Absorption of macronutrients by cassava in different harvest dates and dosages of nitrogen Report as inadecuate




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José Maria Arcanjo Alves ; Sandra Catia Pereira Uchôa ; Natália Trajano de Oliveira ; José de Anchieta Alves de Albuquerque ;Revista Ciência Agronômica 2014, 45 4

Author: Nádia Souza dos Santos

Source: http://www.redalyc.org/


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Revista Ciência Agronômica ISSN: 0045-6888 ccarev@ufc.br Universidade Federal do Ceará Brasil Souza dos Santos, Nádia; Arcanjo Alves, José Maria; Pereira Uchôa, Sandra Catia; Trajano de Oliveira, Natália; de Anchieta Alves de Albuquerque, José Absorption of macronutrients by cassava in different harvest dates and dosages of nitrogen Revista Ciência Agronômica, vol.
45, núm.
4, octubre-diciembre, 2014, pp.
633-640 Universidade Federal do Ceará Ceará, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=195331351001 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative Revista Ciência Agronômica, v.
45, n.
4, p.
633-640, out-dez, 2014 Centro de Ciências Agrárias - Universidade Federal do Ceará, Fortaleza, CE www.ccarevista.ufc.br Artigo Científico ISSN 1806-6690 Absorption of macronutrients by cassava in different harvest dates and dosages of nitrogen1 Absorção de macronutrientes pela mandioca em diferentes épocas de colheita e doses de nitrogênio Nádia Souza dos Santos2*, José Maria Arcanjo Alves3, Sandra Catia Pereira Uchôa4, Natália Trajano de Oliveira2 e José de Anchieta Alves de Albuquerque3 ABSTRACT - A field experiment was carried out in 2010-2011 crop years in the experimental area of the Centro de Ciências Agrárias of the Universidade Federal de Roraima, in Boa Vista, Roraima, Brazil.
This study aimed to evaluate the effect of nitrogen availability on the concentrations of N, P, K, Ca, Mg and S in cassava, cultivar Aciolina, in different harvest times.
A randomized block design was used in split-plot, with four replications.
Dosages of N in cover were applied randomly on the plots (0, 30, 60, 150 and 330 kg ha-1), and in the subplot the harvest dates 120, 150, 180, 210, 240, 270 and 300 da...





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