (IWR) of maize in eight locations in India. CWR, P eff and IWR were estimated for seven crop stages viz., emergence, 5th leaf stage, tasseling, silking, milking, dough and maturity during the baseline (1980–2009) and near-century (2022–39) using climate data derived from a subset of 29 general circulation models. The results indicated that mean seasonal maximum temperature, minimum temperature and rainfall were projected to increase in all the locations. Hence, the total crop duration (3–7 days), CWR (8–69 mm) and IWR (1–54 mm) were projected to decrease. The study could identify the specific stages in which the greatest reduction in crop duration, CWR and IWR would occur. Such information will be of immense help to farmers and varietal improvement programs in the study regions in the near future.

Keywords: GCMs; weighted average ensemble; phenology; effective rainfall; crop water requirement; irrigation water requirement (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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