Nine soybean varieties representing most of known maturity
groups were evaluated at four planting dates to study the efficiency of
leaf surface. Medium sowing date (15th. May) gave the highest growth
measurements of soybean plants after 110 days from sowing date, i.e.,
plant height, number of branches, leaves and pods/plant, dry weight of
pods, leaves and stems/plant, leaves area per plant and leaf area
.
index, and the highest values for number of branches/plant and plant
height after 54 and 82 days from sowing, respectively.
The results indicated that soybean varieties significantly differed
in growth characters after 54, 82 and 110 days from sowing date.
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