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Maine Farm that Uses Fish Poop to Grow Crops Year Round is Expanding

By Lori Valigra

A Lisbon farm plans to add 500,000 square feet of greenhouse operations over the next six years and defy doubters who don’t believe its style of year-round growing, which uses fish waste to fertilize greens, can be scaled into a large commercial operation.

Springworks Farm, the largest aquaponics farm in Maine and one of the largest in the United States, aims to be a local organic alternative to lettuce and other greens trucked from California and Arizona to the East Coast.

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Supplemental Nitrogen on Soybeans: Can Early Nitrogen Increase Yield?

Video: Supplemental Nitrogen on Soybeans: Can Early Nitrogen Increase Yield?

Can supplemental nitrogen help soybeans reach higher yield potential? Technical Agronomist Tim Sickman walks through an ongoing trial at the Nutrien Innovation Farm in Owensboro, Kentucky, exploring whether a modest amount of nitrogen applied at planting can support higher-yielding soybean environments.

The trial compares 30 pounds of supplemental nitrogen across both 15- and 30-inch rows, along with treatments that include sulfur and micronutrients. Similar trials conducted in 2024 and 2025 delivered a six- to seven-bushel yield response, prompting the team to expand the research this season.

Early observations show that treated soybeans are slightly taller and averaging about two additional nodes on the main stem. These added nodes could create more opportunities for blooms and pods, but the true results will come at harvest when the team evaluates pod development, seed fill and final yield.

In This Video:

Why high-yield soybeans may need supplemental nitrogen

Results from the 2024 and 2025 trials

Nitrogen treatments in 15- and 30-inch rows

Fertilizer placement and application methods

Differences in plant height and node counts

Potential effects on pod development and yield