Climate sensitivity of crop yields in the former state of Andhra Pradesh, India

Padakandla, Steven Raj

doi:10.1016/j.ecolind.2016.06.008

Cited by 25 publications

(22 citation statements)

References 21 publications

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“…The positive effect of minimum temperature may not be able to counterbalance the adverse effect of maximum temperature as observed in coefficient values. Our results are almost similar to other studies such as Padakandla (2016) and Pattanayak and Kumar (2014). An increase in area under rice has a positive and significant effect on yield in three rice models.…”

Section: Resultssupporting

confidence: 91%

“…Furthermore, recent investigations tend to employ panel data methods (Deschenes & Greenstone, 2007). The major studies such as Guiteras (2009), Krishnamurthy (2012), Gupta et al (2014) and Padakandla (2016) have used the panel data methods and found significant association between climate factors and crops yields. However, these studies have been unable to measure the effects of climate change on yield variance or risk, though the yield variance was found to be affected by climatic factors in several studies (Cabas et al, 2010; Chen et al, 2004; Isik & Devadoss, 2006; Kim & Pang, 2009; Sarker et al, 2014; Sarker et al, 2019).…”

Section: A Brief Review On Climate Change and Crop Yieldsmentioning

confidence: 99%

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Climate Change Effects on the Crop Yield and Its Variability in Telangana, India

Guntukula

Goyari

2020

Studies in Microeconomics

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This study has examined the effects of climatic factors on mean yields and yield variability of four primary crops (rice, cotton, jowar and groundnut) in Telangana state by applying the Just and Pope production function over a period of 1956–2015. Using the three-stage feasible generalised least squares estimation procedure, we have estimated the production function of four crops. The empirical results have revealed that the effects of changes in climatic factors vary among crops under study. Maximum temperature has a significant adverse effect on rice, cotton and groundnut yields. Minimum temperature has a substantial positive effect on rice, cotton and groundnut. Further, rainfall is adversely related to cotton and groundnut yields. Maximum temperature has appeared as a risk-reducing factor for all study crops while minimum temperature as a risk-enhancing factor for rice, cotton and jowar. Lastly, rainfall has been found as a risk-enhancing factor for rice and groundnut whereas it is a risk-reducing factor for jowar and cotton. Results from the study have important implications on how Telangana’s farming sector will adapt to climate variability and change for sustainable agricultural development. JEL Codes: C23, Q18, Q51, Q54

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Section: Resultssupporting

confidence: 91%

Section: A Brief Review On Climate Change and Crop Yieldsmentioning

confidence: 99%

Climate Change Effects on the Crop Yield and Its Variability in Telangana, India

Guntukula

Goyari

2020

Studies in Microeconomics

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“…However, minimum temperature is statistically insignificant. The cotton results are somewhat consistent with Hebbar, Venugopalan, Prakash, and Aggarwal () and Padakandla ().…”

Section: Resultssupporting

confidence: 87%

Assessing the impact of climate change on Indian agriculture: Evidence from major crop yields

Guntukula

2019

Journal of Public Affairs

121

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This study empirically examines the effect of climate change on the yields of primary food as well as non‐food crops in India. The present study uses annual time‐series data of seven major crops such as rice, wheat, pulses, rapeseeds and mustard, cotton, sugarcane, and groundnut for 58 years (1961–20 17) to assess the influence climatic variables namely rainfall, maximum, and minimum temperatures on crop yields. The empirical findings of the study indicate that a significant effect on major crop yields from rainfall, maximum and minimum temperatures, but the level of impact varies across the crops studied. A rise in rainfall has an adverse effect on food crops except for pulses, however it has a positive relationship with non‐food crops throughout the study period. Further, the average maximum temperature has a positive influence on food and non‐food crops excluding rice. The average minimum temperature has an adverse impact on non‐food crops, but it has a positive association with food crops. The adverse effects of climatic factors on crop yields may be likely to pose severe implications for food and nutritional security. Conclusively, this study recommends taking adaptation activities to cope with the adverse impacts of climate change.

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“…Root O 2 deficiency (hypoxia) limits respirational ATP synthesis and results in an energy crisis and toxicity due to a transition to glycolysis and fermentation [3]. Tobacco plants are susceptible to injury from flooding [4,5] with chlorosis and inhibition of leaf expansion reported in plants exposed for two days to waterlogging [6]. In field-grown tobacco, an inhibition of stem growth and a decrease of water potential occurred within six days following a flooding event [7].…”

Section: Introductionmentioning

confidence: 99%

Stable expression of aquaporins and hypoxia-responsive genes in adventitious roots are linked to maintaining hydraulic conductance in tobacco (Nicotiana tabacum) exposed to root hypoxia

Tan

Zwiazek

2019

PLoS ONE

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Formation of adventitious roots in plants is a common response to hypoxia caused by flooding. In tobacco, after one week of root hypoxia treatment, plants produced twice as many adventitious roots as the aerated plants, but their maximum length was reduced. Hypoxia severely reduced net photosynthesis, transpiration rates, and photosynthetic light responses. Relative transcript abundance of the examined aquaporins in lateral roots was reduced by hypoxia, but in adventitious roots it remained unchanged. This apparent lack of an effect of root hypoxia on the aquaporin expression likely contributed to maintenance of high hydraulic conductance in adventitious roots. Lateral roots had lower porosity compared with adventitious roots and the expression of the ACS (1-aminocyclopropane-1-carboxylate synthase) gene was induced in hypoxic lateral roots, but not in adventitious roots, providing additional evidence that lateral roots were more affected by hypoxia compared with adventitious roots. ATP concentrations were markedly lower in both hypoxic lateral and adventitious roots compared with aerated roots, while the expression of fermentation-related genes, ADH1 (alcohol dehydrogenase 1) and PDC1 (pyruvate decarboxylase 1), was higher in lateral roots compared with adventitious roots. Since root porosity was greater in adventitious compared with lateral roots, the results suggest that the improved O2 delivery and stable root aquaporin expression in adventitious roots were likely the key factors helping flooded tobacco plants maintain high rates of root hydraulic conductance and, consequently, shoot gas exchange.

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Climate sensitivity of crop yields in the former state of Andhra Pradesh, India

Cited by 25 publications

References 21 publications

Climate Change Effects on the Crop Yield and Its Variability in Telangana, India

Climate Change Effects on the Crop Yield and Its Variability in Telangana, India

Assessing the impact of climate change on Indian agriculture: Evidence from major crop yields

Stable expression of aquaporins and hypoxia-responsive genes in adventitious roots are linked to maintaining hydraulic conductance in tobacco (Nicotiana tabacum) exposed to root hypoxia

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