Article

Effect of sulphur and nitrogen application on growth characteristics, seed and oil yield of soybean cultivars

Korean Journal of Crop Science 01/2005; 50(5):340-345.

ABSTRACT A field experiment was conducted to assess
the growth characteristics, seed and oil yield of two cultivars
of soybean (G. max (L.) Merr.) cv. PK-416 (V
1) and cv.
PK-1024 (V
2) in relation to sulphur and nitrogen nutrition.
Six combinations (T
1-T6) of two levels of sulphur (0
and 40 kg ha-1) and two levels of nitrogen (23.5 and 43.5 kg
ha-1) were applied to the two soybean cultivars as nutrients.
Results indicated significant effect of sulphur and
nitrogen, when applied together, on the growth characteristics,
yield components, and seed and oil yield. Maximum
response was observed with treatment T
6 (having 40 kg S
and 43.5 kg N ha-1). Seed and Oil yields were increased 90
and 102% in V
1, and 104 and 123% in V2, respectively as
compared to the control i.e. T
1 (having 0 kg S and 23.5 kg
N ha -1). Positive responses of S and N interaction on leaf
area index, leaf area duration, crop growth rate and biomass
production were also observed. The results obtained in
these experiments clearly suggest that balanced and judicious
application of nitrogen and sulphur can improve
both seed and oil yield of soybean cultivars by enhancing
their growth

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