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Crop protection


EU takes Italy to court over Xylella plant disease

Italy has been referred to the Court of Justice of the European Union (CJEU) for failure to comply with clean air regulations, the European Commission said in a statement on Thursday in which it said it is "standing up for Europeans' need to breathe clean air".In a separate statement out Thursday, the.....

Spring fling

Over the past few weeks I’ve spoken with growers who have had to discard plants due to pest damage, infestation, and/or disease. This is always frustrating to say nothing of impacts on marketing and the bottom line, though in some cases might be the best alternative given time and expense for rescue.....

Monitoring growth, pests and diseases

The greenhouse nowadays is a specialized high tech production system for a wide variety of crops. Due to its large scale, it is impossible for a grower to monitor and control all plants individually. This, combined with other factors like an inhomogeneous climate, complex IPM in which the biological balance.....

Canadian growers get new tool against Fusarium wilt

Canadian protected ornamental growers now have a new preventative tool against Fusarium wilt, thanks to the launch of Asperello T34 Biocontrol by Biobest.This new biofungicide contains the unique, naturally occurring, beneficial fungus Trichoderma asperellum T34 at a high concentration (1012 CFU/kg). It.....

US: The continuing story of impatiens downy mildew

The more we learn about impatiens downy mildew (IDM), the more intriguing and cunning this disease seems. It came to light in 2004 after widespread infections were reported in several states throughout the US but then receded from the spotlight for several years. Since 2011, IDM has been more consistently.....

US (MI): What’s new in Botrytis control research?

The fungus Botrytis cinerea infects many greenhouse ornamentals. Recognizing Botrytis disease isn’t difficult. Common symptoms include leaf spots and blight, and stem cankers (Photo 1). Botrytis’ signature calling card includes the production of large masses of gray conidia or spores (“seeds” of the Botrytis.....

New Zealand: Myrtle rust found in Porirua

Porirua City Council admits it was only a "matter of time" before the deadly tree fungus myrtle rust was found.The council confirmed its presence on a row of ramarama shrubs on Parumoana St, opposite the Pak 'N Save supermarket, on Friday afternoon.Council staff plan to remove the infected bushes on.....

Californian flower thrips: a recipe for control

If you want to bake a cake you need a recipe as well as the ingredients. It’s a similar situation when combating Californian flower thrips (frankliniella occidentalis) in cut roses, where the ingredients are enough in themselves to keep the plants healthy. The recipe, i.e. the combat strategy, is becoming.....
PGRs on perennials

Configure on lobelia cardinalis

With the crazy spring we’ve had this year, some of your perennials may be needing a little help to get ready for market, especially if you are using a bedding plant production model to fast-track your herbaceous perennials. If you haven’t already applied Configure (BA, Fine Americas), or, even if you have,.....

"Biocontrol is not for the impatient grower"

Carnation Instant Breakfast was in vogue while I was growing up in the 1960’s. The milk based wonder-food was sure to get you going in the morning while simultaneously meeting all of your nutritional needs. Carnation’s Instant Breakfast led the way for a generation of consumers who expected “instant” results.....

New Guinea impatiens induced by low substrate pH

US: "Lower leaf chlorosis, spotting, and necrosis"

New Guinea impatiens grown in substrates below the optimal pH range of 5.8 to 6.4 may exhibit lower leaf chlorosis (yellowing), interveinal chlorosis, red-to-black spotting along leaf margins and between veins, and marginal necrosis of the lower foliage.In-house nutritional monitoring is an excellent.....

Pathogen profile: Sclerotium

Sclerotium is a fungal pathogen that can cause considerable crop damage, but it is more common in the warmer climates of the southern United States. It can be brought to the northern United States and Canada on infected plants grown in the southern regions.The most common species that attacks greenhouse.....

New website for Koppert US:

US: "Assisting growers in finding correct solutions"

Koppert Biological Systems, Inc., a subsidiary of the world’s leader in biological pest control, has introduced a new and improved website, KoppertUS.com. The website is designed specifically to provide a user-friendly experience in which growers gain easy access to local crop-specific solutions.....

Powdery Mildew on Crassula

Powdery mildew is often one of the easiest plant diseases to identify. The light colored fungal growth is usually easy to see on plant surfaces, and the dusty/powdery spots and patches are a tell-tale sign of powdery mildew. However, in some cases symptoms may not be so obvious. One recently seen example is.....