NITROGEN FERTILIZATION AND NARROW PLANT SPACING STIMULATES SUNFLOWER PRODUCTIVITY

Authors : Muhammad AWAIS, Aftab WAJID, Ashfaq AHMAD, Muhammad SALEEM, Muhammad BASHIR, Umer SAEED, Jamshad HUSSAIN, MHabib HabiburRAHMAN

Pages : 99-108

Doi:10.17557/.17374

View : 25 | Download : 11

Publication Date : 2015-05-18

Article Type : Research Paper

Abstract :Plant population exerts a strong influence on growth and seed yield because of its competitive effect both on  the vegetative and reproductive development. For evaluating the effect of different plant populations insert ignore into journalissuearticles values(83,333,  66,666 and 55,555 plants ha-1 ); and N rates insert ignore into journalissuearticles values(90, 120 and 150 kg N ha-1 ); on sunflower hybrid insert ignore into journalissuearticles values(Hysun-33); a field  experiment was conducted during spring seasons of 2012 and 2013 using split plot design with three  replications at Agronomic Research Area, University of Agriculture, Faisalabad. Results revealed that each N  increment enhances the total dry matter, achene yield and its components while oil contents were undesirably  affected. During both years, total dry matter, achene yield and harvest index were detected from 83, 333 plants  ha-1 . Contradictorily, yield components insert ignore into journalissuearticles values(head diameter, number of achenes per head and 1000-achene weight);  were highest in 55,555 plants ha-1  treatment. Application of 150 kg N ha-1  in 83,333 plants ha-1  plant  population was best treatment to attain maximum achene yield.
Keywords : correlation, nitrogen, plant population, regression, achene, sunflower, yield