Studies on effects of nitrogen and sulphur on the physiology of sunflower (Helianthus annus L.)

Raghvendera¹, MP Srivastava¹, B Singh¹,   Arun Kumar²

¹Department of Genetics and Plant Breeding, SMM Town PG College, Ballia, UP

²Directorate of Planning and Monitoring, Bihar Agriculture University, Sabore, Bihar

Received: 15 April 2016                    Revised Accepted: 18 June 2016

ABSTRACT

The study was undertaken to assess the performance and efficiency of Nitrogen and Sulphur and their interaction in their respective doses applied through urea and elemental sulphur on sunflower (Hellianthus annuus L.). Full dose of sulphur was given before sowing where as half nitrogen was applied at the time of sowing and next half nitrogen was applied at the age of 40 days after sowing. Besides this, Neem cake@2 q.ha-1 was also applied to check the termites and nematodes in soil. As regards height of plant at 30, 60 and 90 days, T10 (N₁₂₀S₈₀) treatment combination followed by T9 (N₁₂₀S₄₀) have produced tallest plants and  increase in  doses of N and S have significantly accelerated the total biomass and yield.

Key Words: Edible Oil, Nitrogen, Sulphur, Sunflower