"9497","10","archive","1305",,,"disk0/00/00/94/97","2016-05-10 06:27:07","2016-10-18 08:39:31","2016-05-10 06:27:07","article",,,"show",,,,"","","","","","","","","","",,,,"Garg","K K","","","","","","","Garg","K K","","","","",,,,,"","",,,,,"","","ICRISAT (Patancheru)","India","A simple and farmer-friendly decision support system for enhancing water use efficiency in agriculture: tool development, testing and validation","pub","s2.11","CRPS2","crp1.13","public",,,"Consumptive water use, Semi-arid tropics, Water impact calculator, Irrigation scheduling, Water balance, Decision support system, Water use, Agriculture",,"We thank the team at the ICRISAT
Development Center (IDC) and Resilient Dryland Systems (RDS),
ICRISAT, India for collecting and providing historical research data
and their support. We are grateful to Sustainable Agriculture Initiative
platform for providing research grant for developing WIC during 2010–
11. We acknowledge consortium partners, BAIF and DEEP NGOs and
farmers for conducting field experiments and collecting research data at
Tonk, Ranga Reddy and Jamnagar. Support of Jain Irrigation Private
Ltd in installing drip irrigation system in farmers’ fields is acknowledged.
Funding support for analysing data and preparing manuscript
from CGIAR Research Program on Water, Land and Ecosystems are
duly acknowledged.This article is part of a special edition on Soil and Water Management (Volume 110, Issue - 09, May 10, 2016)","In the semi-arid tropics (SAT) farmers practice calendar-
based irrigation scheduling, which generally
results in over irrigation and poor water use efficiency.
The lack of a simple decision tool to decide
timing and quantity of water to be applied is a bottleneck.
An Excel-based decision support system termed
Water Impact Calculator (WIC) is developed using
data collected at the ICRISAT, which were validated
at three pilot sites on farmers’ fields in Rajasthan,
Gujarat and Telangana. Field studies were conducted
under two land-form treatments (broad bed and furrow
(BBF) and flat fields); and irrigation water was
applied following two different methods (drip and
flood). The data collected at micro-watershed at the
ICRISAT and three other sites showed that WIC
could be used under wide range of soil and rainfall
conditions. WIC simulated soil moisture was comparable
with the observed moisture data, which forms
the basis of irrigation scheduling. The WIC-based
water balance at these experimental sites showed that
number and amount of irrigation could be reduced by
30–40% using WIC-based irrigation scheduling without
compromising the crop yield. The WIC could be a
potential tool for water resources planning and efficient
management at the field and watershed scale in
the SAT.","2016-05-10","published",,"Current Science","110","09","Indian Academy of Sciences",,"1716-1729",,,,,,"10.18520/cs/v110/i9/1716-1729",,,,,"TRUE",,"0011-3891",,,,,,"","http://dx.doi.org/10.18520/cs/v110/i9/1716-1729","","",,"","",,,,,,"",,,,,,,"",,,,,"",,,,,"","",,,,,"","",,,,,
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