Impact of climate change on sorghum productivity in India and its adaptation strategies

Rao, V. U. M.; Rao, B. Bapuji; Pramod, V. P.; Chowdary, P. S. B.; Kumar, Pradeep; Bharathi, G.; Patel, N. R.; P.MUKESH, None

doi:10.54386/jam.v20i2.517

Cited by 15 publications

(9 citation statements)

References 4 publications

(5 reference statements)

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“…Conversely, grain sorghum was negatively affected by climate warming, reducing its yield by 0.27 Mg ha −1 for each degree increase in mean annual temperature. These results are consistent with previous studies conducted in different types of environments [7,20,21,23,24,32], and can be explained through various mechanisms. On the one hand, temperature could directly affect yield, through (a) the shortening of the growth cycle due to a rapid accumulation of growing degree days [60]; and (b) plants are more exposed to heat stress, reducing photosynthesis rates during anthesis and grain filling, and pollen germination affecting its fertility [61,62].…”

Section: Discussionsupporting

confidence: 93%

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Modeling Climate Warming Impacts on Grain and Forage Sorghum Yields in Argentina

et al. 2020

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Sorghum is the world’s fifth major cereal in terms of production and acreage. It is expected that its growth will be affected by the increase in air temperature, an important component of global climate change. Our objective was to use the Agricultural Land Management Alternatives with Numerical Assessment Criteria (ALMANAC) model to (a) evaluate the impact of climate warming on forage and grain sorghum production in Argentina and (b) to analyze to what extent yield changes were associated with changes in water or nitrogen stress days. For model calibration, we used previous information related to the morpho-physiological characteristics of both sorghum types and several soil parameters. We then used multiyear field data of sorghum yields for model validation. Yield simulations were conducted under three possible climate change scenarios: 1, 2, and 4 °C increase in mean annual temperature. ALMANAC successfully simulated mean yields of forage and grain sorghum: root mean square error (RMSE): 2.6 and 1.0 Mg ha−1, respectively. Forage yield increased 0.53 Mg ha−1, and grain yield decreased 0.27 Mg ha−1 for each degree of increase in mean annual temperature. Yields of forage sorghum tended to be negatively associated with nitrogen stress (r = −0.94), while grain sorghum yield was negatively associated with water stress (r = −0.99). The information generated allows anticipating future changes in crop management and genetic improvement programs in order to reduce the yield vulnerability.

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Section: Discussionsupporting

confidence: 93%

“…Several studies have assessed the impact of climate change on sorghum production in Africa, South Asia, Oceania, and North America [7,[20][21][22][23][24][25][26]. Except for Pembleton et al [22], the studies focused on grain sorghum, so knowledge about the effect of global warming on forage sorghum is scarce.…”

Section: Introductionmentioning

confidence: 99%

Modeling Climate Warming Impacts on Grain and Forage Sorghum Yields in Argentina

et al. 2020

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“…Since the twentieth century, climate change has been a major concern that threatens the livelihoods of humans and other living organisms (Kowshika et al, 2021). Future climate change projections for India indicate distinct rise in temperature and increased variability in rainfall (Sandeep et al, 2018). Climate change has a variety of effects on agriculture, including decreased crop productivity, incidence of pest and diseases and change in cropping pattern.…”

Section: Introductionmentioning

confidence: 99%

Farmers’ Acuity on Climate Change in the Central Dry Zone of Karnataka

Ashoka¹,

Harshavardhan²,

Hongal³

et al. 2022

ijee

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To counteract the vulnerability results from climate change, it is critical to understand farmers’ viewpoints. In Karnataka, farmers’ perspectives, implications, adaptive measures, and barriers were investigated during 2021 by collecting the data from farmers using multistage random sample technique. Farmers witnessed significant changes in temperature, rainfall distribution, emergence of new plant pests and infirmity over time as a result of the introduction of new cultivars/crops, and the occurrence of drought/flood, according to the data. Crop harvests were inconsistent, depleted common property resources, and costs had risen as a result. Cultivation of stress-tolerant cultivars, drilling bore wells, novel plant protection molecules, changing sowing/harvesting dates, and water-saving techniques were among the adaptation strategies. Climate adaptation challenges in the region included highcost farm inputs for climate-smart agriculture, labour scarcity, lack of shared water resources, and knowledge gaps. For the best results, adaptation strategies should be implemented “collectively” rather than “individually”. Weather based Crop insurance must be marketed with assured indemnity.

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“…Especially in the case of temperature, the major adverse impact on the yield of rice was noticed due to increases in the minimum temperature compared to increases in the maximum temperature (Bhatt et al, 2019 ). Similarly, the rise in mean temperature led to a decline in the productivity of crops like wheat by one to eight percent (Daloz et al, 2021 ; Dhyani et al, 2021 ) in the Indo-Gangetic plains of India, kharif (rainy season) sorghum (Sandeep et al, 2018 ) in southern and western India, and maize crops in northern states of India (Gbetibouo et al, 2010 ). Similarly, in the case of pulses, fluctuating temperature and disproportionate rainfall affected pulse productivity though the per capita income from agriculture has had a positive impact on the yield of pulses.…”

Section: Resultsmentioning

confidence: 99%

Climate change and vulnerability of agribusiness: Assessment of climate change impact on agricultural productivity

Mohapatra

Mohapatra²,

Han³

et al. 2022

Front. Psychol.

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The current study has mapped the impact of changes in different climatic parameters on the productivity of major crops cultivated in India like cereal, pulses, and oilseed crops. The vulnerability of crops to different climatic conditions like exposure, sensitivity, and adaptive indicators along with its different components and agribusiness has been studied. The study uses data collected over the past six decades from 1960 to 2020. Analytical tools such as the Tobit regression model and Principal Component Analysis were used for the investigation which has shown that among climatic parameters, an increase in temperature along with huge variations in rainfall and consistent increase in CO2 emissions have had a negative impact by reducing crop productivity, particularly cereals (26 percent) and oilseed (35 percent). Among various factors, adaptive factors such as cropping intensity, agricultural machinery, and livestock density in combination with sensitivity factors such as average operational land holding size and productivity of cereals, and exposure indicators like Kharif (June-September) temperature, heavy rainfall, and rate of change in maximum and minimum Rabi (October-February) temperature have contributed significantly in increasing crop vulnerability. The agribusiness model needs to be more inclusive. It should pay attention to small and remote farmers, and provide them with inclusive finance that can facilitate the adoption of climate-smart financial innovations, serve the underserved segments, and help them reach the target of a sustainable and inclusive agribusiness model. Though the social, technological, and economic initiatives can enhance the adaptive capacity of farmers, political measures still have a major role to play in providing a healthy climate for agriculture in India through tailored adaptive approaches like the adoption of craft climate adaptation program, dilating the irrigation coverage and location-centric management options. Hence, multidisciplinary and holistic approaches are worth emphasizing for evaluating the future impacts of change in climate on Indian agriculture.

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Impact of climate change on sorghum productivity in India and its adaptation strategies

Cited by 15 publications

References 4 publications

Modeling Climate Warming Impacts on Grain and Forage Sorghum Yields in Argentina

Modeling Climate Warming Impacts on Grain and Forage Sorghum Yields in Argentina

Farmers’ Acuity on Climate Change in the Central Dry Zone of Karnataka

Climate change and vulnerability of agribusiness: Assessment of climate change impact on agricultural productivity

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