The current research elucidated the agronomical, physiological, qualitative characteristics and mineral composition of lettuce (Lactuca sativa L. var. longifolia) after treatments with a beneficial fungus Trichoderma virens (TG41) alone or in combination with a vegetal biopolymer-based biostimulant (VBP; 'Quik-link'). The experiment consisted of lettuce plants grownin threeNconditions: Sub-optimal (0N kg ha-1), optimal (70N kg ha-1), and supra-optimal (140N kg ha-1) N levels. Lettuce grown under 0N fertilization showed a significant increase in fresh yield when inoculated with TG41 alone (45%) and a greater increase with TG41 + VBP biostimulant (67%). At 48 days after transplanting, both the TG41 alone or TG41+VBP biostimulant induced higher values of CO2 assimilation in comparison to the control. The mineral concentrations in leaf tissues were greater by 10% for K and 12% for Mg with the TG41+VBP treatments compared to the untreated lettuce. The lettuce plants receiving either TG41 alone or TG41+VBP biostimulants had a significantly lower nitrate content than any of the untreated controls. In non-fertilized conditions, plants treated with TG41+VBP biostimulants produced lettuce of higher premium quality as indicated by the higher antioxidant activity, total ascorbic acid (+61%-91%), total phenols (+14%) and lower nitrate content when compared to the untreated lettuce.
Appraisal of combined applications of trichoderma virens and a biopolymer-based biostimulant on lettuce agronomical, physiological, and qualitative properties under variable n regimes / Rouphael, Y.; Carillo, P.; Colla, G.; Fiorentino, N.; Sabatino, L.; Giordano, M.; Pannico, A.; Cirillo, V.; Shabani, E.; Cozzolino, E.; Lombardi, N.; Napolitano, M.; Woo, S. L.; El-Nakhel, C.. - In: AGRONOMY. - ISSN 2073-4395. - 10:2(2020), p. 196. [10.3390/agronomy10020196]
Appraisal of combined applications of trichoderma virens and a biopolymer-based biostimulant on lettuce agronomical, physiological, and qualitative properties under variable n regimes
Rouphael Y.
Primo
;Colla G.
;Fiorentino N.;Giordano M.;Pannico A.;Cirillo V.;Cozzolino E.;Lombardi N.;Napolitano M.;Woo S. L.Ultimo
;El-Nakhel C.
2020
Abstract
The current research elucidated the agronomical, physiological, qualitative characteristics and mineral composition of lettuce (Lactuca sativa L. var. longifolia) after treatments with a beneficial fungus Trichoderma virens (TG41) alone or in combination with a vegetal biopolymer-based biostimulant (VBP; 'Quik-link'). The experiment consisted of lettuce plants grownin threeNconditions: Sub-optimal (0N kg ha-1), optimal (70N kg ha-1), and supra-optimal (140N kg ha-1) N levels. Lettuce grown under 0N fertilization showed a significant increase in fresh yield when inoculated with TG41 alone (45%) and a greater increase with TG41 + VBP biostimulant (67%). At 48 days after transplanting, both the TG41 alone or TG41+VBP biostimulant induced higher values of CO2 assimilation in comparison to the control. The mineral concentrations in leaf tissues were greater by 10% for K and 12% for Mg with the TG41+VBP treatments compared to the untreated lettuce. The lettuce plants receiving either TG41 alone or TG41+VBP biostimulants had a significantly lower nitrate content than any of the untreated controls. In non-fertilized conditions, plants treated with TG41+VBP biostimulants produced lettuce of higher premium quality as indicated by the higher antioxidant activity, total ascorbic acid (+61%-91%), total phenols (+14%) and lower nitrate content when compared to the untreated lettuce.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
