Impact of nitrogen and potash on growth, flower and seed yield of African marigold (Tagetes erecta)
2014
Zaman, F.
Marigold is an important flowering crop that is grown worldwide for its beauty and landscape industry. Present study was carried out to check the impact of nitrogen and potash on growth, flower and seed yield of African Marigold (Tagetes erecta) under conditions of Faisalabad. Treatments comprised five different levels of nitrogen and potash with constant level of phosphorus i.e. Control, 10-10-10 NPK g/m2, 10-10-15 NPK g/m2, 15-10-10 NPK g/m2 and 15-10-15 NPK g/m2. Experiment was laid out according to Randomized Complete Block Design (RCBD) with five treatments which were replicated thrice. Plant height (114.06 cm), leaf area (30.53 cm2), number of lateral branches (19.22) and sub-lateral branches (15.77) performed well under 15-10-10 NPK g/m2 Days to flower appearance responded inversely to increasing doses of nitrogen and potash as 15-10-10 NPK g/m2 took 59.22 days to flower while control treatment took least days to flower appearance (45.44 days). Seed weight per plant, 1000 seed weight of lateral flowers, seed yield of flower on lateral branches and seed yield of flower on sub-lateral branches were highest at 15-10-10 NPK g/m2 1000 seed weight of sub-lateral flowers, seed yield of flower on main shoot and seed weight per plant were maximum at 15-10-15 NPK g/m2 Seed germination (90.33 %) and seedling length were maximum at 15-10-10 NPK g/m2 while increasing level of nitrogen and potash showed no major effect on fresh and dry weight of seedlings.
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