Chemical Soil Attributes, Accumulation of Foliar Macronutrients and Productivity of the 'Vitória' Pineapple Plant Fertilized with Urea and Chicken Manure
Francisco de Assis Pereira Leonardo
State University of Piauí (UESPI), Bom Jesus, PI, Brazil.
Walter Esfrain Pereira
Federal University of Paraíba (UFPB), Areia, PB, Brazil.
Thiago Jardelino Dias
Federal University of Paraíba (UFPB), Areia, PB, Brazil.
Joana Gomes de Moura
Federal University of Paraíba (UFPB), Areia, PB, Brazil.
Mário Leno Martins Véras *
Federal University of Viçosa (UFV), Viçosa, MG, Brazil.
Ygor Henrique Leal
Federal University of Paraíba (UFPB), Areia, PB, Brazil.
*Author to whom correspondence should be addressed.
Abstract
The pineapple plant cultivar 'Vitória' is resistant to Fusarium and it presents similar characteristics to the cultivars 'Pérola' and 'Smoot Cayene'. However, the expansion of this new cultivar depends on the development of research on several aspects, among them, fertilization. In this context, the experiment was carried out with the objective of evaluating soil fertility, foliar macronutrient contents and productivity in 'Vitória' pineapple plant in function of nitrogen fertilization with urea and chicken manure. The experiment was conducted under randomized block design, with four replications. Treatments consisted of five doses of N, in two sources of organic fertilization (chicken manure ) and mineral (urea), totaling nine combinations generated through the Central Composite Matrix of Box: T1 , 44 and 2.91; T 2 , 152 and 0; T 3 , 0 and 10; T 4, 44 and 17.1; T 5 , 260 and 2.91; T6 , 152 and 10; T7 , 152 and 20; T8 , 304 and 10; and T9, 260 and 17.1 g plant-1. At 6 months after planting the chicken manure decreased H + A1, Mg and CEC levels, and at 23 months after planting increased soil P, SB e CEC levels. In the two seasons, Urea has reduced pH and it reduced Mg, SB and CEC contents at six months after planting. Doses of urea between 10 and 12 g plant-1 are recommended in order to maximize the productivity of the pineapple plant.
Keywords: Ananas comosus, plant nutrition, soil fertility