(par 5.1.2) Industrial farm model is damaging environment
http://www.greenbaypressgazette.com/story/opinion/2014/09/03/industrial-farm-model-damaging-environment/15039641/ Lee Luft 5:09 p.m. CDT September 3, 2014 File(Photo: Alyssa Bloechl/Kewaunee County Star-News ) Thank you for your Aug. 25 front-page article by Kate Golden, “In karst area, even good farming may pollute groundwater.” As the article states, the shallow soils and karst (cracked) bedrock common in Northeastern Wisconsin provides little filtration for the animal […]
(par 5.1.2) Salinization
http://people.oregonstate.edu/~muirp/saliniz.htm Salinization refers to a build up of salts in soil, eventually to toxic levels for plants. (3,000 – 6,000 ppm salt results in trouble for most cultivated plants.) Salt in soils decreases the osmotic potential of the soil so that plants can’t take up water from it. When soils are salty, the soil has […]
(par 5.1.2) Soil salinity (taken from wikipedia)
http://en.wikipedia.org/wiki/Soil_salination From Wikipedia, the free encyclopedia Visibly salt-affected soils on rangeland in Colorado. Salts dissolved from the soil accumulate at the soil surface and are deposited on the ground and at the base of the fence post. Soil salinity is the salt content in the soil; the process of increasing the salt content is known as salinization.[1] Salts occur naturally […]