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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)

Page 76

manure, prohably not more than two-thirds of it ever gets
back to the farm, because of improper methods of hallld-
ling the manure.  While the loss is probably not so great
in dairy farming where only dairy   products are sold as
where meat pro(lucts are so0l, still the loss is consideral)le.
When a thoousan(l-pounki fat steer is sold from the farm
7 poutlld~ of plhosPllorus go with it. Ini 1000 pounds of fat
hogs, 3 pounds of pllosphorus are sold. In 5.;0 pourLls
onli two-tenthis of a poull(l of phosphorus are sold. if
only butter was sold from the farm   and and all of the
manure could be saved an(l returned to the land without
loss, the depletion of the soil plh(osphorus would go on
very slowly. But, of course, it is not possible to do this,
either to sell only butter, 4or to save all of the manure.
So we see, whether the systeui is grain  farming, where
fhe grain is fed for the production of meat or milk, tile
result is the same.
Tile other elements, nitrogen andl potassiumnl a'so d is-
appeal from  the fariii under either the  grain or live-
stock system of farming, but not to the satmle extent. 0)nly
about two-thirds of the nitro-en and one-fourth of the po-
tassiulll is in the grain, the lest being in the stalks, a 1(1
straws.  When the (grain is fed about one-fcurtli of the
nitrogen is retained by the animal but practically none of
potassium. The nitrogen, to maintain the supply in the
soil, may be secured from the air without cost by grow-
ing legume crops, while the supply of potassium      will
practically be maintained, if good use is made of all stalks
and straws, and the manure carefully saved.
On most soils of Illinois and southern Wisconsin the
problem of the farmer is to maintain the supply of nitro-
gen and phosphorus. In providing for the nitrogen sulply
of humius will also be provided for. The potassium  content
of the normal soils of this region is so great that there
is no liklihood of it ever being reduced to the point where
it will be necessary to use commercial potassium. On peaty
ull(d alkali soils potassium  can be used with profit.

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