Five years of oxen grazing enhances soil carbon and structure in alpine vineyards

A study in Northern Italy by Fracasso Ilaria et al (2026) released in Scientific Reports provides evidence supporting the benefits of low-density cattle integration on vineyards.

Headline findings

• Higher soil carbon & nitrogen: ~14% increase in total organic carbon and ~12% increase in total nitrogen after five years of oxen grazing
• Improved soil structure: Greater micro-aggregate stability without increased soil bulk density (no evidence of compaction)
• Stable nutrients: No significant changes in available P, K, or other measured elements
• Microbial shift: Slight increase in bacterial abundance; fungal biomass unchanged
• No vine damage observed

Methods

• Five-year field comparison of oxen-grazed vs. ungrazed vineyard inter-rows
• Density of 5-7 oxen ha^− 1
• Measured soil carbon, nitrogen, dissolved C, and nutrients
• Assessed bulk density and aggregate stability
• Quantified microbial biomass and bacterial/fungal abundance
• Statistical comparison of treatment effects over time

Results

• Soil organic carbon: ↑ ~14% in grazed plots
• Total nitrogen & dissolved carbon: ↑ ~11–12%
• Soil structure: Increase in fine water-stable aggregates (~14%)
• Soil compaction: No increase in bulk density
• Microbiology: Slight rise in bacterial abundance; fungi unchanged
  

Figure

Dissolved Organic Carbon (DOC), Dissolved Carbon (DC), Dissolved Inorganic Carbon (DIC) and Dissolved Nitrogen (DN) content in mg L^-1 in non-grazed and oxen-grazed sites (n = 15). Asterisks over to the boxes indicate statistically significant differences between treatments assessed by Student´s t-test (* = p < 0.05; ** = p < 0.01; *** = p < 0.001). If no significant difference was detected n.s. is displayed.

Overall conclusion

Moderate oxen grazing improved soil carbon and structure without causing compaction, supporting its use as a sustainable vineyard management strategy.