19161 HORTICULTURE. 35 



Varieties of soy beans, F. A. Welton (Mo. Bui. Ohio Sta., 1 {1916), No. J/, 

 pp. 99-101). — Notes are given on the culture of soy beans and the results of a 

 4-j'ear test of 25 varieties are tabulated. 



Of 6 early varieties or those ripening on or before September 27, Chestnut and 

 Ito San 1726S had an average yield exceeding 27 bu, per acre. The best yield- 

 ing varieties in the list with an average yield above 28 bu. per acre were Ohio 

 7480, Ohio 9016, and Ohio 9110, varieties maturing from September 28 to 

 October 6. Of the late varieties or those maturing on or after October 7, Ohio 

 7491 and Ohio 9035 ranked highest with 26.28 and 25.58 bu. per acre, respec- 

 tively. For the production of hay. Cloud, Ohio 9035, Sable, Taha, Auburn, 

 Ebony, Medium Green, and Shingto, and for silage, varieties of the type of 

 the Medium Green gave promising results. Plans for cooperative work in test- 

 ing promising strains isolated by the station are briefly outlined. 



Variety tests with sugar beets (Ztschr. ZuckeriTUlus. BiJhmen, 40 (1916), 

 No. 4, pp. 155-170). — These tests were conducted in triplicate at each of four 

 different points by the sugar industry association of Bohemia, and the samples 

 studied were made up of 50 beets from each plat. 



The average yields of varieties grown in 1915 were as follows : Dippe 33,995, 

 Zapotil 33,549, Schreiber 33,665, Dobrovic 33,585, Rabbethge and Giesecke 

 33,290, Kuhn 36,048, Mandelik 33,133, and Dobrovic " average," which differed 

 from Dobrovic only in the seed sample, which was made up by the growers 

 from seed grown in their several fields, 33,754 lbs. per acre. The corresponding 

 sugar contents were 19.53, 19.54, 19.31, 20.02, 19.51, 19.37, 19.58, and 19.94 

 per cent. 



A comparative study of the weeds of central Iowa, northern Minnesota, 

 and Wisconsin, L. H. Pammel (Proc. Iowa Acad. Sci., 22 (1915), pp. 57-59). — 

 A table is given showing the occurrence or nonocurrence of a list of weeds at 

 Ames, Iowa; St. Paul, Brainerd, Cass Lake, and Duluth, Minn.; or St. Croix 

 Falls, Wis. 



[Eradication of quack grass] (North Dakota Sta. Rpt. 1915, pt. 1, p. 16).—' 

 Flake potasli was applied in different amounts up to 16,000 lbs. per acre in 

 direct contact with the grass. The heaviest application seemed strong enough 

 to kill the quack grass on the surface of the ground, but it did not prevent the 

 final growth of the grass from the lower root stalks. 



HORTICULTURE. 



[Report of horticultural investigations] (Oeorgia Sta. Rpt. 1915, pp. 9-12). — 

 A brief statement of progress made in various horticultural projects, under 

 the direction of H. P. Stuckey, during the year. 



In breeding work with tomatoes it M'as found that first and second genera- 

 tion plants from the crosses between the red cherry tomato and Greater Bal- 

 timore, a large commercial variety, gave fruit resistant to the blossom-end rot 

 and in size intermediate between the fruit of the two parents. Plants result- 

 ing from seed taken from diseased tomatoes of the Globe variety produced 

 fruit more susceptible to blossom-end rot than did plants grown from seed 

 taken from sound fruit. 



A selection from the third generation progeny of a cross between the 

 Georgia collard and the Charlestown Wakefield cabbage has given a stocky, 

 compact plant, intermediate between the parent types and apparently resistant 

 to disease. 



In the spring of 1912 one acre was set to apple trees, every other row 

 being stock infected with crown gall and every other row being set to sound 

 Btock. Measurements at the end of the season 1915 show that the sound stock 



