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Crop NutritionBy Dr. Ramesh Patel, Chief Agronomist

Manganese Sulphate 30.5% Micronutrient Fertilizer: Restoring Photosynthetic Vigor in High-pH Alkaline Soils

Published on 2026-09-0811 mins readFCO 1985 & ISO 9001:2015 Verified
Manganese Sulphate 30.5% Micronutrient Fertilizer: Restoring Photosynthetic Vigor in High-pH Alkaline Soils
Executive Summary & Key Takeaways

Overcome manganese lock-up in soils with pH above 7.0. Discover how Manganese Sulphate Monohydrate 30.5% powers water photolysis and enzyme activation in crops.

Among essential trace elements, manganese deficiency is one of the most frequently misdiagnosed nutritional problems in commercial farming. Applying Manganese Sulphate 30.5% micronutrient fertilizer is critical for maintaining Photosystem II water-splitting activity in crops grown on alkaline, high-calcium, or over-limed agricultural soils.

1. The Biochemistry of Manganese in Plant Metabolism

  • •Photolysis of Water (Hill Reaction): Manganese forms the reactive core of the Oxygen-Evolving Complex (OEC) in chloroplasts, catalyzing the splitting of water into hydrogen and oxygen.
  • •Nitrogen Reduction: Manganese activates nitrate reductase and hydroxylamine reductase, directly converting inorganic soil nitrates into amino acids and proteins.
  • •Lignin & Disease Defense: Essential for phenylalanine ammonia-lyase (PAL), reinforcing root cell walls against soil-borne pathogens.

2. Auron Manganese Sulphate Monohydrate 30.5% Specifications

Auron Manganese Sulphate Monohydrate delivers high nutrient density in pale pink, free-flowing crystal powder:
  • •Manganese Content (Mn): 30.5% min
  • •Sulphur Content (S): 17.0% min
  • •Heavy Metals (Pb, Cd, As): Strictly < 20 ppm total
  • •Water Solubility: 100% complete with no nozzle-clogging sludge.

3. Field Correction Schedule

  • •Soil Broadcasting: 8 to 12 kg per acre during soil preparation for Sugarcane, Wheat, Cotton, and Citrus.
  • •Foliar Intervention: 2.5 to 3 grams per liter sprayed at first sign of interveinal leaf speckling.
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