scholarly journals Florida Blueberry Leaf Disease Guide

EDIS ◽  
2019 ◽  
Vol 2019 (3) ◽  
Author(s):  
Douglas A. Phillips ◽  
Norma C. Flor ◽  
Philip F. Harmon
Keyword(s):  
Plant Pathology ◽  
Environmental Conditions ◽  
Production Systems ◽  
Highbush Blueberry ◽  
Basic Information ◽  
Management Options ◽  
Pathology Department ◽  
Leaf Spots ◽  
Southern Highbush ◽  
Leaf Symptoms

Southern highbush blueberry (SHB) cultivars are commercially grown throughout much of Florida, in both deciduous and evergreen production systems. In both systems, leaves can be damaged by many factors including environmental conditions, chemical applications, insects, and diseases. This new 12-page publication of the UF/IFAS Plant Pathology Department includes basic information to assist growers in determining 1) the likely cause (fungal, viral, algal, or bacterial) of leaf symptoms, 2) when specific leaf spots are likely to occur, 3) characteristic symptoms of common leaf problems, and 4) some of the management options that are available. Written by Douglas A. Phillips, Norma C. Flor, and Philip F. Harmon. http://edis.ifas.ufl.edu/pp348

scholarly journals Botryosphaeria Stem Blight on Southern Highbush Blueberry in Florida

EDIS ◽  
2019 ◽  
Vol 2019 (2) ◽  
Author(s):  
Norma C. Flor ◽  
Douglas A. Phillips ◽  
Philip F. Harmon
Keyword(s):  
United States ◽  
Plant Pathology ◽  
Vascular Disease ◽  
Abiotic Stresses ◽  
Southern United States ◽  
Highbush Blueberry ◽  
Stem Blight ◽  
Pathology Department ◽  
Advanced Stages ◽  
Southern Highbush

Botryosphaeria stem blight is the most common and damaging fungal vascular disease on southern highbush blueberry in the southern United States, causing stem and cane dieback and reductions in yield. Advanced stages of this disease may cause premature plant death, which results in significant replanting costs for growers. Biotic or abiotic stresses from a variety of sources can make plants more susceptible to infection by stem blight pathogens. This new 5-page publication is intended for Florida blueberry growers to use as a guide in the identification and management of Botryosphaeria stem blight on southern highbush blueberry. Written by Norma C. Flor, Douglas A. Phillips, and Philip F. Harmon and published by the UF/IFAS Plant Pathology Department. http://edis.ifas.ufl.edu/pp347

scholarly journals Anthracnose on Southern Highbush Blueberry

EDIS ◽  
2018 ◽  
Vol 2018 (3) ◽  
Author(s):  
Douglas A Phillips ◽  
Maria C. Velez-Climent ◽  
Philip F. Harmon ◽  
Patricio R. Munoz
Keyword(s):  
Plant Pathology ◽  
Fungal Pathogens ◽  
Highbush Blueberry ◽  
Pathology Department ◽  
Wide Range ◽  
Highbush Blueberries ◽  
Southern Highbush

Information contained in this 4-page publication is intended for Florida blueberry growers to use as a guide in the identification of anthracnose, a group of fungal pathogens that affects a wide range of plants, including southern highbush blueberries (SHB). Written by Douglas A. Phillips, Maria C. Velez-Climent, Philip F. Harmon, and Patricio R. Munoz and published by the UF/IFAS Plant Pathology Department, May 2018.https://edis.ifas.ufl.edu/pp337

scholarly journals A Review for Southern Highbush Blueberry Alternative Production Systems

2020 ◽  
Author(s):  
Yang Fang ◽  
Gerardo H. Nunez ◽  
Mariana Neves da Silva ◽  
Douglas A. Phillips ◽  
Patricio R. Munoz
Keyword(s):  
Open Field ◽  
Production Systems ◽  
Academic Research ◽  
Highbush Blueberry ◽  
Entry Barrier ◽  
Advantages And Disadvantages ◽  
Alternative Systems ◽  
Southern Highbush ◽  
High Yields ◽  
Field Production

Southern highbush blueberry plantations have been expanded into worldwide non-traditional growing areas with elite cultivars and improved horticultural practices. This article presents a comprehensive review of current production systems – alternatives to traditional open field production – such as production in protected environments, high-density plantings, evergreen production, and container-based production. We discuss the advantages and disadvantages of each system and compare their differences to the open field production. In addition, potential solutions have been provided for some of the disadvantages. We also highlight some of the gaps existing between academic studies and production in industry, providing a guide for future academic research. All these alternative systems have shown the potential to produce high yields with high quality berries. Alternative systems, compared to the field production, require higher establishment investments and thus create an entry barrier for new producers. Nevertheless, with their advantages, alternative productions have potential to be profitable.

scholarly journals Evaluation of Monitoring Traps and Lures for Drosophila suzukii (Diptera: Drosophilidae) in Berry Plantings in Florida

Insects ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 313 ◽  
Author(s):  
Dasia S. Harmon ◽  
Muhammad Haseeb ◽  
Lambert H. B. Kanga ◽  
Oscar E. Liburd
Keyword(s):  
Production Systems ◽  
Insect Pest ◽  
Vaccinium Corymbosum ◽  
Economic Damage ◽  
Highbush Blueberry ◽  
Limited Information ◽  
Drosophila Suzukii ◽  
Trapping Period ◽  
Southern Highbush ◽  
Monitoring Traps

Drosophila suzukii (Diptera: Drosophilidae) is an invasive insect pest that was detected in Florida in August 2009 in Hillsborough County. Very limited information is available for berry growers to properly detect and monitor this serious pest in southern highbush blueberry (hybrids of Vaccinium corymbosum L. × V. darrowi Camp), rabbiteye blueberry (Vaccinium virgatum L.), and blackberry (Rubus fruticosus L.) production systems. We compared several D. suzukii traps and lures/baits at two sites in Florida. The traps evaluated included Trécé, Scentry, and a standard homemade cup trap. These traps were compared with various baits and lures, including Trécé lure, Scentry lure, yeast bait, and Suzukii trap, under Florida production systems. Early detection is important to develop an effective monitoring system so management action can be taken before economic damage occurs. Data were recorded as overall trends, as well as in 4–5 trapping periods from early to late season. Overall, the Scentry trap baited with Scentry lure, the Trécé trap baited with Trécé lure + yeast, and the Trécé trap baited with Scentry lure were the best performing traps. Yeast-based traps were also attractive to D. suzukii early in the season, but they did not provide consistent captures as the season progressed. The Scentry trap with yeast bait, the Scentry trap with Scentry lure, the Trécé trap with Trécé lure + yeast bait, and a cup trap with yeast bait caught most of the flies during the first trapping period in 2015 and 2016 in the rabbiteye blueberry. In the southern highbush blueberry, the population of D. suzukii was much lower than in the rabbiteye blueberry planting, and the Scentry trap with Scentry lure captured the highest number of flies during the first trapping period in 2016. In the blackberry, the Scentry trap with Scentry lure numerically had the highest captures during the first trapping period, but this was not significantly different from the cup trap with yeast bait, the Trécé trap baited with Suzukii trap, and the Trécé trap with Trécé lure. Overall, the Scentry trap with Scentry lure was the most consistent trap that captured D. suzukii flies throughout the season in the three production systems—rabbiteye blueberry, southern highbush blueberry, and blackberry. Growers in low pressure systems that are similar to Florida can use the Scentry trap with Scentry lure to monitor D. suzukii populations.

scholarly journals Differences in Phenology and Reserve Carbohydrate Concentrations Between Dormant and Nondormant Production Systems in Southern Highbush Blueberry

2001 ◽  
Vol 126 (4) ◽  
pp. 386-393 ◽  
Author(s):  
P.A.W. Swain ◽  
R.L. Darnell
Keyword(s):  
Production Systems ◽  
Vaccinium Corymbosum ◽  
N Fertilization ◽  
Highbush Blueberry ◽  
Flower Bud ◽  
Vegetative Development ◽  
Average Maximum ◽  
Leaf Retention ◽  
Southern Highbush ◽  
Reserve Carbohydrate

Two cultivars of southern highbush blueberry (Vaccinium corymbosum L. interspecific hybrid), `Sharpblue' and `Wannabe', were container-grown outside in either a dormant or nondormant production system to determine how the two production systems affected carbohydrate (CH2O) status, growth, and development. Plants were maintained in the nondormant condition by continuous N fertilization throughout winter (average maximum/minimum temperatures of 17/5 °C). Plants in the nondormant system retained their foliage longer into the winter compared with plants in the dormant system. Flower bud number, density, fruit number, and total fruit fresh weight (FW) per plant were greater in the nondormant compared with the dormant system plants for both cultivars. Mean fruit FW was greater in dormant compared with nondormant `Wannabe' plants, while in `Sharpblue', mean fruit FW was similar in both systems. Cane and root CH2O concentrations in nondormant system plants were generally similar to or lower than those measured in dormant system plants. Assuming that longer leaf retention in nondormant system plants increased CH2O synthesis compared with dormant system plants, the patterns of reproductive/vegetative development and root/shoot CH2O concentrations indicate that the increased CH2O in nondormant system plants was allocated to increased reproductive growth in lieu of CH2O reserve accumulation. It is probable that this increased CH2O availability, combined with longer perception of short days due to longer leaf retention, were major factors in increasing flower bud initiation and yield in the nondormant compared with the dormant system plants.

scholarly journals Performance of Southern Highbush Blueberry Cultivars Under High Tunnels in Florida

2012 ◽  
Vol 22 (5) ◽  
pp. 700-704 ◽  
Author(s):  
Bielinski M. Santos ◽  
Teresa P. Salame-Donoso
Keyword(s):  
Production Systems ◽  
Effective Means ◽  
Vaccinium Corymbosum ◽  
Fruit Weight ◽  
Highbush Blueberry ◽  
Air Temperatures ◽  
High Tunnels ◽  
Southern Highbush ◽  
Freeze Protection ◽  
Open Fields

A study was conducted over two southern highbush blueberry (Vaccinium corymbosum × Vaccinium darrowi) seasons in a grower field in Florida. The objective was to compare the early fruit weight of southern highbush blueberry cultivars in high tunnels and in open fields. Four treatments were tested using combinations of two southern highbush blueberry cultivars (Snow Chaser and Springhigh) and two production systems (open fields and 18-ft-high tunnels). The results indicated that there was a significant effect of the production systems on the number of days with air temperatures at or near freezing (≤34 °F), and maximum and minimum air temperatures. The minimum air temperature in open-field plots reached ≈19 and 21 °F (61 freezing or near-freezing events) in the 2009–10 and 2010–11 seasons, respectively, whereas the minimum air temperatures inside the high tunnels were ≈32 and 33 °F, respectively, during the same seasons (only 3 days at ≤34 °F). This indicated that using high tunnels was an effective means to avoid freezing air temperatures in blueberries. In the first season, the cumulative early fruit weight was the highest in plots planted with ‘Snow Chaser’ inside the high tunnels (≈10 tons/acre), while the combined production of the two cultivars in the open fields did not reach 1 ton/acre until the end of the early harvests. The following year, there were no differences in the cumulative early fruit weight of both cultivars when planted in the open fields (2.2 tons/acre) and the cumulative fruit yields of ‘Springhigh’ and ‘Snow Chaser’ growing inside the high tunnels was twice and four times higher, respectively, than the early fruit production obtained in the open fields. These data showed the profound effect of high tunnels on flower protection and fruit set. High tunnels reduced water use for freeze protection. The total volume used in the open fields during the freezing or near-freezing days was ≈2.5 acre-inch/acre per 8 hours of freeze protection, whereas only 1/10 of that volume was applied inside the structures.

scholarly journals Botrytis Blossom Blight of Southern Highbush Blueberry

EDIS ◽  
1969 ◽  
Vol 2004 (9) ◽  
Author(s):  
Philip F. Harmon
Keyword(s):  
Plant Pathology ◽  
Information Search ◽  
Cooperative Extension Service ◽  
Extension Service ◽  
Publication Date ◽  
Highbush Blueberry ◽  
Original Publication ◽  
University Of Florida ◽  
Extension Agent ◽  
Southern Highbush

Information contained in this publication is intended to help blueberry growers in Florida identify and manage Botrytis blossom blight. For more information, search the EDIS website (http://edis.ifas.ufl.edu) or contact your local UF/IFAS Extension agent (http://ifas.ufl.edu/extension-offices-rec-maps.shtml). This document is PP198, one of a series of the Plant Pathology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date April 2004.  PP198/PP119: Botrytis Blossom Blight of Southern Highbush Blueberry (ufl.edu)

scholarly journals A Review for Southern Highbush Blueberry Alternative Production Systems

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1531
Author(s):  
Yang Fang ◽  
Gerardo H. Nunez ◽  
Mariana Neves da Silva ◽  
Douglas A. Phillips ◽  
Patricio R. Munoz
Keyword(s):  
Open Field ◽  
Production Systems ◽  
Academic Research ◽  
Highbush Blueberry ◽  
Entry Barrier ◽  
Advantages And Disadvantages ◽  
Alternative Systems ◽  
Southern Highbush ◽  
High Yields ◽  
Field Production

Southern highbush blueberry cultivation has expanded into non-traditional growing areas worldwide due to elite cultivars and improved horticultural practices. This article presents a comprehensive review of current production systems—alternatives to traditional open field production—such as production in protected environments, high-density plantings, evergreen production, and container-based production. We discuss the advantages and disadvantages of each system and compare their differences to open field production. In addition, we provide potential solutions for some of the disadvantages. We also highlight some of the gaps existing between academic studies and production in industry, providing a guide for future academic research. All these alternative systems have shown the potential to produce high yields with high-quality berries. Alternative systems, compared to field production, require higher establishment investments and thus create an entry barrier for new producers. Nevertheless, with their advantages, alternative productions have the potential to be profitable.

Pestalotiopsis (Pestalotia) Diseases of Palm

EDIS ◽  
2019 ◽  
Vol 2006 (1) ◽  
Author(s):  
Monica L. Elliott
Keyword(s):  
Plant Pathology ◽  
Leaf Spot ◽  
Leaf Blade ◽  
The Other ◽  
Publication Date ◽  
Original Publication ◽  
Leaf Petiole ◽  
Pathology Department ◽  
Leaf Spots

The fungus Pestalotiopsis causes leaf spots, petiole/rachis blights and sometimes a bud rot of palms. In other words, unlike the other leaf spot and petiole blight pathogens, which attack either the leaf blade or the leaf petiole, Pestalotiopsis attacks all parts of the leaf from base to tip. It is also one of the more ubiquitous fungi in the palm canopy, and is easily isolated from healthy palm tissue. This document is PP-217, one of a series of the Plant Pathology Department, UF/IFAS Extension. Original publication date January 2006.  PP-217/PP141: Pestalotiopsis (Pestalotia) Diseases of Palm (ufl.edu)

scholarly journals Leaf Spots and Leaf Blights of Palm

EDIS ◽  
2019 ◽  
Vol 2006 (1) ◽  
Author(s):  
Monica L. Elliott
Keyword(s):  
Plant Pathology ◽  
Leaf Blade ◽  
Publication Date ◽  
Original Publication ◽  
Leaf Petiole ◽  
Fact Sheet ◽  
Pathology Department ◽  
Leaf Spots ◽  
Leaf Segments ◽  
Leaf Blights

This fact sheet is limited to those diseases where the pathogens only infect (invade) and cause spots and blights of the leaf blade. Other diseases may cause death of leaflets and leaf segments but are actually the result of a pathogen infecting the leaf petiole or rachis. Petiole/rachis blight diseases are discussed separately at http://edis.ifas.ufl.edu/pp145. This document is PP-218, one of a series of the Plant Pathology Department, UF/IFAS Extension. Original publication date Janurary 2006. PP-218/PP142: Leaf Spots and Leaf Blights of Palm (ufl.edu)

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