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Article Index
Foliar Nutrition
Reasons for deficiency
Plant Nutrients
Requirements & signs of deficiencies
Symptoms of nutrient deficiencies
Trace element deficiency table
Influence of the least nutrient
The influence of pH
The effect of pH
Absorbition of nutrients IONS
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The effect of pH on the availability of nutrient elements

The pH value of a particular soil plays an important role in the availability of micro-nutrients, as the following table illustrates:
Availability of Nutrient Elements
graph2
Nutrient deficiencies will become apparent if the pH is higher or lower than the recommended pH range for individual plants. For example, if the pH is consistently 7.5, one can expect interveinal chlorosis to occur, an indication of an iron deficiency.

The chart shows a pH range of 4.00 to 10.00. The width of the black section for each nutrient represents the maximum availability of that nutrient. The widest place denotes the most availability. The narrowest part denotes the least availability. The dotted line at pH 6.25 indicates the maximum number of elements at their highest availability.



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