Asian Science
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Abstract: The objective of the present study was to quantify the
effects of zeolite application and allophanic soil (KyP and KnP) on leaf
area development, plant height and reproductive morphology of soybean.
One determinate (Enrei [MG] 1V) and indeterminate cultivar (Harosoy [MG]
11) were planted in pots on April 20th at the Faculty of Agriculture,
Ehime University, Matsuyama Japan during 2007. Zeolite levels of 0, 1
and 2 wt.% were used to determine the growth behavior of soybean cultivars
grown on two allophanic (KyP and KnP) and a paddy soil. Zeolite application
and allophanic soil significantly affected leaf area development, plant
height and reproductive morphology of soybean cultivars. Maximum leaf
area and plant height were obtained from 2 wt.% zeolite application and
allophanic soil (KyP and KnP). Minimum number of days to flowering, pod
formation, seed filling duration and physiological maturity were taken
by 1 and 2 wt.% zeolite application in both cultivars. The same trend
was observed in number of days to reproductive development by KyP and
KnP allophanic soil. Enrei took maximum days to all reproductive stages
as compared to Harosoy. Zeolite treated plots and allophanic soil (KyP
and KnP) attained more plant height than control plots grown on paddy
soil without zeolite application. Harosoy produced the tallest plants
than Enrei. Present findings supported the results of experiments by demonstrating
that zeolite application at planting time promotes leaf area, plant height
and encourage the reproductive morphology of soybean cultivars grown on
KyP and KnP allophanic soil.