CONTENTS. 



PAGE 



History of plots ........... 127 



The South Soil Test 128 



Cropping system .......... 128 



Fertilizer treatment .......... 128 



Lime history ........... 129 



Precipitation and frost records ........ 129 



Yields 129 



The first ten corn crops ......... 130 



The check plots 130 



The effect of potash 132 



The destructive treatments ....... 133 



Maniu-e versus fertilizer ........ 134 



Response of corn to fertilizer nitrogen ..... 135 



The last three corn crops ......... 138 



The hay crops .......... 139 



Financial interpretation ......... 140 



The North Soil Test 140 



History 140 



Fertilizer treatment .......... 140 



Variation in checks .......... 142 



Effect of lime and of fertilizer applications ...... 142 



Effect of lime on the availability of soil potash ..... 143 



Miscellaneous effects of fertilizers on crops ...... 148 



General summary ........... 149 



Appendix ............ 150 



