AN ABNORMAL ORCHARD SOIL 5 



Growth of the trees was greater in some cases and in others less on the plots 

 that had been variously fertilized than on the unfertilized plots. Among the 

 unlimed plots only those receiving nitrogen and possibly phosphorus showed 

 better growth. On the limed plots the evidence is quite emphatic that potash 

 was the element most beneficial to growth. 



The response of the plants as shown by shoot growth is also given in Table 3. 

 The shoot growth of the apple and peach trees (Fig. 1) behaved much the same 

 as trunk diameter. The grape canes were cut back to two buds each year and the 

 resulting new growth measured. On none of the fertilized plots, with or without 

 lime, did cane growth exceed the average of that on the check plots that had never 

 been fertilized or limed. This lack of response to fertilizers may be related to the 

 severe pruning the vines received each year. 



The apple trees each year showed more or less severe leaf scorch. Estimates of 

 its severity were made in several years. Plot averages in four different years are 

 shown in Table 4. The highest numbers show the most severe scorch. No con- 

 clusion was ever reached as to what mineral deficiency the burn indicated. The 



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