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Greenhouse hygiene programs emphasize deep-penetration sanitation during cleanouts

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5 months ago

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During winter clean-ups, greenhouse operators prepare facilities for the next production cycle, with hygiene remaining a critical focus. Effective sanitation during crop transition plays a key role in reducing pathogen pressure and promoting long-term crop health, particularly in operations that manage virus risks such as Tomato brown rugose fruit virus (ToBRFV).

Disinfectants commonly included in greenhouse hygiene programs include Intra Multi Des GA, supplied in North America by Houweling Americas. “This product is widely used by vegetable and ornamental growers as part of comprehensive cleaning and routine sanitation strategies, especially where deep penetration is required on complex surfaces,” says the Houweling Americas team.

© Houweling Americas

Getting under the surface
Biofilms and organic debris continue to limit the effectiveness of many disinfectants, harboring microorganisms in cracks, crevices, and porous materials. According to the Multi Des GA technical team, the formulation is designed to address this challenge through penetration rather than surface activity.

“Intra Multi Des GA has five active ingredients that work together to provide strong penetration properties, allowing the product to reach microorganisms hiding in difficult access areas,” the team explained. While not positioned as a dedicated biofilm remover, the formulation is intended to reveal and eliminate pathogens sheltered beneath biofilm layers.

For best results, a two-step sanitation approach is recommended: deep cleaning to remove organic matter and biofilm, followed by disinfection. “Skip the cleaning step increases the risk of completely eliminating pathogens,” the team noted, highlighting the continued opportunity for farmer education around proper hygiene sequencing.

The role of cleaning before disinfection
As part of the Intracare product portfolio, Houweling Americas also supplies Intra Foam Organics, a cleaner designed to remove organic material prior to disinfection. Organic debris can significantly reduce disinfectant performance if not completely removed, especially on high-traffic or porous surfaces. When used as a first step, cleaners like Intra Foam Organics help ensure that disinfectants can come into direct contact with target pathogens.

Performance on porous and uneven surfaces
Concrete floors, block walls and other porous greenhouse materials remain among the most difficult areas to sanitize. According to internal tests, Intra Multi Des GA works reliably on these surfaces, moving into the micro-cracks where pathogens can persist.

“When applied to porous materials such as concrete blocks, the formulation moves significantly across the substrate,” the team explained. “This behavior is different from traditional disinfectants that remain on the surface and do not reach the embedded microorganisms.”

© Houweling Americas

Broad spectrum pathogen control
Growers of all types of crops rely on Intra Multi Des GA to manage a wide range of pathogens, including fungal, bacterial and viral threats. The reported efficacy against ToBRFV has made it an essential component of hygiene protocols in tomato production.

“Intra Multi Des GA has shown excellent efficacy against ToBRFV and has proven effective in eliminating the virus on contact when used appropriately,” the team reported. Beyond viral control, growers also use the product against pathogens such as Fusarium and Pythium in crop and ornamental systems.

Waste behavior and crop turnover
Unlike non-residue disinfectants, Intra Multi Des GA is designed to leave a residual effect on treated surfaces during cleaning, providing extensive protection between crops. This waste is not intended to come into contact with the collected products, but is used to maintain sanitation during downtime.

Operational efficiency is another matter. The product is applied at a low concentration of use, requires a short contact time and usually requires only one application, allowing rapid crop rotations without compromising hygiene standards.

Long-term sanitation results
Growers who consistently incorporate Intra Multi Des GA have reported cumulative improvements in crop rotation hygiene programs over multiple seasons. In one documented case, a Dutch tomato operation managing ToBRFV reported no subsequent infections after integrating the product into the cleaning protocol.

“Starting clean remains one of the most effective ways to reduce the risk of early cycle infection,” the team emphasizes.

Supporting North American producers
Houweling Americas supplies Intra Multi Des GA and other Intracare solutions through established distribution partners and provides technical support to assist with implementation. In addition to hygiene products, the company’s portfolio includes nutrient solutions, growing substrates, LED lighting, water treatment technologies and biostimulants such as Intra Eco Shield, with Intra Boost, a next-generation willow bark-derived biostimulant, scheduled for a North American launch in early 2026.

