INVESTIGATIONS IN SOIL MANAGEMENT 



BEING THREE OF SIX PAPERS 



ON THE 



Influence of Soil Management 



UPON THE 



Water-Soluble Salts in Soils 



AND THE 



Yield of Crops 



BY 

 F. H. KING 



Amounts of Plant Food Readily Recoverable from Field Soils by Distilled Water. 



Relations of Crop Yields to Amounts of Water-Soluble Plant-Food Materials 

 Recovered from Soils. 



"D" Absorption of Water-So'.uble Salts by Different Soil Types. 



"E" Influence of Farm Yard Manure upon the Water-Soluble Salts of Soils. 



"F" Movement of Water-Soluble Saits in Soils. 



"G" Relations of Differences of Yield on Eight Soil Types to Difference of Climato- 

 logical Environment. 



The six papers constitute the Report of the Chief of the Division of Soil 

 Management, for 1902 and 1903, but the three here printed have been refused 

 Departmental publication by the Chief of the Bureau of Soils. 



MADISON, WIS.: 



Published by the author, with permission of the Secretary of Agriculture. 



1904. 



