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

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Title Deciphering Yield Sustainability of High Yielding Pearl Millet Varieties in Arid Environment
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Creator Anurag Saxena, Praveen Kumar, D V Singh, N R Panwar and N L Joshi
 
Subject Yield sustainability, Long-term experiment , High yielding pearl millet varieties, Sustainable yield index, Arid environment
 
Description Not Available
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.
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Date 2018-11-13T09:16:04Z
2018-11-13T09:16:04Z
1001-01-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/10860
 
Language English
 
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Publisher Not Available