Based in British Columbia and Ontario, Houweling Americas works closely with growers to develop integrated solution programs that support yield, plant health and resilience. The company is part of Royal Houweling, a Dutch family business founded in 1925 and recently recognized with royal status for its long-term commitment to horticulture and sustainability.

For growers seeking technical guidance on hygiene protocols or product performance, the Houweling Americas team encourages direct engagement for further assistance.

For more information:
Houweling America
1-800-252-5824
houwelingamericas.com

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Bountiful Farms goes best in New England at NECANN Cup

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7 hours ago

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May 25, 2026

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Bountiful Farms placed first and second in the licensed solvent-free concentrate division at this year’s NECANN Cup, then also won the mixed licensed and unlicensed division to win best overall, putting the Massachusetts operator in the running for best in show with the highest-scoring product in New England.

© Bountiful Farms

NECANN is the largest B2B cannabis event in New England and the second largest in the country, attracting over 9,000 attendees. Everything is unbranded. Licensed and unlicensed operators in the six New England states compete only in product. Zachary Taylor, Director of Agriculture at Bountiful Farms, says the win for Maine’s craft growers means a lot to him and his team. “Whenever you compete against Maine, with its regulations and the craft culture of the caretakers, to be considered a craft on our scale is the greatest honor. When you look at cups across the nation, you see cups of culture, and Maine is always well represented. To be recognized on the same playing field and to excel at this scale is very difficult, and I don’t think that’s what people mean.”

Of course, rosin isn’t given more forcefully to Bountiful Farms. But Zach in a clean way© Bountiful Farms he says, “A good raisin doesn’t appear out of nowhere. It comes from the flower.” The award-winning genetics were bred by Crystal Rose, and built around a high-resin, terpene-rich expression.

“The buds come in within 15 minutes of harvest, it’s like a timer,” Zach says. “Then we move them to a chest freezer, before moving them to an aisle freezer, where they’ll sit until they’re cleaned. All the rosin is pressed by hand in a hydraulic press.” At its scale, Bountiful Farms must use automation to achieve consistently high quality. “But we have very practical components,” he said. “The backlash of the press tells you how hard it is to go. Same approach with agitation, for example. The flower heads themselves, how we maintain the integrity of the trichome, the rise time of the wash, the temperatures: everything is handled like a small-scale race.”

That level of attention comes from the team. Matt Bearup, now a solventless QC manager, started growing and built the hash lab from the ground up all by himself. There are currently eight hash makers, all passionate about complex genetics and terpenes. Strains include not only the main terpenes, but also tasting notes and effects. Using the SC Lab framework, limonene as the current focus. “There’s not a lot of that in the hashish sector in particular. Several growers are moving in that direction.”

© Bountiful Farms

“There’s not a lot like it. Several breeders are moving in that direction.”

Bountiful Farms has been producing rosin since 2021, when the category had little traction© Bountiful Farms in Massachusetts. Since then, the company has expanded into a high-end cultivation center to produce even more rosin. They operate two production rooms and processes not only for themselves, but also for other clients including Native Sun, Breathe Free and u4ea. They have recently opened two new dispensaries, allowing them to expand into recreational retail from 2021. Another limited release of the full melt is planned, along with a dual-cartridge solvent-free pen developed with O2 Vapes, two flavors in one device.

“When you bring award-winning companies together, you get products that represent the industry at its best. Massachusetts deserves its place among the leaders in this industry. When we win, the industry wins.”

For more information:
Prosperous Farms
prosperous farm. take care of

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Federal Drug Testing Rule Will Require ‘Directly Observed’ Urine Collection From Truck Drivers

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7 hours ago

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May 25, 2026

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“A month that goes by without an oral fluid test is another month when federal employees with paruresis face anxiety, discrimination, and barriers.”

By Kastalia Medrano, Filter

The Department of Transportation will require “directly observed” urine drug testing in federal employment situations where saliva testing is required but not possible. The clarification of DOT drug and alcohol testing procedures is the latest development in a years-long push by the trucking industry. oral fluid testing as an alternative to urine testing.

