March, 1934] Agricultural Research in N. H. 13 



As in previous years, fruit stored at 30 degrees failed to develop 

 a satisfactory flavor until the second week after removal from storage 

 on March 8. Then it surpassed in this respect fmit previously re- 

 moved from 32-degree storage. 



Two lots of Cortland apples, one picked and stored on September 

 30 and the other three weeks later, rated higher in flavor after Janu- 

 ary 1 than Mcintosh. The latter softened in storage much faster than 

 the Cortland, especially during the first two months. 



One lot of Mcintosh apples affected by corky-core as a result of the 

 severe drought of 1932, was held until the end of storage. They re- 

 mained firmer than normal fiTiits throughout the season and retained 

 the same color as at harvest. Corky-core neither increased nor de- 

 creased throughout the season. 



No commercial advantage was demonstrated in storing Baldwins at 

 30 degrees as compared with 32 degrees. Common-storage fmit devel- 

 oped a much better flavor earlier in the season, but its breakdown was 

 much more rapid as the season progressed. 



The keeping qualities of Baldwins from trees under sod culture did 

 not vaiy significantly whether the fertilizer was complete or nitrogen 

 only. Fruit from a cultivated nitrogen plot proved about the same 

 in keeping quality. {Purnell Fund) 



Removal of Spray Residues 



Washing apples to remove an excess of lead and substituting calcium 

 for the lead in the late cover sprays were features of the spray-resi- 

 due investigation by G. P. Percival and G. F. Potter, prompted by new 

 federal regulations. 



The combination of a wettable sulphur with calcium arsenate and 

 additional hydrated lime produced no appreciable damage to the fmit 

 or foliage. Two applications of this mixture in July showed no great- 

 er residue than the tolerance on Mcintosh or later varieties. Plots 

 sprayed twice in July with lead arsenate exceeded the tolerance both 

 for lead and arsenate. 



Running the fruit through a machine with brushes and with two 

 sets of polishing cloths did not reduce the residue sufficiently. How- 

 ever, when mn through a paddle-type washer containing hydrochloric 

 acid two parts by volume to 100 parts of water at 70 degrees F., both 

 lead and arsenic were removed to a small fraction of the tolerance. 

 {Purnell Fund) 



Complete Fertilizer Increases Blueberry Yield 



In 1932 an area of low-bush blueberries, most of which had been 

 burned over in the spring, had vaiying quantities of a complete ferti- 

 lizer applied to nine series of four plots .01 acres each in size, with the 

 following results: The check plot yielded 241 quarts; that with 500 

 pounds of fertilizer 311 quarts; and that with 1,000 pounds of ferti- 

 lizer 344 quarts; and that with 1,500 pounds of fertilizer 383 quarts. 

 This investigation was supervised by L. P. Latimer. {Hatch Fund) 



