Resumo

BRANCO, Roberto Botelho Ferraz et al. Transport of ¹⁵N and yield of the grafted tomato irrigated with carbonated water. Hortic. Bras. [online]. 2007, vol.25, n.1, pp. 77-81. ISSN 0102-0536.  http://dx.doi.org/10.1590/S0102-05362007000100015.

We evaluated the action of the carbon dioxide dissolved in the irrigation water and the grafting of the tomato in the transport of ¹⁵N in the tissue of the plant and in the production of the culture. The treatments were the CO₂ doses (0; 5 and 10 L min^-1) and grafted and ungrafted tomato plant. These treatments were arranged in a 3x2 factorial scheme, in completely randomized design, with three replications. The variables analysed in the leaves and fruits were dry mass production, total nitrogen, excess of ¹⁵N, amount of nitrogen originated from the fertilizer, percentage of recovery of the fertilizer and commercial fruits production. There was no significant statistical difference among the treatments for any variable. The carbon dioxide dissolved in the irrigation water and the grafting of the tomato did not interfere in the transport of ¹⁵N to the shoots tissue neither in the yield.

Palavras-chave : Licopersycon esculentum Mill; carbon dioxide; nitrogen.