August 2, 2012

Benefit From Beneficial Nematodes

With a variety of factors driving pest management changes in horticultural operations, many professionals are looking to expand their use of biological control agents (BCAs), including the use of beneficial nematodes. Growers find beneficial nematodes to be an attractive addition to existing pest management programs because they reduce or eliminate restricted-entry intervals, have limited impact to worker and customer safety, promote environmental stewardship and are valuable pesticide resistance and residue management tools. While great strides have been made in the development of effective beneficial nematodes over the past several years, there is still confusion among growers about these little worms. How do they work? Do they cause damage? How should I use beneficial nematodes in the greenhouse? Read on to learn the answers to these questions and more. How Beneficial Nematodes Work Beneficial nematodes, also known as entomopathogenic nematodes or insect-parasitic nematodes, are microscopic, un-segmented roundworms. They are naturally-occurring and […]

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July 27, 2012

Arm Your Poinsettias Against Key Insects

Whiteflies. To keep whitefly populations under control, drench the growing media with a neonicotinoid (MOA Group 4a) insecticide (e.g. Flagship), three to four weeks after planting (or after pinch). Before the neonicotinoid soil application, use products labeled for whitefly management, such as Avid, Endeavor, Scimitar GC, Talstar, Sanmite, Distance and Judo insecticides. If late-season control is needed, spray with Avid, Flagship, Talus or Tristar (only if a Group 4A was not drenched) insecticides using a spray adjuvant like CapSil. Thrips. Avid, Botanigard, Conserve, Mesurol, Tame/Orthene tank mix (or total release aerosol) and Overture insecticides are some of the products used successfully for thrips management. After bracts form, use Avid or Conserve. Fungus Gnats And Shore Flies. Good sanitation procedures are still the first line of defense for controlling fungus gnats and shore flies. Options for controlling fungus gnat larvae include Azatin XL, Citation, Distance, Duraguard ME, Gnatrol insecticides or beneficial […]

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June 26, 2012

Case Study: Improper pH Of Spray Solution

Have you checked the pH of your spray solution? It could be affecting the effectiveness of of your insecticides and miticides. Get all the details in this case study  from Ray Cloyd in this episode of FloriCAST.

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April 10, 2012

Impending Elimination Of IR-4 Threatens Floriculture Products

GG: What impact would the elimination of IR-4 have on chemical companies like BASF? Would it affect chemical companies’ ability to best serve floriculture? SL: The IR-4 program allows BASF to offer effective plant protection chemistries to so called ‘minor crop’ users. That means nursery, greenhouse and landscape managers have a wider arsenal of products to use for pest management. IR-4 funds expand the testing of our chemistries to other crops, on more pests and in additional markets. For BASF, that means we have more products to offer growers. Without the IR-4 program, we probably could not afford the extensive testing required to effectively bring all the products in our portfolio to market. GG: Would you envision chemical companies having to take on the responsibility of conducting the floriculture research that leads to product registrations themselves? SL: BASF could take on the task of testing, but doing so would result […]

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March 26, 2012

Improper Rotation of Pesticides

Listen in on a conversation between an Extension entomologist and a greenhouse producer when a thrips outbreak happens and scouting and spray applications aren’t working.

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March 15, 2012

Miller: Saving IR-4 Critical To Greenhouse Crop Protection

Think about the high-profile plant diseases growers are encountering these days – downy mildew on impatiens, boxwood blight – and what the consequences will be if you don’t have the appropriate products to protect those plants. Take gloxinias for example. “We’ve virtually stopped growing them because we couldn’t control the pests,” says Marvin Miller, market research manager at Ball Horticultural Company. “We couldn’t solve the tomato spotted wilt virus with it. Really, we’ve had a whole list of crops we’ve stopped growing because we couldn’t control pests.” If funding for the IR-4 Project is reduced or eliminated, as Pres. Barack Obama’s 2013 budget plan is currently designed, Miller suggests the list of crops growers no longer produce will grow longer. According to OFA, Congress currently provides about $15 million to IR-4, which was established in the 1960s to facilitate the registration of safe and effective crop protection products for specialty […]

