COMPARABLE EFFECT OF PRILLED AND GRANULAR UREA ON BORO RICE CULTIVATION

Abstract

The experiment was conducted at the farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, Bangladesh during the period from December, 2015 to May, 2016 to evaluate the comparable effect of prilled and granular urea on boro rice cultivation. The experiment comprises eight treatments laid out in a Randomized Complete Block Design (RCBD) with three replications. The treatments were; T : 140kg N ha -1 from prilled urea, T 2 : 100 Kg Nha 1 from prilled urea, T :1 USG in between 4 hills , T 4 : 2 USG in between 4 hills, T :1 USG in between 4 hills + 40 kg Nha -1 from prilled urea, T 6 5 : 1 USG in between 4 hills + 60 kg N ha -1 from prilled urea, T 7 : 1 USG in between 4 hills + 80 kg Nha -1 from prilled urea and T : Control (No nitrogen fertilizer). The recommended fertilizer doses used for P, K, S, and Zn were 20, 80, 16 and 2 kg ha -1 , respectively. The N fertilizers were used in two forms namely prilled urea and granular urea or Urea Super Granule (USG). Applications of different forms of N significantly increased the yield components and grain and straw yields of BRRI dhan63. The performance of granular urea was superior to prilled urea. The treatment T (1 USG in between 4 hills) produced the highest grain yield of 6.60 t/ha and straw yield of 7.43t/ha. The lowest grain yield 4.07t/ha and straw yield 4.53t/ha were found in control (T 3 : No nitrogen fertilizer) treatment. The overall results indicate that application of 1urea super granule in between 4 hills can be more efficient and economic for boro rice production. However, further investigation is necessary to make concrete recommendation.

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