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vol.54 issue1-2ABSORÇÃO E ACUMULAÇÃO DE NUTRIENTES EM ESTÉVIA Stevia rebaudiana (Bert.) Bertoni: I. MACRONUTRIENTESMANEJO DA IRRIGAÇÃO DA CULTURA DA ALFACE (Lactuca sativa L.) ATRAVÉS DO TANQUE CLASSE A author indexsubject indexarticles search
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Scientia Agricola

Print version ISSN 0103-9016

Abstract

LIMA FILHO, O.F. de; MALAVOLTA, E; SENA, .O.A. de  and  CARNEIRO, J.W.P. ABSORÇÃO E ACUMULAÇÃO DE NUTRIENTES EM ESTÉVIA Stevia rebaudiana (Bert.) Bertoni: II. MICRONUTRIENTES. Sci. agric. [online]. 1997, vol.54, n.1-2, pp. 23-30. ISSN 0103-9016.  http://dx.doi.org/10.1590/S0103-90161997000100004.

Uptake and accumulation of micronutrients by stevia were studied under field conditions. Two nutritional indices were evaluated: Nutritional Relative Absorption Rate and Nutritional Organogenic Net Accumulation Rate. Seven samplings with fortnight intervals were made beginning after transplanting. Shortly before or at flowering the production of 1 ton of dry leaves demands, in g: B-89; Cu-26; Fe-638; Mn-207; Zn-13. For seed production corresponding to 1 ton of dry leaves, the extraction of micronutrients, in g, is: : B-226; Cu-76; Fe-2550; Mn-457; Zn-33.

Keywords : stevia; mineral nutrition; micronutrients; accumulation of nutrients; uptake rate.

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