Publications

@article{Amorim2021,

title = {Partial rootzone drying and regulated deficit irrigation can be used as water-saving strategies without compromising fruit yield and quality in tropically grown sweet orange},

author = {Maurício Silva Amorim and Iumi Silva Toyosumi and Wilson Amorim Lopes and Luciana Rodrigues Camillo and Laiane Nascimento Ferreira and Dilson Souza Rocha Junior and Walter Santos Soares Filho and Abelmon Silva Gesteira and Marcio Gilberto Cardoso Costa and Maurício Antônio Coelho Filho},

url = {https://www.tandfonline.com/doi/abs/10.1080/14620316.2021.1900750},

doi = {10.1080/14620316.2021.1900750},

issn = {14620316},

year  = {2021},

date = {2021-01-01},

journal = {https://doi.org/10.1080/14620316.2021.1900750},

volume = {96},

issue = {5},

pages = {663-672},

publisher = {Taylor & Francis},

abstract = {We examined the effects of partial rootzone drying (PRD) and regulated deficit irrigation (RDI) on some physiological and agronomical traits in tropically grown sweet orange (Citrus sinensis (L.) O...},

keywords = {Citrus, Fruit quality, Gene expression, irrigation, water deficit, Yield},

pubstate = {published},

tppubtype = {article}

}

@article{Costa2021,

title = {Less is more: A hard way to get potential dwarfing hybrid rootstocks for valencia sweet orange},

author = {Danilo Pereira Costa and Eduardo Sanches Stuchi and Eduardo Augusto Girardi and Alécio Souza Moreira and Abelmon Da Silva Gesteira and Mauricio Antonio Coelho Filho and Carlos Alberto Da Silva Ledo and André Luiz Vanucci Da Silva and Helton Carlos De Leão and Orlando Sampaio Passos and Walter Dos Santos Soares Filho},

url = {https://www.mdpi.com/2077-0472/11/4/354/htm https://www.mdpi.com/2077-0472/11/4/354},

doi = {10.3390/AGRICULTURE11040354/S1},

issn = {20770472},

year  = {2021},

date = {2021-01-01},

journal = {Agriculture (Switzerland)},

volume = {11},

issue = {4},

pages = {354},

publisher = {MDPI AG},

abstract = {As in several fruit crops, citrus trees with decreased size allow for a higher planting density, which may lead to higher productivity and facilitate operations such as harvesting and spraying. The use of dwarfing rootstocks is one of the most feasible methods for tree size control, but few commercial varieties are available to date. In this work, the long-term performance of Valencia sweet orange grafted onto 51 hybrid citrus rootstocks was evaluated in rainfed cultivation at 6.0 m × 2.5 m tree spacing in Northern São Paulo State, Brazil. About a third of the evaluated hybrids were classified as dwarfing and semi-dwarfing rootstocks, that is, respectively inducing a relative canopy volume of <40% and 40-60% compared with the standard rootstock, the Rangpur lime Santa Cruz selection. The production efficiency and soluble solids concentration were conversely related to the canopy volume. Three citrandarins of Sunki mandarin (TSKC) × Flying Dragon trifoliate orange (TRFD) were grouped within the most productive dwarfing rootstocks. Other hybrids that expressively decreased tree size were mainly sensitive to drought; therefore, the mean fruit yield was low, indicating the need for irrigation, albeit fruit quality was high. Estimated productivity on the selected TSKC × TRFD rootstocks would double to an average of 40 t·ha−1·year−1 if tree spacing was adjusted to the smaller tree size. Although the HTR-208 citrandarin and the LCR × CTSW-009 citrumelimonia were as vigorous as the Santa Cruz Rangpur lime, they induced an outstanding fruit yield due to their highest tolerance to drought and, hence, can be considered for rainfed cultivation at wider tree spacing.},

keywords = {Citrus spp, Drought tolerance, Fruit quality, Fruit yield, Graft compatibility, Poncirus trifoliata, Tree size control},

pubstate = {published},

tppubtype = {article}

}

@article{Fadel2021,

title = {Mid-season sweet oranges for fresh and processing markets in Brazil},

author = {André Luiz Fadel and Horst Bremer Neto and Marina Maitto Caputo and Eduardo Sanches Stuchi and Francisco De Assis Alves Mourão Filho},

url = {https://www.cambridge.org/core/journals/experimental-agriculture/article/abs/midseason-sweet-oranges-for-fresh-and-processing-markets-in-brazil/269162097B19628C448D83F1E852C074},

