ß7] Düngung. Obstbau. 493 



Düngung. 



876. Brooks, W. P. Manuring an apple orchard. (Massachusetts 

 Sta. Ept., 1909, II, p. 10.) 



Exp. Stat. Rec, 1911, XXIV, p. 241. 



877. Brooks, W. P. Fertilizer experiments at the cranberry sub- 

 station. (Massachusetts Sta. Rpt., 1909, I, p. 31.) 



Exp. Stat. Rec, 1911, XXIV, p. 239. 



878. Close, C. P. et al. Fertilizers on asparagus. (Maryland Sta. 

 Bull., 151, p. 135.) 



Exp. Stat. Rec, 1911, XXV, p. 38. 



879. Dettweiler, D. Topf düngungs versuche der Stadtgärtn erei 

 München. (D. Ernähr, d. Pflanze, Mitt. d. Kalisyndik., 1911, VII, No. 4, p. 29.) 



880. Dyer, B. and Shrivell, F. W. E. The manuring of market- 

 garden crops. London 1910, new. ed. rev., 141 pp. 



Exp. Stat. Rec, 1911, XXIV, p. 640. 



881. Hai'COurt, R. The manurial constituents taken from the 

 soil by an average crop of cauliflower. (Ann. Rpt. Ontario Agr. Col. 

 and Expt. Farm, 1910, XXXVI, p. 102-103.) 



Exp. Stat. Rec, 1911, XXV, p. 537. 



882. Hedrick, U. P. Is it necessary to fertilize an apple orchard? 

 (New York State Sta. Bull., 839, p. 153.) 



Exp. Stat. Rec, 1911, XXV, p. 642. 



883. Heine, C. Die herbstliche Düngung der Obstbäume. (Garten- 

 welt, 1911, No. 32.) 



Ref. i. D. Ernähr, d. Pflanze, Mitt. d. Kalisyndik., 1911, VII, No. 17, p. 191. 



884. Kee, Mac. Orchard green-manure crops in California. (U. 

 S. Dept. Agr., Bur. Plant Indus. Bull. 190, 40 pp.) 



Exp. Stat. Rec, 1911, XXIV, p. 239. 



Die besten Erfolge ergaben Wicken und Feldbohnen. 



885. Ledien, F. Über das Düngen der Orchideen. (Gartenflora, 

 LX, 1911, Beilage Orchis, V, No. 3, p. 41-46.) 



886. Lierke, E. Einfluss der Düngung auf die Menge und Güte 

 des Obstertrages. (D. Ernähr, d. Pflanze, Mitt. d. Kalisyndik.. 1911, VII, 

 No. 12, p. 132.) 



887. Löbner, M. Über einen Düngungsversuch mit Erica gracilis. 

 (Sitzungsber. u. Abh. kgl. Sachs. Ges. Bot. u. Gartenbau Dresden, XV, 1911, 

 p. 80—88, mit 5 Tafeln.) 



Obstbau. 



888. Mc Adie, A. G. Experiments in frost protection. (Mo.Weather 

 Rev., 1910, XXXVIII, No. 12, p. 1894—1895) 



Exp. Stat. Rec, 1911, XXV, p. 37. 



889. Babcock, E. B. Walnut-oak hybrid experiments. (Amer. 

 Breeders Mag., 1910, I, No. 3, p. 200.) 



E.Kp. Stat. Rec, 1911, XXIV, p. 243. 



890. Ballou, F. H. Apple culture in Ohio. (Ohio Sta. Bull., 217, 

 p. 527.) 



Exp. Stat. Rec, 1911, XXIV, p. 544. 



