Hydroponic Nutrient Availability Per PH Range

Hydroponic Nutrient Availability Per PH Range

Hydroponic Nutrient Availability Per PH Range

In hydroponic systems, the availability of micronutrients to plants is heavily influenced by the pH of the nutrient solution. Here is a list of micronutrient availability to cannabis at different pH ranges in hydroponic systems:

pH 4.0-4.9

Iron (Fe): high availability
Manganese (Mn): high availability
Zinc (Zn): high availability
Copper (Cu): high availability
Boron (B): high availability
Molybdenum (Mo): low availability

pH 4.0-4.9

Iron (Fe): high availability
Manganese (Mn): high availability
Zinc (Zn): high availability
Copper (Cu): high availability
Boron (B): high availability
Molybdenum (Mo): low availability

pH 5.6-6.0

Iron (Fe): high availability
Manganese (Mn): high availability
Zinc (Zn): high availability
Copper (Cu): low availability
Boron (B): moderate availability
Molybdenum (Mo): high availability

pH 6.1-6.5

Iron (Fe): moderate availability
Manganese (Mn): high availability
Zinc (Zn): high availability
Copper (Cu): low availability
Boron (B): low availability
Molybdenum (Mo): high availability

pH 6.6-7.0

Iron (Fe): low availability
Manganese (Mn): moderate availability
Zinc (Zn): moderate availability
Copper (Cu): very low availability
Boron (B): very low availability
Molybdenum (Mo): high availability

pH 7.1-7.5

Iron (Fe): very low availability
Manganese (Mn): low availability
Zinc (Zn): low availability
Copper (Cu): very low availability
Boron (B): very low availability
Molybdenum (Mo): high availability

It is important to note that the ideal pH range for hydroponic cannabis cultivation is generally between 5.5 and 6.5, as this range allows for optimal nutrient uptake and availability. However, slight variations in pH can have a significant impact on the availability of micronutrients, so it is essential to regularly monitor and adjust the pH of the nutrient solution to ensure that your cannabis plants have access to the micronutrients they need.


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