Diagnosing sulfur deficiency in field-grown oilseed rape (Brassica napus L.) and wheat ( Triticum aestivum L.)

@article{BlakeKalff2004DiagnosingSD,
  title={Diagnosing sulfur deficiency in field-grown oilseed rape (Brassica napus L.) and wheat ( Triticum aestivum L.)},
  author={M. M. A. Blake-Kalff and Malcolm John Hawkesford and Fang-jie Zhao and Steve P. McGrath},
  journal={Plant and Soil},
  year={2004},
  volume={225},
  pages={95-107}
}
The effects of increasing sulfur applications on field-grown oilseed rape (Brassica napus L.) and wheat (Triticum aestivum L.) were investigated in 1998 and 1999, and the critical values and efficiency of several diagnostic indicators for S deficiency were determined. Critical values for leaf concentrations of total S, sulfate and glutathione changed over time and were not suitable for diagnosing S deficiency early in the growth season. The N:S ratio was more reliable but involved two… 
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DIAGNOSING SULFUR DEFICIENCY IN SPRING RED WHEAT: PLANT ANALYSIS
Sulfur (S) availability indicators are necessary for rational fertilizer use. The goals were to assess the predictive capacity of: i) malate:sulfate ratio in leaf; ii) total nitrogen (N):S ratio in…
Assessment of sulphur deficiency in commercial oilseed rape crops from plant analysis
TLDR
High variation of SO42− concentration in leaves can be interpreted as the result of its mobilization triggered by S deficiency, but cannot be used alone as an indicator of plant S status, according to a comparison with plants grown in controlled conditions under different S supplies.
Assessment of Sulfur Deficiency under Field Conditions by Single Measurements of Sulfur, Chloride and Phosphorus in Mature Leaves
TLDR
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Usefulness of Foliar Nitrogen-Sulfur Ratio in Spring Red Wheat
TLDR
For spring red wheat, N:S ratio in plant is a useful method for S deficiencies diagnostic from the end of tillering to flag leaf and variations tend to decrease as the crop cycle advance.
Sulfur management for rapeseed
Prognosis and diagnosis of sulfur status in maize by plant analysis
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TLDR
This kinetic analysis of S deprivation suggested that a ([Cl(-)]+[NO3 (-]+[PO4 (3-)]):[SO4 (2-)] ratio could provide a relevant indicator of S deficiency, modified nearly as early as the over-expression of genes encoding SO4 ( 2-) tonoplastic or plasmalemmal transporters, with the added advantage that it can be easily quantified under field conditions.
Non-Specific Root Transport of Nutrient Gives Access to an Early Nutritional Indicator: The Case of Sulfate and Molybdate
TLDR
The analysis of the leaf [Mo]:[S] ratio seems to be a practical indicator to detect early S deficiency under field conditions and thus improve S fertilization management.
Influence of sulphur application on hordein composition and malting quality of barley (Hordeum vulgare L.) in northern European growing conditions
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