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Horticulturae
Special Issues
Advances in Citrus Horticulture
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Advances in Citrus Horticulture

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Fruit Production Systems".

Deadline for manuscript submissions: closed (31 December 2020) | Viewed by 8871

Special Issue Editors

Dr. Rhuanito S. Ferrarezi

E-Mail Website
Guest Editor
Department of Horticulture, University of Georgia, Athens, GA, USA
Interests: precision irrigation, water management; plant mineral nutrition; nutrient management; cropping systems, greenhouses; vertical farms
Special Issues, Collections and Topics in MDPI journals
Dr. Alberto San Bautista

E-Mail Website
Guest Editor
Crop Production Department, Universitat Politècnica de València, Cno Vera 14, 46020 Valencia, Spain
Interests: agronomy and remote sensing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Citrus is the highest-valued fruit crop in terms of international trade due to the fresh and processed orange juice markets. The crop is highly diverse and includes grapefruits, lemons, limes, oranges, and tangerines, among other fruits.

The citrus industry has faced many threats in the last decades, such as the tristeza virus, citrus canker, and recently, the citrus greening disease or huanglongbing. Despite the negative effects of pests and diseases, the citrus industry has improved productivity through advanced horticultural practices.

The purpose of this Special Issue on “Advances in Citrus Horticulture” is to present cutting-edge studies, tools, methods, and innovations that have been successful in several fields of citrus horticulture:

  • New propagation methods
  • Precision irrigation
  • Enhanced nutrition
  • Scion and rootstock selection
  • Soil health improvement
  • Modern cultural practices
  • High-density plantings
  • New production technologies
  • Integrated pest, disease and weed management
  • Post-harvest technologies and others

Your contribution to this topic through literature reviews or original research papers that deal with citrus horticulture are welcomed on fresh and for processing markets. I look forward to the opportunity to receive your manuscripts and share interesting outcomes with the community of scientists, students, technicians, and professionals that work with citrus worldwide.

Dr. Rhuanito S. Ferrarezi
Dr. Alberto San Bautista
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Horticulturae is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • cultural practices and postharvest
  • cultivars and rootstocks
  • irrigation and fertilization
  • new technologies
  • pests and diseases

Published Papers (2 papers)

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Research

16 pages, 3977 KiB  
Article
Salinity-Induced Physiological Responses of Three Putative Salt Tolerant Citrus Rootstocks
by Lamiaa M. Mahmoud, Manjul Dutt, Christopher I. Vincent and Jude W. Grosser
Horticulturae 2020, 6(4), 90; https://0-doi-org.brum.beds.ac.uk/10.3390/horticulturae6040090 - 25 Nov 2020
Cited by 17 | Viewed by 4581
Abstract
Our study aimed to evaluate the physiological responses following salinity treatment of three putatively salt-tolerant Citrus rootstocks recently developed by the University of Florida’s Citrus breeding program. Four-month-old seedlings from each of the three rootstocks (HS1, HS17, and HC15) were irrigated with 0, [...] Read more.
Our study aimed to evaluate the physiological responses following salinity treatment of three putatively salt-tolerant Citrus rootstocks recently developed by the University of Florida’s Citrus breeding program. Four-month-old seedlings from each of the three rootstocks (HS1, HS17, and HC15) were irrigated with 0, 60, 80, and 100 mm NaCl solution. The seedlings were evaluated together with the salt-tolerant Cleopatra mandarin as a positive control, Volkamer lemon as a moderately salt-tolerant rootstock, and the salt-sensitive Carrizo rootstock as a negative control. Our results demonstrated that chlorophyll content, net CO2 assimilation rate (A), transpiration rate (E), and stomatal conductance (gsw) significantly decreased in response to salinity. Na+ and Cl− levels were higher in leaf tissues than in the roots. Relatively little damage to the cellular membrane was recorded in HC15 and Cleopatra rootstocks under the 100 mm NaCl treatment, along with high accumulation of total phenolic content (TPC), while HS17 had the highest proline levels. Our results indicate that HC15 and HS17 rootstocks exhibited salt tolerance capacity via different strategies under salt stress and could be suitable replacements to the commercially available, salt-tolerant Cleopatra rootstock. Full article
(This article belongs to the Special Issue Advances in Citrus Horticulture)
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18 pages, 2307 KiB  
Article
Grapefruit Production in Open Hydroponics System
by Rhuanito S. Ferrarezi, Thiago A. R. Nogueira, Arun D. Jani, Alan L. Wright, Mark A. Ritenour and Randy Burton
Horticulturae 2020, 6(3), 50; https://0-doi-org.brum.beds.ac.uk/10.3390/horticulturae6030050 - 01 Sep 2020
Cited by 2 | Viewed by 3402
Abstract
Conventionally managed citrus orchards can be modified to incorporate advanced horticultural practices such as higher plant density and efficient water and fertilizer application known as open hydroponics system (OHS) to increase productivity under Huanglongbing (HLB) endemic conditions. A field study was conducted from [...] Read more.
Conventionally managed citrus orchards can be modified to incorporate advanced horticultural practices such as higher plant density and efficient water and fertilizer application known as open hydroponics system (OHS) to increase productivity under Huanglongbing (HLB) endemic conditions. A field study was conducted from 2013 to 2018 to evaluate the effect of an OHS on “Ray Ruby” grapefruit (RR) production under HLB-endemic conditions. We tested a combination of different rootstocks [Sour orange (RR/SO) and US-897 (RR/897)], tree planting densities [standard (STD, 358 trees per ha) and high density staggered (HDS, 953 trees per ha)], fertilization methods (dry granular—dry and fertigation—fert), and irrigation systems (double driplines—DD and microsprinkler—MS), arranged in five treatments: RR/SO_STD_dry_MS, RR/SO_HDS_fert_DD, RR/897_HDS_fert_MS, RR/897_HDS_fert_DD, and RR/SO_HDS_fert_MS. All trees were infected by Candidatus Liberibacter asiaticus five years after planting. Trunk diameter and canopy volume increased over time and were higher under RR/SO_STD_dry_MS compared to other treatments. Total fruit number increased in 2016/17 compared to other seasons; however, 65% of fruit were classified as small (<100 mm). Fruit produced under RR/897_HDS_fert_DD had the highest amount (79%) of adequate size fruit (100–117 mm) compared to other treatments. Fruit yield was similar for both rootstocks planted at HDS using DD and MS fertigation, and 67% higher than the standard treatment (RR/SO_STD_dry_MS). Soluble solid contents (SSC), titratable acidity, and SSC-to-titratable acidity ratio were not affected by the treatments. HDS planting resulted in higher fruit yield, irrespective of rootstock and irrigation system, representing an important advance in grapefruit production. Overall, our results demonstrated that production of grapefruit in high-density using OHS can be used by citrus growers who aim to make the best water and fertilizer management under HLB-endemic conditions. Full article
(This article belongs to the Special Issue Advances in Citrus Horticulture)
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