Show 1 r I Research Improves m roves Average Crop Yield fetter Better Machinery and Fertilizer Aid Advance Farms now arc are growing about a third more crops than in 1920 and getting the job done in about 10 per cent less time according to U U. S. S department of agriculture statistics Several factors have made this record possible One has been the research work of plant breeders in indevel developing devel ping heavier yielding hardier varieties of corn small grains root IN IQ b IT TOOK IN 1920 1020 T THESE ESE 10 LESS FARM CROPS WERE PRODUCED PRO p o. o LABOR TIME TO WITH THIS PRODUCE 3 1 AMOUNT OF FARM MORE MOPE CROPS LABOR TIME FARM FARM TIME TIME CROPS PRODUCED crops legumes a and n d vegetables Another is the improvement in machines machines machines ma ma- chines that helps farmers do more work in a day A third has been the increasing use of commercial fertilizer and a better knowledge of how to use it Even with increasing use of fertilizer fertilizer fertilizer fer fer- fer- fer the bigger per acre yields fr from m improved crop varieties are being obtained at the expense of the soils soil's plant food and organic matter supply warns Middle West Vest Soil Improvement Improvement Improvement Im Im- Im- Im provement committee Unless this drain is offset by fertility fertility fertility fer fer- fer- fer building practices that put back needed nutrients and replenish organic matter the committee says worn out soils and lower yields will be the eventual result on millions millions millions mil mil- lions of farms |