Notching up your nitrogen knowledge for the new year (2) Nov 22, 2009
These loss pathways include: surface runoff, leaching below the root zone, ammonia volatilization, denitrification, and immobilization ... Often, the greater the ratio of precipitation to evapotranspiration, and the warmer the soil and air temperatures, the greater the risks of loss via runoff, leaching, and/or denitrification. (Minnesota Farm Guide, MN)
Re-evaluate how you apply nitrogen this fall Sep 30, 2009
Bob Frazee, University of Illinois natural resources educator, reports that a significant amount of fall-applied nitrogen was lost in saturated soils this season through denitrification and leaching through drainage tiles ... At 50 degrees, most of the nitrogen won t convert to nitrate or be lost to leaching or denitrification ... However, when moisture conditions were not as conducive to denitrification or leaching, inhibitors produced no increase. (Mattoon Journal-Gazette, IL)
Denitrification, Its Importance Once Diluted, May Be Back On Top Sep 5, 2009
A key part of that cycle, researchers once thought, was a process known as denitrification ... They went so far as to suggest that the nitrogen cycle for oceans needed to be revised, as denitrification, according to their inquiry, did not play the major role that had been thought ... Now, a research team, led by Bess Ward, the William J. Sinclair Professor of Geosciences at Princeton University, writing in the Sept. 3 issue of Nature, is presenting data that could re-establish denitrification as... (Science Daily)
Pioneer Talk Crops Jul 4, 2009
This additional application of nitrogen is not advised nor is it needed unless you budgeted less than normal or N was lost due to leaching or denitrification earlier in the season. Seasons that produce ideal weather conditions also produce ideal soil environmental conditions that produce greater nitrogen mineralization (more nitrogen available for the crop) from the organic fraction of the soil, enough to supplement additional corn needs should the corn plant require it. (Agri-View, WI)
Agricultural summary Jun 27, 2009
Denitrification is becoming a concern as producers continue to look for an opportunity to complete planting. There were 2. (Princeton Bureau County Republican, IL)
DEM boss to meet in town on regs Apr 17, 2009
DEMs director will discuss the states costly denitrification regulations at a public workshop sometime in May ... CHARLESTOWN The state s top environmental official will visit Charlestown in the weeks ahead to discuss the state s costly denitrification regulation and whether there are ways to lessen its burden on Charlestown homeowners. (Westerly Sun, RI)
State seeking cesspool funding Mar 21, 2009
PROVIDENCE The state is not insensitive to the plight of Charlestown homeowners who are unable to afford to replace their failing cesspools with costly new denitrification systems, and it is working on ways to help them, W. Michael Sullivan, the director of Rhode Island s Department of Environmental Management, said Thursday. Share your thoughts. (Westerly Sun, RI)
Billions Of Years Ago, Microbes Were Key In Developing Modern Nitrogen Cycle Mar 4, 2009
5 billion years ago, and found telltale isotope signatures created in the process of denitrification, the removal of oxygen from nitrate. If denitrification was occurring, then nitrification the addition of oxygen to ammonia to form nitrate also must have been taking place, Buick said. (Science Daily)
Panelists Discuss Fertilizer Strategies (14) Mar 3, 2009
Snyder pointed to substantial nitrogen loss from denitrification in water-logged corn fields last spring. In addition to reducing yield potential, denitrification releases nitrous oxide, a greenhouse gas that is about 300 times more potent than carbon dioxide and roughly 10 times more potent than methane ... Denitrification and other processes that contribute to nitrogen loss and reduced yield potential result in leakage of nitrogen into the environment, said Snyder. (Minnesota Farm Guide, MN)
Reducing Nitrate Discharge To Downstream Ecosystems Feb 12, 2009
They cultured and encapsulated denitrifying bacteria in polymer gels and verified their denitrification rates. The resulting product was called "immobilized denitrification sludge," or IDS. ... Hunt and ARS environmental engineer Kyoung Ro determined that the hydraulic retention time (HRT)--how long the field drainage water remained in the bioreactor--was crucial in the denitrification process. (Science Daily)
More of this story Feb 11, 2009
The vote on the Felkner case came at the end of a long meeting, which was consumed for a considerable amount of time with discussion about the Rhode Island Department of Environmental Management s rule that homeowners living in a designated critical resource area install expensive denitrification systems when their cesspools or septic systems need to be replaced ... I don t believe the state of Rhode Island will give you any relief, said Joseph Frisella, an engineer, who served on the board that... (Westerly Sun, RI)
