Summary of Drip application of a biopolymer-based biostimulant enhances root growth and nutrient uptake of processing tomato

Biostimulant Boosts Tomato: Enhancing Root Growth and Yield

Promoting Root Development with Biostimulants

Root growth in plants often suffers due to genetics, environmental stress, and cultural practices. Applying plant biostimulants can significantly improve root systems, which supports stronger shoots and higher productivity. Recent studies tested an innovative biopolymer-based biostimulant, Quik-Link (Italpollina S.p.A., Rivoli Veronese, Italy), to enhance tomato root growth and nutrient uptake.

In Vitro Trials Show Promising Results

Tobacco leaf explants cultured in Murashige and Skoog medium with 1 mL L‑1 Quik-Link regenerated roots successfully, while explants without the biostimulant failed to develop roots. These results highlight how biostimulants help plants establish strong roots, even under controlled conditions.

Greenhouse Experiments: Stronger Roots and Shoots

In greenhouse tests, tomato plants received Quik-Link at 0, 0.12, or 0.24 mL per plant. After 12 days, plants treated with 0.24 mL per plant developed higher root dry biomass and improved root-to-shoot ratios compared to untreated plants. Consequently, biostimulants enhance tomato growth by boosting root systems, which supports healthier shoots.

Field Studies: Increased Yield and Nutrient Uptake

Field experiments combined two fertilization regimes (conventional and reduced input) with Quik-Link application rates (0 and 12 L ha‑1). Application of the biostimulant increased marketable tomato yield by 19.2% under reduced fertilization and 9.7% under conventional fertilization. Moreover, treated plants absorbed more nitrogen, phosphorus, and iron during flowering and fruit set. Interestingly, fruit quality responded mainly to fertilization, with soluble solids increasing under reduced mineral fertilizer rates.

Conclusion: Achieving Better Tomato Performance

Overall, integrating Quik-Link into tomato cultivation strengthens roots, improves nutrient uptake, and raises yield. By using biostimulants, growers can cultivate more resilient plants while optimizing productivity and nutrient management.