Soil pH (High / Low)

A soil pH between 6.5 and 7.0 is found to be ideal for agronomic crops.  A pH that is greater or less than this specified range can affect the nutrient availability and toxicity.  It is essential to understand the root of problem and identify what causes soil acidity and how to correct it for effective nutrient management.

Soil pH is the measurement of the relative amount of acidity or alkalinity in the soil by measuring the concentration of hydrogen ions (H+) and the hydroxyl ions (OH-).  The pH scale ranges from 0 to 14, with 0 being extremely acidic and 14 being extremely alkaline. A measurement of 7 indicates equal amounts of acidity and alkalinity. 

Every number on the pH scale represents 10x the value of the previous number.  A pH of 6 is 10x more acidic than a pH measurement of 7.  The ideal range is between 6.5 to 7.0 for agronomic crops.  Soil pH will normally range between 5.0 to 8.5.  A pH measurement outside of this range represent severe yield-limiting situations for most crops.

Soil acidity could originate from rain, microbial activity and nitrogen fertilizers.  Of these factors listed, only nitrogen fertilizer can be controlled by growers.

Understand the cause and effect of an unbalanced pH value on crop yield:
Read the complete report from AgSource Harris (a subsidiary of Cooperative Resources International) HERE

harris pH


Are your crops affected by an unbalanced pH?  Contact BioAgronics for a personal consultation and to discuss options and other potential crop limiting factors.

 

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