• Impact of monsoon rainfall on the total food grain yield over India

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jess/123/05/1129-1145

    • Keywords

       

      All India rainfall; all India foodgrain production; active/break cycle; soil moisture; Kharif and Rabi crop yields; southwest and northeast monsoons.

    • Abstract

       

      The study focuses on understanding the variations of precipitation during summer monsoon season and its impact on Kharif and Rabi foodgrain yield over India. Total foodgrain yield over India during Kharif (summer) season is directly affected by variations in the summer monsoon precipitation (June–September). An increase (decrease) in rainfall is generally associated with an increase (decrease) in foodgrain yield. A similar correspondence during the Rabi (winter) foodgrain yield is not evident. The Rabi crop is not directly affected by variations in the post-monsoon precipitation (October–December) alone, also the summer season precipitation influences the Rabi crop through water and soil moisture availability over many parts of India. Though the reduction of rainfall activity during the entire summer monsoon season leads to reduction in crop yields, the occurrence of prolonged rainfall breaks also causes adverse effect on the crop growth resulting in reduced crop yields.

    • Author Affiliations

       

      V Prasanna1

      1. Climate Research Department, APEC Climate Center, Busan, South Korea.
    • Dates

       
  • Journal of Earth System Science | News

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