FIELD CROPS. 33 



combinations and amounts. Tables show the results obtained on each of the 

 fields and as a whole, and indicate the percentages of the total potash of the 

 soil which each of 14 field crops was able to abstract from a sandy loam. 



Report of field trials on the liming of meadow land, 1906—1909, T. Mil- 

 burn and R. C. Gaut {County Council Lancaster, Ed. Com., Agr. Dept., Farmers^ 

 Bui. 11, 1910, pp. 18). — This publication summarizes results of earlier work 

 (E. S. R., 19, p. 829) and reports subsequent studies. 



The fourth crop since the first application of lime in 1906 indicates that cob 

 lime, ground lime, and gi'ound limestone have continued effective in increasing 

 the crop yield. " Ground limestone has consistently given the largest crop . . . 

 for the 4 seasons," as indicated by the average yields of each year. Applica- 

 tions of the 3 forms of lime were followed by 10, 16*. and 25^ cwt. per acre 

 respectively more hay than was secured on the unlimed plat during the 4 sea- 

 sons. The profit per acre was more than twice as great in case of ground lime- 

 stone as in case of ground lime, which in turn gave twice the profit secured 

 from cob lime. Botanical analyses of the herbage of the ground limestone plats 

 at the fourth cutting in 1909 showed a higher percentage of Yorkshire Fog 

 {HolcuH Uuititux) on 2 farms, and a higher i)ercentage of leguminous plants on 

 all 3 farms. 



Trials with different grass mixtures in 3-year meadows, 1883—1903, 

 P. Nielsen and E. Lindhard (Tidsskr. Landhr. Planteavl, 11 (1910), No. 3, 

 pp. 367-.'iOO). — Trials were conducted at 4 stations to determine the influence 

 of the different species of clovers and grasses in 36 different mixtures on the 

 hay yield. 



The results indicate that the selection of legume species is the most impor- 

 tant factor in the composition of grass mixtures for 1 to 3 year meadows. If 

 the legume does well, a good hay crop will be obtained; if not, the yield will be 

 small. Under favorable conditions, a good clover and kidney vetch in mixtures 

 will easily equal pure grass mixtures. 



Yields of grasses of different species, 1879—1907, P. Nielsen and E. 

 Lindhard (TidssJcr. Landhr. Plnntcarl, 11 (1910), No. 2, pp. 181-231).— The in- 

 vestigation, which was commenced by the late P. Nielsen in 1879, covers trials 

 with the following grasses: Dactylis glo^nerata, Loliiim pcrenne, L. italicum, 

 timothy, Avena elatior, Festuca pratensis, F. duriuscula, Alapecurus pratensis, 

 Holcus lanatus, Poa pratensis, and florin grass (Agrostis sp.). The trials were 

 conducted at 5 different experiment stations for a number of years, the seed 

 used being obtained from domestic growers, from other European countries, 

 and from America and Australia. 



Seeding lawns and permanent pastures (Ohio Sta. Circ. 106, pp. 2). — This 

 circular suggests methods and grass-seed mixtures for use in seeding lawns and 

 permanent pastures. 



Tests of Chile saltpeter under small grains, B. Jancso (Kis4rlet. Kozleni., 

 13 (1910), No. 6, pp. 112-133).— These pages report the results of applications 

 of from 60 to 80 kg. of saltpeter per joch (from 93 to 124 lbs. per acre) to sum- 

 mer crops shortly before sowing and to winter wheat and rye the spring after 

 sowing. 



Good results were obtained with the top dressing, except in dry springs, and 

 especially good results were obtained with the winter crop which had been 

 fertilized with phosphorus and potash. Phosphoric acid in the fall followed by 

 phosphoric acid and saltpeter in the spring showed a slightly higher yield. 



Some data on work with buckwheat, L. Althausen (Zhur. Opytn. Agron. 

 (Russ. Jour. Expt. Landw.), 11 (1910), No. 6, pp. 801-824) .—The author re- 

 ports the results of work begun in 1908 with red and white flowering strains 



