DEFICIENCY OF MACRONUTRIENTS IN SANGRA D’ÁGUA (Croton urucurana, Baill.) SEEDLINGS

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Maria Claudia Mendes Sorreano Eurípedes Malavolta Denis Herisson da Silva Cleusa Pereira Cabral Ricardo Ribeiro Rodrigues

Abstract

This study had the objectives of inducing and describing defi ciency symptoms of nitrogen, phosphorus, potassium, calcium, magnesium and sulfur, and evaluating the effect of nutrient omission on the foliar mineral composition of “sangra d’água” (Croton urucurana) young plants. The experiment was carried out in a green house and used the technique of diagnosis by subtraction. The experimental design was of randomized blocks, with seven treatments and three replicates. Macronutrient omission led to morphological alterations expressed by visual symptoms being the fi rst symptons occurring on the treatments with omission of N, K, Ca and Mg treatments, and later on the treatments with omission of P and S. Growth parameters, namely height, diameter, number of leaves and of branches were affected by the treatments with omission of N, Ca and Mg. Dry matter yield was not signifi cantly decreased by the omission of macronutrients.

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How to Cite
SORREANO, Maria Claudia Mendes et al. DEFICIENCY OF MACRONUTRIENTS IN SANGRA D’ÁGUA (Croton urucurana, Baill.) SEEDLINGS. CERNE, [S.l.], v. 17, n. 3, p. 347-352, may 2015. ISSN 2317-6342. Available at: <http://cerne.ufla.br/site/index.php/CERNE/article/view/54>. Date accessed: 19 sep. 2019.
Keywords
Native specie, foliar nutrient diagnosis, mineral plant nutrition
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