TY - JOUR
T1 - Appraisal of combined applications of trichoderma virens and a biopolymer-based biostimulant on lettuce agronomical, physiological, and qualitative properties under variable n regimes
AU - Sabatino, Leo
AU - Colla, Giuseppe
AU - Cozzolino, Eugenio
AU - Pannico, Antonio
AU - Giordano, Maria
AU - Fiorentino, Nunzio
AU - Lombardi, Nadia
AU - El-Nakhel, Christophe
AU - Cirillo, Valerio
AU - Shabani, Edris
AU - Napolitano, Mauro
AU - Carillo, Petronia
AU - Woo, Sheridan L.
AU - Rouphael, Youssef
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10447/452559
M3 - Article
VL - 10
SP - 1
EP - 22
JO - Agronomy
JF - Agronomy
SN - 2073-4395
ER -