Impact of climate change on the potential geographical suitability of cassava and sweet potato vs. rice and potato in India

Pushpalatha, Raji; Rajan, Shiny; Byju, G.

doi:10.1007/s00704-021-03763-1

Cited by 8 publications

(8 citation statements)

References 23 publications

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“…Thus Fig. 2 indicates its excellent suitability in predicting the geographical distribution of the tested species for future scenarios (Pushpalatha et al, 2021).…”

Section: Validation Of Model Outputmentioning

confidence: 83%

“…The number of districts in India which will be highly affected by rice thrip for SSPs 345 and 585 are 418 and 435 respectively. Pushpalatha et al (2021) presented the highly suitable locations for rice in India for near and far future for SSPs 345 and 585. Their outcome indicates the highly suitable locations for rice crop lies in the northeast and southern parts of India.…”

Section: Geographical Distribution Of Rice Thrip In 2050mentioning

confidence: 99%

“…As reported in Aidoo et al ( 2022), this study used the linear, quadratic, product, threshold, and hinge feature sets together with a value of 1 as the regularization multiplier. The input requirement of MaxEnt includes raster layer of climate data and current occurrence/presence point data of species (Pushpalatha et al, 2021). The model performance is evaluated using the AUC (Area Under the receiver operating characteristic, ROC curve) value, with 0.…”

Section: Maxent Model Evaluation and Validationmentioning

confidence: 99%

“…The probable locations which will be highly affected by rice thrip in southern and northeastern regions are also the major rice growing locations in India, and hence it can have severe impact on rice production and food security. The future geographical suitability of rice in India also indicates the regions in northeast and southern states will be highly suitable for its growth (Pushpalatha et al, 2021). A total of 391 districts will be highly affected (locations where the predicted probability by the model is greater than 0.8, see Fig.…”

Section: Geographical Distribution Of Rice Thrip In 2050mentioning

confidence: 99%

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Potential distribution of Rice Thrip (S.biformis) in India under climate change

Pushpalatha,

Gangadharan,

Roshni

et al. 2023

Preprint

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India’s economy is agro-based economy and in which rice is the major crop grown in the country. India is also one among the global leaders in the production of rice and is accounted for approximately 10% of nation’s economy. Present and future changes in the climate may challenge the crop production as the pest pressure in agriculture varies significantly with the elevated temperatures. The rice thrip (S.biformis) is the most challenging pest of rice and often causes yield reduction and significant economic loss. The climate change leads to variations in meteorological parameters, and it apparently affects the developmental rates and population dynamics of rice thrip. Monitoring its geographical distribution based on the climatic conditions can minimize crop yield losses. Therefore, the present study focused to quantify the temperature changes and eventually the population dynamics of rice thrip in India using projections from Hadgem3-GC31 and MPI-ESMI-2 under three emission scenarios (SSP126, SSP245 and SSP585) for the year 2050. The probability distribution from the MaxEnt species distribution model indicates the southern and north-eastern regions of India will be highly affected by rice thrip in 2050, and a total of 391 districts will be highly affected (locations where the predicted probability by the model is greater than 0.8) for the SSP126. The number of districts which will be highly affected by rice thrip for SSP245 and SSP585 are 418 and 435 respectively. The analysis shows that the most influencing climatic parameter for the geographical distribution of rice thrip is Tmax (quadratic relation) followed by bioclimatic variable and Tmin (positive relation). This suggests the regions with possibility to increase the maximum temperature will be highly suitable for its growth and distribution. Quantifying the dynamic population of rice thrip under climate change can facilitate and strategize integrated pest management practices to a sustainable food production by minimizing the risks.

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“…Thus Fig. 2 indicates its excellent suitability in predicting the geographical distribution of the tested species for future scenarios (Pushpalatha et al, 2021).…”

Section: Validation Of Model Outputmentioning

confidence: 83%

Section: Geographical Distribution Of Rice Thrip In 2050mentioning

confidence: 99%

Section: Maxent Model Evaluation and Validationmentioning

confidence: 99%

Section: Geographical Distribution Of Rice Thrip In 2050mentioning

confidence: 99%

See 2 more Smart Citations

Potential distribution of Rice Thrip (S.biformis) in India under climate change

Pushpalatha,

Gangadharan,

Roshni

et al. 2023

Preprint

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“…They indicated that the current cropgrowing regions would remain suitable for them, and more areas would also become ideal for sweet potato. They expect a shift in the location of 30.10 Â 10 3 ha for sweet potato in Asia Pushpalatha, Shiny, and Byju (2021). quantified the district-wise future climate suitability of sweet potato in India using the nich-model MaxEnt (Maximum Entropy model), and results showed a percentage increase in the aerial suitability of this crop with values of32, 25; 27, 31; and 23, 21, respectively for the two SSPs (4.5 and 8.5) for 2030, 2050, and 2070.…”

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confidence: 99%

Climate resilience, yield and geographical suitability of sweet potato under the changing climate: A review

Pushpalatha

Byju

2023

Natural Resources Forum

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Sweet potato is one of the important tropical tuber crops across the world. This review analyzes the studies on the climate resilience of sweet potato to various environmental parameters, the impact of climate change on its yield, and geographical suitability to exploit more about this crop and find out the knowledge gap in its existing research. Drought tolerance studies indicate the suitability of sweet potato in drought‐prone areas in terms of their survival rate, and their leaves can tolerate up to a wilting point of −1.3 MPa. The optimum night and daytime temperatures for sweet potato are 18°C and 28°C. There are 82 crop varieties available globally with heat‐stress tolerance without compromising the yield. The elevated atmospheric CO2 enhanced the growth and yield of sweet potato and increased the water use efficiency. The salinity tolerance of sweet potato is observed as 11 dS m−1, and it is superior to other major food crops. Sweet potato's ozone tolerance is higher than other crops (59 ppb). The impact studies on crop yield and geographical suitability also recommend its superiority to other major food crops with similar crop duration. As an outcome of this study, further research is needed to explore this crop as sweet potato can substitute for major food grain crops in developing countries regarding food, feed, medicine, and fuel. Research on value‐added products and their marketing is another area that needs immediate attention. Studies must exploit sweet potato leaves to ensure nutritional security in developing countries. The researchers also need to focus on developing climate‐resilient varieties to ensure a continuous supply of planting materials to needy people to ensure food security. This review also demands more studies on the modeling of sweet potato worldwide to issue crop yield forecasts and monitor the spatial distribution of its major pests worldwide.

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