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Winter sorghum (Sorghum bicolor) productivity as influenced by tillage practices and nitrogen management in Vertisols of SAT, India

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Title Winter sorghum (Sorghum bicolor) productivity as influenced by tillage practices and nitrogen management in Vertisols of SAT, India
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Creator S.L. Patil
 
Subject : Conventional tillage Nitrogen management Reduced tillage Sorghum Water use efficiency
 
Description Not Available
Sustainable food production in semi-arid tropical countries can be achieved through efficient
conservation and utilization of rainwater and nutrient management. A field experiment was conducted
to assess the effect of tillage practices and integrated nitrogen management on soil water conservation,
water use efficiency and sorghum production during winter seasons of 2000–2001, 2001–2002 and
2002–2003 at the Research Farm of Central Soil and Water Conservation Research and Training Institute,
Research Centre, Bellary (158090N latitude, and 768510E longitude), India. Experiment was laid out in a
split plot design with tillage practices as main treatments and nitrogen management through organic
materials alone (OMA), inorganic material, urea alone (UA) and blending of 50% each of organic and
inorganic materials (INMs) as sub treatments. Winter sorghum grain yield of 2020 kg ha–1, during study
period was higher by 6% with reduced tillage (RT1), when tillage operations were reduced to 2
harrowing + 1 hoeing + 1 hand weeding, and grain yield increased further to 2151 kg ha–1 and was
higher by 13% with conventional tillage, CT (1 ploughing + 2 harrowing + 2 hoeing + 1 hand weeding)
compared to lower grain yield of 1905 kg ha–1 produced under reduced tillage RT2 (1 harrowing + 1
hoeing + weedicide application). Mean water use efficiency (WUE) was 8.98 kg ha–1 mm–1 with CT
compared to 8.48 kg ha–1 mm–1 produced with RT2. Among the integrated nitrogen management (INM)
practices, sorghum grain yield of 2063 kg ha–1 was higher by 9% with application of 50% N through
organic materials and 50% N through urea and when N was supplied through urea alone, sorghum grain
yield increased further to 2120 kg ha–1 and was higher by 12% compared to 1892 kg ha–1 produced with
supplying N through organic materials alone. Mean WUE of 8.84 kg ha–1 mm–1 and 9.40 kg ha–1 mm–1
were 11% and 18% higher with INM and UA, respectively compared to 7.97 kg ha–1 mm–1 with OMA. In
pooled data, higher grain yield of 2244 kg ha–1, straw yield of 3.81 t ha–1 and WUE of 9.44 kg ha–1 mm–1
were recorded under CT and UA and were attributed to higher availability and uptake of soil water and
nutrients, as a result of higher dry matter production in leaves and stem and its translocation to head at
physiological maturity.
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Date 2020-03-05T08:45:15Z
2020-03-05T08:45:15Z
2012-07-29
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/33609
 
Language English
 
Relation Not Available;
 
Publisher Not Available