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Sergio Valiengo Valeri Luiz Gustavo Ennes Pizzaia Ariadne Felício Lopo de Sá Mara Cristina Pessoa da Cruz


The objective of this study was to evaluate the growth, the morphological alterations and the mineral composition of brazilwood (Caesalpinia echinata) plants caused by mineral nutrients omission in a green house experiment. The experimental units were distributed in the green house according to a completely random design. The treatments, each repeated five times, were the following : check (natural soil), complete (N, P, K, Ca, Mg, S, B, Cu, Mn, and Zn) and a complete solution but for the omission of one of the nutrients in parenthesis. Each plot was represented by a plant growing in a 7 dm3 vase filled with Quartzarenic Neosol. The analyzed variables were the following: visual nutritional deficiency symptoms, plant height, stem diameter, shoot dry matter, stem, branches and leaves included, and leaf nutrients level. The omission of nitrogen limited plant growth in height and shoot biomass production. The first visual deficiency symptoms were those due to N omission followed by those caused by P, Ca, Mg, S, Cu, and Mn omissions. Later on the K and B deficiency symptoms became visible. The omission of a nutrient always caused its level in the leaves to be significantly lower than that found when it was not omitted. 

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VALERI, Sergio Valiengo et al. EFFECTS OF NUTRIENT OMISSION IN Caesalpinia echinata PLANTS. CERNE, [S.l.], v. 20, n. 1, p. 73-80, apr. 2016. ISSN 2317-6342. Available at: <http://cerne.ufla.br/site/index.php/CERNE/article/view/962>. Date accessed: 18 sep. 2019.
Brazilwood, nutritional deficiency, diagnosis, forestal nutrition.