An experiment was conducted at farmer’s field of the MLT site, Goneshpur, Shibgang, Bogura during 201415 in medium highland of AEZ-3 to observe the efficiency of USG application on banana production in comparisons to application of prilled urea. There were four treatments viz. T1 = Recommended (100%) does of N as prilled urea, T2=Recommended (100%) does of N as urea super granules (USG), T3 = 10% less than recommended dose of USG and T4 = 20% less than recommended dose of USG. The highest yield (73.70 t/ha) was obtained from recommended dose of N as USG which was statistically similar with other treatments. The higher gross return, net return and BCR were obtained from the USG treatments, even 20% less USG showed higher BCR than 100% prilled urea.
Key words: USG, nitrogen, banana, yield.
Banana (Musa sapientum L.) is a leading tropical fruit in the world market with highly organized and developed industry (Anonymous, 1999). It is easily digestible and riches with carbohydrate and minerals (Bhan, 1977). For desired banana yield nutrients especially nitrogen is the most deficit nutrient element in Bangladesh soil. In general, farmers traditionally apply nitrogenous fertilizer to their crops for better yield. It is said that Urea super granule (USG) is more efficient than that of prilled urea. USG minimizes N leaching, volatilization, gaseous and surface run off loss to a greater extent. About 20-30% nitrogen could be saved by using USG compared to prilled urea. In Bangladesh first USG/IBDU works on rice was conducted by Sattar in 1973-75 under BAU and Hawaii University USAID project and the results were presented by Prof. Bhuiya in 1974 and Prof. Idris in 1977 at Hawaii University, USA. Crass well and De Datta (1980) reported that broadcast application of urea on the surface soil causes loss up to 50% but USG