Interactive effects of rice bran compost and chemical fertilizers on macronutrients, oil and protein content in sunflower (Helianthus annuus L.)

A field experiment was conducted at the research farm of Charfasson Govt. College, Bhola, Bangladesh in rabi season 2015-2016 to evaluate impact conjunctive use chemical fertilizers with rice bran on concentration, uptake and seed quality sunflower cv. BARI-2 (Keroni-2). The laid out randomized complete block design (RCBD) having sixteen treatments three replications. size plots were 3 m x 2 m. Treatments T1 Control (- RB -NPK), T2: 2.5 t ha-1, T3: 5.0 ha-1,T4: 7.5 T5: N40P30K50 kg ha-1,T6: N80P60K100 T7: N120P90K150 T8: ha-1 + T9: T10: T11: T12: T13: T14: T15: T16: ha-1. Results showed that seeds (oil protein) crop increased increasing rate amendments significantly (P<0.05) over control variation between also significant irrespective sources most cases. Generally, combination better performance than their individual application. Maximum values NPKS concentration (%) different organs 1.22, 0.35, 1.90, 0.18 for stem; 1.17, 2.41, 0.16 root; 3.98, 0.43, 4.28, 0.24 leaf, 1.04, 0.65, 3.00, 0.22 petiole; 2.16, 0.58, 2.21, 0.26 inflorescence 5.24, 0.83, 1.60, 0.47 measured However, pattern followed same trend as highest found those Significantly (P<0.05%) content oil (51.1%) treatment protein (33.9%) +N80P60K100 Their lowest protein, which lower treatment. overall findings this study indicated could be applied achieve organs, sunflower.
 Int. J. Agril. Res. Innov. Tech. 10(2): 91-99, December 2020