1917] HORTICULTURE. 39 



nients at Wooster comparing the effects of liming upon the yields of wheat 

 on fertilized and unfertilized and manured plats. It Is concluded that liming 

 is of fundamental importance on this soil, and that neither manure nor other 

 combinations of fertilizers will produce a full yield without lime. 



Seed analyses made during' 1912—1915, Mary H. Jagger and E. M. Stoddard 

 (Connecticut State Stn. Rpt. 1015, i>t. 6, pp. 497-513). — The work for the period 

 is described and notes on the samples of clover, alfalfa, and grass seeds exam- 

 ined are given. The results of analyses of red clover seed samples secured 

 in 1913, and including the number of noxious weed seeds and other foreign 

 seeds other than weeds per pound, are tabulated, and germination and vitality 

 tests with different kinds of seeds, including vegetable and tree seeds, are 

 described. 



Reported data on the vitality and sprouting capacity of onion seed show 

 that the varying number of samples of Connecticut grown seed tested from 

 year to year, from 1894 to 1912, inclusive, and less than one year old, contained 

 on an average 75.5 per cent of seeds capable of sprouting. A comparison of 

 onion seed samples less than one year old witli samples more than one and 

 less than four years old, showed a loss of vitality with tlie increasing age of 

 the seed. Nineteen samples of Connecticut-grown onion seed separated into 

 heavy and light seeds showed an increase in germination ranging from 2.5 to 

 36 per cent in favor of the heavy seed. 



HORTICULTURE. 



Report from the division of horticulture for the year ended March 31, 

 1915, W. T. Macoun et al. {Canada Expt. Farms lipts. 1915, pp. 581-611, 619- 

 673, 674-692, 69^-702, 70^-786, 71,1-71,6, 71,7-750, 751-759, 762-773, 774-786, 788- 

 795, 797-SOO, 803-813, 815-841, 842-846, 848-854, 855-863, pis. 12).— A detailed 

 report on results secured in 1914 in the breeding, cultural, and variety experi- 

 ments with fruits, vegetables, forest and ornamental trees, and herbaceous plants, 

 conducted at the Central Farm, Ottawa, and at the various branch experimental 

 farms and stations in Canada. A summary of the more important results has 

 appeared pi'eviously in bulletin form (E. S. R., 33, p. 236). Analyses of sev- 

 eral commercial brands of arsenate of lead are also included. 



[State insecticide and fungicide laws] (U. S. Dept. Agr., Insecticide and 

 Fungicide Rd. Serv. and Rcguhttorij Announcement 13 (1916), pp. 101-152). — 

 This comprises a compilation of state laws dealing with the manufacture and 

 sale of insecticides and fungicides as amended to date. The subject matter is 

 based upon publications and other information relating to such laws furnished 

 to the Federal Insecticide and Fungicide Board by state officials. 



The relation of fruit growing to soil fertility, R. C. Thompson (Arkansas 

 Sta. Bui. 123 (1916), pp. 5-8).— In the spring of 1906 young peach and apple 

 orchards were set out at the station, and data were collected annually for a 

 period of nine years on the amount of plant food taken from the soil by in- 

 dividual trees of the orchards. A total of 90 apple trees and 36 peach trees 

 were analyzed during the experiment. The following table shows the total 

 amount of plant food taken up by peach and apple trees for the production of 

 wood and leaves, as well as an estimate of the amount of plant food that was 

 returned to the soil by the dead leaves and other means during the nine years of 

 the experiment. The data are calculated on a basis of 100 peach trees and 40 

 apple trees per acre. 



72628°— 17 4 