The new rule was published in the Federal Register on May 11, and will go into effect on June 10.

Truck drivers, who are subject to a large number of federal regulations, do not choose the method of drug testing, while DOT-regulated employers do. The campaign to implement oral fluid testing has been led by the American Trucking Association (ATA), which believes it is necessary to “keep drivers with disabilities off the road and maintain the trucking industry’s commitment to safety.”

The Substance Abuse and Mental Health Services Administration (SAMHSA) approved lab-based oral fluid testing in 2019, and the DOT finalized its regulations in 2023 allowing employers to choose this as an alternative to urine testing. But the actual implementation requires at least. Two laboratories approved by the Food and Drug Administration to process tests—one for the initial analysis and another to confirm the results. There are currently zero.

Oral fluid testing is attractive to many employers for a number of reasons, one of which is its effectiveness in detecting drug use within hours compared to urine drug testing. While the trucking industry has become the public face of the campaign, the regulations also affect federal workers in the commercial aviation, railroad, public transportation and pipeline sectors.

One of the main concerns expressed by the trucking industry has been that urine drug screens are not visible, making it easier to avoid oral fluid testing. Another concern is paruresis, commonly referred to as “shy bladder” syndrome: if a driver can’t urinate when they need to, they’re stuck for a three-hour wait, which obviously affects their arrival time. And if they still cannot produce urine during this period, they are considered to have refused to take the test and are removed from their duties. To return, they must “pass” a urine test watched by a same-sex observer.

New DOT the rule also updates existing terminology by replacing the word “gender” with the word “sex” in accordance with President Donald Trump’s January 2025 executive order “Defending Women from Gender Ideological Extremism and Restoring Biological Truth to the Federal Government.”

“A month that goes without an oral fluid test is another month when federal employees with paruresis face anxiety, discrimination and professional barriers,” Dr. Steven Soifer, co-founder of the International Paruresis Society, said in March. “We have been working on this issue since our inception (30 years ago). Our members ask the same question every day: When will the federal government finish the work it has already approved?”

In April, at the request of ATA, six members of Congress he wrote Robert F. Kennedy Jr. to the Secretary of the Department of Health and Human Services citing FDA regulatory hurdles as the reason why laboratories in the United States are not certified to process oral fluid tests.

They cited an analysis by Quest Diagnostics that showed a 370 percent increase in “replaced” urine specimens from 2022 to 2023. Quest has its own laboratory-based oral fluid collection method, Quantisal™, and has therefore been an ardent supporter of the campaign.

On May 1, the FDA a notice with the intention of considering revising the requirements for toxicology studies. That same day SAMHSA a the list It confirms that currently certified laboratories, which will probably be updated in the future, but are not available at the moment.

However, at the end of the day, HHS handles oral fluid testing in a similar scenario to hair follicle testing. The department promised to create guidelines for hair testing in 2015, but has yet to do so.

This the article originally posted by The filteran online magazine that deals with drug use, drug policy and human rights from a harm reduction perspective. Follow Filter on Bluesky, X or Facebookand sign up for their newsletter.

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TSA clarifies that cannabis policy has not changed

Published

1 day ago

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May 24, 2026

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Over the past week, many news organizations have been running exaggerated headlines about a supposed change by the federal government to allow marijuana to be brought into airports and airplanes. But it’s not true, the Transportation Security Administration (TSA) tells Marijuana Moment.

“TSA’s policy on medical marijuana has not changed,” a TSA spokeswoman said in an email Wednesday.

“According to the TSA website: If any illegal substance or evidence of criminal activity is found during the security screening, TSA will refer the matter to law enforcement,” they said. While it’s true that the agency’s list of medical marijuana “What can I bring?” section of its website was updated on April 27, there were no major changes in policy.

Currently, the website says “Yes,” passengers can carry medical marijuana in carry-on and checked bags with special instructions. But the TSA cannabis policy has said “Yes” to medical marijuana, with the same caveats, since 2019.

Read more at Marijuana Moment










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