Journal of Food, Agriculture and Environment

Visual symptoms and growth parameters linked to deficiency of macronutrients in young Swietenia macrophylla plants

Author(s):

Ismael de Jesus Matos Viégas *, Allan Klynger da Silva Lobato, Max Franck da Silva Rodrigues, Raimundo Lázaro Morais da Cunha, Dílson Augusto Capucho Frazão, Cândido Ferreira de Oliveira Neto, Heráclito Eugênio Oliveira da Conceição, Elaine Maria Silva Guedes, Gustavo Antonio Ruffeil Alves, Sávia Poliana da Silva

Recieved Date: 2011-11-18, Accepted Date: 2012-01-03

Abstract:

The aim of this study was to characterize the symptoms linked to deficiencies of macronutrients in young Swietenia macrophylla plants, evaluating effects produced by nutrient omissions on macronutrient level in leaf and growth parameters such as dry matter of leaf, petioles, stem and root and total dry matter using missing element technique. Plants were grown in nutrient solution of Bolle-Jones, the treatments consisted in omission of some nutrients like N, P, K, Ca, Mg and S, as well as control treatment used was complete nutrient solution. The experimental design was completely randomized with 7 treatments (N, P, K, Ca, Mg and S deficiencies, and control) and 5 replicates. The omission of all macronutrients resulted in the expression of visual deficiency symptoms, reduction of dry matter and leaf contents of these nutrients. The order in limiting the production of dry matter in leaves, stems and roots, and total dry matter were N>P>Ca>Mg>K>S, and in petiole N>Ca>P>K>Mg>S. In control treatment nutrient levels were N 20.9, P 2.2, K 15.7, Ca 9.2 Mg 2.6 and S 4.3 g kg^-1, while in treatments with deficiency N 15.1, P 1.4, K 3.4, Ca 4.3, Mg  0.6 and S 1.3 g kg^-1.

Keywords:

Mahogany, Swietenia macrophylla, mineral nutrition, nutritional deficiency

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Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 1
Category: Environment
Pages: 937-940

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