• 
  Micronutrients
  • Nitrogen (N)
  • Phosphorous (P)
  • Potassium (K)
  • Magnesium (Mg)
  • Calcium (Ca)
  • Sulphur (S)
  • Boron (B)
  • Copper (Cu)
  • Cobalt (Co)
  • Iron (Fe)
  • Manganese (Mn)
  • Zinc (Zn)
  • Chloride (Cl)
• 
  Advice by Sector
  • Cereal Crops
  • Oil Seed Rape
  • Potatoes
  • Sugar Beet
  • Pulses, Peas, Beans & Soya
  • Vegetables, Melons & Salad Crops
  • Top and Soft Fruit
  • Grassland / Pasture
  • Amenity & Sports Turf
  • Home & Garden
• 
  Identifying & Rectifying Deficiencies
  • The Effect Of Soil pH On Nutrient Availability
  • Soil Type, Condition And Likely Deficiencies
  • Crop Susceptibility
  • Typical Deficiency Symptoms by Nutrient

A pH below 6.0 starts to limit the availability of major nutrients whilst a pH above 7.0 starts to limit trace element uptake. The exception is Molybdenum which is more available as the pH rises. The usual practice of keeping agricultural soils at an average pH of around 6.5 is a compromise for nutrient availability

In this diagram, the denser the band colour the greater the availability. As the shading diminishes availability decreases.