Effects of urea super granule as a source of nitrogen on the growth andyield of tomato
2004
Talukder, M.A.H. | Mannaf, M.A.,Agricultural Research Station, Rangpur(Bangladesh). On-Farm Research Div.
An experiment was conducted with a view to observe the efficiency of UreaSuper Granule (USG) on tomato. The variety, Ratan was tested in the farmer'sfield at FSRD site, Syedpur, Rangpur under Tista Meander Floodplain highlandsoils (AEZ No. 3) for two consecutive years during Rabi, 2001-02 and 2002-03. Theexperiment was laid out in RCB design with six dispersed replications. Two formsof urea i.e. prilled urea (PU) and USG with different rates were used. The twoyears' results revealed that urea super granule had significant positive effect onthe yield of tomato as compare to normal urea. The recommended dose of N (150kg ha-1) from USG gave the significantly highest marketable fruit yield of 79.13 tha-1 in 1 st and 73.60 t ha-1 in 2nd year. It was also possible to harvestmarketable fruit of 73.69 t ha' in 1st and 68.29 t ha-1 in 2nd year and 68.13 tha-1 in 1st and 62.45 t ha-1 in 2nd year using 90% (135 kg ha-1) and 80% (120kg ha-1) recommended dose of N from USG and these yields were statisticallyidentical to the yield (67.22 t ha-1 in 1st and 60.23 t ha-1 in 2nd year) obtainedfrom 150 kg ha-1 N from prilled urea. The 150 and 135 kg ha-1 of N from USGgave 11 and 2% higher yield of tomato than that of using 150 kg ha-1 N fromprilled urea, respectively. These results implied that efficiency of USG was foundto be positive on the yield of tomato and 20% N might be saved using USGcompare to PU. The economic analysis also showed that the use of urea supergranule was economically viable to cultivate the tomato. Farmers show theirwillingness to use USG.
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