Author (s): A.K.M.M.Rahman1, M.S.A. Khan2, F. Ahmed2, A. J. Mridha4 and N.U.Mahmud3


An experiment was undertaken at the farm of central Research Station of Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur during the rabi season of 2007-08 and 2008-09 to evaluate the genotypic variation of hybrid maize in growth, nutrient uptake and yield. Four hybrid maize varieties i.e. BARI hybrid maize-5, BARI hybrid maize-3, Pacific 984 and Pacific 11 were evaluated in the present study. Varieties showed great influence on total dry matter production (TDM), leaf area index (LAI), light transmission ratio (LTR), crop growth rate (CGR), grain yield and nutrient uptake. The CGR increased progressively with time and reached the peak at 40 - 60 days after sowing (DAS) and thereafter declined till maturity. Among the varieties the CGR of BARI hybrid maize-5 was higher than others at vegetative stage (60 DAS), thereafter it was higher in Pacific 984. CGR of Pacific 984 was slower than other varieties at the early stage but it regained later. Higher LAI with lower LTR values indicated the higher light interception in Pacific 984 and BARI hybrid maize-5 which reflected the higher TDM production in those varieties. Higher nutrient uptake by Pacific 984 and BARI hybrid maize-5 contributed to their higher LAI, CGR and TDM; and ultimately they produced higher grain yield than other varieties.

J. Expt. Biosci.1(1):1-6, January 2010

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1 Scientific Officer, 2Senior Scientific Officer, Agronomy Division, 3Scientific Officer, Soil Science Division, Bangladesh Agricultural Research Institute, Gazipur-1701, 4 Agronomy Division, BRRI, Gazipur
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