Summary
This greenhouse experiment evaluated two protein gel formulations derived from bovine hide and wool hydrolysates applied as root treatments to tomato seedlings. The results demonstrated that protein hydrolysate treatments substantially increased photosynthetic pigments (10%), sugars (75%), and polyphenols (16%) compared to untreated controls, with a mixture of gelatin and keratin hydrolysates showing the strongest effects. These findings suggest that amino acid-enriched biostimulants may support vigorous seedling development and potentially enhance subsequent fruit quality.
Regional applicability
The study was conducted in greenhouse conditions using controlled horticultural practices applicable to temperate regions including the United Kingdom. Transferability to outdoor field production in UK conditions would require validation, though the use of protein hydrolysates as biostimulants is broadly compatible with UK horticulture practice.
Key measures
Biometric characteristics (measured weekly), photosynthetic pigments, dry weight, total sugars, polyphenols, and antioxidant activity in seedling leaves
Outcomes reported
The study measured biometric characteristics, photosynthetic pigment content, dry weight, sugar and polyphenol concentrations, and antioxidant activity in tomato seedlings treated with protein gel biostimulants versus untreated controls. Treatment effects were assessed weekly during greenhouse cultivation.
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