doi = {10.1017/S0014479721000016},

issn = {0014-4797},

year  = {2021},

date = {2021-01-01},

journal = {Experimental Agriculture},

volume = {57},

issue = {1},

pages = {15-32},

publisher = {Cambridge University Press},

abstract = {Pera sweet orange (Citrus sinensis L. Osbeck) is the most important mid-season sweet orange cultivar in Brazil, not only because of its desirable fruit quality for both juice processing and the fresh fruit market, but also because there is a lack of adequate mid-season alternative sweet orange cultivars. This study aimed to evaluate the horticultural performance of other sweet oranges in an attempt to identify similar or superior selections to the standard cultivar, Pera IAC sweet orange. Seventeen sweet oranges selections, including the standard Pera IAC, were budded on Sunki mandarin [C. sunki (Hayata) hort. ex Tanaka]. The experiment was planted in 2007, using 12-month-old nursery trees, with 6.5 × 2.5 m spacing in the Southern region of São Paulo state, Brazil. The experimental orchard was maintained with standard commercial management practices, and without supplementary irrigation. Data collection started three years after planting and was carried out until seven years after the experiment had been installed. Vegetative growth, plant yield, fruit drop, fruit quality, and fruit maturation regressions were assessed. Averages of the alternative selections were compared with those of the standard cultivar by Dunnett test. Performance indexes were calculated in order to identify potential superior selections for the fresh fruit market and for juice processing. Results indicated significant differences among the selections evaluated when compared with the standard cultivar, suggesting better alternatives to be exploited. Five selections (Biondo, Finike, Pera Alexandre Maróstica, Seleta Rio, and Vaccaro Blood) offered superior performance in terms of attributes required for the fresh fruit market, while one selection (Pera Alexandre Maróstica) was superior for juice processing traits. These alternatives to Pera IAC represent an opportunity for more efficient and productive scions with higher fruit quality, and with a slight shift within the mid-season harvest time of sweet oranges in Brazil.},

keywords = {Accumulated degree days, Fruit quality, Yield},

pubstate = {published},

tppubtype = {article}

}

@article{Kirinus2019,

title = {Agronomic performance of 'Valência' orange combined with 13 rootstocks in the state of Rio Grande do Sul, Brazil},

author = {Marines Batalha Moreno Kirinus and Roberto Pedroso Oliveira and Pricila Santos Silva and Caroline Farias Barreto and Marcelo Barbosa Malgarim and Walter Santos Soares Filho},

url = {http://www.scielo.br/j/pab/a/4WkkddvbqKLSj6yTF8S9hDF/?lang=en},

doi = {10.1590/S1678-3921.PAB2019.V54.00461},

issn = {0100-204X},

year  = {2019},

date = {2019-01-01},

journal = {Pesquisa Agropecuária Brasileira},

volume = {54},

publisher = {Embrapa Secretaria de Pesquisa e Desenvolvimento, Pesquisa Agropecuária Brasileira},

abstract = {Abstract: The objective of this work was to evaluate the agronomic performance of 'Valência' sweet orange (Citrus sinensis) tree, in combination with 13 rootstocks cultivated in soil and climate conditions of the Brazilian state of Rio Grande do Sul. The following agronomic variables were evaluated: scion height and volume, plant production, production efficiency, productivity, fruit diameter, fruit mass, peel mass, juice yield, soluble solids content, titratable acidity, soluble solids:acidity ratio, ascorbic acid, peel color, antioxidant capacity, and phenolic compounds. A randomized complete block experimental design was used, with three replicates and nine plants per plot, in a two-factor arrangement (13 rootstocks and the 2015 and 2016 harvests). The following rootstocks stood out: TSKC × TRDP-023 for its juice yield (54.0 and 51.7%), soluble solids:acidity ratio (8.66 and 6.99), and ascorbic acid (49.3 and 51 mg 100 g-1); and the citrandarin 'San Diego', for its higher phenolic-compound content (106.4 and 74.9 100 g-1 gallic acid), coloration (76.2 and 75.9 hº), and ascorbic acid (42.2 and 44.7 mg 100 g-1). The TSKC × TRDP-026 and TSKC × CTQT1434-004 rootstocks induce canopy formation and productive precocity in 'Valência' orange trees grown in the southern region of the state of Rio Grande do Sul state, in the first few years of growth.},

keywords = {bioactive compounds, Citrus sinensis, Fruit quality},

pubstate = {published},

tppubtype = {article}

}

@article{Girardi2017,

title = {Sunki mandarin and Swingle citrumelo as rootstocks for rain-fed cultivation of late-season sweet orange selections in northern São Paulo state, Brazil},

