Irrigation and nutrition management strategies in greenhouse hydroponic tomato: effect on yield and water efficiency

 

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Autor: Soto-Bravo, Freddy
Formato: artículo original
Estado:Versión publicada
Fecha de Publicación:2025
Descripción:In modern agriculture, efficient use of water and fertilizers is imperative to meet the growing global demand for food driven by rapid population growth and the potential global water crisis exacerbated by climate change. This study was conducted on hydroponic tomato cultivation in a greenhouse, including six treatments that combined three levels of nutrition (low, medium, and high) and two irrigation strategies (lower volume with higher frequency and higher volume with lower frequency). Irrigation and drainage volumes, crop evapotranspiration (ETc), drainage electrical conductivity (CE), volumetric humidity in the substrate (θ), dry weight (PS), leaf area (AF), total fruit yield, commercial yield of different qualities and waste, and water use efficiency (WUE) were evaluated. There was no effect of the interaction between the level of nutrition and irrigation strategy for any of the variables. Treatments with optimal nutrition achieved the highest WUE, associated with a higher production of commercial first-quality fruits, less waste, and a reduced ETc compared to high nutrition. In contrast, treatments with high nutrient concentrations increased water demand and substrate EC, negatively affecting yield and WUE. The combination of medium nutrition with irrigation adjusted to crop demand favored a better root environment of humidity and salinity, which in turn benefited a more balanced vegetative/productive growth, which was reflected in higher yield and fruit quality, and in the USA.
País:Portal de Revistas TEC
Institución:Instituto Tecnológico de Costa Rica
Repositorio:Portal de Revistas TEC
Lenguaje:Español
OAI Identifier:oai:ojs.pkp.sfu.ca:article/7652
Acceso en línea:https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/7652
Palabra clave:Water use efficiency
fertirrigation
water balance
irrigation on demand
Eficiencia de uso de agua
fertiriego
balance hídrico
riego por demanda