Influence of different fertilizer rates on the growth and yield of transplanted aman rice genotypes

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Research Paper 01/07/2016
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Influence of different fertilizer rates on the growth and yield of transplanted aman rice genotypes

A. Ahmed, M. A. Kabir, M. M. Rashid, M. S. Islam, P. S. Saha
Int. J. Agron. Agri. Res.9( 1), 47-54, July 2016.
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The field experiment was conducted at the BRAC Agricultural Research and Development Centre, Gazipur from June to October, 2012 to investigate the effect of different fertilizer rates on the growth and yield of transplanted aman rice genotypes. The experiment was carried out in split-plot design with three replications accommodating the genotypes (G1= CNI 9012, G2= GSR IRRI I 2, G3= BINA dhan7 and G4= Aloran) in sub plot and different fertilizer rates (F1= No fertilizer, F2= Half of recommendation rate, F3= Two third of recommendation rate and F4= Recommendation rate) in the main plot. Crop growth duration, plant height, tillers no. hill-1, panicle no. hill-1, panicle length, total grains panicle-1, fertility%, 1000 grain-wt. and grain yield were compared for different treatments. Genotypes showed significant results for all the traits except grain yield but fertilizer and their interaction exhibit insignificant results for most of the characters studied. The maximum mean for producing grain yield was observed in F2 (5.0 t ha-1) but the minimum in F1 (4.6 t ha-1). Therefore, application of no fertilizer had negative impact on grain yield. Apparently, the highest value for grain yield (5.2 t ha-1) was found in the combinations of G1 × F3, G3 × F2 and G4 × F2 as well as the lowest (4.2 t ha-1) from G1 × F1 combination. Maximum gross return (62500 Tk. ha-1) and gross margin (58255 Tk. ha-1) with F2 suggested that this fertilizer rate was best for profitable cultivation on tested transplanted aman rice genotypes.


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