Abstract
The experiment was conducted at the
Agronomy Farm of Sher-e-Bangla Agricultural University, Dhaka during
November 2017 to April 2018 to examine the varietal performances of
white maize as influenced by different level of herbicides. The
experiment comprised two varieties viz. PSC-121 and Yangnuo-3000
designed as V1 and V2 respectively combined with six weed control
measures viz. T0 = No weeding, T1= Carfentrazone + Isoproturon 500g @
1.5 g ha-1 (Affinity 50.75% WP), T2= Carfentrazone + Isoproturon 500g
@ 2.0 g ha-1 (Affinity 50.75% WP), T3= Pendimethalin @ 2.0 l ha-1
(Panida 50EC), T4= Pendimethalin @ 3.0 l ha-1 (Panida 50EC) and T5=
One hand weeding at 45 DAS. The experiment was laid out in split plot
design with three replications. The highest plant height, leaf area
index, crop growth rate, leaf area duration, 100-seed weight (35.67
g), grains cob-1 (426.5), grain yield (8.817 t ha-1), stover yield
(7.35 t ha-1) and biological yield (16.17 t ha-1), WCE (74.24%), the
lowest weed density (85.92 no. m-2) and biomass (95.056 g m-2) were
achieved from T4. On the other hand, all the parameters studied were
found lowest with T0. In case of variety, PSC-121 showed the superior
performance in terms of weed density, weed biomass, weed control
efficiency, plant height, leaf area index, crop growth rate, leaf
area duration, 100-seed weight (33.89 g), number of grains cob-1
(412.0), grain yield (7.75 t ha-1), stover yield (6.12 t ha-1) and
biological yield (13.87 t ha-1) over YANGNUO-3000. However, in terms
of interaction of weed control measures and variety T4V1 showed the
superior findings regarding weed density, weed biomass, weed control
efficiency, plant height, leaf area index, leaf area duration and
crop growth rate. This combination treatment also showed the highest
values in 100-seed weight (40.33 g), number of grains cob-1 (445.6),
grain yield (9.63 t ha-1) and biological yield (16.72 t ha-1)
although in some instances these values were not significantly higher
than T4V2. The lowest performances in respect of all the parameters
studied were recorded from T0V2 which was in some cases was
statistically at par when compared with T0V1.
Keywords: White maize, Weed,
Herbicides, Hand weeding.
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