Nov. i6, 1914] 



Pecan Rosette 



165 



highly probable that seasonal climatic changes, such as variation in the 

 water content of the soil, may have at least an indirect relation to the 

 prevalence of the disease. 



ASH ANALYSES' 



Complete ash analyses were made of resetted and healthy leaves and 

 of resetted and healthy twigs from Cairo and Dewitt, Ga., and from 

 Belleview, Fla. In each case the diseased and healthy material was from 

 trees of the same age and variety and had received similar cultivation 

 and fertilization in the same orchard. The pure-ash analyses are given 

 in Tables III to V. 



Table III. — Ash analyses of leaves and twigs of the Stuart pecan from. Cairo, Ga., 



September, igia 



Table IV. — Ash analyses of leaves and twigs of the Van Deman pecan from Belleview, 



Fla., September, iqij 



Constituent. 



Total percentage of pure ash 

 SO, 



PA 



CI 



K2O 



NajO 



CaO 



MgO 



FI2O3 



AI2O, 



MiijOj 



SiOj 



Total 



Leaves. 



Resetted. Normal. 



Per cent. 

 4.68 

 7-31 



7-57 



•38 



18.76 



•38 



37-75 



2o. 66 



I. 90 



.40 

 4.83 



99.94 



Per cent. 

 4. 61 



5 

 8. 



16 



32 

 20. 



14- 



Stems. 



Resetted. Normal. 



Per cent. 

 3.68 

 6. 19 



8. 24 



■3° 



21-35 



2.23 

 44. 16 

 17.40 



Trace. 



•23 

 .26 



98-36 



Per cent. 



3-37 

 4.69 



12. 24 

 .40 



25.61 

 3-24 



36.56 



16. 71 



Trace. 



.26 

 .29 



' The ash analyses here given were made by the Bureau of Chemistry, Department of Agriculture. 



