Tree growth, production and huanglongbing incidence of sweet orange varieties using different nursery tree standards

Pacheco, Camilla de Andrade; Moreira, Alécio Souza; Girardi, Eduardo Augusto; Bassanezi, R. B.; Stuchi, Eduardo Sanches

doi:10.1016/j.scienta.2021.110023

Cited by 2 publications

(2 citation statements)

References 28 publications

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“…Its industrial processing generates several underexploited by-products that are generally disposed into the environment or used as animal feed. On average, 90% of Brazilian orange juice production is exported, with the European Union and the United States among the largest buyers of Brazilian orange juice, coming mainly from the State of São Paulo, which accounts for 60% of the Brazilian planted area and 74.5% of the total national production [ 1 , 2 , 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Microbial natural bioactive formulations in citrus development

Diering

Ulrich

Scapini

et al. 2022

Biotechnology Reports

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Section: Introductionmentioning

confidence: 99%

Microbial natural bioactive formulations in citrus development

Diering

Ulrich

Scapini

et al. 2022

Biotechnology Reports

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“…A detailed economic analysis considering the entire lifespan of the sweet orange orchard, about 15 to 20 years, should be provided to support grower decisions beyond the potential benefit for the land use and less dependence on the labor. Additional innovations such as less expensive types of nursery trees will be likely necessary to decrease investment in high-density orchards [94]. Finally, the performance of the diploid Swingle citrumelo is worthy of mention, because it ranked just next to IAC 1710 citrandarin regarding the productivity while the tree size and the fruit quality were more favorable, and HLB incidence was not different from that of trees on the dwarfing selection.…”

Section: Intensively Managed Improved Rootstocks Increase the Efficiency Of Land Use In Citriculturementioning

confidence: 99%

The Perfect Match: Adjusting High Tree Density to Rootstock Vigor for Improving Cropping and Land Use Efficiency of Sweet Orange

et al. 2021

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The rise in the productivity of sweet orange in Brazil has been related to the use of superior rootstocks and higher tree density, among other factors. In order to investigate whether the cropping system and the land use efficiency would benefit from more intensive cultivation, the performance of Valencia sweet orange was evaluated over nine years on four rootstocks, which induced contrasting vigor, at 513, 696 and 1000 trees·ha−1. Agronomic Institute of Campinas (IAC) 1697 and IAC 1710 citrandarins, and diploid and allotetraploid (4×) Swingle citrumelos were classified as semi-dwarfing, super-standard, standard, and dwarfing rootstocks, respectively. The fruit yield per tree was decreased at higher tree densities, notably for more vigorous rootstocks. Conversely, the cumulative productivity was increased over the evaluation period by 27% at 1000 trees·ha−1, irrespective of the rootstock, and the most vigorous rootstock resulted in 2.5 times higher production than the dwarfing one on average. Most fruit quality parameters were seldom influenced by the tree density, while the rootstock was a decisive factor in improving the quality and the soluble solids content. Dwarfing rootstocks allowed for harvesting 17% more fruit per minute by manual pickers. Because the tree row volume per area is lower with such rootstocks, even at higher tree density, spray volume can be reduced, although appropriate equipment should be developed for better spray coverage on smaller trees. Nine years after planting under strict vector control, the cumulative incidence of huanglongbing-symptomatic trees on IAC 1710 was double that on Swingle 4×. Taken together, the results suggested that the land use efficiency in the citrus industry can be further improved by planting vigorous rootstocks at moderate to high tree densities. Nevertheless, obtaining highly productive semi-dwarfing and dwarfing rootstocks is the sine qua non for making high-density pedestrian sweet orange orchards more profitable.

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Tree growth, production and huanglongbing incidence of sweet orange varieties using different nursery tree standards

Cited by 2 publications

References 28 publications

Microbial natural bioactive formulations in citrus development

Microbial natural bioactive formulations in citrus development

The Perfect Match: Adjusting High Tree Density to Rootstock Vigor for Improving Cropping and Land Use Efficiency of Sweet Orange

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