No. 3, April, 1921] AGRONOMY 233" 



1571. Robinson, W. L. The use of forage crops in the fattening of pigs. Ohio Agric. Exp. 

 Sta. Bull. 342. 169-222. 1920. — Reports on experiments conducted for the purpose of secur- 

 ing more information regarding the influence of the various kinds of forage, of the methods of 

 feeding, and of the character and amount of the concentrates on the economy of production. 

 Comparisons were made of full and limited rations of concentrates with and without a nitro- 

 genous supplement, of self and hand feeding, and of different forage crops and forage crop 

 combinations. The work is presented with the view of enabling the farmer to determine 

 with some degree of accuracy the methods which under given conditions will bring returns 

 approaching the maximum from both the pigs and the land used in growing the forage. — 

 R. C. Thomas. 



1572. RowNEY, L. F. Trials of grasses and fodder plants. Glen Innes ejtperiment farm. 

 Agric. Gaz. New South Wales 31: 799-803. 1920. — The following grasses were under trial: 

 Andropogon intermedius (native), A. affinis (native), Bromus japonicus, Festuca arundinacea, 

 Schedonorus Hookeriamis (native), Danthonia semiannularis (native), Dactylis glomerata, 

 Phalaris bulbosa, Lolium perenne, Derjeuxia coarctata, Avena elatior [Arrhenatherum elatiiis], 

 and Phleum pratense. Best results seemed to be obtained from Bromus, Phalaris, Lolium, 

 and Avena. — Among several alfalfas (lucernes), "Montana" seemed to give best results. 

 Alfalfa seed does not set at this station. — Satisfactory results were secured from Melilotus 

 alba, Trifolium pratense perenne and Poterium sanguisorba. — L. R. Waldron. 



1573. RuMKER, K. v., XJND R. Leidner. Die Sortenanbauversuche im Jahre 1918. [Va- 

 riety tests in 1918.] Landw. Jahrb. 35: 327-340. 1919. — A report on variety tests with oats, 

 barley, wheat, soy beans, bush beans, and millet. — A. J. Pieters. 



1574. Saillard, Emile. La betterave a sucre pendant la guerre. [Sugar beets during the 

 war.] Compt. Rend. Acad. Sci. Paris 170: 1460-1461. 1920.— A study of analyses of sugar 

 beets as affected by meteorological and other conditions in France during 20 years. The 

 amount of sugar per acre, as shown by analyses during October of each year, increased until in 

 1919 it reached 17.57 per cent. The difference is held to be due to the scarcity of fertilizers, 

 especially nitrogenous, during the war. — C. H. Farr. 



1575. Schmidt, H. Anforderungen der Landwirtschaft an die Botanik. [Demands of 

 agriculture on botany.] Jahresber. Ver. Angew. Bot. 16: 31-37. 1918. 



1576. ScHNEiDEwiND, W. Parzellengroszen-Versuche. Untersuchungen iiber die Brauch- 

 barkeit verschieden grosser und verschieden angelegter Parzellen bei Diingungsversuchen und 

 die Wahrscheinlichkeitsrechnung. [Plot experiments. Investigations concerning the useful- 

 ness of plots of varying size and laid out in various ways in fertilizer experiments and the calcu- 

 lation of probabilities.] Arbeit. Deutsch. Landw. Ges. 296. 6-51. 1919.— The author 

 reports the results of five years' work, undertaken to determine the relative accuracy of 

 results with plots varying in size from 9 and 100 square meters to 200 square meters. Of the 9 

 square meter plots there were two series, one with uncultivated strips 80 cm. wide surrounding 

 each plot, the other with plots adjoining one another. The fertilizers used were sodium 

 nitrate and calcium-ammonium nitrate. The author concludes: (1) Plots with uncultivated 

 intervening spaces are unreliable, the jaelds being too high and the effect of the fertilizers 

 too little noticeable. (2) The plots when adjoining, irrespective of size, gave corresponding 

 yields. (3) When the fertilizer is so distributed as to be placed within the outer three drill 

 rows, its effect is not apparent in the adjoining plot. (4) The differences between minimum 

 and maximum yields was greatest in the 9 square meter plots, due largely, however, to the 

 fact that the number of small plots was larger than that of the large plots. (5) The proba- 

 bility calculations showed that where considerable yield differences occurred these were a 

 true measure of the effect of the fertilizer. Where small increases are secured the results are 

 uncertain. — A. J. Pieters. 



