POTATO Crops across the UK have been showing increasing signs of manganese deficiency this season, driven by a convergence of environmental pressures and heightened crop demand at a critical stage of growth, according to the technical team at OMEX.
Manganese plays a vital role in enzyme function, nitrogen metabolism and photosynthesis. Deficiency can lead to pale, chlorotic leaves, reduced vigour and ultimately lower yield potential.
Typical symptoms include pale green or yellowing patches, fine grey speckling on younger leaves, reduced tillering and a general lack of vigour.
Early identification is critical, particularly in fast-growing crops where deficiencies can escalate quickly. Tools such as SAP analysis can help detect issues before visual symptoms appear, allowing for timely intervention.
OMEX Business Growth Director, Scott Baker, said a combination of seasonal factors has intensified the issue.
“Cool overnight temperatures have restricted plant metabolic activity, limiting nutrient uptake even where manganese is present in the soil,” he said. “At the same time, prolonged wet conditions have either leached manganese from around the roots or converted it into less available forms under waterlogged conditions.”
