. Annual report of the Missouri State Board of Agriculture. Missouri. State Board of Agriculture; Agriculture -- Missouri. 346 Missouri Agricultural Report. counties of Audrain, Monroe, Ralls,. Pike, Montgomery, Boone, Randolph, Shelby and Marion, but occurring in greater or lesser areas in most of the counties of the northeastern quarter of the State. This soil while originally quite fertile, where the water could be successfully removed, has been depleted by constant crop- ping to corn, until today it stands in need of careful soil treatment. Manure and rock phosphate as compared with no tre
. Annual report of the Missouri State Board of Agriculture. Missouri. State Board of Agriculture; Agriculture -- Missouri. 346 Missouri Agricultural Report. counties of Audrain, Monroe, Ralls,. Pike, Montgomery, Boone, Randolph, Shelby and Marion, but occurring in greater or lesser areas in most of the counties of the northeastern quarter of the State. This soil while originally quite fertile, where the water could be successfully removed, has been depleted by constant crop- ping to corn, until today it stands in need of careful soil treatment. Manure and rock phosphate as compared with no treatment on corn. Monroe City Ex- perimental Field, 1907. No treatment produced bu. per acre; manure and rock phosphate, bu. per acre. if it is to yield the proper returns. The analysis of this soil, as we have already indicated, shows it to lack from one-third to one-half its nitrogen and approximately two-thirds its phosphorus, while the potassium supply is ordinarily ample if it can be made avail- able to crops. EXPERIMENTS ON N. E. MISSOURI FLAT PRAIRIE (UNIONVILLE) . EXPERIMENTS OX CORN—1905. Soil treatment. Yield, Bu. Increase, Bu. Value of increase. Cost of treatm't. Net return. $ $ .50 + 82 37 + .49 Lime phosphorus potassium — .01. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Missouri. State Board of Agriculture. Jefferson City, Mo. : Missouri State Board of Agriculture
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