Impact of Climate Variability on the Rice Yield in Uttar Pradesh: an Agro-Climatic Zone Based Study

Bhatt, Diva; Sonkar, Geetika; Mall, R. K.

doi:10.1007/s40710-019-00360-3

Cited by 38 publications

(16 citation statements)

References 48 publications

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“…The maximum temperature exhibits the inverse relationship to rice yield in the Gujranwala and Multan regions during the heading and flower stages. The rise in maximum temperature gives rise to cellular injury and increases the respiration rate and photosynthesis for the flowering stage (Bhatt, Sonkar, & Mall, 2019; Dabi & Khanna, 2018; Modarresi, Nikpey, & Mikpey, 2015). In the same way, the lowest minimum temperature declares a significant inverse link to rice crop in the Gujranwala, Faisalabad, and Multan zones during the re‐plantation stage.…”

Section: Resultsmentioning

confidence: 99%

Analysing the impacts of climate variability on the yield of Kharif rice over Punjab, Pakistan

Abbas

Dastgeer

2021

Natural Resources Forum

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Rainfall and temperature are essential climate parameters that determine crop yield variability at a regional level. The purpose of this study is to analyse the impacts of climate variability on the Kharif rice crop in the Punjab regions, Pakistan for the period of 1979–2018. Skewness and kurtosis, standardization, and Mann–Kendall methods were used to measure the effects of climate variability on Kharif rice yield over the Punjab regions, Pakistan. As compared to other regions, high variability in rice yield is found in the Sargodha region. Results revealed that high maximum and minimum temperatures were noticed in all investigated regions of Punjab. More variation in minimum temperature is detected than the maximum temperature in the Central region. The regions in Southern and Western Punjab were mostly influenced by maximum temperature. Mean temperature shows a significant negative relationship to rice yield during a vegetative phase in the Gujranwala and Rawalpindi regions. The maximum temperature has a negative significant effect on the plant establishment resulting in a reduction in the number of rice plants during the tillering and stem elongates stages in Bahawalpur and Sargodha regions. In the Gujranwala and Multan regions, high maximum temperature increases the floral initiation in the rice plant which reduces the rice grain weight in the heading and flowering stages. The minimum temperature declares a significant negative effect on the Kharif yield of rice in the Gujranwala, Faisalabad, and Multan zones during the re‐plantation stage. Rainfall has a significant positive impact on rice yield during the re‐plantation and tillering stages in the Lahore, Sargodha, and D.G. Khan regions, respectively. In other regions, rainfall indicates an insignificant effect in the re‐plantation stage. Overall, rainfall indicates significant effects in re‐plantation and tillering stages in the Lahore, Sargodha, and D.G. Khan zones. The outcomes of the research indicate how the regional variability in rainfall and temperature affects Kharif rice yield in Punjab, Pakistan.

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Section: Resultsmentioning

confidence: 99%

Analysing the impacts of climate variability on the yield of Kharif rice over Punjab, Pakistan

Abbas

Dastgeer

2021

Natural Resources Forum

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“…Importantly, any changes in DTR would lead to an increase in the risks of drought and heat stress Braganza et al . (2004) that in turn may add up to cause crop failure (Mueller and Seneviratne, 2012; Bhatt et al ., 2019), increase morbidity in humans Hirschi et al . (2011) and mortality rate (Yang et al ., 2018).…”

Section: Introductionmentioning

confidence: 99%

Evidence of asymmetric change in diurnal temperature range in recent decades over different agro‐climatic zones of India

