OCR Text |
Show Grass Halts Soil Erosion j Crass not only prevents erosion, i but well managed grazing land los-s ! less fertility, because less Is taken from the soil by pasture plants nnd : part of that which Is removed Is ' restored by herds. Land planted to corn on on 8 to 30 per cent slope In Missouri nnd North Carolina ' loses from 15 to 17 tons of soil an ' acre usually. Land growing blue-grass blue-grass or lespedeza loses only 0.8 to 0.9 ton an acre. Similar results were obtained In a comparison of native grass sd and cleaned tilled kaf.'lr In central Kansas, and of cotton cot-ton nnd grassland jn southern states. Decaying grass roots keep U,r; soi' porous am favorable to the absorption absorp-tion of moisture. |