Organomineral Fertilizer in Pineapple Cultivars in the Acclimatization Stage of Seedlings Produced “In vitro”
Luciana Freitas de Medeiros Mendonça
Federal Institute of Ceará (IFCE), Ceará, CE, Brasil.
Vander Mendonça
Federal Rural University of the Semi-Arid (UFERSA), Mossoró, RN, Brazil.
Eduardo Castro Pereira
Federal Rural University of the Semi-Arid (UFERSA), Mossoró, RN, Brazil.
Grazianny Andrade Leite
Federal Rural University of Pernambuco (UFRPE), Pernambuco, PE, Brasil.
Toni Halan da Silva Irineu
Federal Rural University of the Semi-Arid (UFERSA), Mossoró, RN, Brazil.
Luana Mendes de Oliveira *
Federal Rural University of the Semi-Arid (UFERSA), Mossoró, RN, Brazil.
Elias Ariel de Moura
Federal Rural University of the Semi-Arid (UFERSA), Mossoró, RN, Brazil.
Wilma Freitas Celedônio
Federal University of Paraiba (UFPB), Areia, PB, Brazil.
Alex Danilo Monte de Andrade
Federal Rural University of the Semi-Arid (UFERSA), Mossoró, RN, Brazil.
*Author to whom correspondence should be addressed.
Abstract
This study aimed at evaluating the effect of organomineral fertilizer doses on the growth and nutrition of seedlings of pineapple cultivars during the acclimatization stage. The trial was carried out in the University Federal Rural do Semi-Árido under greenhouse conditions, at Mossoró – Rio Grande do Norte, from July 2013 to April 2014. The trial was carried out in randomized blocks design in a 2x5 factorial scheme, with 2 pineapple cultivars (Imperial and Vitoria) and 5 doses of organomineral fertilizer (0; 2.5; 5; 7.5 and 10 g), amounting 10 treatments with 4 replications and 5 seedlings per plot. The qualitative data means were compared by Scott-Knott test at 5% of probability, and the quantitative data were submitted to regression analysis and the mathematical models were adjusted with a probability for the t-test of p<0.05 for the equation parameters. The cultivars reached appropriate growth for transferring to the field after 210 days. The doses of organomineral fertilizer that increased the biometrical characteristics were 10 g and 5 g for both ‘Vitoria’ and ‘Imperial’ cultivars, respectively.
Keywords: Ananas comosus L., fruits, phosphorus, propagation