Friday, October 21, 2011
Also, if you think I have a strong northern accent this video will prove you wrong!
About the Program:
Madison County Cooperative Extension along with The Very Small Business Center will be hosting an Agritourism workshop on November 8th from 6-9 pm. Experts from the NC Department Agriculture, local agritourism businesses, and business specialists will share useful resources as well as address challenges related to permits, regulations, planning, developing and marketing successful agritourism enterprises. To register please call the Madison County Cooperative Extension office at 649-2411 or email firstname.lastname@example.org.
For agritourism resources, visit the WNC Veggies and Small Fruits Agritourism Page
Thursday, October 20, 2011
The entire list of awards and projects can be found here.
Some of the projects include:
- Developing an inexpensive, accurate, easy-to-use biosensor for the detection of Salmonella contamination of fresh globe fruits (tomatoes, cantaloupes and watermelons) - Auburn University
- Developing biorenewable and biodegradable containers as a greener alternative to the petroleum-based pots used in the container specialty crop industry - Iowa State University
- Identifying and developing improved basil varieties with resistance/tolerance to downy mildew, Fusarium wilt and chilling-injury - Rutgers University
- Advancing the productivity and profitability of U.S. fruiting vegetable enterprises by integrating grafting technologies into tomato and melon production systems - NC State University
- Improving the long-term viability of the fresh U.S. grown mushroom industry by marketing mushrooms as an excellent source of Vitamin D - St. Joseph's University
Wednesday, October 19, 2011
Join eOrganic and Michigan SARE for a series of 4 free webinars on marketing organic produce, organic transplants, food safety, and hops production in October and November! All webinars are open to the public, and advance registration is required.
Save the dates and register now at for the following webinars at http://www.extension.org/
Plan for Marketing Your Organic Products, by Susan Smalley, Michigan State University: October 25, 2011 at 2PM Eastern Time. Register at http://www.extension.org/
Root Media and Fertility for Organic Transplants, by John Biernbaum, Michigan State University: November 1, 2011 at 2PM Eastern Time. Register at http://www.extension.org/
Tracking Your Produce—For Your Business and Health, by Colleen Collier Bess, Michigan Department of Agriculture and Natural Resources: November 8, 2011 at 2PM Eastern Time. Register at http://www.extension.org/
Starting Up Small-Scale Organic Hops Production, Rob Sirrine, Michigan State University and Brian Tennis, Michigan Hop Alliance: November 15, 2011 at 2PM Eastern Time. Register at http://www.extension.org/
Find the updated eOrganic webinar schedule and listen to recordings of past presentations at http://www.extension.org/
Tuesday, October 18, 2011
Changing Consumer Demand Affects Small Fruit
Tim Nourse, owner of Nourse Farms in western Massachusetts- one of the largest plant suppliers- discusses how the consumer changed the small fruits landscape. In addition, Dr. Eric Hanson of the Michigan State University Horticulture Department discusses how California production of small fruit changed the industry.
Monday, October 17, 2011
Some of you may be interested in this information especially in light of the Bt resistance that has been identified: Researchers Identify Insect Resistant to Bt Pesticide.
Thanks to Gene McAvoy in Hendery County Florida for passing along this great info!
Bacillus thuringiensis, the active ingredient in the “Bt” insecticides, is a commonly occurring soil bacterium that was first discovered in 1901. Since their commercial introduction in the 1950’s, Bt products have become the most successful and widely used of the biopesticides.
Insecticidal activity of Bt derives from proteins that are produced and crystallize during bacterial sporulation (thus referred to as “Cry” toxins).
Most Bt products contain a mixture of Bt spores and toxin crystals. When a caterpillar ingests Bt, the crystals are dissolved in the alkaline gut environment. The insect’s own digestive enzymes convert the protein to an activated “delta endotoxin” which binds irreversibly to receptor molecules on the surface of cells lining the insect’s midgut, opening holes in the membrane that destroy the cellular lining of the digestive tract. The larva stops feeding (typically within hours) and may die quickly from septicemia as Bt and other spores in its food germinate, or may linger and die eventually of starvation.
Many different subspecies and strains of Bt have been described, producing different combinations of unique Cry toxins. Bt insecticides used for worm control are based on two of these subspecies which produce a few important Cry toxins.
