The problem of blowing dust did not come from farmers growing too much wheat but from the rainfall being too little for growing enough wheat to keep the topsoil from blowing away. In the 1930s, techniques and technologies of soil conservation, most of which had been available but ignored before the Dust Bowl conditions began, were promoted by the Soil Conservation Service (SCS) of the US Department of Agriculture, so that, with cooperation from the weather, soil condition was much improved by 1940.