Show I Checks Soil Losses I Good soil management pays dividends dividends dividends divi divi- in making heavy crops per acre building organic matter in the soil and at the same time tune checking soil TREATED WITH LIME PHOSPHATE SOIL LOVER NOT TREATED I I t. t 0 l lQ lA nl HAJ HAJn cow CO N s EAT CloveR OATS IL n 17 P 5 9 I 12 6 02 21 TON TONS ON OK PER ACRE TONS Tom OH PEA AC ACRE les OF 1980 1960 os OF NITROGEN LBS o OF SOL 20 10 l LOS l OF PI-IO PI lD LOS AVAIl LB lei AVAIL POTA 5 33 O us tN AVAIL CALCIUM 80 l LOS AVAIL erosion The results shown above summarize tests at the University of Illinois Elizabethtown experiment field since 1918 Manure lime and phosphate made the difference between the two plots The soil was already rich richin richin richin in potash The heavy crops of clover alfalfa-clover and small grains protected the sori soli from beating rains The soil of the treated plot with its 16 tons of organic organic organic or or- ganic matter per acre could soak up more water faster than the soil of the untreated plot with only five tons Less water was left to run off and carry soil with it For erosion control on longer slopes a crop rotation that includes more years in soil protecting crops such as legume grass mixtures is advised Full fields on a 12 per cent slope such as was in this field would need a rotation of corn winter grain and two or three years of legume legume- grass mixtures for best results Contour Contour Con Con- tour farming strip cropping and terracing would help too to slow slowdown slowdown slowdown down the water so that more would have a chance to soak into the ground |