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You are browsing the archive for Soil's Role in the Environment Archives - Page 2 of 5 - Terra Central.

3 July 2016

Lake Erie Watershed Soil Phosphorus Study Shows Glyphosate Link

As reported recently by Laura Barrera in the┬ámagazine No-Till Farmer, a study led by Ohio Northern University chemistry professor Christopher Spiese links the popular herbicide glyphosate to dissolved reactive phosphorus (DRP) desorption in soils. Mobilization and runoff of phosphorus to streams and lakes is associated with toxic algae blooms in Lake Erie and the Gulf of Mexico Dead Zone. For decades, soil scientists have understood phosphorus to form low-solubility compounds …

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1 June 2016

Herbicides, Critical Source Areas, and Vegetated Buffers

Waging Chemical Warfare on Weeds Last fall, while on one of my country road walking routes, I noticed an advanced infestation of marestail (Conyza canadensis) in a soybean field. Evidently, this weed, and others, is becoming herbicide-resistant. A new agricultural herbicide called Acuron (link goes to manufacturer’s website) is on the market, and in some fields. Acuron has been developed in response to “superweeds” that have grown resistant to glyphosate, …

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18 April 2016

A Journey on the Dirt Road

When I was seven years old, my family moved from Dearborn, a modern suburb of Detroit, Michigan and the home of Henry Ford, to a much smaller and older town in Northwest Ohio, called Defiance. Perhaps the most notable aspect of Defiance was that it was built at the confluence of the Maumee and Auglaize rivers and regional folklore had it that the meeting of these two rivers protected the …

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1 January 2016

Agricultural Runoff and Ohio’s Senate Bill 1

In response to the August 2014 shutdown of Toledo’s water supply due to microcystin contamination, the Ohio legislature passed Senate Bill 1, which regulates fertilizer and manure application to farm fields. Essentially, the new regulations prohibit spreading manure or fertilizer in the Lake Erie Watershed when soils are frozen, snow-covered or saturated, or if there is a more than 50% chance of at least one-half inch of rain in the …

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16 November 2015

Field Drain Tile and the “Re-Eutrophication” of Lake Erie

Algae Blooms, Microcystin and Phosphorus It’s been over a year since Toledo, Ohio and surrounding communities shut down public water supplies due to an algae bloom and microcystin contamination in western Lake Erie. Was the trouble a “one-off” or can we expect more of these events in the future? While attending a seminar this year hosted by the Michigan Chapter of the Soil and Water Conservation Society, my interest was …

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31 May 2015

Uncovering a Soil Mystery Using Micromorphology and Petrography

This is the second in a series (link to 1st) about the genesis of the Success soil, which was the topic of my master’s research. This part has to do with using petrography to identify soil constituents and examine soil fabric to help understand soil forming processes in a particular case. Soil fabric consists of soil plasma and skeletal grains, which can be distinguished under magnification. W.L. Kubiena was an …

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16 March 2015

Unearthing a Soil Mystery Using Differential Solution Analysis

Some years ago while in graduate school at the University of New Hampshire, I was presented the opportunity by my advisor, Dr. Chris Evans, to solve a hard soil mystery resting mostly unnoticed except to those who had to work in it. Found on steeper slopes under coniferous forest, for builders, the Success series can be troublesome. It’s effort enough to dig any soil, but the Success soil is especially …

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20 November 2014

Update: American Farm Bureau Federation et al. v. EPA Oral Arguments

American Farm Bureau Federation, et al. v. EPA, Case 13-4079 oral arguments were held Tuesday (see previous post) and early indications suggest the Farm Bureau is fighting an uphill battle as it attempts to block the EPA from implementing a Total Maximum Daily Load (TMDL) program for Chesepeake Bay. The program calls for a 25% percent cut in nitrogen, 24% cut in phosphorus, and 20% reduction in sediment loads by …

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16 November 2014

American Farm Bureau Federation vs. EPA: Oral Arguments Scheduled for Tuesday

American Farm Bureau Federation, et al. v. EPA, Case 13-4079 oral arguments are scheduled for Tuesday, November 18, 2014 at U.S. Court of Appeals for the Third Circuit in Philadelphia. The American Farm Bureau Federation (Farm Bureau) is suing the Environmental Protection Agency over its authority to regulate farm runoff. The issue has gained attention following this summer’s “do not drink” advisory affecting over 500,000 residents in the Toledo, Ohio …

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8 October 2014

Symphony of the Soil is a Beautiful Film Documentary

I can’t say enough about this film made by Deborah Garcia. Symphony of the Soil is available here through October 10 for free viewing. The film has wonderful macro and micro videography and a tremendous sound track. The passion these scientists providing narrative have for their subject comes through loud and clear. I try to stay away from superlatives, but can’t help it with this documentary. Watch the film. If …

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