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

1 Bookmark
 · 
325 Views
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Field experiments were conducted to determine the interactive effect of sulfur (S) and nitrogen (N) applications on seed yield fromPsoralea corylifolia L. Six treatments were tested: T1 = control (without manure and fertilizers), T2 = manure @ 9 kg plot-1 (10 t ha-1), T3 = S0 N20 Ko P40, T4 = S20 N20 K40 P40, T5 = S20+20 N20 K40 P40, and T6 = S20+20 N20+20 K40P40. Activities of nitrate reductase (NR) and ATP-sulfurylase in the leaves were measured at various phenological stages. These two enzymes catalyze the rate-limiting steps in the respective assimilatory pathways for nitrate and sulfate. Enzyme activity was strongly correlated with seed yield, with the greatest performance being achieved with treatment T5. This might be attributed to the optimization of leaf soluble protein and photosynthetic rate, both of which are influenced by S and N assimilation.
    Journal of Plant Biology 05/2007; 50(3):351-357. · 0.99 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Randomized field experiments were conducted to study the interactive effect of sulphur (S) and nitrogen (N) on seed, oil and protein yield of two cultivars of groundnut {Arachis hypogea: cv Amber : cv Kaushal, .} Two dosage levels of sulphur () and two dosage levels of N () in various combinations were tested as micronutrient treatments, . Results indicated significant enhancement of the yield components namely seed and oil yield as well as seed protein. Maximum response was observed with treatment (having 20kg S and 43.5kg N . Increase in seed and oil yields of 90% and 103% in , and 79 and 90% in , respectively were recorded as compared to the control treatment (having 0kg S and 23.5kg N ). Effect of S and N interaction was observed on protein, N and S content in seeds. The results obtained by these experiments clearly suggest that judicious balanced application of N and S could improve the yield.
    Korean Journal of Crop Science. 01/2006; 51(6).
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The aim of this research was to study the effect of sulphur (S) fertilization on oil biosynthesis and its related variables at various stages of seed development, and to find possible explanations for increased oil content in the seeds of mustard (Brassica juncea L. Czern and Coss) due to S fertilization. Acetyl-CoA carboxylase activity and contents of oil, acetyl-CoA, soluble protein, total RNA, total sugar and sulphur were determined in the developing seeds of mustard grown in the field with sulphur (+S) and without sulphur (-S). The period between 10 to 30 days after flowering was observed as the active period of oil accumulation in the developing seeds of mustard. The accumulation of the oil was preceded by a marked rise in acetyl-CoA carboxylase activity and acetyl-CoA concentration, which declined rapidly when oil accumulation reached a plateau. Total sugar content decreased, while protein content increased during the active period of oil accumulation in the developing seeds (i.e. between 10–30 days after flowering). Sulphur fertilization significantly (P < 0.05) enhanced the oil accumulation in the developing seeds at all the growth stages. The increase in the oil content was 5–63% with S fertilization over the control treatment. Acetyl-CoA carboxylase activity and contents of acetyl-CoA, soluble protein, total RNA and sugar were significantly (P < 0.05) higher in the developing seeds of +S-treated plants compared to — S-treated plants. It is suggested that the increase in the oil content with sulphur fertilization may be associated with the increases in acetyl-CoA carboxylase activity through the enhancement of acetyl-CoA concentration. Further, the increased sugar content due to S fertilization provided enough carbon source and energy for oil biosynthesis. Key words Brassica juncea L.-oil-total sugar-soluble protein-sulphur
    03/2010; 13(1):39-46.

Full-text

Download
879 Downloads
Available from
May 30, 2014