. Our farm and building book. . A few years ago the idea wasprevalent that nitrogen was the mainissue. Agriculturists have solved thenitrogen problem in great measure,by growing legumes. But we dontknow how to provide sufficient phos-phorus to grow the legumes. Clover stock and the rotation of crops. Theislands of the sea were scraped cleanof their rich stores of guano. Thebattle fields of Europe and the cata-combs of Egypt were robbed of theirhuman bones, and millions of tons ofphosphates have been imported intoEngland from the United States. According to this record, it wouldseem that the so
. Our farm and building book. . A few years ago the idea wasprevalent that nitrogen was the mainissue. Agriculturists have solved thenitrogen problem in great measure,by growing legumes. But we dontknow how to provide sufficient phos-phorus to grow the legumes. Clover stock and the rotation of crops. Theislands of the sea were scraped cleanof their rich stores of guano. Thebattle fields of Europe and the cata-combs of Egypt were robbed of theirhuman bones, and millions of tons ofphosphates have been imported intoEngland from the United States. According to this record, it wouldseem that the soil experts of Englanda hundred years ago, realized thegreat problem that is confronting thefarmers in the United States at thistime. The problem of how to pro-vide sufficient phosphoric acid to en-able the soil to maintain a balance offertility sufficient to produce profit-able yields. We have been exportingphosphates in a prodigal manner. Un-less we have hidden supplies to de-velop later, we may pay dearly for ,5 KMG ft* KlTAk. Rig for Raising Barn Bents. is a gross feeder, and it is very fondof phosphorus. Instances are on record where theapplication of one ton per acre ofground rock phosphate, increased thecrop production more than 100 percent. On some small experimentplots, as much as 200 per cent increasehas been secured, simply by feedingsufficient phosphorus into the is up to the scientific farmers todevise means of supplying phosphorusand so cropping the land as to con-serve our resources in this over the United States crops arebeing grown that are continually re-ducing the available supply of phos-phorus. To the present time, no con-certed effort has been put forth tocheck this depletion. Speaking of phosphorus, the farm-ers of the United States are followingthe experience of English than a century ago, the produc-tion of wheat in Great Britain wasabout the same per acre as the aver-age production in the United Statesat the present t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthousepl, bookyear1915
