8 BULLETIN 765, U. S. DEPARTMENT OF AGRICULTURE. 
Burley. Quality in Burley tobacco is largely a matter of the color 
and texture of the cured product. Several trials have shown that the 
resistant type is practically equal to the ordinary Burley varieties in 
these respects. The final criterion must be the relative prices brought 
on the warehouse floor. In this, the resistant Burley has so far shown 
itself to be equally as valuable as the ordinary Burleys. In the field, 
however, it seems that the top leaves do not color up as rapidly or 
as brightly as some of the best strains of ordinary Burley. The im- 
portance of this from a commercial standpoint is seemingly not 
great, although it is true that it may result in somewhat more “ red 
leaf.” The fact that the resistant Burley makes a more vigorous 
growth on partially sick soils, however, will generally result in a 
greater proportion of the higher priced grades, which, together with 
a larger total yield, may fully offset any disadvantage of slightly 
reduced color. Briefly stated, some of the best strains of the ordinary 
Burley may produce better quality on healthy soil, but on sick soil 
the resistant Burley will usually prove better in both yield and 
quality. 
The results attained up to the present time warrant the recom- 
mendation of the resistant type for growing on all sick soils in the 
Burley section on which it is to be expected that the ordinary varie- 
ties of White Burley will give unsatisfactory yields. It is hoped 
that in the near future the resistant character will be introduced into 
the best strains of ordinary Burley, so that they may be grown suc- 
cessfully on diseased as well as on healthy soils. 
EXPERIMENTS IN THE WHITE BURLEY DISTRICT OF KENTUCKY. 
The resistant Burley strains have been tested on several farms in 
the Burley section of Kentucky during the past three years. These 
demonstrations have been made on the farms of Mr. E. F. Shropshire, 
Lexington; Dr. S. H. Halley, Paynes Depot; Mr. William Feck, Lex- 
ington; Mr. N. H. Witherspoon, Winchester; and Mr. J. Waller 
Rodes, Lexington. Several others also have grown some of the strains 
on trial. The progress of the work from the standpoint of the demon- 
stration of disease resistance has been hampered somewhat by the 
difficulty of finding growers who were willing to put in third or 
fourth crops in succession on the same soil, since it was felt that a 
crop failure with Burley would be almost certain to follow. Such 
soils, however, have been obtained in a few instances. On the farm | 
of Mr. E. F. Shropshire, Maysville Pike, Lexington, a plat which 
had already grown three crops of Burley was secured in 1916. Re- 
sistant and ordinary Burleys have been planted on this land for the 
last three years. The results each season have been striking. The 
ordinary Burleys have made practically no growth, while the re- 
