Ecophysiological responses of ´Turiaçu´ pineapple plants at vegetative and reproductive stages to soil fertilization and crop location

Autor: Fabrício de Oliveira Reis, Letícia Moura Ramos, José Ribamar Gusmão Araujo, Fábio Afonso Mazzei Moura de Assis Figueiredo, Tiago Massi Ferraz, Ayla Kelly Soares Assunção, Augusto César Vieira Neves Junior
Jazyk: English<br />Portuguese
Rok vydání: 2023
Předmět:
Zdroj: Ciência Rural, Vol 54, Iss 4 (2023)
Druh dokumentu: article
ISSN: 1678-4596
0103-8478
DOI: 10.1590/0103-8478cr20220592
Popis: ABSTRACT: Pineapple is a tropical fruit with high demand by the fruit market in Brazil. Fruits of the cultivar ´Turiaçu` stans out in local consumer markets due to its excellent quality. The objective of this work was to evaluate ecophysiological responses of ´Turiaçu` pineapple plants at the vegetative and reproductive stages to soil fertilization and crop location, and their effects in fruit yield. The study was conducted in the cities of São Luís and Turiaçu, MA, Brazil. Plants under mineral and organic fertilization in two locations, São Luís and Turiaçu, and in two seasons, dry and rainy season, were evaluated during dry and rainy seasons. Chlorophyll index, photochemical efficiency, gas exchange, and fruit yield were evaluated. The pineapple plants presented decrease in the photosynthetic activity, at both developmental stages and in both seasons, when grown in São Luís. The CO2 photosynthetic assimilation decreased. The PSI and PSII activity, according with photosynthetic index, was more sensitive at the reproductive than at the vegetative stage. The organic fertilization was not appropriate for the ´Turiaçu` pineapple crops, regardless of the crop location. The fruit yields were 54.4% and 57.9% lower in São Luís, under mineral and organic fertilization, respectively. Thus, the ecophysiology of ´Turiaçu` pineapple was more affected by water availability than by soil fertility in the municipality of Turiaçu.
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