Mall

Chaturvedi

Singh

et al. 2021

Intl Journal of Climatology

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Diurnal temperature range (DTR) is an important indicator of climatic change and a critical thermal metric to assess the impact on agriculture and human health. This study investigates the seasonal, annual and decadal changes in the spatio‐temporal trend in DTR and air temperatures (maximum: Tmax and minimum: Tmin) during 1951–2016 and solar radiation (Srad) during 1984–2016 over 14 different agro‐climatic zones (ACZs) in India. The changes in the DTR trend between two time periods:1951–2016 and 1991–2016 (recent period) are also assessed. The results indicate an overall increasing trend in DTR (0.038°C/decade), Tmax (0.078°C/decade, significant), Tmin (0.049°C/decade) during 1951–2016 and Srad (0.10 MJ/m2/day/decade) during 1984–2016. However, a decreasing trend in DTR (−0.02°C/decade) and a significant increasing trend in Tmin (0.210°C/decade) was noted during 1991–2016. The decadal changes showed an evident decline in DTR during the recent period since 1991. The relative increase in Tmin (0.21°C/decade, significant) compared to Tmax (0.18°C/decade) resulted in a decreasing DTR trend. This was evident across the 5 out of the 14 agro‐climatic zones for the 1991–2016 period. The seasonal analysis showed a significant (95%) increasing trend in DTR during pre‐monsoon and monsoon (1951–2016), and a negative trend for the post‐monsoon and monsoon since 1991. There were also interesting spatial differences found with the ACZs in the north‐west, parts of Gangetic plain, north‐east, and central India exhibiting negative DTR trends. The effect of Srad is larger on Tmax than Tmin; therefore, the decrease in Srad in parts of Gangetic plain likely contributed to a smaller increase in Tmax relative to Tmin and led to a decreasing trend in DTR. At the same time, the west coast, east coast, and southern region show positive trends. The observational analysis finds a distinct increase in the Tmin and also highlights the need for future assessments to continue investigate the causes of these spatio‐temporal changes found in this study.

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“…rice and the climate variability especially, the rainfall variability on a basin scale have not been explored much. However, many studies were focussed at the level of country and state (Kang et al 2009;Mishra et al 2013;Guan et al 2015;Reda et al 2015;Dhekale et al 2017;Dubey and Sharma 2018;Prabnakorn et al 2018;Bhatt et al 2019). So, with the rising uncertainty in the rainfall variability across the Gangetic basin, it becomes important to take up the impact studies on crop yield at sub-basin scale to comprehend the regional influence of climate on agriculture.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of Vegetation Response to Seasonal Rainfall in the Gomati River Basin (India) using Earth Observation Data Sets

Bhatt¹,

Kundu²,

Mall³

et al. 2020

JSR

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Present study evaluates the vegetation responses towards the rainfall variability in the Gomati basin during 1901-2015. To accomplish the same, high resolution observed daily gridded rainfall data from India Meteorological Department (IMD) was analysed using non-parametric trend test. The long-term rainfall showed significant decreasing trend (α=0.05) which varied from -0.96 to -4.89 per year. Identified trends in rainfall were then evaluated in tandem with the basin-wide changes in the vegetation signatures during the recent extreme years (two pairs of dry and wet years). Each pair of extreme years was assessed for its seasonal Normalised Difference Vegetation Index (NDVI) related to the seasonal rainfall variations with special emphasis to rice and wheat yields (major crops). Contribution of spatio-temporal occurrences of rainy days with that of the heavy rainfall events was also analysed. The findings suggest that the prevalent basin-wide longterm rainfall deficiency intensified during the extreme dry years e.g. 2002 and 2009 and impacted the health of vegetation in the basin. Vegetation of the basin was found closely related with rainfall variability; regular and well distributed occurrences of rainy days benefited the basin's vegetation as well as the yields of rice and wheat crops.

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Impact of Climate Variability on the Rice Yield in Uttar Pradesh: an Agro-Climatic Zone Based Study

Cited by 38 publications

References 48 publications

Analysing the impacts of climate variability on the yield of Kharif rice over Punjab, Pakistan

Analysing the impacts of climate variability on the yield of Kharif rice over Punjab, Pakistan

Evidence of asymmetric change in diurnal temperature range in recent decades over different agro‐climatic zones of India

Dynamics of Vegetation Response to Seasonal Rainfall in the Gomati River Basin (India) using Earth Observation Data Sets

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