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Top Developments in Ag Law in 2019

Updated: Apr 3, 2021

Hemp production at the Wye Research and Education Center. Image by Edwin Remsberg.
Hemp production at the Wye Research and Education Center. Image by Edwin Remsberg.

The article is not a substitute for legal advice. See here for the site’s reposting policy.

With 2019 about over and 2020 about to start, I want to take a minute to look back at the top legal developments impacting agriculture in 2019. A few of these legal developments may seem like repeats from my 2018 update; click here to see. Moving into 2020, new issues will emerge as continued lawsuits involving pesticides, continued implementation of the 2018 Farm Bill, and possible appeals in a few cases appear on the list. If you have not already signed up for updates, see the bottom of this post to get email updates sent to you as new content is available.

Expanded Hemp Production

The 2018 Farm Bill made growing hemp possible nationwide by removing it from the Controlled Substances Act. The cannabis sativa must have less than 0.3 percent THC on a dry-weight basis to qualify as hemp. In 2019, we saw states waiting to see how USDA would implement this provision of the farm bill. In October, USDA announced the interim rule for hemp which will require states and tribal governments to develop plans for USDA approval, and states have now begun this process.

In states where hemp production was already allowed under the 2014 Farm Bill, we have begun to see several complaints about potential nuisances caused by hemp growing and processing. Some states have started to debate whether their state’s right-to-farm (RTF) law protects hemp growers and processors. Falling under the RTFlaw will not always be an easy determination and will depend on how each state’s RTF law is interpreted. This new industry is going to present other legal issues as it becomes more of a mainstream crop to grow.

Maryland Poultry Farm Workers’ Compensation Decision

In November, the Maryland Court of Special Appeals held that a poultry farm manager was a co-employee of the poultry farm owner and Tyson. The owner of the poultry farm lived out-of-state, and the farm manager routinely interacted with Tyson in place of the owner. To the court, Tyson’s level of control over the farm manager was enough to find the farm manager to be a co-employee. One justice who dissented pointed out that much of the farm manager’s interaction with Tyson was as the owner’s agent and would not have been a co-employee. Tyson may appeal this decision, and we will have to wait well into 2020 to see the outcome.

Right-to-Farm Challenges

All 50 states have some variation of a RTF law, which is a defense to a nuisance suit. In 2018, the North Carolina hog farm litigation made the news with verdicts against Murphy-Brown, LLC totaling millions of dollars. Those trials continued into 2019, with an appeal filed challenging the decision that North Carolina’s RTF law did not apply in these cases. The Fourth Circuit Court of Appeals will hear this appeal in early 2020.

And 2019 saw state courts upholding valid uses of the RTF defense. In Indiana, the court of appeals found that a recently established hog farm could use the RTF defense. Neighbors had claimed that the farm was a nuisance, but the court agreed with the farm’s owners that it was not a nuisance and was located in an agricultural area. The court also highlighted that the proper time to challenge a newly established hog farm was during the public comment process of the permitting process, not after establishing the farm. None of the complaining neighbors had participated during the public phase of the permitting process.

RTF laws also went international during 2019. The Parliament of New South Wales in Australia recently passed an RTF law, creating a nuisance defense for qualifying farms in New South Wales similar to that of many American farms.

Roundup Litigation

Jury verdicts made headlines in 2019 which involved parties claiming that years of using Roundup or glyphosate have caused cancer. In many instances, these cases have resulted in millions of dollars for the plaintiffs. There are several cases filed in state courts and currently a federal class-action suit being heard in the U.S. District Court in San Francisco. The federal class-action presently has more than 1,900 lawsuits pending. The federal district judge hearing the class-action suit has ordered Bayer and the plaintiffs into mediation. We will have to wait and see what the outcome is in 2020.

Although these particular lawsuits currently focus on Bayer, producers should not ignore them. These lawsuits may require landlords and tenants to preemptively include language in leases indemnifying the landlord for uses of glyphosate on the leased property or alternatively, landlords limiting their usage. Producers may wish to examine insurance policies to determine covered claims related to glyphosate’s use. Producers have much to think about: Are employees properly trained and do they have the proper equipment to utilize glyphosate on the farm? Should the farm consider enrolling in state workers’ compensation insurance programs? These lawsuits should get producers to think proactively about how to limit potential legal liability.

Montgomery County Pesticide Prohibition

In 2015, the Montgomery County Council passed a bill prohibiting the use of certain pesticides on private and county-owned properties. The law limited the use of pesticides registered with the Maryland Department of Agriculture (MDA), only allowing pesticides listed by the county for non-essential cosmetic purposes. In 2019, the Maryland Court of Special Appeals overturned a decision by the circuit court of Montgomery County, ruling the ordinance preempted by state law. To the court, this ordinance fell in other environmental schemes allowing counties to develop programs to enhance water quality. The court also rejected claims of preemption by implication and arguments that the state’s pesticide laws were to create uniformity in the regulation of pesticides. The plaintiffs did not appeal, but we have not seen the end of this issue. Other counties in Maryland are looking at implementing similar ordinances.

Greenhouse Gas Emissions

A Minnesota state court recently held that a state agency should have considered the potential impacts of greenhouse gas emissions from a proposed dairy expansion before approving the dairy’s discharge permit. Before granting the permit, the state agency had to complete an environmental assessment required under state law. During the public comment period, a number of comments were made asking for the state to consider the potential greenhouse gas emissions from the dairy expansion. The state never dealt with these comments and approved the dairy’s permit. The commenters challenged the approval, and the court of appeals agreed that the state agency should have dealt with the greenhouse gas emission comments before approving the permit.

While the state may still approve the dairy’s permit, the state agency must now handle the greenhouse gas emission comments before granting the permit. Although this is just a decision out of Minnesota, we should pay attention because this may happen in other states as well. As we move forward into 2020, it will be interesting to see if other states follow the same outcome as this Minnesota court.

Clean Water Act

Legal challenges around the 2015 definition of “waters of the U.S.” (WOTUS) continued in 2019. In September, the Trump administration announced a repeal of the 2015 definition, the first step of a two-step process, with step two being expected publication of a new WOTUS rule by EPA and the Army Corps of Engineers in late 2019. This new rule, once announced, will not end the legal challenges and we should expect new legal challenges once the new rule is finalized.


As you can see, a number of these issues are not settled, and we can expect additional developments in 2020. We will also see new legal issues arise which we may not have considered. Agricultural law is a field that is always developing.


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