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March 13, 2012

Adopt Biological Control Agents For Greenhouse Crop Production

Many greenhouse growers no longer rely exclusively on conventional pesticides to control pests. Most have increased their use of mechanical and biological control agent (BCA) methods. While pesticide resistance issues have driven much of this change in management philosophy, many growers are now discovering how well BCAs work and how to easily incorporate them into pest management programs. Many greenhouse growers have found that BCAs can be used to achieve commercially acceptable levels of control. However, a few remaining growers believe that BCAs are not practical to implement. The barriers that impede adoption of BCAs typically include the perception that they are less effective than their conventional pesticide counterparts and require special skills and knowledge for success. Performance barriers often can be addressed by implementing preventative use strategies and by fully adopting principles of integrated pest management (IPM) rather than as a direct replacement to conventional pesticides. Development of pest […]

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February 22, 2012

Improving Pesticides With Surfactants

What are surfactants and what do they do? Get a quick tutorial from Ray Cloyd on how surfactants can improve the performance of your pesticides.

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February 15, 2012

SePRO Corporation Introduces New Preferal Biological Insecticide

SePRO Corporation announced on January 26, 2012 that it will introduce its new Preferal Biological Insecticide to the United States commercial greenhouse, nursery and landscape markets.  Preferal contains blastospores of a naturally-occurring strain of the fungus Isaria fumosoroseus, which has demonstrated very good control of whitefly, aphid, thrips and spider mites.  Certis USA,has entered into a marketing-and-supply agreement with SePRO to market and further develop Isaria fumosoroseus in the U.S. greenhouse, nursery, landscape and turf markets.  Preferal is being used successfully by European growers today in integrated pest management programs to provide control of all life stages of whitefly.  This insecticide is formulated as a water dispersible granule that is mixed with water and applied as a spray.  Spores of Preferal then attach and penetrate the cuticle of targeted insect pests.  The fungus grows inside the insect, causing its death.  Under favorable environmental conditions, the fungus will emerge from killed […]

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February 15, 2012

Kontos Label Revised

The Kontos insecticide/miticide label was recently revised to help increase product performance. Soil drench application rates have been increased and thrips and scale crawlers have been added to the label. Kontos has unique features that set it apart from most other products such as true up-and-down movement in the plant.  It is both foliar and root absorbed. Kontos is phloem-active, meaning users can spray and be assured the active ingredient, spirotetramat, moves down in the plant. When applied as a foliar spray, a spreader-sticker may improve performance. Growers can also soil drench Kontos. Because it is xylem-active, the active ingredient will move up systemically through the roots to the growing tips. Soil drench rates have been increased to offer better control of hard-to-control insect pests. “The best way to use Kontos is early in the crop cycle when insect populations are low and the product has time to work,” says […]

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February 13, 2012

Mid-American Making Biologicals Work

Tom Costamagna, the director of plant quality at Mid-American Growers, shares the Top 100 Grower’s success with biological insecticides like NoFly and Met52. Costamagna also discusses how such products are helping the business deal with the reality that fewer new chemistries are coming to market.

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January 26, 2012

Biopesticide Resistance And Selective Pesticides

Insects Resistant To Biopesticides There are many instances in which insect pest populations have developed resistance to selective (alternative) pesticides or biopesticides. Here are several examples: • Green peach aphid (Myzus persicae) resistant to azadirachtin (e.g., Azatin) • Western flower thrips (Frankliniella occidentalis) resistant to spinosad (e.g., Conserve) • Leafminer (Liromyza trifolii) resistant to both spinosad (e.g., Conserve) and abamectin (e.g., Avid) • Greenhouse whitefly (Trialeurodes vaporariorum) resistant to buprofezin (e.g., Talus) • Sweet potato whitefly B-biotype (Bemisia tabaci) resistant to pyriproxyfen (e.g., Distance) • Diamondback moth (Plutella xylostella) resistant to Bacillus thuringiensis spp. kurstaki (Dipel) Selective Pesticides Categories of pesticides (insecticides and miticides) used in greenhouses or nurseries that may be considered as either selective (alternative) pesticides or biopesticides, including the common name (=active ingredient) and trade name (in parentheses): Insect Growth Regulators • Azadirachtin (Azatin, Ornazin, Molt-X and Azatrol) • Buprofezin (Talus) • Cyromazine (Citation) • Diflubenzuron (Adept) […]

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