Resumo

PENA, MAYDA Y.; CASIERRA-POSADA, FÁNOR  e  MONSALVE, OSCAR I.. Soilless tomato production (Solanum lycopersicum L.) in rice hulls mixed with mineral and organic materials. rev.colomb.cienc.hortic. [online]. 2013, vol.7, n.2, pp.217-227. ISSN 2011-2173.

Limiting factors of soil, such as salinization, depletion of natural fertility and physical deterioration, have led to the search for improved technologies for use in the development and production of the tomato. A study was carried out in Chia (Colombia) at the Bio-Systems Center of the Jorge Tadeo Lozano University that aimed to determine the effect of different substrates based on organic and inert materials on the production and fruit quality of tomatoes grown under greenhouse conditions. The hybrid Vitoria was used as the plant material and the fruits were selected according to their commercial classification (first, second, third and industrial). The materials used for the preparation of substrates were: raw rice hulls, burned rice hulls, open-air rice hulls, slag coal, coconut fiber and zeolite, which were evaluated physically and chemically. The response parameters were: total soluble solids, total titratable acidity, pH and weight loss. The total titratable acidity and total soluble solids increased depending on the substrate used. Zeolite mixed with burned rice hulls induced an increase in the total soluble solids and, when mixed with open-air rice hulls, increased acidity. The pH of the fruit juice values did not differ with respect to the substrates. The highest production quality was obtained with plants grown in a mixture of zeolite and burned rice hulls and of zeolite and openair rice hulls.

Palavras-chave : substrates; total soluble solids; total titratable acidity; pH; weight loss.

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