Pam Marrone, co-founder of Invasive Species Corporation, and previous founder of two additional biological businesses, shared her key takeaways with certified crop advisers during a recent webinar hosted by the Science Societies.
Marrone says there are three areas to evaluate before farmers make an application of a biological product:
- Specific use instructions
- Science
- Data
Specific Use Instructions
“First, read the label,” she says. “When do I use it? What’s the timing? Is there any effect on soil? Can I tank mix it? Can I mix it with fertilizer? Can I mix with other pesticides? Some of the labels I’ve seen can be very specific, and others give you almost no information. So, that’s important. Read the label.”
In reviewing label information, identify if the product is registered with the EPA (which requires a higher level of requirements) or non-registered. Also, the specificity provided on the label is an indicator about the overall product quality and performance.
“There are products that are bugs in the jug, and they have a consortium of microbes in the jug or bag. If the product has 500 or 800, it should be proven why all those specifies are necessary, and if quality control is being done on all 500 species,” Marrone says.
Marrone has been working toward one national certification of products to eliminate any issues with heavy metals or human pathogens being included in formulations.
“Quality control measures need to be robust,” she says.
Science
Marrone says in order to draw a line between “snake oil” and reputable products, the manufacturer and the retailer should be able to explain the science behind the product.
“It’s no longer good enough to just say ‘we have the best microbes,’” she says.
For best placement and performance, Marrone emphasizes the importance of understanding how the biological works.
Data
Marrone encourages farmers to seek out significant proof of field data.
“Small plots don’t always work with biologicals,” she says. “And when you are looking at field data, know where the trials were conducted and what the consistency was.”
Marrone believes today’s biological industry has progressed to a new performance threshold.
“These days, you really want to see a win rate of at least 80%. So, 80% of the time you’re seeing a yield increase of at least 7% —anything below that is just noise,” she says. “I know companies today getting consistent 10% yield increases. That’s where the bar has been raised to.”


