288 The Ohio Naturalist. [Vol. XIV, No. 6, 



quately drained and aerated. During rainy seasons we apparently 

 have less of this disease than during hot and dry weather. Indi- 

 cations are that the soil fertility question is not directly involved. 



Recommendations. In planting red raspberries, secure plants 

 from localities where raspberry curl does not occur. Grow varie- 

 ties which do best in your locality and which seem adapted to 

 your soil conditions. St. Regis seems to be a promising variety 

 not so susceptible to this disease. Early King and Herbert are 

 standard varieties doing well in some locahties. The former is 

 is the only red variety which can be economically grown in Lucas 

 county, Ohio, and is entirely rei^lacing all other varieties. 



Plant on a rather light or medium heavy soil which is provided 

 with adequate drainage. The addition of barnyard manure well 

 incorporated into the soil is of value in producing vigorous and 

 thrifty plants. Where irrigation is possible, it is highly beneficial 

 and is advisable, especially during adverse seasons. 



Plants affected with raspberry curl are best removed and 

 destroyed, as they are worthless for the production of marketable 

 fruit. Never use disease plants for propagation purposes. 



The application of fungicides is useless in controlling raspberry 

 curl. 



BIBLIOGRAPHY. 



Clinton, G. P. 1903. Report of the Station Botanist. Conn. 



Ag. Expt. Sta. Rpt. pt. 4. pp. 354-.355. 

 Detmers, F., 1891. Diseases of the Blackberry and Raspberry. 



Ohio Expt. Sta. 4: 128-129. No. 0. Oct. 1891. 

 Green, S. B., 1894. Leaf Curl of Raspberrv. Minn. Sta. Ann. 



Rept. 1894: 2.30. 

 , 189.5. Small Fruits, Variety Tests. Minn. Sta. bul. 



4.5:321-32.3. 

 Lawrence, W. H., 1912. Insect Pests and Diseases of Bush 



Fruits. Better Fruit Magazine, 7:18. 

 Melchers, L. E., 1913. Mosaic Disease of the Tomato and 



Related Plants. Ohio Naturalist, 13:169. No. 8. pi. 3. 

 Paddock, W., 1904-.5. Eighteenth Annual Report of the Colo- 

 rado Agricultural Experiment Station. 1904-5:44-45. 

 Sackett, W. G., 1910. Thirty-second Annual Report of the 



Colorado State Board of Agriculture. 1910:93. 

 , 1911. Twenty-fourth Annual Report of the Colorado 



Agricultural Experiment Station. 1911:18. 

 Stewart, F. C. and Eustace, H. J., 1902. Raspberry Cane 



Blight and Raspberry Yellows. New York Station bul. 



220:302:364. 



