Trends in weather and yield changes in past in coconut growing areas in India

Authors

  • S. NARESH KUMAR Central Plantation Crops Research Institute, Kasaragod, 671124, Kerala, India
  • M. S. RAJEEV Central Plantation Crops Research Institute, Kasaragod, 671124, Kerala, India;
  • AND VINAYAN Central Plantation Crops Research Institute, Kasaragod, 671124, Kerala, India
  • D. D. NAGVEKAR CRS, Byte, Ratnagiti, Maharastra
  • R. VENKITASWAMY ARS, Aliyarnagar, Tamil Nadu
  • D. V. RAGHAVA RAO CRS, Ambajipeta, Andhra Pardesh,
  • B. BORAIAH ARS, Arsikeri , Karnataka
  • M. S.GAWANKAR ARS, Mulde, Maharastra, CPCRI-RS, Kidu, Karnataka
  • R. DHANAPAL Central Plantation Crops Research Institute, Kasaragod, 671124, Kerala, India
  • D. V. PATIL ARS, Mulde, Maharastra, CPCRI-RS, Kidu, Karnataka
  • K.V. KASTURI BAI Central Plantation Crops Research Institute, Kasaragod, 671124, Kerala, India

DOI:

https://doi.org/10.54386/jam.v11i1.1216

Keywords:

Climate change, weather, coconut

Abstract

Analysis of past weather data indicated increase in maximum temperature at varied magnitudes over various  coconut growing areas across the country except in southern Kerala. In case of minimum temperature, sixty percent of the locations studied showed a declining trend, widening the difference between maximum and minimum temperatures. The days above 33 oC, optimal for coconut growth and development, were in increasing trend in most of the coconut growing area while days below 15 oC are increasing in northern Kerala, plains of Karnataka and western Tamil Nadu. Annual Rainfall showed declining trend in most of the coconut growing areas with change in amount. Dry spells are in increasing trend in parts of Karnataka and Kerala. Change in coconut productivity during past three decades across the country ranged from -114 to 270 nuts/ha/year. The productivity of coconut during the study period was in increasing trend except for parts of Maharastra, Karnataka and Tamil Nadu, where consecutive droughts affected the yields.

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Published

01-06-2009

How to Cite

S. NARESH KUMAR, M. S. RAJEEV, AND VINAYAN, D. D. NAGVEKAR, R. VENKITASWAMY, D. V. RAGHAVA RAO, B. BORAIAH, M. S.GAWANKAR, R. DHANAPAL, D. V. PATIL, & K.V. KASTURI BAI. (2009). Trends in weather and yield changes in past in coconut growing areas in India. Journal of Agrometeorology, 11(1), 15–18. https://doi.org/10.54386/jam.v11i1.1216

Issue

Vol. 11 No. 1 (2009): June

Section

Research Paper

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