Macronutrients omission in development of african mahogany seedlings

Cristiane Ramos Vieira, Oscarlina Lúcia dos Santos Weber, José Fernando Scaramuzza

Abstract


The study aimed to identify the visual symptoms of macronutrients deficiencies, growth and the most absorbed by african mahogany (Khaya anthotheca Welv.) seedlings, submitted to macronutrients omission. The seedlings were grown in tubes containing sand, then were transplanted to PVC tube with sand and submitted for 15 days to complete nutrient solution. Then, were submitted for 90 days to complete nutrient solutions (macro and micronutrients) and omission of N, P, K, Ca, Mg and S, constituting a randomized design with seven treatments and four replications. The symptoms of deficiency were described each five days. At the end of the experiment, the seedlings were evaluated to height, diameter, dry biomass, Dickson quality index and concentration of macronutrients. In this context, the growth and quality of Khaya anthotheca was more limited by N, K and S omissions that were the most absorbed by the seedlings on complete solutions.

Keywords


Khaya anthotheca; Nutritive solution; Missing element; Plants nutrition



DOI: https://doi.org/10.5902/2316980X16042

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General DOI: 10.5902 / 2316980X (the specifics are in the ABSTRACTS - click on the article title, in summary)

"The papers published in the journal Ecology and Forest Nutrition / Ecology and Forest Nutrition are the responsibility of the authors and do not necessarily represent the opinion of the editors. The article reproduction is allowed, however citation the source ".