Southern Wisconsin Cheesemakers' and Dairymen's Association / Proceedings of the tenth annual meeting of the Southern Wisconsin Cheesemakers' and Dairymen's Association held at Monroe, Wisconsin, Thurs. and Fri., January 27 and 28, 1910
Readheimer, J. E.
Phosphorus as a fertilizer on the dairy farm, pp. 75-83 PDF (1.9 MB)
82 TENTH ANNUMA CONVENTION 45 bushels on land not treated. The same year on an 80 acre field of oats rock phosphate increased the yield from 25 bushels per acre to 40 bushels per acre. In 1908 rock phosphate increased the Vield of wheat from 26 bushels per acre fo 41 bushels per acre and oats from 25 bushels per acre to 0)) bushels per acre. In 190') a 40 acre field of 20 year old pasture sod yielde(l 59 bushels of corn per acre on untreated land an(l SI bushels on treated land. Also in 19109 on an 8) acre clover sod that had been in continous cultivation under the four year rotation for thirty years, without manure or pasture yielde(l on the Un- treated lan(l 65 bushels of corn and on treated land 81 bushels per acre. In 1908, an 80 acre field of clover yielded 2' tons of hay in the first cutting on the treated land and only I A tons on the untreated land. Phosphorus not only pro(luces larger yields of grain, but the grain is of better quality. It hastens maturity and tills out the grain better. Grain grown on soil well sup)- plied with phosphorus is always plumper an(l heavier than grain grown on soil deficient in phosl)horus. In 19io) oats grown on land to which phosphorus had been apl)lie I weighed 35 pounds per bushel while the oats grown on untreated land weighed only 20) pounds per bushel. The same is truey of corn and wheat. Raw rock phosphate, finely ground and carrying 12 to 12A per cent of the element phosphorus, can be purchased from a number of firms in Tennessee for $3 01) to $4.5,0t per ton and the freight rate to northern Illinois or southern Wisconsin should not be more than $3.50 to $4.00 per toil. This means that enough phosphorus can be bought in raw rock phosphate for $S.04) or $9.00 to produce a thousand bushels of corn. This is at a cost of less than one cent per bushel. The yielding possibilities of the soil are almost unflimit- ed where the necessary plant food is provided. One acre of land in North Carolina in 1909 produced 226k bushels of
Based on date of publication, this material is presumed to be in the public domain.| For information on re-use, see http://digital.library.wisc.edu/1711.dl/Copyright