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Grass Silage Leaflet 2020

• Macro-minerals unchanged over past 3 seasons except for electrolytes
• Electrolyte elements (potassium, sodium, chloride) higher due to warmer spring
• Cation-anion balance rises to +423 meq/kg
• Soil contamination substantially lower, reflecting good conditions at grass harvesting
• • molybdenum falls dramatically (20%) as may drier than average
• Hypocalcaemia risk increased, but antagonistic challenge to cow fertility and health reduced