The Effect of a Preparation Containing Humic Acids on the Growth, Yield, and Quality of Strawberry Fruits (Fragaria × ananassa (Duchesne ex Weston) Duchesne ex Rozier)

Humic acids are plant biostimulants, which can be used in horticulture as an effective and relatively inexpensive alternative to chemical means of production. The aim the study was assess how fertiliser containing humic affected growth, yield, quality strawberry fruits. In 2021, experiment conducted on two-year-old bushes (Fragaria× ananassa (Duchesne ex Weston) Duchesne Rozier) ‘Rumba’ cultivar growing a horticultural farm northern Wielkopolska, Poland. During season, soil fertilized by mineral fertilization were sprayed two, three, or four times with Humi Brown Gold acids. experiment, enzymatic activity, biometric parameters leaves, fruit yield assessed. It determined that, experimental treatments where foliar fertilisation had been applied, activities proteases dehydrogenases well respiration increased more than double significantly higher variants fertilisers applied. treated developed 60% larger surface bloomed intensively gave yield. Fruits firmness harvested from such bushes, weight extract content those difference several tens percent. This leads conclusion that application could plantations.