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SOIL 4234

  

Soil Nutrient Management, Oklahoma State University
 Soil Nutrient Management

Field Soil Sampling

 

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SOIL HANBOOK !!!!!!!!

Results and Report:
Link to 2005 Results.

 Soil Samples File

Assignment Hint:
For Tables 2 and 3 for min, max, average recommendations use the
use soil test calculated values given, not average of vertical or by plot recommendations.


SOIL TEST RESULTS

 1.      Random sampling of the entire field.

Results of entire field random sampling, and splitting the random sample into two separate samples are given in Table 1.
 Table 1.  Soil test results* for composite samples from random sampling of entire field.

Sample  pH BI Lime NO3 - N N Reg. P P2O5 Reg.  K K2O Reg.
101-1 5.3 7   106   105   216  
101-2 5.3 6.9   103   101   184  
101 Average                  
102-1 5.2 7   79   78   172  
102-2 5.2 6.8   76   73   159  
201 Average                  
Difference, 101 and 102                  

 

*Units are lb per acre for N and ton per acre for ECCE lime.  Other values are indexes.

 2.      Grid-cell sampling.

 Results of sampling 24 individual cells, after obtaining a composite of 15 cores randomly taken from the entire area of each cell, are given in Table 2.

 Table 2.  Soil test results* for composite samples of each 1-acre cell

Sample  pH BI Lime NO3 - N N Reg. P P2O5 Reg.  K K2O Reg.
201 5.5 7   66   78   204  
202 5.6 7.1   108   141   204  
203 5.8 7.2   111   188   155  
204 5.3 7   52   110   123  
205 6.2     74   87   214  
206 5.8 7.1   100   105   182  
207 5.6 7   82   97   162  
208 5.5 7.1   94   105   166  
209 5.3 7   84   82   168  
210 6.9     92   146   205  
211 4.6 6.8   98   52   154  
212 5 6.8   56   50   176  
213 5 6.9   60   47   160  
214 5.4 7   120   141   228  
215 5.7 7.1   118   155   219  
216 5.7 7.1   97   138   215  
217 4.9 6.9   114   103   178  
218 5 7   87   91   175  
219 5 6.9   80   72   183  
220 5.1 6.9   64   30   199  
221 4.9 6.9   80   26   194  
min 4.6 6.8   52.0   26.0