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Revista Brasileira de Fruticultura

versão impressa ISSN 0100-2945

Resumo

LEONARDO, Francisco de Assis Pereira; PEREIRA, Walter Esfrain; SILVA, Silvanda de Melo  e  COSTA, Jandira Pereira da. Content of chlorophyll and SPAD index in pineapple cv. vitória in function of organic-mineral fertilization. Rev. Bras. Frutic. [online]. 2013, vol.35, n.2, pp.377-383. ISSN 0100-2945.  http://dx.doi.org/10.1590/S0100-29452013000200006.

Given the need for utilization of new varieties and improving the nutritional aspects of pineapple, it was conducted this experiment to evaluate the chlorophyll content and SPAD index in pineapple 'Vitória' in function of nitrogen (N) fertilization with urea and poultry litter . For this purpose, an experiment was conducted in randomized block design with four replications. The treatments consisted of five N doses from two sources, organic (poultry litter) and mineral (urea), resulting in nine combinations generated from Central Composite Box Design: T1, 44 and 2.91; T2, 152 and 0; T3, 0 and 10; T4, 44 and 17.1; T5, 2.91 and 260; T6, 10 and 152; T7, 152 and 20; T8, 304 and 10 and T9, 260 and 17.1 g plant-1. The SPAD index, the content of chlorophyll in the leaf and the N content in the D leaf were evaluated. For the relative chlorophyll content (SPAD) has been estimated the maximum value at doses of 16.37 g plant-1 of urea and 200.69 g plant-1 of poultry litter. For the content of chlorophyll the maximum value has been estimated with 19.4 g plant-1 of urea. The SPAD index has positive correlation with chlorophyll and N concentration in the leaf.

Palavras-chave : Ananas comosus; SPAD; urea; poultry litter.

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