pH

pH, or potential of hydrogen, is a scale used to measure the degree of acidity or alkalinity of a solution. This value is generally expressed on a scale from 0 to 14. pH is a fundamental parameter in many scientific, agricultural and horticultural fields, including hemp cultivation.

What is pH?

pH determines whether a solution is acidic, neutral or alkaline. A value below 7 generally indicates an acidic environment, a value close to 7 corresponds to a neutral environment, and a value above 7 indicates an alkaline environment. This measurement is used in many sectors, from chemistry to agriculture.

Why is pH important for plants?

pH influences the availability of many nutrients present in soil or nutrient solutions. Even when nutrients are present, certain pH values can limit their uptake by the roots. Monitoring pH is therefore one of the parameters regularly checked by growers.

pH in hemp cultivation

In hemp cultivation, pH is often monitored to maintain conditions favourable to plant development. The desired values may vary depending on the cultivation method used, whether growing in soil, hydroponics, coco fibre or other systems.

How is pH measured?

pH can be measured using test strips, indicator solutions or electronic pH meters. These tools provide an estimate or an accurate measurement of the acidity level of a solution or substrate.

pH in hydroponics and soilless cultivation

In hydroponic systems and other soilless cultivation methods, pH is monitored particularly frequently. As nutrients are supplied directly through a nutrient solution, changes in pH can influence its balance and the availability of elements to the plant.

An essential parameter in horticulture

pH is one of the most important indicators in crop management. Monitoring it provides a better understanding of the root environment and helps maintain conditions suited to plant development, whether for hemp or other plant species.