ANNUAL REPORT, 1935 69 



one case of fifty misnamed trees coming from an inspected nursery. This 

 may be a case of erroneous labeling after digging, or it may be that the trees 

 were grown in an uninspected nursery and not in the inspected nursery. All 

 this work is done in vacation time and without expense to the Station. 



The Genetic Composition of Peaches. (J. S. Bailey and A. P. French.) 

 During the winter of 1934-35 all fruit buds of the peach were again killed by 

 low temperatures so that no crossing work could be done in 1935. In the 

 spring of 1935, 1082 selfed and crossed seedlings were transferred from the 

 nursery to orchard blocks; also 44 budded trees from 12 selected seedlings 

 were set in an orchard block for further trial. 



Effect of Pruning Bearing Trees. (J. K. Shaw and O. C. Roberts.) The 

 results of this project were summed up in Bulletin 320 published during the 

 past year. While some of the work is being continued the project may be 

 considered completed. 



Comparison of Cultivation and Sod in a Bearing Orchard. (J. K. 



Shaw. ) This project has been carried on as for the past five years. The crop 

 was small on both Mcintosh and Baldwin. Probably the latter variety still 

 suffers from the cold winter of 1933-34 which hurt the trees though none were 

 seriously killed back. The two plots having a complete fertilizer continued to 

 do well. 



Tests of Different Amounts of Nitrate of Soda. (J. K. Shaw.) The 

 Baldwins in this orchard were severely injured by the cold of the winter of 

 1933-34 and three trees have been removed on this account. The practice of 

 fertilizing only in the off year is being continued and there was practically no 

 crop the past season. 



Comparison of Cultivation and Heavy Mulching for Apples. (J. K. 



Shaw. ) This project has been carried on as in the past six years. No fertilizer 

 has been used on the mulched plots since the project was begun in 1922. The 

 cultivated plots have received nitrate of soda at the rate of 300 pounds per 

 acre since 1930. The Wealthy trees have always been strongly biennial in 

 bearing and the Mcintosh has shown some tendency in this direction for the 

 last six years. All plots are keeping up production quite well. A bulletin based 

 on this project is in preparation. 



The Effects of Fertilizer Limitation on Fruit Plants. (J. K. Shaw.) 

 This project has continued as in the past. The trees on the limed plots that 

 received potash, alone or in combination, continued to grow better than those 

 on the unlimed plots; while the reverse is true on the plots that received 

 nitrogen and phosphorus, alone or in combination. On three of the four plots 

 that have received no fertilizer for more than forty-five years, there is little 

 difference between the limed and unlimed plants; on the fourth plot the un- 

 limed trees are better. 



Further tests for potash in the leaf petiole, using the method of Thornton, 

 confirm results reported last year. On the nitrogen-phosphorus plot, potash 

 in the petioles was very high on the unlimed part and very low on the limed 

 part. The same was true of the phosphorus plot. Otherwise the potash con- 

 tent followed the fertilizer applications rather closely but with some variation 

 in individual trees. 



Effect of Potash and Lime on Apple Trees. (J. K. Shaw.) This 

 project was continued as in previous years beginning in 1927. The sod was 



