000			04290nab a22003977a 4500
999			_c63499 _d63491
001			63499
003			MX-TxCIM
005			20211006075158.0
008			200115s2020 sz |||p|op||| 00| 0 eng d
022			_a2073-4441 (Online)
024	8		_ahttps://doi.org/10.3390/w12123312
040			_aMX-TxCIM
041			_aeng
100	1		_918380 _aJha, R.K.
245	1	0	_aPredicting the water requirement for rice production as affected by projected climate change in Bihar, India
260			_aBasel (Switzerland) : _bMDPI, _c2020.
500			_aPeer review
500			_aOpen Access
520			_aClimate change is a well-known phenomenon all over the globe. The influence of projected climate change on agricultural production, either positive or negative, can be assessed for various locations. The present study was conducted to investigate the impact of projected climate change on rice’s production, water demand and phenology for the state of Bihar, India. Furthermore, this study assessed the irrigation water requirement to increase the rice production by 60%, for the existing current climate scenario and all the four IPCC climate change scenarios (RCP 2.6, RCP 4.5, RCP 6.0 and RCP 8.5) by the 2050s (2050–2059). Various management practices were used as adaptation methods to analyze the requirement of irrigation water for a 60% increase in rice production. The climate data obtained from the four General Circulation Models (GCMs) (bcc_csm1.1, csiro_mk3_6_0, ipsl_cm5a_mr and miroc_miroc5) were used in the crop growth model, with the Decision Support System for Agrotechnology Transfer (DSSAT) used to simulate the rice yield, phenological days and water demand under all four climate change scenarios. The results obtained from the CERES-Rice model in the DSSAT, corresponding to all four GCMs, were ensembled together to obtain the overall change in yield, phenology and water demand for 10 years of interval from 2020 to 2059. We investigated several strategies: increasing the rice’s yield by 60% with current agronomic practice; increasing the yield by 60% with conservation agricultural practice; and increasing the rice yield by 30% with current agronomic practice as well as with conservation agricultural practices (assuming that the other 30% increase in yield would be achieved by reducing post-harvest losses by 30%). The average increase in precipitation between 2020 and 2059 was observed to be 5.23%, 13.96%, 9.30% and 9.29%, respectively, for RCP 2.6, RCP 4.5, RCP 6.0 and RCP 8.5. The decrease in yield during the 2050s, from the baseline period (1980–2004), was observed to be 2.94%, 3.87%, 4.02% and 5.84% for RCP 2.6, RCP 4.5, RCP 6.0 and RCP 8.5, respectively. The irrigation requirement was predicted to increase by a range of 39% to 45% for a 60% increase in yield using the current agronomic practice in current climate scenario and by 2050s with all the four climate change scenarios from the baseline period (1980–2004). We found that if we combine both conservation agriculture and removal of 30% of the post-harvest losses, the irrigation requirement would be reduced by 26% (45 to 19%), 20% (44 to 24%), 21% (43 to 22%), 22% (39 to 17%) and 20% (41 to 21%) with current climate scenario, RCP 2.6, RCP 4.5, RCP 6.0 and RCP 8.5 conditions, respectively. This combination of conservation practices suggests that the irrigation water requirement can be reduced by a large percentage, even if we produce 60% more food under the projected climate change conditions.
546			_aText in English
650		7	_2AGROVOC _919192 _aWater requirements
650		7	_aRice _gAGROVOC _2 _91243
650		7	_2AGROVOC _91063 _aCrop production
650		7	_2AGROVOC _94770 _aPhenology
650		7	_aFood security _gAGROVOC _2 _91118
650		7	_2AGROVOC _91045 _aClimate change
651		7	_2AGROVOC _93726 _aIndia
700	1		_918381 _aKalita, P.K.
700	1		_919193 _aCooke, R.A.
700	1		_919194 _aKumar, P.
700	1		_919195 _aDavidson, P.C.
700	1		_9953 _aJat, R.K. _8INT3419 _gBorlaug Institute for South Asia
773	0		_dBasel (Switzerland) : MDPI, 2020. _gv. 12, no. 12, art. 3312 _tWater _x2073-4441
856	4		_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/21313
942			_2ddc _cJA _n0