STATE POMOLOGICAL SOCIETY. 



95 



to secure and interpret their answers wholly impartially and 

 without the slightest personal interest in the outcome. 



The results considered here are from nine experiments, lo- 

 cated in different parts of the state on seven different types of 

 soil. They also involve 1991 trees, 588 of which (in Experi- 

 ments 331, 333 and 337) were planted expressly for the present 

 experiments. Four of the experiments, — Nos. 217, 218, 219, 

 and 221 — were started in 1907 and the remainder in 1908. The 

 data on growth are obtained from annual measurements of all 

 the trees at definite points on the trunks, and the data on yields 

 are secured from the total annual production of fruit. This 

 fruit is studied from three view-points, — those of yield, color 

 and average size. The total amount of fruit thus examined 

 during the past six years is 1,350,392 pounds or over 27,000 

 bushels. The location, soils, present ages of trees, and other 

 general features of our cultural-method experiments are shown 

 in Table I. 



TABLE I.— LOCATION AND OTHER DATA ON THE ORCHARD CULTURE 

 EXPERIMENTS, CONDUCTED BY THE PENNSYLVANIA STATE COLLEGE. 



1 . The addresses of the op ners of the orchards in which these experiments are located 

 are as follows: 217, J. H. Ledy, E. Favetteville ; 218, Ed. Nicodemus, Waynesboro; 

 219, Jos. R. Sleek, New Paris; 221, F. H. Fassett, Meshoppen; 331 and 333, Department 

 of Experimental Pomology, State College; 336, A. D. Strode, Westchester; 337, Rev. 

 A.M. Keifer, Greenville; 338, J. B. Johnston, New Wilmington. 



2. Experiment 333 is devoted entirely to a comparison of cover crops, in which their 

 relative effect on the trees and the ultimate reasons for these effects are the prime ob- 

 jects of study. 



