Asian Journal of Agricultural and Horticultural Research

A field experiment was conducted at MLT site, Madhupur (AEZ-28), Tangail during 2020-21 and 2021-22 to find out an optimum fertilizer dose of turmeric in Madhupur tract and increase productivity and economic return of the farmers. The experiment was laid out in a randomized complete block design with five compact replications. The tested six treatment combinations were  as T₁:  STB as per FRG’ 2018 (116-27-77-8-1.5-1.2 kg NPKSZnB ha^-1 ), T₂ : T₁ + 20% extra NK (139-27-92-8-1.5-1.2 kg NPKSZnB ha^-1), T₃ :T₁ + 20% extra NKS (139-27-92-9.6-1.5-1.2 kg NPKSZnB ha^-1), T₄ :T₁ + 20% extra NKSZn (139-27-92-8-1.8-1.2 kg NPKSZnB ha^-1), T₅ : IPNS basis fertilizer with 5 t ha^-1 cow dung (91-20-66-8-1.5-1.2 kg NPKSZnB ha^-1) and T₆ : Farmers’ practice (115-50-125 kg NPK ha^-1).  BARI Halud-5 was used as test crop in this experiment.  The unit plot size was 8m × 5m and spacing was maintained as 50 cm apart rows with plant to plant 25 cm. Seeds (rhizome) were planted @ 2000 kg ha^-1 during 14-20 April, 2020 and 10-15 April 2021. The treatments showed significant differences in terms of yield and yield contributing characters.  The highest fresh rhizome yield (17.13 t ha^-1) was recorded from IPNS basis fertilizer with 5 t ha^-1 cow dung i.e. (91-20-66-8-1.5-1.2 kg NPKSZnB ha^-1) treatment combination. The highest gross return (Tk.256950 ha^-1) and gross margin (Tk.136740 ha^-1) were recorded from the (T₅) same treatment The marginal benefit cost ratio (3.79) was also highest in IPNS basis fertilizer with 5 t ha^-1 cow dung i.e. (91-20-66-8-1.5-1.2 kg NPKSZnB ha^-1) which further indicated the superiority among the treatments.