| OCR Text |
Show tity was added, but it was mixed with the top half of the soil only. To another the same quantity was mixed with the top fourth of the soil only and some boxes had no fertilizer added at all. AH of tlem were planted ih oats of the same kind at one time and all were, treated just alike. The unfertilized unfertil-ized box produced 10 ounces of oats; the box in which the fertilizer fertil-izer was mixed with: all the soil produced 47 J ounces; the one mixed to half its depth, 52 ounces; and the one . mixed to one-fourth its depth produced GO ounces. The conclusions drawn are that the productiveness of a soil depends de-pends quite as much on the concentration con-centration of the plant food as upon the quantity present and that where only a small quantity of manure is available it is best to concentrate it neav the surface in the drill or . hill, and that deep cultui e, without increased manuring, manur-ing, will reduce the yield. Of course, deep tilling is best, if the soil is rich throughout itsdepth. INTERESTING SOIL STUDIES ' An 'ex6hangb' says:" AJk ,"ono.'of tho Ge'rmah experiment, stations a number of galvanized iron lpoxes " 1G inches deep and all '6f the same size were sunk -into the ground . and filled with a ' poor sandy soil . To ond of these boxes was- added a certain quantity of fertilizer which "was thoroughly mixed with all tho " Boil. To another , the same quan- J |
