42 STORRS AGRICULTURAL EXPERIMENT STATION. 
TABLE 9. 
SPECIAL NITROGEN EXPERIMENTS ON WHITE FLINT CORN 
(SERIES F). 
Weight and cost of fertilizers per acre, total crop, and increase of 
crop over that of the nothing plots. 





YIELD PER | ESTIMATED F- 
wa) FERTILIZERS PER ACRE. SECTION YIELD S) 
JB (1-50 Acre). | PER ACRE. | 7&2 
AY wo 
os ‘athe | Px 
= io a | 5 Ke ih i © on 
fe) ny oh B am ig te Nie ha ER os a8 
7, Kind. < fe) oop iS Uo | 5 pees 
~ 
5 es B D no ie 1) 
Lbs $ Lbs..| bs. |° Buse: Lbs, 44.8u 
o| Nothing, - = — 414,83) 22.3.7 15.2 LES tie 
Mixed Minerale’ as No. 6a, |480 
Nitrate of Soda (25 Ibs. N.), |160 
Mixed Minerals, as No. 6a, |480 
Nitrate of Soda (50 lbs. N.), |320 
9.64] 36.5 | 40.3 | 32.6 2015) 17.3 
1 Mixed Minerals, as No. 6a, |480 
{ 

13.14] 53.5|41.5|47.7| 2075 | 32.4 
16,04 1-5253 1 25.¢ 46.7 1290 31.4 
Ne) 
Nitrate of Soda (75 lbs. N. y 480 
Dis. Bone-black, Mixed } . 
| 
J 
6a 6.14] 32.0) 32.3 | 28.5 | 1015] 13.2 
Mur, of Potash, Min’'ls, § |160 
Mixed Minerals, as No. 6a, |480 
Sulph. of Am. (25 lbs. N.), |120 
Mixed Minerals, as No. 6a, |480 
) Sulph. of Am. (50 Ibs. N.), |240 
10 10.27| 52.5 | 41.3 | 46.8 | 2065} 31.5 
I 14.39| 59.5 | 37-5 | 53.1} 1875 | 37.8 
= 
as 1 Mixed Minerals, as No. 6a, -|480 
Sulph. of Am. (75 lbs. N.),. (360 
oo| Nothing, - -|— — |19.5|19.0/17.4/ 950) — 
64| Mixed Minerals, as No. 6a, |480 6.14/40:013755 135.7 | 1875) eee 
18.52) 46.5 | 32.5|41.5| 1625 | 26.2 









The amounts of nitrogen in the fertilizer and the total yields 
of crop.—Tables 8 and 9 above show the kinds, quantities 
and costs of fertilizers per acre as used on the different 
plots, the yields of corn and stover per section and per acre, 
and the increase in yields of grain on the fertilized sections 
over the average of the yields obtained on the two sections 
where no fertilizers were used. ‘The yields from the sections of 
series A are given in Table 8 and those from the sections of 
series F in Table 9. The yields per section are the actual 
weighings of the crop, and the yields per acre are calculated 
from these and the size of the sections. The last column of 
the table shows the effects of the different fertilizers on the 
yields of grain by a comparison of the yield per acre obtained 
on the sections fertilized with the average of the yield from the 
sections of the two plots not fertilized. 
The yields on the sections of plots o and oo, which were not 
fertilized, were of course very light. This is no doubt due to 
