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… 
DIAGNOSING SULFUR DEFICIENCY IN SPRING RED WHEAT: PLANT ANALYSIS
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Assessment of sulphur deficiency in commercial oilseed rape crops from plant analysis
TLDR
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TLDR
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Usefulness of Foliar Nitrogen-Sulfur Ratio in Spring Red Wheat
TLDR
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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.
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TLDR
It is argued that high critical values reported previously for prediction of seed yield have been obtained when there was a decline in soil-available S and plants relied on S taken up during early growth.
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Sulphur deficiency has become increasingly widespread in wheat in the U.K. Growth, nutrient content and biochemical responses to S and N supply of a breadmaking wheat variety (Hereward) and a
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TLDR
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TLDR
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