Influence of pruning and potassium nitrate and potassium tiosulphate application on the flowering characteristics of mango (Mangifera indica L.) cultivars Irwin and Tommy Atkins in the Maracaibo plain, Venezuela.
Year: 2009
Type: article
Abstract: The Maracaibo plain has acceptable agroecological conditions for mango production. In this study, the influence of pruning\nand both potassium nitrate and potassium tiosulphate applications were evaluated on flowering characteristics of the\ncultivars Irwin and Tommy Atkins, which are produced in this region. The research was conducted on the Maracaibo plain,\nat the Centro Frutícola (CENFRUZU), Mara County, Zulia State, Venezuela. A factorial design was used, with two\ntreatments of pruning at two levels (with and without pruning), two flowering inductor levels (potassium nitrate KNO3 6%\nand potassium tiosulphate TSK 1%), plus a control treatment, without neither pruning nor promotors. The treatments were\nlocated at random using two cultivars: Irwin and Tommy Atkins with four plants per treatment. The experiment was\nrepeated during two productive cycles (2003-2004 and 2004-2005). For each cycle, two different experiments were carried\nout considering the treatment application date: early and late induction, for a total of four experiments. Panicle length and\nwidth, panicle number per plant, number of hermaphrodite and masculine flowers, and hermaphrodite and masculine\nflowers ratio were evaluated. On the Irwin cultivar, the panicles number increased from 550% to 600% with the application\nof potassium nitrate, during early induction and 200% during the late one. On the Tommy Atkins cultivar, the effect of\npotassium nitrate on panicles number was lower. The hermaphrodite-masculine flowers ratio increased with the potassium\nnitrate application on the Irwin cultivar during early induction. Panicle size decreased when potassium tiosulphate was\napplied in combination with pruning in both cultivars and induction dates. These results showed that potassium nitrate\ncombined with pruning on the Irwin cultivar produced the best effect on floral characteristics, when compared to the\ncontrol.
Source: TSpace (University of Toronto)
Authors: Osmar Quijada, Baudilio Herrero, Rosa González, Ángel Casanova, Ramón Kuri Camacho
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W143987207