| dc.description.abstract | In order to evaluate drought stress effects on yield and yield components of five maize
genotypes, an experiment was conducted from October 2015 to April 2016 in the Agronomy
research farm (25.560
N latitude and 88.410
E longitude) of Hajee Mohammad Danish Science
and Technology University, Dinajpur-5200. The experiment was designed at RCBD with three
replications. Three irrigation levels namely, control (zero irrigation) (I1), one Irrigation (I2) and
two Irrigation (I3) were used for experiment. BARI Hybrid Maize (M-7), Hybrid Maize PAC339, Hybrid Maize PS-999, Krishibid Hybrid Maize KS-505, Krishibid Hybrid Maize PS-102
were also used for this experiment. Condition represented the effects of irrigation treatment was
significant on plant height, cob weight, cob length, grains per cob, 100-grain weight, grain, straw
and biological yield and harvest index. Control treatment (zero irrigation) resulted the minimum
of all mentioned factors. The highest plant height 226.95 cm was obtained from I3 while the
lowest 161.90 cm was found at I1. The maximum cob weight of 219.55 g was obtained from I3
while the minimum cob weight of 150.67 g was found at I1. The maximum grain per cob was
received from I3 345.62 and the minimum was found from I1 228.87. There was statistical
significance in 100 grain weight among the treatments. The highest 100-grain weight (42.98 g)
was found at I3 while the lowest 37.88 g was given by I1. Irrigation played positive role in
increasing straw yield of maize; Treatment I3 produced the maximum straw yield of 7.38 t ha-1
while treatment I1 produced the minimum 4.87 t ha-1. Significant variation was also observed in
the biological yield of maize under the influence of irrigation treatments. The highest biological
yield (14.54 t ha-1 ) was obtained at I3 and the lowest biological yield 9.58 t ha-1 was obtained at
I1. Irrigation treatments had also considerable effect on grain yield. Treatment I3 produced the
highest grain yield (7.023 t ha-1) while I1 produced the lowest 4.719 t ha-1. Effect of varieties
was significant on cob weight, cob length, and grain per cob, 100 grain weight, and biological
yield. Krishibid Hybrid Maize KS-505 was significantly higher performance in all of the
parameters of hybrid maize varieties. Interaction of irrigation and cultivar was significant on cob
weight, cob length, and grains per cob, 100-grain weight, straw, grain and biological yield. On
the basis of dissimilarities the results obtained, the I3 treatment and Krishibid Hybrid Maize KS505might be suitable for maize productive under the condition similar to the present study | en_US |
