| Show I PROTECTION OFFERED FOR FOIt SOIL THAT BLOWS After the old grass roots humus humus humus hu hu- hu- hu mus and other vegetable mat matter matter ter have been sifted out theres there's not much left to hold the soil 1011 In Ina a heavy wind says Alvie Holyoak Holyoak Holyoak Holy Holy- I oak chairman of tho the Grand County Agricultural Conservation Conserva Conserve tion committee dis dis- dis Year after plowing cing weeding and stirring speed speedup up the processes which reduce humus and break down soil particles particles particles par par- Into wind i moving size For a few years after land has been broken out of sod It will often soften hold together pretty well There are enough of the theold tOld old grass roots to hold the soil particles together But after a time these tiny roots decay or orthey orthey they are arc worked to the surface where they are arc blown away The surface soil becomes powdery powdery ery Then when a heavy wind comes along the soil is lifted into great clouds of dust In a heavy wind the chair l' man explains these soil son part particles parti- parti cles des become a sort of sand blast I Ito to cut away the surface of other fields Unless stopped this cut cut- cut f ting effect moves across the country with destructive effect But this land can be protected against wind erosion by carryIng carrying carrying carry carry- I ing out a of approved carry conservation measures Mr Holyoak Holyoak Ho Ho- explains In areas subject to wind erosion rotations which j a sod should be follow follow- T I cd ed Prote Protected too strips field strips field strip cropping cropping ate are effective In keeping keeping keeping keep keep- ing the tho wind from getting a start in Viewing blowing the soil away Incorporating the straw or other other other oth oth- er crop residues into a rough cloddy surface helps to hold the soil against the wind Shelter belts are effective In la the immediate imme imme- immediate diate area The Agricultural Conservation Conservation Conservation Conserva Conserva- tion program the chairman advises advises ad ad- vises Irises provides assistance to farmers rs In carrying out the conservation conservation conservation con con- practices best designed design design- ed to protect land against wind erosion |
