234 



Kepokt on Chop Pruduciion of the 



Table XX. — Influence of Manures on the Relation of the Roots and 

 Tops of Sugar Beets, 1900, 1901. 



Treatment. 



Commercial fertilizer 

 plats: 



Plat 1 (2, 1901) 



Plat 2 (5, 1901) 



Plat 3 



Plat 4 



Plat 5 



Plat 6 



Average 



Stable manure plats: 



Plat 7 (1, 1901) 



Plat 8 (4, 1901) 



Plat 9 



Plat 10 



Plat 11 



Plat 12 



Average 



No fertilizer (3, 1901) . . . 

 Single beet, commercial 



fertilizers 



Single beet, stable 



manure 



Experiment 1900. 



Experiment 1901. 



Weight Weight Per ct. 

 No. of beets beets weight 

 beets wiih without of 

 ■w'hed. tops, tops, 



Ounces. Ounces. 



roofs. 

 Per ct. 



Weight Weight 

 No. of beets of beets 

 beets with without 

 weighed, tops. tops. 



Ounces. Ou7ices. 



40 

 20 

 20 

 20 

 20 

 20 



40 

 40 

 40 

 20 

 20 

 20 



761 

 409 

 3G9 

 307 

 3ol 

 3G5 



837 

 778 

 763 

 354 

 318 

 435 



572 

 309 



284 

 267 

 272 

 2Q1 



263 

 253 

 322 



75.1 

 5 

 9 



7 

 5 

 4 



76 

 72 

 77 

 81 



6.5 



676 80.7 

 619 79.6 

 626 82 



74.3 

 79.5 



to 



78.3 



i)0 



55 



952 

 839 



55 920 



55 881 



778 

 698 



Per ct. 



weight 



of 



roots. 



Per ct. 



81.7 

 a3.2 



82. 4 



765 82.0 

 735 83.4 



19.3 15.3 



• ■ • » 



16.3 13.4 



16.4 1.36 



83 



55 951 786 82.6 



Some indication of the relative effect of the two kinds of 

 manures may be gained from knowing the relation by weight 

 of roots and tops. In 1900 and 1901 carefully selected beets 

 from all the plats were weighed before and after trimming. 

 The results of these weighings are given in Table XX. 



It does not appear from the above data that stable manure 

 induced an excessive growth of leaves as compared with com- 

 mercial manures. 



It is fair to inquire if, in the nature of things, there are 

 good reasons for expecting results different from those detailed 

 here. Why should plant food derived from stable manure cause 

 growth unlike that sustained by chemical manures? While we 

 cannot enter into all the secrets of the life of the plant, such a 



