Show research improves average fl crop yield better machinery and fertilizer aid advance farms now are growing about third moro more crops than in 1020 1920 and getting the job done in about 10 per cent less time according to U S department of agriculture statistics several factors havo have made this record possible one has been tho the research work of plant breeders bleeders bre eders in developing heavier yielding hardier varieties of corn small grains root IN 1946 IT TOOK IN tozo THESE biow 10 LESS CROPS WERE PRO efto LABOR TIME TO WITH PRODUCE va S AMOUNT OF LABOR TIME FARM faem LA TIME CE 0 legumes a and n 4 vegetables another la Is the improvement in machines that helps farmers do more mor e work in a day A third hns has been the tha increasing use me ot of com commercial commerce a I 1 fertilizer f erti lizer and a i better knowledge of 0 f how bow to use it even with increasing use usa of fertilizer t ti the bigger per acre acra yields from improved crop varieties are being obtained at the expense of the soils plant food and organic matter supply warns middle west sollum soil improvement pro committee unless this drain Is offset by fertility building practices that eliat put back needed nutrients and rep replenish lents h organic matter the tha committee says worn out tolls soils and lower loer yields will be the tha eventual result on millions all of farms |