218 CITRUS FRUITS AND THEIR CULTURE. 



ior of seedling trees, it is successful on soils of intermed- 

 iate moisture content. 



The pomelo root system is well developed and well 

 distributed in the soil and, so far as observed in Florida, 

 no cases of mal-di-goma have been noted and none have 

 been authentically reported. In regard to its behavior 

 in California, J. W. Mills, in Bulletin 138, California 

 Experiment Station, says, "It is resistant, to a certain 

 extent, to the form of gum disease that attacks the roots 

 of citrus trees." 



LIME (CITRUS LIMETTA). 



In the southern east coast of Florida this stock has 

 been tried to some extent and the results on rocky soils, 

 or those underlaid with rock, appear to be quite satisfac- 

 tory. Trees on this root upwards of twenty years old 

 may be seen at Palm Beach, Florida, and they are cer- 

 tainly growing there under conditions where it is ex- 

 tremely doubtful whether any other stock now in use 

 would have succeeded. It may reasonably be expected 

 that this stock w r ill be used to a greater extent than it 

 now is. It is probably better adapted to tropical regions 

 than the trifoliate orange and may be instrumental in 

 extending the citrus industry into those regions. Lime 

 trees succeed well on dry soils and make a good growth. 



