Abstract

GANDICA OMANA, Henrry  and  PENA, Haydee. Dry matter and nutrient accumulation in tomato (Solanum lycopersicum L.) grown under protected environment. Bioagro [online]. 2015, vol.27, n.2, pp.111-120. ISSN 1316-3361.

The study of plant nutrient uptake is a tool that allows producers and field technicians tune fertilization programs to determine the amount of nutrients demanded by plant tissues, at different stages of crop growth. With the interest of having this information, a study was conducted in the Research and Production Protected Module of the Universidad Nacional Experimental of Táchira, UNET. Destructive sampling was performed at random with fortnightly in tomato plants (Solanum lycopersicum L.) belonging four cultivars: two with determinate growth habit, Cid and Dominator, and two indeterminate (L2 and L3), starting 15 days after transplantation (ddt). Subsequently the percentage of N, P, K, Ca and Mg present in tissues which accumulated along the dry weight was used to estimate the total amount extracted by the crop. Tomato cultivars evaluated showed sigmoid growth curves, accumulating in the maturation stage between 206 y 344 g of dry matter per plant. These results are evidence that the dynamics of nutrient uptake varies among cultivars and deserves different fertilizer recommendations.

Keywords : Fertilization; growth curve; macronutrients.

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