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A simple and farmer-friendly decision support system for enhancing water use efficiency in agriculture: tool development, testing and validation

OAR@ICRISAT

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Relation http://oar.icrisat.org/9497/
http://dx.doi.org/10.18520/cs/v110/i9/1716-1729
10.18520/cs/v110/i9/1716-1729
 
Title A simple and farmer-friendly decision support system for enhancing water use efficiency in agriculture: tool development, testing and validation
 
Creator Garg, K K
Wani, S P
Patil, M D
 
Subject Soil Science
 
Description 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.
 
Publisher Indian Academy of Sciences
 
Date 2016-05-10
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/9497/1/1716.pdf
Garg, K K and Wani, S P and Patil, M D (2016) A simple and farmer-friendly decision support system for enhancing water use efficiency in agriculture: tool development, testing and validation. Current Science, 110 (09). pp. 1716-1729. ISSN 0011-3891