1. Sodium increases grass palatability
University research has consistently proven that sodium applied in fertiliser increases sugar content and digestibility of grass making it more palatable.
2. Sodium changes grazing behaviour
The increased palatability from applying sodium fertiliser stimulates changes in grazing behaviour with increased grazing time, bites and rumination time which together drive an 18.6% increase in DM intake.
3. Sodium increase output
The increase DM intake drives higher milk yield and butterfat.
Additional benefits of sodium in grazing fertiliser:
• Sodium ensures optimal potassium to sodium (K:Na) = reduced risk of hypomagnesaemia
• Sodium reduces somatic cell count and increases butterfat; both can be affected by heat stress
• Sodium improves palatability which increases dry matter intakes and forage utilisation
• Sodium helps buffer rumen pH and reduces the risk of acidosis
• Sodium costs c. 2-3p per head per day providing cost effective mineral supplementation that more than pays for itself in increased animal performance
https://www.originsoilnutrition.co.uk/wp-content/uploads/2026/04/Tech-Talk-April-2026-sodium-in-grazed-grass.pdf