Grafting Tomatoes for Disease Resistance and Improved Yield

Grafting Tomatoes for Disease Resistance and Improved Yield

A few weeks ago I was lucky enough to attend North Carolina State’s Tomato Field Day, at the Mountain Horticultural Crops Research and Extension Center in Mills River, NC.  Every summer crowds flock from all over the Southeast to learn what’s new in the world of tomatoes.  Since it’s not always convenient for you to drop what you’re doing to make a road trip to North Carolina, I’ll highlight something I learned from the field day.

Jonathan Kressin, a PhD candidate in Plant Pathology at NC State, is researching the effects of grafted tomatoes on bacterial wilt management.  Jonathan is not only researching rootstock varieties, he is also looking at cultural practice impacts on bacterial wilt.

Grafted Tomato Transplant

A recently transplanted grafted tomato plant. Photo Credit: Josh Freeman, University of Florida/IFAS

Materials and Methods

Jonathan selected 12 rootstock varieties for trials at the 3 tomato growing regions in North Carolina (Mountains, Piedmont, and Coastal Plains).  The cultural practice he is studying is transplant depth.  He wants to determine if burying the graft union has any effect on bacterial wilt tolerance in grafted plants.

Bacterial Wilt in a Tomato Field

A tomato field in Florida with severe incidence of bacterial wilt. Photo credit: Mathews Paret, University of Florida/IFAS

Results

  • Several of the tested rootstocks performed equally well across the 3 regions.  To help with disease resistance, it is important to rotate rootstock varieties and suppliers.
  • The rootstock variety ‘Shield’ displayed the least bacterial wilt resistance overall.
  • The rootstock variety ‘CRA66’ is recommended for open-pollinated varieties.
  • Transplant depth (burying plants below the graft union compared to above the union) did not have any effect on bacterial wilt occurrence.
  • Grafted plants have the potential to increase yield and average fruit size.

Future Research

  • Studies will be conducted to validate and understand the effect of transplant depth on bacterial wilt occurrence.
  • Genetic testing will be conducted to help develop rootstock rotation recommendations.

Grafted transplants significantly increase the cost of production, but as agricultural automation becomes more prevalent, transplant costs should come down.  Grafted tomatoes have the potential to increase yields and reduce inputs.  It’s exciting to see what the future holds for the ever adapting business of tomato farming.  More details on NC State’s tomato research can be found at the Mountain Horticultural Crops Research and Extension Center’s Tomato Production website.

Highlights from the 2018 Florida Pecan Field Day

Highlights from the 2018 Florida Pecan Field Day

Dr. Clive Bock, USDA-ARS talked to attendees about pecan scab management at the 2018 Pecan Field Day

This year’s UF/IFAS Florida Pecan Field Day took place on Thursday, September 13, 2018 at the Jefferson County Extension Office in Monticello, Florida. Extension specialists from Florida and Georgia provided growers from across the state with information about current pecan production practices and management tips. Pesticide continuing education units (CEUs) were provided for Florida and Georgia pesticide applicators, as well as for Certified Crop Advisors. Simpson Nurseries of Monticello sponsored a barbecue lunch for the attendees.

The focus of the Pecan Field Day was primarily on production practices. Speaker topics included Best Management Practices (BMPs) and cost-share opportunities for growers, weed management, fertility, pecan scab management, insect pest management and information regarding new pecan varieties. The following provides a short summary of topics discussed by each speaker, followed by links to download PDF (printable) versions of the presentations given at the Pecan Field Day.

BMAPs, BMPs and Cost-Share Opportunities

Dr. Andrea Albertin, UF/IFAS Water Resources Agent provided information on the implications of the 2016 Florida Water Bill. According to this bill, farmers in a Basin Management Action Plan (BMAP) can choose to either: (1) enroll in the Florida Department of Agriculture and Consumer Sciences (FDACS) (BMP) program and implement BMPs or (2) monitor water quality on their farm. Currently, in the Florida Panhandle there are several BMAP areas: Wakulla Springs, Wacissa Springs, Jackson Blue Springs and the Suwannee River Basin. There is financial assistance available from FDACS, NRCS, water management districts, and the Mobile Irrigation Lab for farmers enrolled in the BMP program.

