Show 1 checks soil losses good soil management pays dividends in making heavy crops per acre building organic matter in the I 1 soil and at the same time checking SOIL TREATED WITH LIME P phosphates H 0 A T re E I 1 SOIL POTASH G C LO NOT 0 o T I 1 ED t aa V za 4 S A C ww aar cawa COW C WS Ts 4 IS fa 47 fa 9 jg 9 IS 11 2 6 02 21 TONS OK OA PER PEB ACAE is 5 TONS tom OH OA 2440 LOS IBS OF acao LOS OF LOS LBS OF SOL 20 LOS OF OL ISO LOS AVAIL loa LOS AVAIL CAL ILAM 1680 LOS CALCIUM eros erosion iori the results shown above summarize tests at the university of illinois elizabethtown Elizabeth town experiment field since 1918 manure lime and phosphate made the difference between the two plots the soil was already rich in potash the heavy crops ot of alfalfa clover and small grains protected the soil from beating rains the soil of the treated plot with its 16 tons of 0 organic 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 son soil with lt it for erosion control on longer slopes a crop rotation that includes more years in soil protecting crops such as legume grass mixtures is in advised full fields on a 12 per cent slope such as was in this field would need a rotation tation io ot of corn winter grain and two or three years ot of legume grass mixtures for best results contour farming strip cropping and terracing would help too to slow down the water so that more would have a chance to soak into the ground |