HORTICULTURE. 237 



uniformity of composition within each of the several varieties of apples ana- 

 lyzed. The nonirrigated varieties contain slishtly greater percentages of acid 

 and sugar, but the differences practically disappear when these constituents 

 are calculated to the dry or solid matter. Apples grown with irrigation con- 

 tain the smaller percentage of solids insoluble in water, and the nonirrigated 

 apples containing appreciably higher percentages of crude protein, and conse- 

 quently may have a slightly higher actual food value. In intensity and uni- 

 formity of color, also in percentage of waste, irrigated apples are somewhat 

 superior to the nonirrigated. 



With the exception of strawberries there were but slight differences in per- 

 centage of solid matter and in the total sugar content l^etween the irrigated 

 and nonirrigated small fruits. The nonirrigated small fruits, however, con- 

 tain appreciably greater percentages of acid and of crude protein. 



From a survey of the analytical results as a whole the authors are led to 

 conclude that fruits in general manifest a well-defined tendency to elaborate 

 greater percentages of total solids or dry matter, consequently of sugar, acid, 

 and crude protein when grown in nonirrigated sections, but that with compara- 

 tively few exceptions no marked difference between irrigated and nonirrigated 

 fruits in actual food or market value should be charged to differences in com- 

 position. 



[Orchard and small fruits], E. G. Schollandee {North Dalcota Sta., Rpt. 

 WiUiston Suhsta., 1911, pp. 10, 11, figs. 2).—K brief statement> of the fruits 

 that have been grown on the station grounds to date, including the varieties 

 that have proved the hardiest and have given the best satisfaction. 



Apples and peaches in the Ozark region, H. P. Gould and W. F. Fletcher 

 {U. 8. Dcpt. Agr., Bur. Plant Indus. Bui. 275, pp. 95, pis. 6, figs. 6). — In con- 

 tinuation of previous fruit district investigations (E. S R., 24, p. 441) this 

 bulletin reports a study of the Ozark region with reference to the behavior of 

 different fruit varieties, especially the apple and peach, in different parts of 

 the region, the conditions under which they attain satisfactory development, 

 and the adaptability of each variety for the purpose intended. 



The Ozark region is described with reference to location and topography, 

 soil, climate, transportation facilities, and present pomological status. The 

 principal varieties of apples and peaches grown in the Ozark region are de- 

 scribed, and lists are given of varieties for Arkansas and for southern Missouri. 

 Phenological records compiled from data secured from a large number of 

 cooperative observers are given for the more important varieties of apples 

 and peaches. 



[Citrus experimeaits], S. E. Collison (.Florida Sta. Rpt. 1912, pp. XXXVIII- 

 XLIII, fig. 1). — In continuation of previous reports (B. S. R., 27, p. 344) 

 measurements are given showing the average gain in diameter of trees from 

 June 7, 1909, to May 6. 1912, growing on various fertilizer plats in the citrus 

 experimental grove. Rainfall and temperature records for the year are also 

 given. 



No striking differences in results have been secured from any particular 

 fertilizer thus far. The clean culture plats are still above the average in 

 appearance. The check plats made slightly less growth than in the previous 

 year. Excessive amounts of fertilizer have failed to stimulate tree growth. 

 It was found that the die-back disease is more prevalent in certain well- 

 defined areas in the grove but there appears to be no relationship between 

 these areas and the character of fertilization. An investigation of the soils of 

 the different areas is in progress to determine whether any relationship exists 

 between the composition of the soil and presence or absence of die-back. Some 

 attention was also paid during the year to a study of the effect of fertilization 



