644 EXPERIMENT STATION RECORD. 



Discussing tlie value of foreign varieties of potatoes introduced iuto this 

 country, it is stated that very few have proved satisfactory. For the most 

 part those which have come under the author's observation have produced 

 tubers of inferior table quality, although some were highly resistant to dis- 

 ease. It appears that high disease resistance of the vine was correlated with 

 a low and undesirable tuber yield. 



Chlorosis of sugar cane, P. L. Gile and C. N. Ageton (Porto Rico Sta. Rpt. 

 1913, pp. 13, 14). — ^A brief report is given of investigations on the occurrence 

 and cause of chlorosis of sugar cane. 



Two crops of chlorotic cane have been under observation, and the authors 

 state that there did not appear to be any definite period when it became dis- 

 eased. As a rule ratoon cane seems to be affected more severely and generally 

 earlier than plant cane. In some cases the appearance of the diseased cane 

 was much improved after a rainy period, while in others new leaves appearing 

 directly after the rain were strongly chlorotic. 



The areas of chlorotic cane so far have been confined to strongly calcareous 

 soils, although all cane grown on calcareous soils is not affected. Some small 

 areas are known that have been planted year after year that always produce 

 chlorotic cane and many of these are on the slopes of limestone hills. 



Tomato diseases, J. L. Hewitt (Arkansas Sta. Circ. 21 (1914), pp. 4)- — 

 Popular descriptions are given of the late bliglit, black rust, fungus wilt, bac- 

 terial wilt, blossom end rot, and root knot of tomatoes, with suggestions for 

 their control. 



Some important diseases of tomato in North Carolina, H. R. Fulton 

 (North Carolina Sta. Circ 19 (1914), pp. 8). — This publication is designed to 

 give information regarding tomato diseases for the benefit of members of tomato 

 clubs which have been formed throughout the State. Brief descriptions are 

 given of the more common diseases, with suggestions for their control, which 

 include the proper selection of seed and cultivation of plants, together with 

 spraying where this method of treatment is known to offer i^rotection. 



Two tomato diseases (Agr. Neivs IBarbados], 13 (1914), No. 315, p. 114). — 

 Descriptions are given of the leaf mold due to Cladosporimn fulvum and the 

 blossom end rot of tomatoes, which is considered due to bacteria. 



For the first disease, where conditions are favorable for the development of 

 the fungus the author recommends spraying at frequent intervals with a 

 4 : 4 : 50 Bordeaux mixture. For the second disease it is said that attention 

 to the water supply and preventing excessive transpiration will reduce the 

 amount of disease present. 



Fruit diseases in Montana, D. B. Swingle (Montana Sta. Circ. 37 (1914), 

 pp. 263-330, pi. 1, figs. 21). — The purpose of this publication is to give fruit 

 growers of the State information to aid them in combating the diseases in 

 their orchards. After a general discussion of fruit diseases and methods of 

 combating them, the author describes the apple blight, crown gall, scab, Baldwin 

 spot, and Jonathan spot ; pear blight, crown gall, and scab ; peach leaf curl and 

 crown gall ; gooseberry mildew ; raspberry and blackberry crown gall ; and 

 strawberry leaf spot, with specific directions for combating the different dis- 

 eases. 



The blight of apples, pears, and quinces, B. S. Pickett (Illinois Sta. Circ. 

 172 (1914), pp. 10, figs. 4). — A description is given of the blight of apples, 

 pears, and quinces due to Bacillus amylovorus, the author stating that this 

 disease severely attacks not only these, but a number of other plants belonging 

 to the same family. 



The symptoms of the disease are popularly described and suggestions given 

 for preventive and i-emedial measures to be adopted against it. These consist 



