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Buy cialis online canada Taken from The Land article, buy cialis online canada November 26, buy cialis online canada 2010

Buy cialis online canada When people hear that I’m an advocate of high-yield farming to feed the world and protect the environment, buy cialis online canada assertions of farm runoff into the rivers are raised to support charges against modern farming methods.

Buy cialis online canada Urban dwellers, buy cialis online canada even some of my rural neighbors, buy cialis online canada tell me their concerns about large-scale farming ruining our rivers “because the rivers are muddy.” They worry about even more soil erosion as farmers gear up to double food production over the next 40 years to feed a peak population of 9 billion people.

Buy cialis online canada Certainly, buy cialis online canada the rivers in the world’s farming areas run brown. Buy cialis online canada Muddy rivers generally mean the surrounding soils are good enough to farm. Buy cialis online canada But the farmland sustains high yields despite the brown rivers. Buy cialis online canada The mountain streams produce no food – even though the water coming down the mountainside travels at much higher and more dangerous speeds and run crystal clear. Buy cialis online canada Why? The soil from the mountainsides has mostly eroded long since.

Buy cialis online canada Fortunately, buy cialis online canada you don’t have to just take my word for that. Buy cialis online canada A research team sponsored by Minnesota corn and soybean farmers just carried out an airborne laser scanning study of the Minnesota River above Mankato. Buy cialis online canada The study found that 56 to 86 percent of the sediment in the river came from the natural erosion along the riverbanks – which has been going on for centuries.

Buy cialis online canada Satish Gupta of the Minnesota Department of Soil, buy cialis online canada Water and Climate was the lead author on the study. Buy cialis online canada He said, buy cialis online canada “Some of these (river) banks are 150 feet high. Buy cialis online canada They are very steep, buy cialis online canada not very stable, buy cialis online canada and they slough into the river.” Gupta also emphasized that the sediment load in any farm-country river will be a combination of bank erosion and runoff from the farm fields. Buy cialis online canada The proportions vary with the soils, buy cialis online canada slope, buy cialis online canada rainfall patterns and farming systems. Buy cialis online canada Thanks to the laws of hydraulics, buy cialis online canada however, buy cialis online canada any stream will get enough sediment to slow itself down, buy cialis online canada one way or the other – as it flows brown.

Buy cialis online canada Gupta notes that in addition to bank erosion, buy cialis online canada the Minnesota River has also been impacted by a Corps of Engineers dredging program. Buy cialis online canada The Corps takes 20, buy cialis online canada000 cubic yards of sediment per year out of the river to maintain a nine-foot depth for barges and towboats. Buy cialis online canada The dredging makes the river flow faster and straighter. Buy cialis online canada So does the extra water from urban rooftops, buy cialis online canada streets, buy cialis online canada parking lots and airports running into the river instead of infiltrating the surrounding soils. Buy cialis online canada What happens to the dredged sediment? Beneficial public uses include wetland creation, buy cialis online canada bird nesting creation and upland habitat development.

Buy cialis online canada Even though the Minnesota River study shows up to 86 percent of the sediment coming from bank erosion, buy cialis online canada best-farming practices are still helpful in minimizing crop and soillossBs. Buy cialis online canada Notill farming, buy cialis online canada contour farming, buy cialis online canada grassed waterways and buffer strips at field edges all help reduce sediment loss. Buy cialis online canada Fencing cattle from the creeks has also become a popular conservation policy in many areas (including my rural Shenandoah Valley.)

Buy cialis online canada Continuous research and innovationhas made today’s farmers the most sustainable in history. Buy cialis online canada Their high crop yields mean they need to farm less cropland to supply food demands. Buy cialis online canada They restore the soil nutrients taken up by the growing crops with chemical fertilizers. Buy cialis online canada This keeps the plant root structures strong, buy cialis online canada so they resist erosion. Buy cialis online canada No-till farming by itself can reduce soil erosion from the fields by 65 to 95 percent. Buy cialis online canada But don’t expect to ever see crystal clear rivers in good farming country.

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Buy cialis online canada This commentary was submitted by Dennis Avery, buy cialis online canada a senior fellow for the Hudson Institute in Washington, buy cialis online canada D.C., buy cialis online canada and the director for the Center for Global Food Issues. Buy cialis online canada He was formerly a senior analyst for the Department of State. Buy cialis online canada Readers may write him at P. Buy cialis online canada 0. Buy cialis online canada Box 202, buy cialis online canada Churchville, buy cialis online canada VA 24421 or email to cgfi@hughes.net.

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