Select a Site:


Reducing Nutrient Loss by 2025

Reducing Nutrient Loss by 2025

How farmers can reduce runoff by 45 percent through nutrient use efficiency

How farmers can reduce runoff by 45 percent through nutrient use efficiency

In the current economic and environmental climate, adoption of necessary measures to improve water quality has been slow, especially as the soft commodity market places a burden on the supporters of these measures to prove they’re worth the extra expense. In September of 2016, experts from the public and private sector came together to discuss ways that growers could address water quality issues at the Verdesian Life Sciences Water Quality and Soil Health Solutions panel in Bloomington, Illinois.

Among the panelists were:

During the discussion, members talked about research designed to curb nutrient runoff, from tile water studies and tile line gates to wetlands and bioreactors.

“The goals set in Illinois aim for a 45% reduction in total nutrient load by 2025,” says Wilson. “It sounds like a lot, but there’s also a lot we can do to reduce nutrient loss.”

In nitrogen, one of the biggest ways to reduce nutrient loss is by multiple applications, using technology – such as soil and tissue sampling – to decide when to apply to get the most efficient use of nutrients. Another way is by figuring out what we can add to the soil – such as sulfur, calcium, iron – to help corn and wheat metabolize nitrogen better.

“We can’t just get there by reduction; we’ll get there by better nutrient efficiency,” says Wilson. “If we can reduce the Illinois Agronomy handbook’s recommendation of 1.2 pounds of nitrogen per bushel of corn to just .9 pounds per bushel, we’ll blow that 2025 goal out of the water.”

However, reducing phosphorus is a little more complicated. Legacy phosphorus takes a while to recede from the waterways and ditches where it currently sits from previous growing seasons.

“Any time you’re finding nutrients in a waterway, the farmer isn’t getting paid for that,” says Wilson. “If it’s in the ditch, that’s money spent that isn’t making corn, beans and wheat.”

With phosphorus, banding is recognized as the most efficient way to prevent loss, but it isn’t always the most practical. Many growers make one application every two years – enough at once for both corn and soybeans. One method to prevent loss might be to split the application, using enough for each individual crop and keeping it from having an extra year to move offsite into surface water via soil erosion.

And similar to nitrogen, it’s important to consider how interactions with soil pH, zinc, calcium and other micronutrients could affect the ability of phosphorus to hold in the soil and better metabolize in the plant.

“If there’s more in the soil, there’s more chance of loss,” says Wilson. “We’ve got to consider the cost effectiveness of feeding each crop individually.”

Wilson says that, ultimately, the success of these measures will be a team effort.

“Environmentally, the water quality issue isn’t going away,” says Wilson, “and no one depends on the land, air and water more than the farmer.”

Latest blog posts

The Verdesian Life Sciences R&D team recently won an award at the 2021 World Biostimulant Conference in Florida based on a paper presented by Dr. Pawel Wiatrak, Technical Development Manager, called Effect of Novel Biostimulant on Crop Production, Phosphorus Availability and Phosphatase Activity. The judges voted Wiatrak’s presentation for an Innovation & Sustainability Award on […]

“My mother always had a garden and wanted to impress upon my brother and I that food doesn’t really come from a grocery store,” he says. “I also remember, quite clearly, the germination experiments they have you do in kindergarten with a dried bean and a wet paper towel. From that moment, I’ve been enamored […]

Verdesian Life Sciences’ Trident™ nitrogen stabilizing solution product was named one of 10 finalists for The Scoop/Farm Journal’s “2021 New Product of the Year.” The winner will be chosen by vote; the deadline to vote is January 1, 2022. To qualify for this recognition, each of the 10 products had to be available for stocking for […]