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| Benati,Jorge Atílio; Nava,Gilberto; Mayer,Newton Alex. |
| Abstract The objective of this research was to evaluate the technical feasibility of SPAD index in the diagnosis of N status in ‘Esmeralda’ peach. The field trial, with five N rates applied to the soil (0, 40, 80, 120 and 160 kg ha-1 of N as urea form) was conducted in a randomized block design with four replications. During the years 2014, 2015, 2016 and 2017, SPAD readings were carried out with a Minolta SPAD-502 chlorophyll meter, in the leaf middle part, in 40 leaves per plot. The leaf N content determination was performed in CHN-S Elemental Analyzer. SPAD index and leaf N content increased in a linear way in response to increasing N rates applied in soil. There was a positive linear correlation between SPAD index and N concentration in leaves (0.652;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Prunus persica; Nitrogen fertilization; Chlorophyll meter; Leaf mineral composition. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452021000103002 |
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| Barreto,Caroline Farias; Antunes,Luis Eduardo Correa; Ferreira,Letícia Vanni; Navroski,Renan; Benati,Jorge Atílio; Pereira,José Francisco Martins. |
| Abstract In cultivation of peaches, thinning is conventionally performed on fruits by hand, and needs to be done in a short time and with specialized labor, which increases the operational costs of this practice. Mechanical thinning can be an alternative to manual fruit thinning. Thus, the objective of this study was to evaluate the effect of mechanical flower thinning with different equipment in advanced peach orchard. The experiment was conducted in 2016 and 2017, combining advanced selections of peach trees and thinning methods. The evaluated variables were percentage of flowers thinning, thinning time, fruit number per plant, plant production, estimated yield, average fruit mass and fruit diameter class. Flower mechanic thinning alters the yield index... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Prunus persica; Flower removal; Effective fruiting; Thinning cost. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000600201 |
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| Barreto,Caroline Farias; Antunes,Luis Eduardo Correa; Ferreira,Letícia Vanni; Navroski,Renan; Benati,Jorge Atílio; Nava,Gilberto. |
| Abstract Among the factors that affect peach productivity is the proper nutrition of plants, being nitrogen (N) one of the main nutrients for the crop. Thus, the objective of the current study was to evaluate the effect of nitrogen fertilization on macronutrient leaf contents, plant development and production of different genotypes of peach trees cultivated at high planting density, seeking to recommend the most appropriate concentration. The experiment was conducted between 2016 and 2018 using peach selections ‘Cascata 1513’ and ‘Cascata 1067’ and with nitrogen fertilization concentrations (0, 60, 120 and 180 kg ha-1 of N). Pruning mass, trunk diameter, number of fruits per plant, average fruit mass, yield per plant, yield per hectare and leaf... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vegetative growth; Number of fruits; Prunus persica; Leaf content. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000603001 |
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