Application time of chemical thinning with metamitron in 'Sensação' peach trees 1

[...]this practice requires qualified workforce and must be carried out in a short period. [...]it hinders its execution and, consequently, increases production costs (McArtney & Obermiller, 2014; Simoes et al., 2013). Metamitron acts on Photosystem II by inhibiting electron transport its effect...

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Bibliographic Details
Published in:Revista Ceres 2020-01, Vol.67 (1), p.16-22
Main Authors: Farias, Roseli de Mello, Barreto, Caroline Farias, Zandoná, Renan Ricardo, Martins, Carlos Roberto, De Mello-Farias, Paulo Celso
Format: Article
Language:English
Subjects:
Abscission
Agricultural production
Carbon dioxide
Carbon dioxide fixation
Chloroplasts
Cold
Electron transport
Experiments
Food quality
Fruit trees
Fruits
NADP
Photosynthesis
Photosystem II
Production costs
Thinning
Trees
Weather
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Summary:[...]this practice requires qualified workforce and must be carried out in a short period. [...]it hinders its execution and, consequently, increases production costs (McArtney & Obermiller, 2014; Simoes et al., 2013). Metamitron acts on Photosystem II by inhibiting electron transport its effect occurs because it acts on Photosystem II and inhibits electron transport on the chloroplast of plastoquinone QA to QB. [...]it decreases production of ATP, NADPH and CO2 fixation, which leads to photosynthesis inhibition (Basak, 2011; Stern, 2014). According to Pavanello & Ayub (2012), the ideal chemical thinner is the one that can lead to partial fruit abscission soon after a single application. Several studies have shown satisfactory results of metamitron as a chemical thinner in apple tree cultures (Petri et al., 2016; Goulart et al., 2017; Gabardo et al., 2017a), even though there is no information on peach tree cultures in Brazil. [...]this study aimed at evaluating the thinning effect of metamitron on peach trees at different periods of time after bloom in the south of Brazil.
ISSN:0034-737X
2177-3491