EXPERIMENT STATION BULLETINS. 229 



amount of time and labor, is deferred till the trees shall be in condition 

 to supply the particulars of fruitage also. 



PLUMS— Prunus. 



Of the plum, eighty-one varieties have now been planted: in 1888, four- 

 teen varieties; 1889, four varieties; in 1890, fifty-seven varieties, and in 

 1891, six varieties. 



In most cases two trees of each variety have been planted, except that 

 in several cases but a single tree could be obtained. In such case a stock 

 has been planted in the vacant place and budded or grafted with the 

 desired variety. 



Of the varieties thus planted the following are the botanical characters, 

 .so far as they can now be determined: 



14 Americana. . 3 Chicasa. . 



42 Domestica. 1 Myrabolan. 



10 Orientalis. 11 Undetermined. 



Several of the older trees showed more or less bloom, and a few set 

 •some fruit; but specimens were so few and scattering that it was felt to be 

 impracticable to save them from being punctured by the curculio, 

 Conotrachelus nenuphar, who accordingly appropriated the crop, besides 

 leaving his mark upon more or less of the scattering peaches upon the 

 adjacent trees. 



The Rose Chafer (Macrodactylus subspinosus), which, last year, 

 attacked the foliage of the plum to a slight extent, came this year in 

 greatly increased numbers, riddling the foliage of a few trees. They were 

 kept in check chiefly by hand-picking. 



The slug (Eriocampa cerasi) has also, this season, attacked the plum 

 foliage with great persistence, renewing the attacks with fresh forces, so 

 soon as the remedies applied had become spent. 



The Americana, Chicasa, and Orientalis varieties have been nearly or 

 quite exempt from the attacks of fungi, which has been far from true of 

 many of the varieties of Domestica, many of which have obviously been 

 seriously checked in growth by the injury of their foliage. 



The disease known as plum pockets which, last year, attacked a few 

 trees of Chicasas, has appeared again this season in a very few cases. The 

 cutting away and burning the diseased wood seems to be gradually sub- 

 duing it. 



The tabulation and classification of varieties, with dates of blooming, 

 etc., is deferred till, from the trees in fruit, this can be done with more 

 correctness and certainty. 



In connection with this it may be remarked that several of the recently 

 imported Oriental plums, received from P. J. Berckmans of Georgia, in 

 the spring of 1890, came through the past winter entirely uninjured. 

 Even the Kelsey, which has been reported tender, so far south as Ohio 

 and Pennsylvania, although left fully exposed, came out in good condition 

 and made satisfactory growth the present season. 



GRAPES— Vitis. 



Of the grape, forty-one varieties were planted in 1888; forty additional 

 varieties in 1889; forty-five others in 1890, and eight varieties, additional, 

 in 1891 ; making a total of one hundred and thirty-four varieties now upon 

 the place; with the exception of a single variety — the Rockwood — which, 

 though planted in 1890, and replanted in 1891, has failed to grow in both 

 cases. 



