Function of Manganese
Manganese is a micronutrient that is essential for many plant functions, particularly in enzyme systems. Manganese is involved in photosynthesis and change of leaf colour is often the first visual symptom of deficiency.
Manganese deficiency seriously impairs crop growth, quality and yield. Manganese deficiency affects many crops including cereals, vegetables, brassicas, and root crops. Deficiencies are more likely to occur in crops grown on organic and peaty soils with pH above 6.0 or mineral soils with a pH above 6.5.
Use Manganese 17.5 when deficiency is diagnosed or suspected, or as a maintenance dressing to prevent less than optimum growth. Foliar uptake will be enhanced by the addition of NA13¹ unless already in tank mix with a pesticide.
Apply 1.5 - 3 l/ha, in a minimum of 200 l/ha water.
The spray tank should be filled with half the required water. If applicable, add the required amount of NA13 to the water before the Manganese 17.5. Measure the required amount of Manganese 17.5 and add to the tank whilst maintaining constant agitation. Add remaining water to correct dilution and spray.
Do not apply in tank mix with pesticides when crop is showing deficiency symptoms, is under stress, or in adverse weather conditions.
¹ NA13 is an adjuvant designed to help with improved adhesion, deposition and penetration of the spray solution on the leaf surface. NA13 should be added at 0.1% of the spray volume, e.g. 100 ml in 100 litres of water. Maintain agitation and apply immediately after mixing.
² SW7 may be used as an alternative adjuvant on potatoes, vegetables, peas and beans. Choose SW7 if it will be difficult to achieve good coverage, the leaves are waxy or tightly layered, or with dense crop canopies.