Welcome to the BioWorks Bulletin - July 2014
We hope everyone has been enjoying their summer! Here in the northeast we have been having sunny days, cool nights, and frequent thunder showers. During this time of year it's a good opportunity to review the past growing season and plan for the next. In this Bulletin we will explore resistance management techniques using biopesticides. Consider that combining two biopesticide products - and even pairing synthetic and biopesticide products - can help growers keep problems under control.
Resistance Management with Biopesticides
Matthew Krause, Ph.D., Product Development Manager

The use of biopesticides has become a common practice in manyhorticultural crop protection programs. Biopesticides are effective tools in integrated pest management (IPM) programs for helping to manage resistance to synthetic chemical pesticides and reduce worker and environmental exposure to synthetic pesticides. Multiple studies have documented the development of resistance by pathogen and pest populations to chemical pesticides. Conversely, the risks of developing resistance to biopesticides are extremely low -- even as biopesticide use continues to increase.
Bacillus feeding on fungal pathogen

The efficacy of each synthetic pesticide developed over the past 60 years is generally based on one mode ofaction (MOA) that disrupts or inhibits a specificbiochemical pathway or biological function of the target pest. Continuous, extensive and intensive use of synthetic pesticides can inflict very strong and widespread selective pressure on pest and pathogen populations, resulting in rapid emergence of resistant or tolerant pests and pathogens. This phenomenon is also commonly experienced with human and veterinary pathogens where antibiotics have been used extensively, and, often, unnecessarily. In fact, pesticides are grouped into classes based on their MOAs, and end-users are specifically instructed not to over-use certain classes of chemical pesticides.

Nearly all biopesticides are most effectively used as preventive treatments. Since they deploy multiple MOAs to suppress pests and pathogens, development of resistance to these multiple factors by target organisms is extremely unlikely. Combinations of two or more of the characteristics described below prevent the development of resistance to biopesticides.
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One Grower's Comments: 

"We began using RootShield in the spring of 2005, we have been very pleased with the product. On plugs, bedding, and cuttings we have seen increased root vigor and reduced incidence of Botrytis and Pythium".  


Chris Culbertson, Garden Springs Greenhouse   

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Upcoming Events

Southern Nursery Association

July 22-24

Atlanta, GA  

Penn Atlantic Nursery Trade Show
July 30-31
Philadelphia, PA

Summer Green Road Show
August 13-15
Raleigh, NC
(Dr. Chris Hayes gives presentation; "Biological Control: Good Critters that can Attack, Eat & Kill Your Pests and Pathogens" on Thursday, Aug. 14, 2014, 10-11 am at Raleigh Convention Center in Rm 306A) 


Farwest Show

Booth #6056

August 21-23

Portland, OR 

Plug & Cutting Conference

Booth #28

September 22 - 24
Orlando, FL 

(Dr. Matthew Krause gives presentation; "BioControl of Young Plant Pest Problems" on Monday, Sept. 22, 2014, 1-5pm.)
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BioWorks Inc, P: 800.877.9443   F: 800-903-2377
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