Deciphering Yield Sustainability of High Yielding Pearl Millet Varieties in Arid Environment

  • Anurag Saxena
  • Praveen-Kumar
  • D. V. Singh
  • N. R. Panwar
  • N. L. Joshi
Short Communication
  • 9 Downloads

Abstract

Pearl-millet yield in arid zone vary from being < 9 to > 4 times of long-term average yield due to variations in rainfall. Thus, it is difficult to assess sustainable yield levels and manure and/or urea needed to sustain them. A long-term field experiment (1993–2013) was conducted and results were statistically inferred for above purpose. 80% variation in annual grain yield could statistically be attributed to rainfall and 10% to manure/urea and even this response was not significant in all the years. 20 kg urea-N significantly increased grain yield in five out of 21 years whereas 5 ton manure + 40 kg urea-N increased it in 17 years. Grain yield of pearl-millet cultivated without any manure/urea-N decreased at the rate of 44.9 kg ha−1 year−1. 20 and 40 kg urea-N ha−1 and 2.5 ton manure retarded this decline however 2.5 tons of manure + 20 kg urea-N, reversed this trend. 5.0 ton manure + 40 kg urea-N ha−1 increased grain yield by 33.3 kg ha−1 year−1 and maximum grain production over 21 years was also recorded in this treatment. 2.5 ton manure + 20 kg urea-N ha−1 was selected to provide highest food security. This is also supported by sustainable yield index.

Keywords

Yield sustainability Long-term experiment High yielding pearl millet varieties Sustainable yield index Arid environment 

Notes

Acknowledgements

The funding was supported by Indian Council of Agricultural Research (CAZRI-T-03-64).

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Copyright information

© The National Academy of Sciences, India 2018

Authors and Affiliations

  1. 1.Division of Integrated Land Use Management and Farming SystemsICAR-Central Arid Zone Research InstituteJodhpurIndia
  2. 2.Division of Natural Resources and EnvironmentICAR-Central Arid Zone Research InstituteJodhpurIndia

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