Why is pH monitoring important in greenhouse production?

pH monitoring is essential in greenhouse production because it directly influences nutrient availability and, consequently, plant health. The pH level of the growing medium or hydroponic solution affects the solubility of nutrients. Most nutrients are readily available to plants within a specific pH range (usually between 5.5 and 6.5 for many crops). Outside of this range, certain nutrients can become less available or even toxic to plants.

For example, if the pH is too low (acidic), nutrients like calcium and magnesium may become less available, leading to deficiencies that can impact plant growth. Conversely, if the pH is too high (alkaline), key nutrients like iron and manganese may become unavailable, resulting in symptoms such as chlorosis.

Thus, regular monitoring and adjustment of pH levels help ensure that plants receive the correct balance of nutrients, supporting their overall health and productivity. This understanding is vital for greenhouse managers to optimize growing conditions and produce healthy crops efficiently.