Protein hydrolysates appear to be promising among biostimulants because they include large amounts of components including amino acids, short peptides, and osmoactive substances (proline, glycine betaine) that are advantageous for plant productivity under adverse environmental conditions (Van Oosten et al., 2017). Plant-based biostimulants can boost growth, yield, quality, and bioactive chemical content in a variety of crops. Current study examines the effects of an enzymatic hydrolysate product (Activeg) applied three times (3, 6, or 9 times) and a non-treated control on the production and quality of tomato (Solanum lycopersicum L.) ‘Miniplum’ (Proxy F1) plant fruits grown in a greenhouse during the autumn and winter seasons. This study was carried out at the University of Federico II, department of agriculture (40°49' N, 14°20' E). Split plot design was used to distribute experimental treatments on the field; the resulting data were analyzed using ANOVA and the SPSS software after angular transformation. The usage of the biostimulant at 3 and 6 irrorations led to higher yield, while 6 times improved fruit firmness and soluble solid content accumulation. The biostimulants were found to be responsible for higher yields and better-quality tomato fruits, during autumn-winter season in this study, and could be used to cut down on the use of chemical fertilizers.

protein hydrolisate; antioxidant; miniplum; abiotic stress.

environmental engineering

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