Presentation link: Albertin – BMAPs BMPs and Cost-Share

 

Herbicides for Pecan Orchards

Dr. Peter Dittmar, UF/IFAS Weed Specialist shared information on the current herbicides labeled for use in Florida pecan production. It’s important to know which weed you are targeting and selecting the proper herbicide for its control. He also discussed the benefits of using a pre-emergent herbicide to reduce the use of post-emergent herbicides and to decrease the likelihood of building herbicide resistant weed populations.

Presentation link: Dittmar – Herbicides for Pecan

 

Pecan Fertilization

Dr. Lenny Wells, UGA Pecan Specialist discussed the importance of proper fertilization for young and mature pecan trees. Leaf sampling between July 7th and August 7th are the most effective means of determining nutrient requirements, and soil sampling should be done in the fall/winter to determine pH and toxicities.

Presentation link: Wells – Pecan Fertilization

 

Pecan Scab Management

Dr. Clive Bock, USDA-ARS-SEFTNRL Plant Pathologist spoke on the proper fungicide spray distribution and coverage for effectively managing pecan scab. He stressed the importance of rotating fungicide modes of action as resistance is an issue. Phosphite fungicides are effective for controlling pecan scab on the fruit and the foliage. There are organic options available for managing pecan scab.

Presentation link: Bock – Pecan Scab Management

 

Management of Common and Occasional Pests of Pecan

Dr. Ted Cottrell, USDA-ARS-SEFTNRL Entomologist discussed managing the black peach aphid using gibberellic acid, a plant growth regulator. He also talked about mating disruption as a possible control for the pecan nut casebearer and the hickory shuckworm. Mating disruption prevents the male insect from finding the female, thus the mating process is disrupted. There are several types of scale insects that occur on pecan, and timing insecticide applications to the crawler stage are effective.

Presentation link: Cottrell – Insect Pest Management

 

New Pecan Variety Releases

Dr. Patrick Conner, UGA Pecan breeder provided variety data from trials in Georgia demonstrating trends in pecan performance. The pest resistance, yield, nut quality and tree attributes for several varieties were discussed. He also discussed tree availability for different varieties.

Presentation link: Conner – Pecan Cultivars

 

Sponsors

Sponsors of the 2018 Florida Pecan Field Day included Farm Credit of Northwest Florida, Savage Equipment of Georgia and Simpson Nurseries.

Florida Pecan Growers Association

Following the Pecan Field Day, the Florida Pecan Growers Association met for their annual meeting. The Florida Pecan Growers Association is looking to grow their organization and connect with pecan producers across the state. If you are a current or prospective pecan grower in Florida and are interested in becoming a member of the Florida Pecan Growers Association, please contact me. The Florida Pecan Growers Association will hold their next meeting at 9:30 EDT on March 1, 2019 at the Jefferson County Extension Office (2729 W. Washington Hwy. Monticello, FL 32344).

For more information on pecan production or about upcoming educational events, contact your local extension office.

Art, Garden & Farm Family Festival – October 6

Art, Garden & Farm Family Festival – October 6

Bring the whole family for a fun day at the NFREC Art & Garden Festival and talk with agricultural scientists about new crops, methods and equipment for modern farming.

As the weather cools and plants perk up, join us for a day of fun activities for the whole family! View farm animals and equipment, and talk with agricultural scientists about new crops, methods and equipment for modern farming. Take a stroll through the new botanical garden or hop on a tractor-trolley for a tour highlighting fruits and nuts for our area. Speak with experts about all your gardening questions, or purchase unusual, hard-to-find, top-performing plants for your garden.  Children’s arts and crafts activities will take place in a huge “Kid Zone” located in a shaded area of the garden area.  Local arts and crafts will be for sale, and food and beverages will be available.

The University of Florida/IFAS will host the Art, Garden & Farm Family Festival on Saturday October 6, at the North Florida Research and Education Center (NFREC), Quincy Campus. The event will be held form 9:00 am to 2:00 pm EDT. NFREC Quincy is located off Pat Thomas Highway, State Road 267, at 155 Research Road, Quincy, FL, just north of I-10 Exit 181,  or three miles south of Quincy, Florida.

The event is free and open to the public.  For more information: http://nfrec.ifas.ufl.edu/art-and-garden/

New North Carolina Tomato Varieties Offer Disease Resistance and Better Flavor

New North Carolina Tomato Varieties Offer Disease Resistance and Better Flavor

Dr. Randy Gardner discussing NC State tomato varsity trials. Photo Credit: Matt Lollar

A few weeks ago I was lucky enough to attend North Carolina State’s Tomato Field Day, at the Mountain Horticultural Crops Research and Extension Center in Mills River, NC.  Every summer crowds flock from all over the Southeast to learn what’s new in the world of tomatoes.  Since it’s not always convenient for you to drop what you’re doing to make a road trip to North Carolina, I’ll highlight something I learned from the field day.

