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Dania Rivera-Ocasio
Agro-Environmental Sciences Department, University of Puerto Rico-Mayagüez, Box 9000, Mayagüez, PR 00681, USA

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Journal article
Published: 18 May 2020 in Horticulturae
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Sweet oranges in Puerto Rico and other citrus-producing areas in the world have been greatly affected by the Huanglongbing disease (HLB). Historically, most of Puerto Rico’s citrus production has been located from 0–600 m above sea level, where fruit acquire a desirable color and flavor due to climatic conditions. However, higher populations of the disease vector Diaphorina citri Kuwayama have been reported at these elevations in Puerto Rico. Although only 6.4% of the land area is located above 600 m, it is composed mainly of environmentally sensitive or non-arable land where Inceptisols are the dominant soil order. For that reason, ‘Marr’s Early’ and ‘Pera’ sweet orange (Citrus sinensis) scions grafted on ‘Carrizo’, ‘HRS 802’, and ‘HRS 812’ rootstocks were planted in Alonso clay series Inceptisol (Oxic Humudepts) at 649 m in 2010. Tree growth parameters (height, diameter, canopy volume) and yield efficiency were measured. Fruit quality was determined from juice content (%), total soluble solids [°Brix], and pH. Leaf tissue analyses showed an optimum range for Ca, Mg, Na, P, B, Cu, and Zn, an indicator of tree health. A few were high (i.e., N and P) or in excess (i.e., Fe), but no clear connection to specific scions or rootstocks could be established. Tree height, tree diameter, fruit production, and juice content were higher in both sweet oranges grafted on ‘HRS 802’ compared with those on ‘HRS 812’ and ‘Carrizo’. Therefore, ‘HRS 802’ rootstock can be recommended to local farmers growing sweet oranges in Alonso series soil.

ACS Style

Rebecca Tirado-Corbalá; Alejandro Segarra-Carmona; Manuel Matos-Rodríguez; Dania Rivera-Ocasio; Consuelo Estévez de Jensen; Jeniffer Pagán. Assessment of Two Sweet Orange Cultivars Grafted on Selected Rootstocks Grown on an Inceptisol in Puerto Rico. Horticulturae 2020, 6, 30 .

AMA Style

Rebecca Tirado-Corbalá, Alejandro Segarra-Carmona, Manuel Matos-Rodríguez, Dania Rivera-Ocasio, Consuelo Estévez de Jensen, Jeniffer Pagán. Assessment of Two Sweet Orange Cultivars Grafted on Selected Rootstocks Grown on an Inceptisol in Puerto Rico. Horticulturae. 2020; 6 (2):30.

Chicago/Turabian Style

Rebecca Tirado-Corbalá; Alejandro Segarra-Carmona; Manuel Matos-Rodríguez; Dania Rivera-Ocasio; Consuelo Estévez de Jensen; Jeniffer Pagán. 2020. "Assessment of Two Sweet Orange Cultivars Grafted on Selected Rootstocks Grown on an Inceptisol in Puerto Rico." Horticulturae 6, no. 2: 30.

Journal article
Published: 06 November 2018 in Horticulturae
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Since Huanglongbing (HLB) disease was detected in 2009 in Puerto Rico, a steady drop in citrus production has been experienced, forcing farmers to abandon their land or switch to other crops. Between 2015 and 2016, we used grafted trees from two experimental orchards (Tahiti lime and Nova mandarin), each on five rootstocks, to collect soil and plant tissue samples from each scion‒rootstock combination to determine soil fertility, tissue nutrient content, and yield. The tree growth parameters (height, diameter, and canopy volume) and efficiency of the two orchards were also measured. These orchards, growing in Coto series (Typic Hapludox), were planted in 2009 and reported as heavily infested with HLB by 2011. Our results showed that soil and tissue samples from the Tahiti lime orchard exhibited benefits for tree growth parameters when grafted on Carrizo and Cleopatra rootstocks. Lower tree mortality (13%) was observed for Tahiti lime grafted on Carrizo, HRS 812, Carrizo and Rough lemon rootstocks, while 25% of the Nova mandarin trees perished on the same rootstocks. Yield was higher for Tahiti lime grafted on Swingle rootstock (35.6 fruit m−3) as compared to the other rootstocks. In general, HLB appears to have caused poor development and low production in the Nova mandarin orchard.

ACS Style

Rebecca Tirado-Corbalá; Dania Rivera-Ocasio; Alejandro Segarra-Carmona; Elvin Román-Paoli; Agenol González. Performance of Two Citrus Species Grafted to Different Rootstocks in the Presence of Huanglongbing Disease in Puerto Rico. Horticulturae 2018, 4, 38 .

AMA Style

Rebecca Tirado-Corbalá, Dania Rivera-Ocasio, Alejandro Segarra-Carmona, Elvin Román-Paoli, Agenol González. Performance of Two Citrus Species Grafted to Different Rootstocks in the Presence of Huanglongbing Disease in Puerto Rico. Horticulturae. 2018; 4 (4):38.

Chicago/Turabian Style

Rebecca Tirado-Corbalá; Dania Rivera-Ocasio; Alejandro Segarra-Carmona; Elvin Román-Paoli; Agenol González. 2018. "Performance of Two Citrus Species Grafted to Different Rootstocks in the Presence of Huanglongbing Disease in Puerto Rico." Horticulturae 4, no. 4: 38.

Journal article
Published: 10 June 2018 in Horticulturae
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In Puerto Rico, oranges made up $6,452,000 of the agricultural gross income for 2014–2015. Today, citrus greening (CG) is the most aggressive disease affecting the citrus industry in the whole world. This disease causes dieback of the plant, among other symptoms, which is resulting in the reduction of citrus trees in the field across the world. Currently, it is recommended to grow citrus rootstocks in nurseries to produce disease-free trees. The objective of this investigation was to evaluate (before and after grafting) the effect of different substrate mixes and quantities of fertilizers on the rootstocks Carrizo citrange and Swingle citrumelo in order to accelerate their development inside of a protected structure. The treatments were: Promix + sand (control) (1:1), Promix + sand + coco peat (1:1:1), Promix + sand + coffee compost (1:1:1) and Promix + sand + rice husk (1:1:1). Two 18-6-2 fertilizer treatments were also evaluated: 5.6 g and 8.5 g. The substrate that contained 33% rice husks negatively influenced every parameter evaluated for both rootstocks. Carrizo presented better development on the coffee compost mix, while Swingle did not exhibit significant differences among any substrates, except on rice husk, for most of the parameters. “Rhode Red Valencia” presented better results for dry weight when grafted on Carrizo with the coffee substrate. The rice husk substrate is not recommended for the citrus tree production at the nursery level.

ACS Style

Sandra C. Arce; Dania Rivera. New Media Components and Fertilization to Accelerate the Growth of Citrus Rootstocks Grown in a Greenhouse. Horticulturae 2018, 4, 10 .

AMA Style

Sandra C. Arce, Dania Rivera. New Media Components and Fertilization to Accelerate the Growth of Citrus Rootstocks Grown in a Greenhouse. Horticulturae. 2018; 4 (2):10.

Chicago/Turabian Style

Sandra C. Arce; Dania Rivera. 2018. "New Media Components and Fertilization to Accelerate the Growth of Citrus Rootstocks Grown in a Greenhouse." Horticulturae 4, no. 2: 10.