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Sulfur

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  2. Crop Nutrients
  3. Secondary Nutrients
  4. Sulfur

Nutrient Benefits

Antagonism

High S levels can reduce the availability of:

  • Molybdenum (in the absence of Phosphorus)
  • Selenium

Stimulation

  • Phosphorus uptake

Functions

  • Similar requirements to P
  • Constituent of several amino acids which are essential for protein production
  • Aids in activities of some enzymes and vitamins
  • Needed for chlorophyll formation
  • Deficiency adversely affects the oil content in some oil crops and the baking quality in wheat crops
  • Aids in N stabilization
  • Needed for nodule formation in legumes

Deficiency Symptoms

  • Similar to N deficiency
  • Uniform pale green to yellow leaf starting in the new leaves
  • In legumes, the nodules produced are smaller, pale rather than pink, and reduced in number
  • In field crops, poor yield, low protein, pale green and yellow leaves
  • Purpling of margins and interveinal areas is common on both young and old leaves

Factors Affecting Availability

  • Acidic, sandy soils where sulfate has been leached, especially areas with high rainfall
  • Continuously cropped soils low in organic matter

Sensitive Crops

Wheat, barley, oats, triticale, corn, canary seed, canola, sunflower, peas, lentils, chickpeas, beans, alfalfa, clover, medic

TREATMENT OPTIONS

The following OMEX products can assist with addressing and correcting Sulfur deficiency:

Visual Guide