New Varieties with Dr. Randy Gardner and Dr. Dilip Panthee

Dr. Randy Gardner is a retired tomato breeder from NC State with more than 30 years of experience.  Dr. Dilip Panthee is NC State’s newest tomato breeder.  Both are working on developing new cultivars with both disease resistance and an added emphasis on flavor.  The three main diseases they are focusing on for resistance and/or tolerance are Late Blight, Bacterial Spot, and Verticillium Wilt Race 2.  See the list below of some of their newest releases.  Just remember that these varieties were developed for North Carolina growing conditions, so it’s recommended that you give them a try on a small scale to evaluate them for your area.The varieties listed in the table above are available in the market.  For a sneak peak of what’s in store for the future, check out this poster developed by Dr. Panthee:  NC State Tomato Variety Replicated Trials 2018.  More details on NC State’s tomato research can be found at the Mountain Horticultural Crops Research and Extension Center website.  Thanks to NC State for an excellent field day!

Dr. Randy Gardner and Dr. Dilip Panthee, NC State tomato breeders, are working on disease resistance with an added emphasis on flavor. Photo credit: Dr. Dilip Panthee, NC State

 

Friday Feature:  Highlights from the 2018 UF/IFAS Peanut Field Day

Friday Feature: Highlights from the 2018 UF/IFAS Peanut Field Day

This week’s featured video was produced by the Panhandle Ag Extension Team to share the most important points made by the six speakers at the 2018 Peanut Field Day.  The event was held August 23, 2018 near Marianna at the North Florida Research and Education Center.  Topics discussed at the Field Day included: new peanut varieties, managing insects, fungal diseases, and weeds in peanut fields, the fertilizer value of peanut vines for the ensuing cover crop, and the Wildfire and Hurricane Indemnity Program being offered to farmers by USDA’s Farm Service Agency.

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If you enjoyed this video, you might want to check out the featured videos from previous weeks:  Friday Features

If you come across an interesting or humorous video, or a new product innovation related to agriculture, please send in a link, so we can share it with our readers. Send video links to:  Doug Mayo

Escambia County Equine Field Day – September 8

Escambia County Equine Field Day – September 8

The upcoming Equine Field Day was designed to train horse owners on key areas of management: vaccinations, hoof & leg care, nutrition, pasture weed control, and exercise physiology. Photo credit: Doug Mayo, UF/IFAS

The Escambia County Equine Field Day is a hands-on learning opportunity for horse owners and enthusiast in the western Panhandle of Florida. Participants will be educated in the areas of equine vaccinations, hoof & leg care, nutrition, pasture weed control, exercise physiology, and other relevant topics. Industry professionals, extension faculty and a local veterinarian will lead interactive workshops to engage the audience in current topics related to the Florida equine industry.

Agenda

8:30       Registration/check-in
9:00       Welcome/Introductions
9:15       Morning breakouts I (25 min each)
              Hoof & Lower Leg Care for Durability
              Equine Spinal Manipulation for Increased Performance
10:15     Break/informal meeting with speakers
10:45     Morning breakouts II (25 min each)
              Pasture weed management of invasive & noxious weeds
              Equine biosecurity & Vaccination Protocols
11:45     Lunchtime topics (lunch provided)
              Budgeting for Nutrition Management of Your Horse
              USDA Assistance for Equine Operations (NRCS)
1:00-1:30 Wrap-up, Evaluations & meeting time with Speakers


Register today to save your spot at the upcoming Equine Field Day. UF/IFAS Photo by Tyler Jones.

 

The Escambia County Equine Field Day will be held at the Escambia County 4-H Livestock Facility at 5701 Highway 99, Molino, FL 32577.

Pre-registration is requested to ensure adequate food preparation. The cost of registration is $10 per person, but free for 4-H & FFA members. You may mail your RSVP & registration fee to: Escambia County Extension Service, Attn: Nick Simmons, 3740 Stefani Rd., Cantonment, FL 32533. Please make checks payable to The University of Florida.  Registration is due by September 4th.

For more information, contact Nick Simmons, Commercial Livestock Agent, UF/IFAS Extension Escambia County, 850-291-7173 or n.simmons@ufl.edu.