Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
T2a-27P -1388
Crop Water Requirement and Irrigation Water Management in Changing
Climate for Sugarcane Crop in Baghpat District, U.P.
Gaurav Sharma, Sandeep Chaudhary, Dev Kumar
Krishi Vigyan Kendra, Baghpat, Uttar Pradesh, India, Pin code-250101
Variability in the rainfall pattern over the decade due to human-indulged activities inculcated
several miserable circumstances that have elevated the sequences of unpredictable
consequences in terms of frequent occurrences of extreme weather events such as drought,
storms, flood, heat waves, and increase in water and vector-borne disease issues. Changes in
the climatic parameters viz., maximum and minimum temperature, rainfall, relative humidity,
sunshine hours, wind speed, and the rate of evapotranspiration had causes severe implications
in terms of inadequate water availability, decreased crop production and its yields. Therefore,
for effectual crop production and to render the impacts and complications posed by climate
variability and human-induced activities efficient irrigation water management is critical. The
crop water requirement (CWR) and irrigation water management strategies had been
formulated as an objective of this extended summary for the sugarcane crop for the Baghpat
district, Uttar Pradesh which will helps in rendering the impediment put forwards. In the
above context variability in the rainfall pattern has been evaluated based on seasonal and
annual rainfall, number of rainy days, 1-day maximum rainfall whereas crop water
requirement (CWR) and irrigation requirement (IR) has been evaluated using CROPWAT
software. The scenario based CWR and IR has been computed for normal year, drought year,
flooded year and average year (35 years) which was evaluated based on departure analysis of
seasonal rainfall.
Methodology
For climate change detection the expert team on climate change detection indices (ETCCDI)
were evaluated. Based on the indices rainy days are counted as days when daily precipitation
was greater than 2.5mm and 1-day maximum rainfall was computed as the precipitation
observed in a complete year. Crop water requirement is defined as the amount of water
needed to compensate the evapotranspiration loss from the cropped field. The crop water
requirement is computed as a multiple of crop coefficient value and reference
evapotranspiration. FAO Penman–Monteith method (Abeysiriwardana et al., 2022) has been
used for computing the reference evapotranspiration using CROPWAT software (Surendran
et al., 2015). India Meteorological Department (IMD) criterion was used to evaluate drought
year as an area which receives a seasonal rainfall less than 75% of its normal (Appa Rao,
1986). The daily gridded rainfall data of 35 years (1986-2020) had been used to carry out the
analysis which was downloaded from Indian Meteorological department (IMD), Pune while
Climate resilient agriculture for risk mitigation
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