THE NATIONAL ^NURSERYMANS 
236 
BULLETINS OF INTEREST TO NURSERYMEN 
By R. A. Cushman, Agent and Expert. VI. Notes on the 
Peaeh Bud Mite. By A. L. Quaintanee, in Charge of 
Deeiduous Fruit Inseet Investigations. VII. The Grape 
Seale. By Janies F. Zimmer, Entomologieal Assistant. 
Pp. 132, pis. 19, figs. 27. (Bulletin 97, Bureau of 
Entomology.) Priee, 25 eents. 
Papers on Deciduous Fruit Insects and Insecticides’ 
The Fruit-Tree Leaf-Roller. By John B. Gill, Entomologi¬ 
eal Assistant. Pp. iv-l-91—no, pis. 5. (Bulletin 116, 
Part 5, Bureau of Entomology.) Priee, 10 cents. 
New Mexico Station, State College, L. Foster, Director. 
Grape Crown Gall Investigations. By F. Garcia and 
J. W. Rigney. (Bulletin 85, pp. 28, figs. 4.) 
Tests of the resistance to crown gall of a number of varie¬ 
ties of grapes are reported, together with a description of the 
different varieties. A description of the disease as reported 
in Bulletin 183 of the Bureau of Plant Industry of this depart¬ 
ment is included. 
Wisconsin Station, Madison, H. L. Russell, Director. 
The Wisconsin Nursery and Orchard Inspection Ser¬ 
vice, 1910-1912. By J. G. Sanders. (Bulletin 227, pp. 
38, figs. 13.) 
This bulletin gives an account of the nursery inspection 
work in the State during 1910-1912, together with a list of 
names and addresses of licensed nurserymen and dealers, and 
brief descriptions of the more important nursery insects and 
diseases and their control. Copies of the State nursery and 
orchard inspection law and of the insecticide and fungicide 
law are appended. 
Iowa Station, Ames, C. F. Curtiss, Director. 
The Pear Slug {Caliroa cerasi [Eriocampoides limacina]). 
By R. L. Webster. (Bulletin 130. popular edition, pp. 8, 
figs. 5.) 
This is a popular edition of this bulletin. 
Summary of Bulletin No. 355 on Grape Stocks for Arner"! 
can Grapes by U. P. Hedrick, issued by the New York 
Agriculture Experiment Station. 
Different species of grapes show wide variations in 
adaptability to natural and cultural conditions. Cannot 
grape-growers take advantage of these variations and graft 
varieties that fail under some conditions on roots of those 
that thrive under the same conditions? 
The possibility of improving the viticulture of New York 
by such grafting was the inspiration of an experiment at this 
vStation to test various root stocks for the best varieties of 
American grapes. 
In this experiment three groups of varieties have been 
grafted on vSt. George, Rijiaria Gloire and Clevener stocks and 
a fourth group on their own roots. The varieties grafted on 
these stocks were: Agawam, Barry, Brighton. Brilliant, 
Campbell Early, Catawba, Concord, Delaware, Goff, Herber, 
Iona, Jefferson, Lindley, Mills, Niagara, Regal, Vergennes 
Winchell and Worden. 
The experiment was tried on the farm of 1 . A. Wilcox, of 
Portland, Chautauqua County, New York, in the Chautau¬ 
qua Grape Belt. The vines were grown in two plats on two 
kinds of soil—Dunkirk gravel and Dunkirk clay. The plant¬ 
ing plan and all of the vineyard operations were those com¬ 
mon in commercial vineyards. 
The original plan was to graft only on growing stocks but 
the loss of a large proportion of the grafted plants the first few 
years made it necessary to resort to bench-grafting on rooted 
plants as well. Later experiences show that bench-grafting 
on cuttings is probably the best method of starting a grafted 
vineyard. 
Yearly accounts of the vineyard show that the vines passed 
through many vicissitudes. The experiment was started in 
1902 when St. George and Riparia Gloire stocks from Cali¬ 
fornia were set and grafted in the field. Many of these died 
the first year. The winter of 1903-04 was unusually severe 
and many more vines were either killed or so severely injured 
that they died during the next two years. The vines on St. 
George, a very deep-rooting grape, withstood the cold blast. 
Fidia, the grape root-worm, was found in the vineyards 'early 
in the life of the vines and did much damage in some years. 
In the years of 1907 and 1909 the crops were ruined by hail. 
But despite these serious setbacks it was evident through¬ 
out the experiment that the grafted grapes were better vines. 
And so, though the experiment is a partial failure through 
accidents, the results are thought to be worth publishing. 
Tables II and III show that the grafted grapes are more 
productive than those on their own roots. As an example of 
the differences in yield, a summary of the data for 19 ii from 
Table III may be given. In this year an average of all the 
varieties on own roots yielded at the rate of 4.39 tons per acre; 
on St. George, 5.36 tons; on Gloire, 5.32 tons; on Clevener, 
5.62 tons. The crops on the grafted vines were increased 
through the setting of more bunches and the development of 
larger bunches and bemes. 
The grapes bn the grafted vines ripen a few days earlier 
than those on their own roots. This holds, in particular, as 
regards Gloire and Clevener, while with St. George a few 
varieties were retarded in ripening. Time of maturity is very 
important in this region, where there is danger of early frost 
to late ripening sorts and where it is often desirable to retard 
the harvest time of early grapes. 
In the behavior of the vines the results correspond closely 
with those given for yields. In the relative growth ratings 
of varieties on different stocks the varieties on their own roots 
were rated in vigor at 40; on St. George, at 63.2; on Gloire, 
at 65.2; on Clevener, at 67.9. There is no way of deciding 
how much the thrift of the vines depends on adaptability to 
soil and how much on other factors. Since all of the varieties 
were more productive and vigorous on grafted vines than on 
their own roots, it may be said that a high degree of con¬ 
geniality exists between the stocks and varieties under test. 
The experiment suggests that it would be profitable to 
grow some of the fancy grapes of the region on grafted vines 
