- Jackson man to cast electoral vote for Trump; others trying to dissuade him (11/29/16)51
- Man killed by vehicle had been charged with domestic assault (11/30/16)
- Former Cape council member dies, remembered as 'wonderful public servant' (11/29/16)1
- Hotel chain president: City should regulate short-term lodging (11/27/16)16
- Woman accused in three robberies disguised herself as man (11/29/16)5
- Post-election taunts reported at Jackson schools (12/2/16)24
- Officers: Delta man dies during domestic dispute (11/28/16)1
- Business notebook: New store shows faith in Scott City district (11/28/16)
- Missouri chamber to honor Cape's John Mehner (11/30/16)6
- Men who pulled father, son from burning car near Naylor honored by highway patrol (12/1/16)
Causes of hypoxia in Gulf of Mexico
To the editor:Recent articles have suggested that agriculture is responsible for hypoxia in the Gulf of Mexico. Hypoxia is the absence of oxygen reaching living tissues. In the Gulf of Mexico and in other water bodies worldwide, an overabundance of nutrients encourages algal growth, which subsequently reduces sunlight and oxygen and promotes the loss of aquatic habitat. Nutrients such as nitrogen and phosphorus have been conclusively shown to be the main nutrients responsible for the dead zone in the Gulf of Mexico.
May of these recent articles suggest that nitrogen and phosphorus fertilizer runoff from agricultural lands, combined with soil erosion, is the sole source for these nutrients. However, credible evidence shows that nutrients may also be derived from atmospheric deposition, sewage and industrial discharge and fertilizer runoff from residential areas. Nutrient runoff from suburban areas roughly equals that of agricultural lands.
Agricultural runoff does contribute a portion of the nitrogen and phosphorus load destined for the Gulf of Mexico. However, industry lead solutions include controlled drainage/irrigation systems, precision nutrient application technologies, innovative soil-pasture management systems and the best nutrient management system, all of which appreciably limit nutrient runoff. Thus, agricultural industries and farmers/ranchers in the 31 states that are drained by the Mississippi River recognize the severity of the problem, are providing solutions and are promoting soil and water stewardship for future generations.
MICHAEL AIDE, Department of Agriculture, Southeast Missouri State University, Cape Girardeau