(Nov. i6, 1914 Pecan Rosette 153 



Of the remaining 7 trees in the first group, 4 continued healthy for two 

 seasons and were dug up. One was badly rosetted the following season, 

 1 showed a slight trace of the disease at two years and was dug up, 

 and the last tree, which was normal at the time of observation in 1903, 

 1904, and 1912, showed a distinct case of rosette in 19 13. Of the 33 

 remaining trees of the second group, 16 remained normal through two 

 years, and were cut out, 5 were normal at the time of all observations, 

 while 12 at one time or another showed distinct symptoms of rosette. 

 It will be noted that the percentage of trees contracting the disease did 

 not differ greatly in the two cases. 



In the same orchard, during the fall and early winter of 1904-5, 35 

 healthy trees, comprising 11 varieties, were set in holes occupied by 

 rosetted trees within one year. Likewise, 1 1 trees, comprising 7 varieties, 

 were set after healthy trees had been removed or in places previously 

 unoccupied. Observations in 1912 and 1913 showed 33 trees of the first 

 group with pecan rosette and only 2 normal. Of the second group, 6 

 contracted rosette, while 5 were normal in appearance. 



Similarly in February, 1908, 27 trees of 7 varieties were set after ro- 

 setted trees, and 4 trees of 3 varieties in vacant places or after healthy 

 trees. Observations in 1912 and 1913 showed 24 trees of the first group 

 to be rosetted, and 3 healthy. In the second group 2 were rosetted, 

 while 2 were healthy. 



In the winter of 1904-5, 10 rosetted nursery seedlings at Cairo, Ga., 

 were transplanted to a part of the same field previously unoccupied by 

 pecan or other hickory trees. Observations during October, 1905, 

 showed 6 trees apparently normal, 3 with symptoms of rosette on the 

 older leaves, but with the later growth normal in appearance, and i 

 with traces of rosette. The following August, 9 trees appeared healthy, 

 and I presented a doubtful case of rosette. In August, 1907, all 10 

 trees were apparently normal. In February, 1908, 2 trees which had 

 died from unknown causes were replaced with health}' trees of the Stuart 

 variety. The next observation, made in September, 1912, showed 6 

 distinct cases of rosette (including the 2 Stuart pecan trees above 

 mentioned), 2 trees with doubtful symptoms of rosette, and 2 normal. 

 The last note, made in August, 1913, showed 5 distinct cases of rosette, 

 the same 2 doubtful cases, and 3 normal trees. Four of the rosetted trees 

 were much improved in appearance over that of the preceding season. 



Forty-three rosetted nursery trees at Glen St. Mary, Fla., were trans- 

 planted from the nursery row (March, 1907), where the water table was 

 about 18 inches below the surface, to another part of the place where 

 the soil was a loamy sand underlain by clay, with the water table at a 

 considerable distance below the surface. Owing probably to the late 

 spring transplanting, 18 of the trees died without putting out leaves. 

 Of the remaining trees (October, 1907) 18 showed distinct symptoms of 



