236 



KX'.'ERIMENT STATION KECORD. 



Cultivation of tobacco, J. M. Priego {El cult ho del (ahacn. M'ulrld: .][. (1. Ilcr- 

 nandez, 1SV9, jtji. l.U), jil. J. Bibliotcca del agricidtnr, r. 1). 



Tobacco, its culture and biology, C. J. Koning (Lcip.sic: Wilhehn EiKjelinann, 

 1900, pp. So, figs. J.5). 



Growing tobacco under cover {Tradesman, 43 {1900), No. 11, p. 59). — Some 

 iigures on the growing of tobacco under slat arbors and ai'ljors covered with cheese 

 cloth in Florida are given and methods of overhead irrigation of the tobacco l^y 

 revolving sprinklers notod. 



Tobacco : Methods of culture and manufacture, ]\I. ^I. Garcia ( Tuhuco: nocio- 

 nes de ridtiio // 1 hdioracioii. Vulencia: Imp. de El rorrco dc ]'(tU'iiciu, 1899, pp. 44, />!■ 1 )• 



Observations on the growth and products of wheat plants of known 

 selected pedigree, H. L. Bolley {North Dakota Sta. RpA. 1899, pp. 19, 20). — This 

 is an account of the comparative yields for 2 seasons of large grains of seed wheat 

 selected from plants grown from large grains and of small grains selected from jjlants 

 grown from small grains. The yields obtained from the large seed have been the 

 better. The experiment is being continued. 



HORTICULTURE. 



The fertilizer requirements of asparagus, J. Honig and E. 



Haselhoff {BriiunsrJnreig Landir. Ztg., OS {1900), Nos. 23, pj^. 102, 

 103; 21^, p. 106). — In addition to the authors' experinient.s here reported, 

 the works of Paschen, Lierke, and Colomb on the culture and anaU'sis 

 of asparagus are drawn upon. The average weight and composition 

 of asparagus on a hectare are shown to be as follows: 



Yield and composition of asparagus. 



Fresh 

 weight. 



Dry matter. 



Nitrogen.l^'hp^P^'O^ 



ic acid. 



Potash. 



Asparagus stalks 



Asparagus berries 



Whole plant, without berries. 



Totiil 



Kg. 

 4,000 

 600 

 9,000 



Per cent. 



0.25 



29.00 



23. 00 



Kg. 

 250 

 175 



3,000 



Kg. 

 12,875 

 6,000 

 47, 100 



Kg. 

 4,375 

 1,580 

 10, 770 



Kg. 

 10,625 

 4,935 

 63,900 



65,975 I 16,725 



79, 460 



The fertilizing requirements of a crop of asparagus is thus seen to 

 he about 58.9 lbs. of nitrogen, 15.2 lbs. of phosphoric acid, and 71.77 

 lbs. of potash per acre. These figures increased or decreased by about 

 one-third give the maximum and minimum limits, respectively, of 

 these elements required by a crop in different seasons. About 18.000 

 lbs. of cattle manure would supply asparagus with all the essential 

 elements required for a crop grown on one acre. A number of fer- 

 tilizer fonuulas containing commercial fertilizer and furnishing nitro- 

 gen, phosphoric acid, and potash in about the right proportions for 

 as])aiagus are given. 



The South Haven report for 1899, L. li. Taft and S. H. Fulton 

 {Michigan Sta. Bui. 177, pp. 17-56). — This is a report on tests of 

 varieties of fruits similar in character to those previously reported 

 (E. S. R., 10, p. 40). Some work in spra3ing, pruning, and fertilizing 

 is briefly noted, and tabular matter given which shows the blooming 



