Effects of biostimulants on Solanum lycopersicum L. plant growth and pest resistance

R. Antón-Herrero, C. García-Delgado, B. Mayans, R. Camacho-Arévalo, E. Eymar
In the next years, more severe droughts are expected supposing lower biomass productivity and energy efficiency in systems, also increasing the incidence of pests. The work carried out has been based on the comparison of efficiency between biostimulant fertilizer products (MCT®) and conventional mineral fertilizers. Tests on perlite with tomato were carried out under controlled conditions of temperature, relative humidity and light in growth chambers. Biometric parameters (weights and fruit quality), as well as foliar indexes and analyzes were evaluated. The evaluation of the root morphology and nutritional status was done using the SEM-EDX analysis. The use of the biostimulant products has shown benefits in the long term by enhancing the chlorophylls activities and the roots production. The higher root production was probably related with the higher number of cells and structural nutrients (Ca, Si, S and P) measured in roots of the biostimulant treatment. This root development has also resulted in a less incidence of the red mite pest since the aerial part of the tomato plants were less damaged with the biostimulant treatment.
Antón-Herrero, R., García-Delgado, C., Mayans, B., Camacho-Arévalo, R. and Eymar, E. (2021). Effects of biostimulants on Solanum lycopersicum L. plant growth and pest resistance. Acta Hortic. 1321, 197-204
DOI: 10.17660/ActaHortic.2021.1321.26
hydroponic, Solanum lycopersicunm L., red mite, biostimulant, plant growth, root morphology, SEM

Acta Horticulturae