EXPERIMENT STATION BULLETINS. 307 



variable. The plant is very vigorous, and occasionally over-productive to 

 such extent as to seriously affect the quality of the fruit. 



Worden is a typical Concord seedling, with a larger bunch and berry, of 

 somewhat improved quality, as well as earlier. It is, to some extent, popular 

 as a market variety. 



Wyoming, occasionally known as Wilmington Red is, at the best, but a 

 slight remove from the wild type and, with the many more recent and 

 greatly improved varieties, it can scarcely be considered worthy of 

 cultivation. 



PLUMS (Pminus). 



Insects have been less persistent, than in previous years, in their attacks- 

 upon the foliage and fruit of the plum. 



A little Paris green was applied in connection with the spray, but jarring 

 has been the chief reliance for defense against the " Little Turk." 



Upon a few trees, growing in light soil, the rose chafer (Macrodactylus 

 subspinosus),}ia8 been troublesome, as has been the case for several years;, 

 since poisonous sprays prove ineffectual, hand-picking was resorted to for 

 their suppression. 



The slug {Eriocampa Gerasi),h.a8 been less troublesome this season than 

 last and has yielded readily to a spray of tobacco water. 



In common with the entire plantation, the plums received a spray of 

 Bordeaux late last autumn. 



On April 10 and 11, last, they were given a spray composed of 4 lbs. cop- 

 per sulphate, 3 lbs. stone lime, and 2^ oz. Paris green in 32 gals, water. 



On June 8 they were again sprayed with the same preparation. 



On June 28 a spray of kerosene emulsion was applied to subdue the 

 slug, using I lb. soap, 2 gals, kerosene, in 10 gals, water. 



July 14 and 15 a spray was applied, using 2 lbs. copper sulphate, 1^ lbs.. 

 lime, and 2^ oz. Paris green in 32 gals, water. Several varieties of plum- 

 lost more or less of their older foliage, apparently as the result of this last 

 application. (Due probably to the use of air-slaked lime.) 



Aug. 7 and 8 they received a final spray of tobacco water, to subdue the 

 slug which had again appeared in considerable numbers. 



The following table includes only such varieties of plum as have 

 bloomed and fruited (one or both) this year. 



The species to which several of these varieties should be assigned is yet 

 an open question among botanists, for which reason, in such cases, a mark 

 of doubtfulness is appended. 



This being the first crop of nearly all the varieties of plum here tabu- 

 lated and the crop, in most cases, comprising but few specimens, it seem& 

 inexpedient to venture upon descriptions or estimates of values. These- 

 are, therefore, deferred to await subsequent developments. 



