On-farm research shows farmers that they can use les...( oils so when we harvested 20 tons in 2...)

oils, so when we harvested 20 tons in 2006, I was excited." This year, Kiechle is applying half the nitrogen he used last year. "This on-farm research trial showed I was just wasting money to apply more. I cut back, and that has saved me about $10-$12 per acre."

And when farmer Dan Mulvaney used only 30 lbs of starter nitrogen on second-year corn at his farm in Conesus, N.Y., his corn silage yields increased 4 to 5 tons per acre, and his shelled corn increased from 100 to 140 bushels per acre.

In Freeville, N.Y., Beck Farm crop manager Jerry Coller manages 2,000 acres of crops and does not have enough manure to meet the nitrogen needs of those crops. He says the precision nitrogen project showed him that his grass crops provide more nitrogen than he thought, so less manure is required to fertilize those lands to grow corn. Coller has reconfigured applications to better distribute the farm's manure resources to other fields.

In New York state, some 460,000 acres produced 8.28 million tons of silage in 2006. Nitrogen fertilizer is growing increasingly expensive (about 40 cents per pound last year), so any reduction in nitrogen use improves farmers' bottom line and prevents nutrient losses into the environment.

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Cornell University News Service
20-Jun-2007


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