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Effect of organic and inorganic sources of nitrogen with different irrigation schedules on growth and yield of sunflower (Helianthus annuus)



Effect of organic and inorganic sources of nitrogen with different irrigation schedules on growth and yield of sunflower (Helianthus annuus)



Indian Journal of Agronomy 52(1): 77-79



A field experiment was conducted during 2001 and 2002 to study the combined effect of organic and inorganic sources of nitrogen (N) with different irrigation schedules on growth and yield of sunflower (Helianthus annuus L.). There were three irrigation schedules (IW:CPE ratios 0.6, 0.8 and 1.0) and five N-management practices (the control, recommended dose of N through fertilizer, substitution of 25, 50 and 100 per cent recommended dose of N through FYM). Irrigation schedule at irrigation water (IW): cumulative pan evaporation (CPE) ratio 1.0 significantly improved the growth, yield, N uptake and net returns of sunflower. The supply of entire dose of N through fertilizer gave significantly higher values of all the parameters, which were on a par with those under 75 per cent N through fertilizer + 25 per cent N through FYM. The interaction of IW:CPE ratio 1.0 in combination with supply of entire dose of N through fertilizer resulted in better growth and yield.

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Accession: 015618566

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