Resumo

TOMALA, Héctor Méndez; LAZO, Rosa Pertierra  e  ESPINOSA, Carlos Balmaseda. Water efficiency in tomato grown in inert substrate. RCTU [online]. 2023, vol.10, n.2, pp.23-34. ISSN 1390-7697.  https://doi.org/10.26423/rctu.v10i2.753.

The province of Santa Elena is a region with significant agricultural potential for various crops. Marked water deficit and the presence of extensive degraded soil areas pose a challenge in sustaining food security. Soilless crops are known for substantial water savings and emerge as a viable alternative in these regions. This research aimed to assess the impact of nutrient solution on the chemical parameters of the recirculating solution, water use efficiency, and yield of a protected tomato crop (Lycopersicon esculentum L.) under an inert substrate system (50% rice husk and 50% sand). Treatments were arranged in a completely randomized design with three replicates, testing three recirculating nutrient solutions: Hoagland/Arnon, Sonneveld/Voogt, and Steiner. Results revealed that the pH and electrical conductivity in all nutrient solutions exceeded the appropriate thresholds for cultivation, necessitating the discontinuation of recirculation. Gross and commercial yields, as well as water efficiency, showed no significant differences. Concerning the fruit, the Sonneveld solution exhibited superior fresh weight, while the Steiner solution excelled in dry weight percentage and total soluble solids..

Palavras-chave : Water saving; electrical conductivity; semi-arid climate; hydroponics; nutrient solution.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )