Bruce Bordelon

Professor of Horticulture
Department of Horticulture and Landscape Architecture
Area(s) of Interest: Grapes and Small Fruit
Bruce Bordelon's website

175 articles by this author

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FAYETTEVILLE, Ark. — Ouachita blackberry, a 2003 thornless variety from the University of Arkansas System Division of Agriculture, received the Outstanding Fruit Cultivar Award from the Fruit Breeding Professional Interest Group of the American Society of Horticultural Science. The Outstanding Fruit Cultivar Award recognizes noteworthy achievements in fruit breeding and highlights a modern fruit introduction that has a significant impact on the industry. The award was presented July 24 during the ASHS Fruit Breeding Professional Interest Group meeting, which was held virtually this year. The award has been presented since 1987 to noteworthy cultivars, according to information on the ASHS website. Top seller “Ouachita has been the most important variety from our fruit breeding program,” said John Clark, Distinguished Professor of Horticulture for the Division of Agriculture, and fruit breeder for the Arkansas Agricultural Experiment Station, the division’s research arm. Clark said almost 5 million plants have been propagated and sold,[Read More…]


Plant nutritional status is important for all phases of plant growth and has a direct effect on vigor, fruitfulness, cold hardiness, and other factors. Tissue analysis is the most reliable means of determining plant nutritional status. Combined with soil testing, tissue analysis can help pinpoint the source of problems and determine what measures may be needed to ensure proper nutrition of the crop. Tissue analysis samples should be collected at the appropriate time to give the most meaningful results. For strawberry, sample the first fully expanded leaves after renovation, usually in mid to late July. For brambles, sample leaves on non-fruiting canes (primocanes) between August 1 and 20. For blueberries, sample leaves during the first week of harvest (already past). For grapes, samples should be taken about 70 days after full bloom or at the start of veraison, usually early to mid-August. Samples should be adequate in size. Collect 30-60[Read More…]


Due to the COVID crisis, most Purdue Extension meetings will be held virtually. Most Purdue Extension staff are working from home and are available to answer your questions by email, phone or through social media. Our contact information is at the end of the newsletter. July 30, 2020 Small Farm Education Field Day and Webinar Series hosted by Purdue Extension and the Purdue Student Farm. August 3rd 12-1pm August 5th 12-1pm August 7th 12-1pm August 10th 12-1pm August 12th 12-1pm August 14th 12-1pm Register and see the schedule of topics at https://tinyurl.com/y5ahtrow Contact Lori Jolly-Brown, ljollybr@purdue.edu September 10-12, 2020 Purdue Extension Master Gardener State Conference Sponsored by the Hamilton and Howard County Master Gardener Associations Hamilton County Fairgrounds, Noblesville, IN (September 10 and 11) Tours of Howard County gardens, Kokomo, IN (September 12) https://hcmga.org/2020sc (Registration open to Purdue Extension Master Gardener volunteers and Extension staff only) September 10, 2020 Hydroponics Workshop[Read More…]


blackberry

Grapes are at early to mid-version across most parts of the state, which is about normal timing. There are few disease and insect problems at this stage due to the relatively dry June and early July. However, if we continue to get rainfall as we have experienced lately, expect some berry cracking and potential sour rot problems. Recall from the presentation at Hort Congress by Dr. Megan Hall a couple of years ago that managing fruit flies is critical to controlling sour rot. There are several options listed in the spray guide. Addition of Oxidate or Fracture to suppress yeasts and bacteria will also help. An upcoming webinar August 11 “Biology and management of post-veraison fruit rots” will cover the latest research and recommendations. Register here: https://cornell.zoom.us/meeting/register/tJAuf–tpjgiGdQdY3QLFP1g2FHWDfxCbkkp Apples are sizing up normally. There is a light crop on some varieties, a decent crop on a few, and almost no crop on[Read More…]


By now, most harvest is over across the state. As soon as harvest is done, it’s time to begin the renovation process. Matted row strawberry plantings must be renovated each year to establish new crowns for the following year’s crop. For best results, renovation should be started immediately after the harvest is completed to promote early runner formation. This is especially important in the northern part of the state with its shorter growing season. The earlier a runner gets set, the higher its yield potential. Growers should begin renovation as soon as the last marketable berries are harvested. Delaying renovation is one of the most common mistakes growers make. Renovation should be completed by the end of July in normal years. The following steps describe renovation of commercial strawberry fields. Weed control: Post emergent application: Annual broadleaf weeds can be controlled with 2,4-D amine formulations. Check the label as only[Read More…]


