188 



ANNUAL, REPORT OF THE 



Off. Doc. 



PRACTICAL RATING OF SOILS BY PLANT-FOOD PERCENT- 

 AGES, ACCORDING TO PROF. MAERCKER, HALLE STA- 

 TION, GERMANY. 



Grade of Soil. 



ctf 



O 



Lime. 





>. 



■o 

 c 



iri 



a 

 u 



o 



o 



Poor, 



Medium, 

 Normal, 

 Good, .. 

 Rich, .. 



Below 0.05 

 0.05—0.15 

 0.15-0.2.5 

 0.25—0.40 



Above 0.40 



Below 0.05 



.05— .10 



.10- .15 



.15— .25 



Above .25 



Below .10 

 .10— .25 

 .25— ..50 

 .50—1.00 



Above 1.00 



Below .05 

 .05— .10 

 .10— .15 

 .15— .25 



Above .25 



These ratings agree well with American experience outside of the 

 arid regions. 



I give below the results of analyses by strong acid of a number 

 of Pennsylvania soils, as respects the constituents of most interest 

 to us: 



t 



E 



u O 



6" 



In Fine Material. 



a 





TO O 



d 

 c o> 



O V 



LIMESTONE SOILS. 



1. Hagerstown Loam, Donegal, Lan- 



caster CO. : 



Surface, 



Sub-soil 



2. Conestoga Loam, Rocky Spring, 



Lancaster oo. : 



Surface 



Sub-soil . 



3. Nittany Valley, Limestone "Silt 



Loam," State College 



4. Limestone Clay, Morrison's Cove, 



Bedford co 



OTHER SOILS. 



5. Iron Bearing Clay, Edgely (Arch- 



aean Rock) 



6. Micaceous Clay, Haverford, Dela- 



ware CO., 



7. Norfolk Gravelly Loam, Marietta, 



Pa.: 



Alexander 



S. Garber. N. of Marietta 



9. River Loam, "Wysox, Bradford co. : 



Surface 



Sub-soil, 



10. Norfolk Silt Loam, Blanchard, 



Centre co 



11. "Glacial Loam," Scrubgrass town- 



ship, Venango CO 



PENN SANDY LOAM. 



12. Mastersonville (Level upland) 



13. Risser (Gentle slope) 



14. Halderman (Gentle slope) 



15. Olewinder (Foot of steep slope), .. 



16. Burkholder (near top of gentle 



slope). 



Surface 



Sub-soil 



Range P. S. Loam: 



Surface 



11.4 

 13.2 



18.8 

 16.0 



60.0 



12.0 



40.0 



5.5 



6.8 



11.3 



9.0 



13.0 

 13.0 



5.5-13.0 



.62 



.67 



.67 

 .it 



.34 



.805 



.28 



.501 

 .111 



.39 

 .55 



.33 



.27 



.21 

 .21 

 .26 

 .364 



.15 



.175 



.15-. 36 



.61 

 .62 



.41 

 .25 



.26 



.29 



.22 



•.392 

 .150 



.62 

 .37 



.29 



.08 



.187 



•.347 



.214 



.874 



.330 

 .210 



.187-. 874 



.110 



.094 



.«S2 

 .116 



.138 



.062 

 .056 



.166 

 .073 

 .096 



