Evaluation of mandarin hybrids grafted on 'Rangpur' lime in the Coastal Tablelands, Brazil

Ribeiro, Lucas de Oliveira; Girardi, Eduardo Augusto; Carvalho, H. W. L. de; Bastos, D. C.; Filho, W. dos S. Soares; Passos, O. S.

doi:10.1590/0100-29452020008

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…18,20,41 However, similar to the North states, the narrow temperature range in the Northeast region does not favor fruit skin pigmentation. 53 The states of Goiás, Mato Grosso do Sul, Mato Grosso and Distrito Federal, which constitute the Central-West region, exhibited relatively cooler temperatures, with averages below 25 °C, during…”

Section: Resultsmentioning

confidence: 99%

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Climate zoning: identifying suitable regions for the occurrence of Alternaria Brown spot in tangerine trees in Brazil

Aparecido,

Torsoni,

Lima

et al. 2023

Pest Management Science

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BACKGROUNDBrazilian citrus farming has been migrating to nontraditional citrus‐growing regions, which can be considered a challenge for citrus growers, as not all these areas are suitable for tangerine cultivation. Thus, the mapping of regions exhibiting favorable climatic conditions for Alternaria brown spot has become crucial in the selection of appropriate locations for the establishment of new orchards. This mapping enables the implementation of an avoidance strategy, which entails steering clear of areas where the disease is prevalent, aligning with fundamental principles of disease control.RESULTSThus, this study seeks to zone areas with high and low climatic favorability for the occurrence of Alternaria brown spot in tangerine trees in Brazil. Historical climate data series from the NASA‐POWER database were used for all municipalities in Brazil. Agrometeorological variables used to determine the development of Alternaria brown spot were average monthly air temperature (Tmean) and duration of leaf wetness period (LWD). Areas were considered unsuitable climatically when Tmean was <17 °C or >33 °C, relatively suitable when Tmean was between 13 °C and 33 °C and LWD <10%, and climatically suitable when Tmean was between 13 °C and 33 °C and LWD >10%. The states of Paraná, Santa Catarina and Rio Grande do Sul showed greater thermal amplitude within months and throughout the year. The southern region of the country has harsher winters, with minimum temperatures below 15 °C, which is unfavorable for the disease incidence.CONCLUSIONThe states with the greatest favorability for Alternaria brown spot were Paraná, Santa Catarina, and Rio Grande do Sul, mainly from May to September. Rio Grande do Sul was the state in this region that showed the greatest favorability, as a consequence of leaf wetness exceeding 10 h. The main tangerine‐producing regions in Brazil, including the southern part of Minas Gerais, the state of São Paulo and the metropolitan region of Porto Alegre, were mostly classified as relatively favorable areas for the occurrence of Alternaria brown spot. It is recommended that when establishing new tangerine orchards, regions with lower favorability for the occurrence of Alternaria brown spot, such as the North and Central‐West regions of Brazil, particularly the states of Amazonas, Pará and Mato Grosso, should be selected. © 2023 Society of Chemical Industry.

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Section: Resultsmentioning

confidence: 99%

“…When the air temperature exceeds 33 °C, which is outside the optimal range for spore germination, the conditions become unfavorable for disease spread 18,20,41 . However, similar to the North states, the narrow temperature range in the Northeast region does not favor fruit skin pigmentation 53 …”

Section: Resultsmentioning

confidence: 99%

Climate zoning: identifying suitable regions for the occurrence of Alternaria Brown spot in tangerine trees in Brazil

Aparecido,

Torsoni,

Lima

et al. 2023

Pest Management Science

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Initial production and fruit quality of scion-rootstock combinations in orange trees in Amazonas

et al. 2021

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The cultivation of orange trees in Amazonas, Brazil relies predominantly on grafted plants combining ‘Pera’ scion and ‘Rangpur’ lime rootstock. Alternative rootstocks better adapted to the conditions of the region have not been investigated. Therefore, the objective of this research was to test seven rootstocks for the production of high-quality oranges under the typical conditions of the Amazon. Citrus production was evaluated from May to August between 2017 and 2019, based on the variables of cumulative yield, yield efficiency, and crop-yield index over the study period. The fruit physicochemical quality was evaluated by quantification of total soluble solids, total titratable acidity, ratio, juice percentage, and technological index. ‘Indio,’ ‘BRS Bravo’, and ‘Riverside’ genotypes combined with ‘Pera’/CNPMF scion had the highest yield and good fruit quality. They are potentially the most suitable combinations to grow sweet oranges in the Amazon.

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Evaluation of mandarin hybrids grafted on 'Rangpur' lime in the Coastal Tablelands, Brazil

Cited by 2 publications

References 23 publications

Climate zoning: identifying suitable regions for the occurrence of Alternaria Brown spot in tangerine trees in Brazil

Climate zoning: identifying suitable regions for the occurrence of Alternaria Brown spot in tangerine trees in Brazil

Initial production and fruit quality of scion-rootstock combinations in orange trees in Amazonas

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