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Revista Brasileira de Fruticultura

versão impressa ISSN 0100-2945

Resumo

AJALLA, Ana Cristina Araújo; VIEIRA, Maria do Carmo; VOLPE, Edimilson  e  ZARATE, Néstor Antonio Heredia. Seedling growth of Campomanesia adamantium (Cambess.) O. Berg (guavira), under three levels of shade and substrates. Rev. Bras. Frutic. [online]. 2014, vol.36, n.2, pp.449-458. ISSN 0100-2945.  http://dx.doi.org/10.1590/0100-2945-196/13.

The experiment was conducted in Campo Grande - MS from March 2008 to January 2009. The objective was to evaluate the development of seedlings of Campomanesia adamantium (Cambess.) O. Berg. under three conditions of shading and six substrates. Treatments were three levels of shading ( 0 % , 30 % and 50 % shade ) and six substrates [ 100 % Oxisol soil clayey - LVd ( ta ) ; 100 % Oxisol soil medium texture LVd ( tm ), 75 % of LVd ( ta ) + 15 % + 10 % sand bed - of - semi-decomposed chicken - LVd ( ta ) + CF , 75 % LVd ( tm ) + 15 % + 10 % sand bed - from - semi-decomposed chicken - LVd ( tm ) + CF , 75 % LVd ( ta ) + 15 % sand + 10 % Organosuper® - LVd ( ta ) + OR , 75 % LVd ( tm ) + 15 % sand + 10% Organosuper® - LVd ( tm ) + OR ] . The experimental design was random blocks, arranged in a split-plot with repeated measures. There were three replicates and ten plants per subplot. The shading levels interfered in plant growth characteristics of the stem diameter (greater under the sun), leaf area (greater under 50 % shade) and dry weight of roots (higher under the sun). Considering the development of the seedlings, the observation that under full sun, there is the need to use higher volume irrigation and plant survival was lower, and considering the level of shading of 50 % more suitable for guavira seedling production. About the substrates, LVd ( ta ) was considered the most suitable for the seedling growth percentage of live plants (95.55 % ) without differing from LVd ( tm ) ( 98.88 % ) , higher plant height observed in the development and the final height, higher dry roots differing from the other substrates and greater IQD ( 2.62 ) without differing from the LVd (tm) (1.50).

Palavras-chave : Native plants; Myrtaceae; medicinal plants.

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