Aluminum Foil Wrappers Can Be 

 Used to Reduce Sun Scald of Tree 

 Trunks. During the clear winter 

 days of bright sunlight and no wind 

 (February 20 and 24, 1949) air 

 temperatures were 45° and 38° F. 

 respectively. Temperatures in the 

 cambiums on the south side of un- 

 covered tree trunks rose to 72° and 

 67° F., while those in the cambiums 

 of tree trunks which were wrapped 

 with alumni foil were only 42° and 

 37° F. at the same time. This indi- 

 cates that alumninum foil, a ma- 

 terial which is easy to apply and to 

 remove, may be an exceptionally 

 good material to use in preventing 

 winter sunscald of tree trunks. 

 Russell Eggert 



Neiv Varieties of Apples Look 

 Promising. Among the new apple 

 varieties on trial at the University 

 of New Hampshire Horticultural 

 Farm, the following appear to war- 

 rant further trial, and have replaced 

 the remaining Baldwin trees in the 

 experimental orchards. 



Fireside — harvested September 

 26. A Minnesota variety; 

 light red striped in color; 

 medium good in quality; 

 stores well. 

 Franklin — • harvested October 14. 

 Not a large apple; solid red 

 in color; smooth skin; good 

 good quality; stores well. 

 Two other varieties which show 

 promise are Sharon and Carlton. 



Those varieties still on trial, but 

 which have not as yet been satis- 

 factory under conditions at the 

 Horticultural Farm are: Minjon, 

 Haralson, Joan, Joyce, Newtosh, 

 Keetosh, Victory, Webster, and 

 Wedge. 



Russell Eggert 



A Cultivating Attachment Adapted 

 to Many Jobs on Small Farms. A 

 cultivating attachment which was de- 

 veloped at the University of New 



26 



Hampshire Horticultural Farm has 

 been found extremely useful in culti- 

 vating wide-row crops, squash, and 

 raspberries, and is especially adapted 

 to prepare small areas for planting. 

 Its particular advantages are the 

 sufficient spread of the shovels to re- 

 duce clogging with trash; its ability 

 to cultivate out all tracks left by a 

 tractor; the facts that it can be set 

 any desired depth, and that the 

 shovels on spring teeth eliminate 

 breakage on stony ground. 



Russell Eggert 



Sprayer Duster Experiments. A 

 comparison of the sprayer-duster, a 

 machine which applies a wet dust, 

 and the regular high-pressure spray 

 machine for scab control showed 

 that where enough material was 

 used to obtain good coverage, the 

 control was similar (less than 1 per 

 cent scabby fruit), with both ma- 

 chines when using the finer particle 

 size dusts. Where a 325 mesh sul- 

 fur was used, 24 per cent of the 

 fruit showed scab. 



The importance of thorough cover- 

 age in scab control was well illus- 

 trated by taking records of scab in- 

 jury on different sides of the trees. 

 Where the 325 mesh sulfur was used, 

 76 per cent of the fruit nearest the 

 duster was free from scab while that 

 part of the tree farthest from the 

 duster while driving by produced 

 fruit only 24 per cent clean. Where 

 the finer particle size dust was used, 

 none of the fruit showed scab on the 

 part of the tree nearest to the duster 

 while only 76 per cent was free from 

 scab on the part of the tree farthest 

 from the duster. 



A sticker in the water used to wet 

 the dust did not improve the scab 

 control. 



A concentrate of naphthalene 

 acetic acid in oil was applied as a 

 mist, using the sprayer part of the 

 sprayer-duster to delay the drop of 

 Mcintosh. One pint, one quart, and 