author = {Eduardo Augusto Girardi and Thales Sandoval Cerqueira and Tatiana Eugenia Cantuarias-Avilés and Simone Rodrigues Silva and Eduardo Sanches Stuchi},

url = {http://www.scielo.br/j/brag/a/vdT3V6Pp7MQFSGgHNZyDZrH/?lang=en},

doi = {10.1590/1678-4499.2016.350},

issn = {0006-8705},

year  = {2017},

date = {2017-01-01},

journal = {Bragantia},

volume = {76},

issue = {4},

pages = {501-511},

publisher = {Instituto Agronômico de Campinas},

abstract = {ABSTRACT In Brazilian regions affected by the citrus sudden death disease, sweet orange cultivation depends on the use of resistant rootstocks. Rangpur lime was mainly replaced by Swingle citrumelo and Sunki mandarin rootstocks, more drought-sensitive ones. The diversification of scion selections is also desirable aiming at the increasing demand for not from concentrate orange juice (NFC) that requires high-quality fruits. In this work, we evaluated the performance of 6 selections of Valencia (IAC, Dom João, Late Burjasot IVIA 35-2, Rhode Red SRA 360, Temprana IVIA 25 and Campbell) and Natal IAC sweet oranges grafted onto Swingle citrumelo and Sunki mandarin. The planting occurred in 2001 under rain-fed cultivation in Bebedouro, northern São Paulo state, Brazil. The outline was made through randomized blocks in a 7 × 2 factorial design (selections × rootstock), with 4 replications and 2 trees in unit. Both rootstocks performed well in the region. Sunki mandarin rootstock induced greater tree size and production per plant to the scion selections, 38 and 21%, respectively, plus higher precocity of production compared to Swingle citrumelo. The later determined a greater productive efficiency, as well as a greater percentage of juice in general, albeit with lower concentrations of soluble solids and acidity. Natal IAC, Valencia IAC and Rhode Red Valencia selections presented a higher accumulated production, on average, 218.6 kg∙plant−1 (2004 – 2008), and a higher productive efficiency (kg fruit∙m−3 of canopy) due to their smaller tree size. All assessed selections produced fruits with high soluble solids content that were suitable for juice processing.},

keywords = {[C. paradisi × Poncirus trifoliata], [C. paradisi x poncirus trifoliata], Citrus sinensis. C. sunki, Drought tolerance, Fruit quality, production},

pubstate = {published},

tppubtype = {article}

}

@article{Mattos2017,

title = {Soil boron fertilization: The role of nutrient sources and rootstocks in citrus production},

author = {Dirceu Mattos and Franz W. R. Hippler and Rodrigo M. Boaretto and Eduardo S. Stuchi and José A. Quaggio},

doi = {10.1016/S2095-3119(16)61492-2},

issn = {2095-3119},

year  = {2017},

date = {2017-01-01},

journal = {Journal of Integrative Agriculture},

volume = {16},

issue = {7},

pages = {1609-1616},

publisher = {Elsevier},

abstract = {Boron (B) is a key element for citrus production, especially in tropical regions, where the nutrient availability is commonly low in the soil. In addition, information about doses, fertilizer sources, methods of application, and particularly, differential nutrient demand of scion/rootstock combinations are required for efficient fertilization of commercial groves. In a non-irrigated sweet orange orchard (cv. Natal), grafted onto Rangpur lime, Swingle citrumelo or Sunki mandarin, we studied the application of two sources of B: boric acid (17% B, soluble in water) and ulexite (12% B, partially soluble in water) at four levels of supply (control without B, and soil application of 2, 4 and 6 kg ha−1 yr−1 of B). The experiment was carried out for three years (2004–2006). Boron availability in the soil and concentration in the leaves, as well as the fruit yield and quality of trees were evaluated. Soil B extracted with hot water and total leaf B positively correlated with doses of the nutrient applied to the trees. Levels of B in the soil and in the leaves did not vary with fertilizer sources. Fruit yield of trees grafted onto Rangpur lime and Swingle citrumelo was more responsive to B doses than those grafted onto Sunki mandarin. The maximum fruit yield of trees grafted onto Swingle was obtained with 3.2 kg ha−1 yr−1 of B, and leaf B level of 280 mg kg−1 that point out to a highest demand for B when this combination was compared with other rootstocks. Furthermore, fertilization with B did not affect the quality of fruits, but correlated with B and potassium (K) concentrations in the leaves. These results also support that the current recommendations for levels of B in leaves should be revisited.},

keywords = {boric acid, Citrus, fertilization via soil, Fruit quality, leaf analysis, ulexite},

pubstate = {published},

tppubtype = {article}

}