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Environment

2/7/2012

In grain crop production, soils often don’t provide enough nitrogen to achieve optimal crop growth, requiring added fertilizer. However, the over-application of nitrogen fertilizers results...

2/2/2012

Most phosphorus in the seeds of crops is stored in the form of phytate, a molecule not well digested by humans and many other animals. Phosphorus excretion is one of the major pollutants of...

1/6/2012

Cleaning up soils contaminated with heavy and toxic metals is a difficult task, but a technique called phytoextraction can ease the challenge by using metal-tolerant plants to rid soils of metals...

1/5/2012

The need for better water conservation in the landscape highlights the importance of best management practices that optimize the rooting potential of turfgrasses during sod establishment....

11/17/2011

Efforts to reduce soil loss in west central Iowa’s Raccoon River watershed appear to be working. According to an analysis of 93 years of soil erosion and sediment transport data, sediment...

10/31/2011

Choosing how much nitrogen (N) to put on corn fields isn’t something farmers take lightly. Many factors go into the decision, including past experiences, the timing of application, yield...

10/6/2011

Like so many large water bodies around the globe, Lake Winnipeg in Manitoba, Canada, is experiencing deteriorating water quality that is caused partly by agriculture. And just as in other regions...

9/5/2011

Measuring the emission of greenhouse gases from croplands should take into account the crops themselves.

That’s the conclusion of a study in the Sept.-Oct. issue of the Journal...

8/17/2011

More than 50% of the protein-nitrogen fed to beef cattle can escape annually to the atmosphere as ammonia gas, according to a USDA-led study of two Texas cattle feedyards, and emissions increase...

8/1/2011

Constructed wetlands or ditches planted with dense vegetation can cut pesticide concentrations in downstream waters by more than 70%, suggesting that widespread implementation of these low-cost...