TACKLING the commonest trace element deficiency in UK arable crops has been made easier and more effective with the launch of a new concentrated manganese formulation.

Mn350, available from Fielder (UK), includes 35% manganese in both nitrate and sulphate formats, plus significant inclusions of potassium (6.5%), nitrogen (10%) and sulphur (11%) for additional crop nutrition benefits.

Manganese deficiency is common across many soil types and exacerbated by wet and cold conditions, affecting cereals, oilseed rape, legumes and many other crop types. It is estimated to have some impact in 60-70% of UK soils, and is most commonly seen in cereal crops, appearing as light brown stripes of dying tissue on otherwise green leaves.

“If signs of manganese deficiency are visible, then the crop will already be at risk of a yield deficit down the line,” pointed out Barrie Hawkin, of Fielder.

“It’s important to be vigilant and act quickly by applying manganese, particularly when crops are under stress due to cold and wet conditions, or when crops are in water deficit. Manganese deficiency is quite commonly seen, but few appreciate the impact it can have on the yield potential of crops come harvest.”

The new product is a more concentrated form of manganese (35% compared with the 15% most commonly available) and has both nitrate and sulphate salts. This makes it readily available for rapid plant uptake and persistence.

That means it requires lower application rates than conventional forms of manganese, at 0.5-1.5l/ha. “There is also the practical consideration of storage before use and disposal of spent containers,” added Mr Hawkin. “Mn350 is supplied in 5-litre containers, which are easier to store, handle and dispose of than the 1000 litre bulk containers used for most conventional manganese products.”