Project looks at long-term impacts of fertilizer

The Prairie Star
August 15, 2014
By The Prairie Star

August 15, 2014, Kimberly, ID – Applying 50 tons of manure per acre for one year is a heavy application, repeating that rate for eight years is a lot of manure — and a lot of nitrogen.

Amber Moore, University of Idaho extension soils specialist, has calculated that some plots in a long-term manure application study have already received 2,746 pounds of nitrogen in the last two years alone.

She expected to see nutrient leaching from the top foot of soil as plants were unable to utilize that much nitrogen. So far, that hasn’t been an issue, at least, not in potatoes. READ MORE

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