- 28 - 



Tenn. Breeding for Fire Blight Resistance . To develop varieties 

 of pears, apples, and quinces combining resistance to fire 

 blight and resistance to other diseases with commercial quality. 

 Hort. 117 



Va. Breeding Nev Varieties of Apples Especially Adapted to 



Conditions In Virginia ^ To (1) develop new varieties of apples 

 well adapted for commercial production, study types late In 

 season of blooming, reslsteint to disease and insects; and, (2) 

 conduct fundamental work including studies of pollination values 

 and cytologlcal relations of Virginia apple varieties and pro- 

 duction of polyploid types of apples, 

 Hort. 86003 



Varieties 



Ohio Multiplication, Preservation and Determination of Potential 

 Value of Pear Varieties for North Central States Introduced Into 

 and Collected within the United States . To (1) determine adapt- 

 ability of newly introduced or recently produced pear varieties 

 to the environmental conditions of the North Central States; 

 and, (2) preserve those varieties having potential value either 

 for plant breeding or for other programs in the North Central 

 States where true -to -name source of plant material is necessary. 

 Hort, 73 (NC-7) 



Cultvire 



Colo . The Effect of Timing, Method of Application and So\irce of 

 Nitrogen on Delicious Apples . Learn effect of timing, method 

 of application, and soiirce of N on chemical composition, growth, 

 color and yield of Delicious apples in Western Colorado, 

 Hort., Agron. kZ 



Del, Apple Soil Management . To determine the best soil manage- 

 ment practices for ai>ple orchards in southern Delawsire. 

 Hort. 50 -H 



Maine Fertilizer Experiments with .^ples . To (l) determine effect 

 of major nutrient elements and mulches on yield and quality of 

 apples; (2) determine if effect of mulching can be attributed 

 to addition of mulch itself, or to suidition of extra nutrients 

 it contains; (3) study effect of 2 N rates with and without 

 supplemental Mg on growth and yield of young apple trees; (k) 

 study effect of several mulch materials on root distribution of 

 young apple trees; and, (5) establish general levels of nutri- 

 tion in apple trees through the state by use of foliar suialysls, 

 Hort. 8 



