Abstract
Studies were undertaken to evaluate the response of autumn planted sunflower (Helianthus annuus L.) to different levels of N, P and K fertilizers at the Agronomic Research Farm, University of Agriculture, Faisalabad during, 2004 and 2005. Treatments comprised five N levels (0, 60, 90, 120 and 150 kg ha-1), five P levels (0, 30, 60, 90 and 120 kg ha-1), four K levels (0, 60, 90 and 120 kg ha-1) in different combinations and two hybrids viz. FH-314 (standard height) and FH-245 (semi dwarf). Hybrid FH-314 produced significantly higher achene yield (2725.41 kg ha-1) than that of FH-245. There was a progressive increase in achene yield and yield components with increasing levels of N, P and K. The highest achene yield (3023 kg ha-1) and highest net benefit (Rs.19743) was obtained when the crop was fertilized @ 120:90:60 kg NPK ha-1.

Javed Iqbal, Busharat Hussain, Muhammad Farrukh Saleem, Muhammad Azhar Munir, Muhammad Aslam. (2008) Bio-economics of autumn planted sunflower (Helianthus annuus L.) hybrids under different NPK applications, , Volume-45, Issue-3.
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