El Nino/La Nina impact on crop production over different agro-climatic zones of Indo-Gangetic Plain of India

Bhatla, R.; Varma, P.U.; Verma, Shruti; Ghosh, Soumik

doi:10.1007/s00704-020-03284-3

Cited by 20 publications

(11 citation statements)

References 20 publications

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“…Except for the summer season, the number of years with more than seasonal mean discharge is lesser than the number of years with less than seasonal mean discharge is higher in the Sagar catchment. The seasonal rainfall analysis of the present study can be helpful in assessing food grain yields in the future as the variations in monsoon season rainfall have a direct impact on total food grain yield (31,32) . The increases or decreases in rainfall are usually accompanied by an increase or decrease in food grain yield.…”

Section: Seasonal Dischargementioning

confidence: 96%

Assessment of Impacts of Climate Change on Varied River-Flow Regimes of Peninsular India

Veerabhadrannavar¹,

Venkatesh²

2022

IJST

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Objectives: Precipitation is a major component of the hydrological cycle. Precipitation varies in intensity throughout time and space. The discharge at the outlet of the catchment is directly proportional to the precipitation received in the catchment. The current research looks at the precipitation as well as discharge patterns in the Sagar and Kokkarne catchments in the Western Ghats of Karnataka, India. Methods: In the present research, the soil water assessment tool (SWAT) has been applied to monitor and quantify the streamflow of the Sagar and Kokkarne catchments. Precipitation and discharge analysis for the period of 2021-2050 for both of the catchments is carried out. The seasonal and yearly discharge patterns of the catchments were studied using the Coordinated Regional Downscaling Experiment-South Asia data for the RCP 4.5 scenario for the period 2021-2050. Findings: During the Southwest monsoon and Northeast Monsoon, about 81.44 % and 14.22 % of the precipitation in Sagar catchment and about 87.34 % and 6.93 % of the precipitation in Kokkarne catchment were obtained respectively. The contribution of the Southwest Monsoon in both the catchment is greatest, followed by the Northeast monsoon. During the period 2021-2050, less than 80 % probability of discharge is expected for 23 years and more than 20 % probability of discharge is expected for 4 years. The maximum discharge expected in Sagar and Kokkarne catchments are 16.96 m 3 /sec and 213.87 m 3 /sec respectively. Novelty: The patterns of the precipitation and discharge of two different catchments on each side of the Western Ghats of Karnataka are compared in the current study to understand the impact of climate change on catchment hydrology in these regions.

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Section: Seasonal Dischargementioning

confidence: 96%

Assessment of Impacts of Climate Change on Varied River-Flow Regimes of Peninsular India

Veerabhadrannavar¹,

Venkatesh²

2022

IJST

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“…Berbeda dengan Kecamatan Mlandingan, produktivitas jagung terendah di Kecamatan Situbondo justru terjadi pada tahun 2015 ketika nilai SPI dalam kategori agak basah, sedangkan produktivitas tertinggi tercatat pada tahun 2012 ketika nilai SPI dalam kategori normal. Rendahnya produksi dan produktivitas suatu tanaman dapat dipengaruhi oleh perubahan kultivar, agrokimia wilayah, curah hujan dan kelembaban tanah (Bhatla et al, 2020). Peristiwa El-Nino dan La-Nina tidak hanya mempengaruhi produktivitas tanaman padi, namun juga tanaman jagung.…”

Section: Tanaman Jagungunclassified

“…Produktivitas tanaman tidak selalu dipengaruhi fenomena La-Nina dan El-Nino. Berdasarkan penelitian yang dilakukan di Dataran Indo-Gangga India menunjukkan bahwa fenomena El-Nino justru mempengaruhi penurunan produksi jagung diwilayah tersebut (Bhatla et al, 2020).…”

Section: Tanaman Jagungunclassified

Analisis Indeks Kekeringan Metode Standardized Precipitation Index (Spi) Dan Pengaruhnya Terhadap Produktivitas Padi Dan Jagung

Masruroh

Bowo

2022

JTSL

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Drought is one of the most significant impacts of the climate on agriculture, especially food crops. Standardized Precipitation Index (SPI) is an Index for droughts. The research objective was to study the relationship of SPI values to the productivity of rice and corn crops in the Situbondo district. The result showed that the value of the SPI time scale at three months is the most appropriate for the observed productivity of rice and corn. The SPI value significantly correlated with the productivity of rice plants in the Jatibanteng and Arjasa districts but did not significantly affect the productivity of corn in the Mlandingan and Situbondo districts. Furthermore, the El-Nino phenomenon reduced the rice productivity up to 3.9% and the corn productivity up to 48.1%. The La-Nina phenomenon reduced rice productivity up to 26.0% but increased the productivity of corn up to 81.7%.

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“…Despite geographic and cultural similarities in the Indian IGP, important differences exist between the West, central, and East area in terms of agro-ecological gradients of climate [5] and soil [6], as well as in socioeconomic features such as rural livelihoods [7]. As a consequence of a lower access to relevant inputs such as irrigation and fertilizers, these differences translate into a higher wheat and rice yield gap and food insecurity over the Eastern IGP [7,8].…”

Section: Introductionmentioning

confidence: 99%

Planting <em>Aman</em> Rice at Monsoon Onset Could Mitigate the Impact of Temperature Stress on Rice-Wheat Systems of Bihar, India

Montes¹,

Urfels²,

Han³

et al. 2022

Preprint

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The rice-wheat rotation is the dominant cropping system in Bihar, where food security of the rural population depends heavily on the production of rice and wheat. In Bihar, climatic shocks induced by low temperatures and terminal heat stress can significantly affect rice and wheat yields. The present work evaluates the benefit of using the monsoon onset as the date for planting rice in reducing thermal stress on rice-wheat systems. High-resolution gridded crop simulations using the APSIM model were performed to simulate potential yields of rice and wheat using the monsoon onset and the farmers’ practice as planting dates. The monsoon onset was calculated using an agronomic definition and farmers’ practice dates were estimated using satellite data. Model outputs were analyzed in terms of planting dates, yields, and the incidence of low temperature stress on rice and high temperature stress on wheat by means of the APSIM yields limiting factors. The results show that the rice planting and harvest dates using the monsoon onset are in general 20-30 days earlier, decreasing the incidence of thermal stress in rice and wheat, and generating higher and more stable yields. These results can help design mitigation strategies for the impacts of climate shocks induced by low and high temperature events in the context of the advances in sub-seasonal and seasonal forecasting, targeting climate services for farmers in Bihar.

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El Nino/La Nina impact on crop production over different agro-climatic zones of Indo-Gangetic Plain of India

Cited by 20 publications

References 20 publications

Assessment of Impacts of Climate Change on Varied River-Flow Regimes of Peninsular India

Assessment of Impacts of Climate Change on Varied River-Flow Regimes of Peninsular India

Analisis Indeks Kekeringan Metode Standardized Precipitation Index (Spi) Dan Pengaruhnya Terhadap Produktivitas Padi Dan Jagung

Planting <em>Aman</em> Rice at Monsoon Onset Could Mitigate the Impact of Temperature Stress on Rice-Wheat Systems of Bihar, India

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