June 1941] Agricultural Research in New Hampshire 37 



obtained with early varieties, but effects on late varieties are not 

 definite. 



(Purnell Fund) 

 Medicinal Herbs (J. R. Hepler) 



The following herbs were planted in commercial quantities, 

 largely to find out whether they could be grown and the methods of 

 culture necessary to produce a good crop: digitalis, catnip, sage, sum- 

 mer savory, winter savory, pyrethrum, wormwood, peppermint, spear- 

 mint, horehound, sweet basil, and wormseed. All of these grew well. 

 The digitalis, when transplanted in June, showed considerable varia- 

 tion in size and type of plant. Of the 5,000 plants set out, about 35 

 of the best were selected and taken into the greenhouse for further 

 study. 



(Bankhead-J ones Offset Fund) 



Apple Storage ( W. W. Smith) 



Apples from the early ripening Milton variety and the later rip- 

 ening Macoun variety were stored at 32°F. and 40° F. At the low 

 temperature, the Macoun lost its characteristic flavor by Thanksgiv- 

 ing, although the fruit remained crisp until the following March. At 

 the higher temperature, it kept its flavor and remained crisp into 

 January. The Milton variety did not keep as long, showing break- 

 down in early January. However, the quality of both varieties was 

 better when stored at the higher temperature. 



Studies of the brown core disorders of Mcintosh apples indicate 

 that this diseased condition can be curtailed by cutting down the ap- 

 plication of nitrogen fertilizer, picking the fruit when it is more 

 mature, and storing at higher temperatures. 



(Purnell Fund) 

 Winter Injury (W. W. Smith) 



Experiments were started to study the effects of three nitrogen 

 carriers on the acidity of the soil, concentration of nitrogen, and the 

 carbohydrates in the phloem and xylem tissue of the tree trunk. A 

 comparison of temperature changes ^at different levels from the out- 

 side of the trunk toward the center on the north and south sides of 

 the trees is also being conducted. It is hoped that this data will give 

 information concerning the prevalence of frost rings and other forms 

 of winter injury on the north sides of trees. The tests are repeated 

 on irrigated land to make a comparison between the high and low 

 moisture soil. 



(Adams Fund) 



Rootstock Project (W. W. Smith) 



A trial planting of 300 trees was set at Gilford in the spring of 

 1940, using four rootstocks ; namely, Mailing No. 4, French Crab, Vir- 

 ginia Crab, and Florence Crab. Mcintosh, Cortland, and Northern 

 Spy are to be top-worked on the Virginia and Florence Crab. The 

 same varieties are budded with the French Crab and Mailing No. 4 

 before setting. The experiment has been designed to test statistically 