Bt subspecies kurstaki (Btk) products such as Javelin®, Deliver®, and Dipel® contain primarily Cry1A and Cry2 toxins. These give broad spectrum activity against loopers, diamondback moth, imported cabbage worm, tomato fruitworm/corn earworm, tobacco budworm, hornworms, and other defoliating caterpillars common to vegetable production.
Xentari® and Agree® are based on Bt subspecies aizawai, which produces another toxin (Cry1C) effective against beet armyworm and other Spodoptera species, which are not very sensitive to Cry1A toxins.
Agree® contains a “hybrid” Bta, the offspring of a cross (transconjugation) between parent strains of Bta and Btk. As a result, Agree contains Cry1Ac (from Btk) in addition to Cry1C (from Bta). Other products such as Condor® represent unique combinations of Cry toxins resulting from transconjugation between different Btk strains.
Still other advanced Bt’s are products of genetic engineering to create unique Cry toxin combinations or higher levels of expression. CryMax® is such a recombinant Btk product, producing high levels of Cry1Ac in addition to Cry1C. Lepinox® is engineered for high expression of a combined Cry1Ac/Cry1F toxin particularly effective against fall armyworm (Spodoptera frugiperda), which is not highly susceptible to other Cry toxins.
All Bt products must be ingested by the target caterpillars in order to be effective, and small larvae in earlier stages of development are more susceptible than large, mature larva. This means that proper spray timing and technique are important to ensure that vulnerable plant tissues are uniformly covered by Bt spray deposits when young larvae are actively feeding. Worms that enter fruit or stems soon after egg hatch (such as squash vine borer, melon worm, and European corn borer) or are protected within mined or rolled leaves (such tomato pinworm) are susceptible to Bt if applied before they enter these protected environments.
Bt is not a systemic insecticide and tends to have shorter residual effect compared to many chemical insecticides (one of the reasons they present little risk to the environment, workers, and consumers). Reapplication may be required, especially during periods of rapid crop growth when new, untreated tissues may be exposed to infestation. Be sure to read the Bt product label for specific information regarding crops, target insects, and application instructions (such as rates, timing, and reapplication intervals).
Bt in IPM and Resistance Management
Bt insecticides are an ideal tool for the grower focused on IPM due to their selective control and low environmental risk. Bt also provides a unique mode of action (IRAC group 11) that can complement other insecticides in resistance management strategies. No evidence of cross-resistance has ever been detected between Bt and other insecticides; insects resistant to multiple classes of insecticides are still susceptible to Bt. Btk and Bta products also can be rotated to reduce risk of resistance to specific Bt’s.
At a recent symposium on “Insect Resistance in Vegetable Production” organized by the Entomological Society of America (Southeastern Branch), entomologists and IPM specialists (including Dr. Dakshina Seal of IFAS in Homestead) pointed to Bt products as the best rotational partners for delaying resistance to new insecticide chemistries such as the diamides.
Symposium participants listed the following benefits of Bt insecticides in a rotation program:
• High efficacy on a wide variety of worm pests
• Very low impact on beneficial insects.
• Avoidance of secondary pest problems.
• Not toxic to bees and predatory mites.
• No preharvest interval required after application.
• No restrictions on amount used.
• Resistance to Bt is slower to develop than resistance to chemical insecticides.
Through proper field scouting, correct identification of the worm pest, good timing of applications, correct selection of the Bt used, and judicious application of the Bt’s in rotation with new or older conventional chemistries, growers can gain effective control while reducing the risk of resistance and maintaining beneficial insect populations.
For more information contact Dr. Brett Highland, Certis USA, at email@example.com, or visit www.certisusa.com.
Tuesday, October 11, 2011
You can download or view the pdf here: http://www.
In this version you will find:
- A Special Report on Exobasidium Fruit and Leaf Spot on Blueberries
- Can Raspberries Be Picked Pink for Fresh Markets?
- Information on the 2011 Strawberry Expo in Durham, Nov 6-8
- Fumigation and the Options to Grow Strawberries Without Fumigation
- Blackberry Flavor: Improvement is Key for Fresh Market Expansion
- E. coli Outbreak on Oregon Strawberries
- Blackberry and Raspberry Season Checklist
- Quarterly Strawberry Grower's Checklist
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Facebook: Team Rubus