ARTÍCULO

Assessing growth and antioxidant properties of greenhouse-grown lettuces (Lactuca sativa L.) under different irrigation and carbon fertilization management.

Autores: Garmendia, I.; Bettoni, M. M.; Goicoechea Preboste, María Nieves
Título de la revista: REVISTA DE LA FACULTAD DE CIENCIAS AGRARIAS
ISSN: 0370-4661
Volumen: 52
Número: 1
Páginas: 87 - 94
Fecha de publicación: 2020
Resumen:
Previous studies have demonstrated that moderate water restrictions and enhanced CO2 concentration can maintain or improve yield and accumulation of secondary compounds in lettuce under greenhouse conditions. Therefore, the aim of this study was to evaluate the combination of reduced soil moisture and carbon fertilization in shoot fresh weight (FW) and antioxidant capacity of two Batavia lettuce cultivars (Batabia Rubia Munguia; BRM and Maravilla de Verano; MV). Moderate water restriction treatment was equivalent to 2/3 of the field capacity and elevated CO2 concentration (ECO2) was fixed at similar to 700 mu mol mol(-1). While CO2 enrichment exerted a positive effect on shoot FW of MV, especially in combination with water restrictions, the yield of the cultivar BRM was not affected by CO2 concentration, nor by irrigation regime. However, antioxidant capacity of BRM plants was increased under ECO2 conditions. These results demonstrate that carbon fertilization and/or moderate water limitations can be strategically used to enhance nutritional value and growth of greenhouse lettuce.