Plant Health

Integrated control of thrips webinar
The American Floral Endowment is offering a free Grow Pro Webinar Series session on integrated thrips control at 1 p.m. EST, on August 20, 2024. Speaker Rose Buitenhuis from Vineland Research and Innovation Centre will... more »
Setting ground rules for biostimulants
Biostimulants have long been unregulated inputs in the U.S. This has allowed hundreds of them to come to market lacking levels of quality control, thirdparty testing and other user-oriented information on use and efficacy. Some... more »
New soil moisture meter geared for greenhouse, potted plants
Innoquest Inc. has introduced the SpotOn Pocket Soil Moisture Meter, a handheld device designed for greenhouse growers and potted plant enthusiasts. This meter provides quick, accurate readings of soil moisture, pore and bulk electrical conductivity... more »
Selecta One signs agreement to use Dümmen Orange’s Intrinsa
Dümmen Orange's disease resistance label Intrinsa will now be used by ornamental breeder Selecta One, according to the new global licensing agreement between the two companies. Under this agreement, Selecta One will breed and market... more »
Dr. Bugs: Biological control agent of Western flower thrips
Answer: The predatory mite you are referring to is Neoseiulus, also known as Amblyseius cucumeris. Neoseiulus cucumeris can be released into greenhouse production systems to manage Western flower thrips (Frankliniella occidentalis) populations on ornamental and... more »

Start clean, stay clean in the greenhouse
I’d love to get your perspective on greenhouse sanitation and how that affects insects and diseases taking over in the greenhouse. Nancy Rechcigl (NR): We have a phrase, “start clean, stay clean,” and that’s really... more »
Duets: Plant pathology perspective from floriculture royalty
Joining me today is Margery Daughtrey, Ph.D., senior Extension associate at Cornell University’s Long Island Horticultural Research & Extension Center in Riverhead, New York. Margery earned her bachelor’s degree at The College of William and... more »

Editor’s Letter: Labor updates
Labor challenges continue in the industry. We wanted to find out how growers are currently holding up and what they are doing to combat the issues. GPN’s labor survey report found that 45% of participants... more »

Plant health and biologicals for disease management
Biological control refers to the use of natural enemies to control pests and diseases. Biocontrol agents include predators and parasitoids (macroorganisms), as well as microorganisms (microbial biopesticides). Biopesticides are “pesticides derived from natural materials,” according... more »

Rotating chemical treatments
Pest control chemistry options are aplenty in the greenhouse industry — they all have different strengths and target insects, weeds and disease. When putting together an integrated pest management (IPM) plan, growers must consider how... more »