Summary
This controlled vegetation tray trial evaluated the potential of algal digestate-based biostimulants to enhance productivity and reduce synthetic fertiliser dependence in European horticultural systems. Using three Baltic-region cover crops, the researchers demonstrated that biostimulant application—particularly at 6% concentration—could partially compensate for reduced mineral fertiliser input whilst achieving yields exceeding conventional full-strength fertilisation and improving soil health. The findings align with European Green Deal and Farm to Fork policy objectives for more sustainable and resilient food production.
UK applicability
The findings are likely applicable to UK horticulture, particularly for vegetable production in similar temperate climates. However, the study used palustrine species representative of the Baltic region; UK growers would need to assess performance across a broader range of crop varieties and soil types to validate the approach for local conditions.
Key measures
Crop yield; soil health parameters; mineral nutrient input; application rate of biostimulant (6%); statistical significance (ANOVA and Tukey HSD tests)
Outcomes reported
The study measured crop yield and soil health indicators across three vegetable species (lettuce, radish, spinach) under full and reduced mineral fertilisation regimes, with and without algal biostimulant supplementation. Statistical analysis confirmed significant yield increases with biostimulant application, particularly at 6% rate under nutrient-limited conditions.
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