Michigan State University is seeking help to conduct a survey for QoI/FRAC 11 resistant powdery mildew populations around the Great Lakes region. MSU and FRAME are seeking your help to conduct this survey. Please contact Nancy Sharma, a plant pathology graduate student, at sharm115@msu.edu if you are interested in helping us. You will receive a kit to test your grape powdery mildew samples in your vineyard. The samples will then be sent in a provided overnight mailer back to MSU. We will send you the detailed procedure for sample collection as well. See the full story at: https://www.canr.msu.edu/news/grapevine-powdery-mildew-fungicide-resistance-survey        


Due to the COVID crisis, most Purdue Extension meetings will be held virtually. Most Purdue Extension staff are working from home and are available to answer your questions by email, phone or through social media. Our contact information is at the end of the newsletter. July 30, 2020 Small Farm Education Field Day and Webinar Series hosted by Purdue Extension and the Purdue Student Farm. August 3rd 12-1pm August 5th 12-1pm August 7th 12-1pm REGISTER TODAY at https://tinyurl.com/y5ahtrow Contact Lori Jolly-Brown, ljollybr@purdue.edu September 10-12, 2020 Purdue Extension Master Gardener State Conference Sponsored by the Hamilton and Howard County Master Gardener Associations Hamilton County Fairgrounds, Noblesville, IN (September 10 and 11) Tours of Howard County gardens, Kokomo, IN (September 12) https://hcmga.org/2020sc (Registration open to Purdue Extension Master Gardener volunteers and Extension staff only) September 10, 2020 Hydroponics Workshop Hosted virtually Contact Lori Jolly-Brown, ljollybr@purdue.edu January 19-21, 2021 Indiana Green Expo Indiana[Read More…]


An Indiana Pesticide Clean Sweep Project designed to collect and dispose of suspended, canceled, banned, unusable, opened, unopened or just unwanted pesticides (weed killers, insecticides, rodenticides, fungicides, miticides, etc.) is being sponsored by the Office of Indiana State Chemist (OISC). This disposal service is free of charge up to 250 pounds per participant. Over 250 pounds there will be a $2.00 per pound charge. This is a great opportunity for you to legally dispose of unwanted products at little or no cost.  WHO: All public and private schools, golf courses, nurseries, farmers, ag dealers, cities, towns, municipalities and county units of government or others receiving this notice are eligible to participate.  WHEN/ 9:00am to 3:00pm Local Time  WHERE: August 18, 2020: Noble County Fairgrounds, 580 Fair St. Kendallville, IN  August 19, 2020: White County Fairgrounds, 12 N 25 E Reynolds, IN  August 20, 2020: Hancock County Fairgrounds, 620 Apple St.[Read More…]


Apples are 1-1/2 inch to 2 inch size where you can find them. There is plenty of scarring on fruit from the freeze. Apple scab is also common in unsprayed blocks. Pawpaw fruit are sizing and Phyllostica leaf spot is showing up. Grapes are at cluster close/berry touch so berries should no longer be susceptible to black rot, powdery or downy mildews, though late season rots are still a possibility. Most grape varieties have a very small crop. Those with a full crop include Frontenac noir, gris and blanc, Petite Pearl, Crimson Pearl, Verona, and Itasca. A few others have a half crop or so. Varieties with low crops are showing excess vigor and shoot positioning will be very important to manage canopies to assure fruitful buds next year. I found the first symptoms of downy mildew this week, and Japanese beetles are present but not at damaging levels. Spray intervals[Read More…]


Due to the COVID crisis, all Purdue Extension meetings have been cancelled through June. After July 1, in-person meetings may be held and will follow state and local guidelines. Most Purdue Extension staff are working from home and we are available to answer your questions by email, phone or through social media. Our contact information is at the end of the newsletter. June 24, 2020 Greenhouse and Indoor Production of Specialty Crops Webinar Series Registration: https://purdue.ca1.qualtrics.com/jfe/form/SV_eJRqQ2LzGi0jtyd Contact: Krishna Nemali knemali@purdue.edu June 30, 2020 Indiana Hort Society summer field day (Virtual, hosted by Beasley’s Orchard) More details to come. July 30, 2020 Small Farm Education Field Day Daniel Turf Center, Purdue Student Farm Contact Lori Jolly-Brown, ljollybr@purdue.edu September 10-12, 2020 Purdue Extension Master Gardener State Conference Sponsored by the Hamilton and Howard County Master Gardener Associations Hamilton County Fairgrounds, Noblesville, IN (September 10 and 11) Tours of Howard County gardens, Kokomo, IN[Read More…]