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Organic acids allied with paclobutrazol modify mango tree ‘Keitt’ flowering

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posted on 27.07.2022, 08:19 authored by Luan dos Santos Silva, Ítalo Herbert Lucena Cavalcante, Jenilton Gomes da Cunha, Jackson Teixeira Lobo, Daniel Almeida Carreiro, Vespasiano Borges de Paiva Neto

Abstract The objective of this study was to evaluate the effectiveness of fulvic acids and free amino acids on paclobutrazol in the flowering of mango ‘Keitt’ cultivated in the semi-arid region. The experiment was performed from 2017 to 2018 simultaneously in two orchards with the same plants and management characteristics, located in Cabrobó, State of Pernambuco, Brazil. The experimental design was randomized blocks with four treatments and five replications of four trees. The treatments were: T1: paclobutrazol + water (control); T2: paclobutrazol + fulvic acids; T3: paclobutrazol + amino acids; T4: paclobutrazol + fulvic acids + amino acids. Applying fulvic acids plus paclobutrazol increased gas exchange efficiency, favoring flowering and fruiting. In contrast, amino acids alone or with fulvic acids decreased the flowering efficiency.

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