3 - 



POMOLOGICAL PARAGRAPH 



Trees on Dwarfing Rootstock in New York State - The New York Fruit 

 Tree and Vineyard survey reflects the national trend of increased plant- 

 ings of apple trees on dwarfing rootstocks. Approximately 51 percent of 

 the trees less than 12 years old in the western counties of New York 

 State are on dwarfing rootstocks, and about 29 percent of the trees less 

 than 12 years old in the eastern counties' are on these stocks. 



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PRODUCTIVENESS OF BLUEBERRY VARIETIES 



William J. Lord 

 Department of Plant and Soil Sciences 



Dr. A.D. Draper, et al. (Maine Agr. Exp. Sta. Misc. Rpt. 118. 1966, 

 pp. 93-96) reported that in replicated trials of blueberry varieties and 

 selections that were set in 1959, Herbert, Bluecrop and Blueray produced 

 the highest yields over a 4-year period (1961-6M-) at Hammonton, New 

 Jersey. The mean yields per plant for these 3 varieties over the i+-year 

 period were 11.0 pints, 9.2 pints and 7.5 pints, respectively. Collins, 

 Berkeley, Earliblue and Coville, the other named varieties tested, pro- 

 duced mean yields over the same L|--year period of M-.7 pints, 4.1 pints, 

 3.9 pints and 3.0 pints, respectively. None of the selections yielded 

 as well as Herbert, Bluecrop or Blueray. 



Cross pollination was possible at the experimental site at Hammon- 

 ton and the plants of all varieties and selections grew vigorously; 

 therefore. Draper et al. concluded that the yield differences were 

 largely a reflection of differences in fruit set and development. 



In a recent letter to the writer, Dr. Draper stated that the unpro- 

 ductiveness of several varieties such as Earliblue and Coville appears 

 to be related to pollination. Dr. Draper, who is a Research Geneticist 

 with the Fruit and Nut Crops Research Branch of the U.S.D.A., further 

 stated that they would continue to recommend Collins, Berkeley., Earli- 

 blue and Coville in areas of high bee activity. The Darrow variety, 

 however, has been released as a possible replacement for Coville, but 

 as yet the winter hardiness of this variety is not known. 



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