1919] HOKTICULTURE. 147 



Other conditions being favorable, moderate pruning of winter-injured peach 

 ti'ees gave better results as to form, gi-owth, and fruit buds than severe pruning. 

 Experiments on pear blight showed that infection may be carried by other agen- 

 cies than insects. 



Among the results secured in olericulture, tomato strains have been devel- 

 oped which have proved highly wilt-resistant as compared with commercial 

 strains when grown on badly infected soil. A disease organism causing the rot- 

 ting of onion sets in storage has been isolated and described. Expei'iments 

 with gi-eenhouse lettuce and tomatoes have shown that rich garden loam is not 

 inferior to rotted sod as a basic soil for these crops, that large amounts of ma- 

 nure in the soil mixture greatly Increase the yield, but that large amounts of 

 sand decrease the yield, since the extra sand displaces a certain amount of 

 fertilizer. 



[Report on horticultural investigations in New Mexico] {New Mexico Sta. 

 Rpt. 1918, pp. 35-41, JfJt, fig- !)• — Brief statements of progress made in cultural 

 and varietal tests of orchard and small fruits, nuts, and vegetables. 



[Beport on horticultural investigations in North Dakota] (North Dakota 

 Sta. Rpt. 1917, pp. IJf, 15). — A brief statement of progress. 



The station's work in tomato selection has progressed sufficiently to establish 

 definitely the fact that early enough strains are available to make the produc- 

 tion of tomatoes practical in that climate. The most promising varieties of 

 celery, sweet corn, cauliflower, and strawberries under test are listed. Pedi- 

 greed strawberries have proved to be in most instances the poorest strains 

 grown. 



Experiments on the supposed deterioration of varieties of vegetables in 

 Porto Rico, with suggestions for seed preservation, C. F, Kinman and T. B. 

 McClelland {Porto Rico Sta. Bui. 20 {1919), Spanish Ed., pp. 32, figs. 11).— An 

 English edition of this bulletin has been previously noted (E. S. R., 36, p. 340). 



Simple methods of celery culture, W. J. Green (Mo. Bui. Ohio Sta., 4 (^919), 

 No. 4. pp. 129-134, figs. 4)- — Methods of fertilizing, growing, blanching, and har- 

 vesting best suited to the home garden are described. 



Muskmelcn culture in Michigan, C. W. Waid {Michigan Sta. Spec. Bui. 95 

 {1919), pp. 13, figs. 10). — Popular instructions are given for growing, harvest- 

 ing, and marketing muskmelons, including a descriptive list of varieties. 



Grafting and budding fruit trees, W. J. Green {Mo. Bui. Ohio Sta., 4 

 {1919), No. 4, PP- 101-105, figs. 5). — Methods of top-working and bridge-grafting 

 fruit trees are described. 



The pruning of winter-injured peach trees, A. J. Gundeeson {Illinois Sta. 

 Bui. 218 {1919), pp. 383-394, figs. 13). — The station conducted experiments in 

 1918 to determine the best pruning treatment for peach trees seriously injured 

 during the winter of 1917-18. The results, which are here presented in detail, 

 have been summarized in a previous paper by the author (E. S. R., 40, p. 835). 



The fi^nancial history of a 12-year-old peach orchard, H. J. Eustace and 

 F. M. Bakden {Michigan Sta. Spec. Bui. 94 {1919), pp. 15, fig. 1). — In continua- 

 tion of a previous report (E. S. R., 30, p. 443), the annual records are given 

 of a 15-acre peach orchard located near South Haven, IMich. 



The net profit from the orchard for the whole 12-year period was $11,263.05, 

 or a net profit of $938.58 per year, $62.57 per acre per year, and 66 cts. per 

 bushel. The orchard yielded a revenue from the interplanted corn crop the first 

 year, but was managed at a loss the three following years, after which it yielded 

 a profit every year. 



Description of hybrid plums and other new fruits, C. Haralson {Minn. 

 Hort., 47 {1919), No. 4, P- 152). — Several plums, a seedling blackberry, and an 



