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Precising nitrogen requirement of table potato (Solanum tuberosum) cultivars for different growth periods

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Title Precising nitrogen requirement of table potato (Solanum tuberosum) cultivars for different growth periods
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Creator PARVEEN KUMAR, S.P. TREHAN1, B.P. SINGH, S. RAWAL AND M.A. KHAN
 
Subject Growth period, Nitrogen-use efficiency, Potato, Tuber yield, N uptake
 
Description Not Available
A field experiment was conducted for 3 consecutive seasons (2004–2007) at Modipuram to optimize the growth period-specific N requirements of table potato cultivars ‘Kufri Pukhraj’ and ‘Kufri Anand’ in sandy loam soils. Growth, yield and economic parameters of both the genotypes were evaluated for their response to 4 N levels (0, 90, 180 and 270 kg/ha) and 2 growth periods (75 and 110 days). The crop-growth traits and tuber number were not influenced due to harvest stages; however, tuber yield was 31.3% higher with extended duration (110 days). N application had favourable effect on growth parameters, but showed quadratic response to marketable and total tuber number/ha. Likewise, it showed steady increase in marketable and total tuber yields. Agronomic N-use efficiency (118.6–66.0 kg tubers/kg N applied) decreased linearly with increase in N levels. ‘Kufri Anand’ recorded better growth than ‘Kufri Pukhraj’, but tuber number and yield as well as economic variables were statistically similar in both the cultivars. Net income and benefit : cost (B: C) ratio indicated that both the cultivars should be fertilized with 270 kg N/ha when harvested at 110 days, but 180 kg N/ha is sufficient when harvested at 75 days.
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Date 2019-12-09T03:47:03Z
2019-12-09T03:47:03Z
2008-12-31
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/28794
 
Language English
 
Relation Not Available;
 
Publisher Indian Society of Agronomy