
POT EXPERIMENTS WITH FERTILIZERS. key, 
Although the total yield was smaller the second year, the 
percentages of nitrogen in the crops on corresponding groups 
were higher in 1899 than in 1808. ‘The higher percentage of 
nitrogen found in 1899 may have been due to the influence of 
the fertilizer nitrogen left over from the previous year which 
was taken up by the crop of the second season, or it may have 
been due to the acquisition by the plants of a relatively larger 
proportion of the nitrogen used as a fertilizer when the smaller 
growth occurred. 
TABLE 49. 
Nitrogen in fertilizer and in crop in pot experiments with Fun- 
garian grass, 1899. 

} 






FERTILIZER. 2 | 
fee a see 
2 1 oH i) 
aes Sale Se ee 
Eien SAMPLE. 4 S "eb P| | Py 
‘ct & | Kind. og re | ae 
aaa Gea ee 
gs 
i 
Gms! Gs} % cm Wh 
6204/17, Hungarian grass,| Minerals only, - = ey | eens ES) 1.20 .23 7,50 
6205/18 Hungarian grass,| Minerals only, - - a 20 E2816 271. 8406 
6206/19 Hungarian grass,) Minerals only, - - Se tT 27 2a TT Onan 
6207/20) Hungarian grass,| Minerals only, - - =| = FEO I.19).23, pe ee 
Average, - 181.35) .24 8.42 
6208 21; Hungarian grass,| Minerals + 4 nit. ration, - {3.08/20 1.87).37|11.69 
6209/22) Hungarian grass,| Minerals + { nit. ration, - /3.08/18 T.50).,.321 0 nian 
6210/23, Hungarian grass,! Minerals + + nit. ration, - |3.08/20 1.80) . 30/51. 25 
6211/24) Hungarian grass,| Minerals + 4 nit. ration, - |3.08|17 1.74 .30 10.88 
Average, - | 19 1.80 94/1127 
6212/25, Hungarian grass, Minerals + } nit. ration, - |6.16/28 2.05/.5712.81 
6213/26 Hungarian grass,, Minerals + # nit. ration, - [6.16 23)1.97|.45/12. 31 
6214/27) Hungarian grass, Minerals + 3 nit. ration, - |6.16/26/1.89 .48 11.81 
6215/28 Hungarian grass,| Minerals + } nit. ration, - |6.16 24 2.06 .49'12.88 
Average, : 25)1.99 .60 12.45 
6216 29 Hungarian grass,| Minerals + full nit. ration, |9.24/28 2.12) .59/13.25 
6217/30, Hungarian grass, Minerals + full nit. ration, |9.24|26/2.16 .56/13..50 
6218/31 Hungarian grass, Minerals + full nit. ration, |9.24|30/2.07 .62/12.94 
6219/32, Hungarian grass,| Minerals + full nit. ration, |g. 24/21/2.2 .47'14.06 
Average, - 26/2.15 .66 18.44 






EXPERIMENT WITH ORCHARD GRASS, 1899. 
The experiment with orchard grass, pots 33 to 48, was started 
in 1899, with sods taken from the plots in the grass garden 
which for six years received mineral fertilizers only. ‘The first 
