22 STORRS AGRICULTURAL EXPERIMENT STATION. 
TABLE 67. 
SPECIAL NITROGEN EXPERIMENT ON COW PEAS. ” 
Percentages and pounds per acre of dry matter and of 










protein. 
Z FERTILIZERS cs Dry Matter. PROTEIN. 
Rs) ‘ =e N.X 6.25. 
om fy 
Bi ie : Pas ibs. | ¢ | Lbs. | g* | Lbs. 
o| Nothing, - - ~ - -| — | 18.31 2059121698 346 
Mixed Minerals, as No. 6a, - - | 480? 
Ane of Soda (25 Ibs. N.), - - | 160f | 17-7 | 4150 | 16.8 | 697 
Mixed Minerals, as No. 6a, - - | 480 ] | 
Nitrate of Soda (50 Ibs. N.), - mi B20 17. to) 3004 tone 747 
Mixed Minerals, as No. 6a, - - | 480) | 
eee of Soda (75 Ibs. N.), - - | g8of 16-6 | 4088 | 19.5 | 797 
Dissolved Bone-black, } Mixed {| 320 "i 
° 1 Muriate of Potash, ) Minerals, (| 160 § | 15-1 | 3488 (51ge7 087 
( Mixed Minerals, as No. 6a, - - | 480] 16 ae 6 
ase Sulphate of Ammonia (25 lbs. N.),- | 120 § | 72:5 | 357 ote 79 
Mixed Minerals, as No. 6a, - = 11480} foes PaaS 
os Sulphate of Ammonia (50 Ibs. N.),- | 240 {| as 355 : 59° 
of Mixed Minerals, as No. 6a, - - | 480) | F 6 Uber 6 
Sulphate of Ammonia (75 lbs. N.), - | 3604 14-7 | 300 ud 43 
oo} Nothing, - - - - ~ |. o>) [42050 |'2163.) 220 eee 
66} Mixed Minerals, as No. 6a, - ~ A 48OF | 17-4 eS 5th eieaes 643 

* Percentages of protein in dry matter. 
YIELDS OF PROTEIN PER ACRE. 
It is of interest to note the percentages and total yields of 
protein per acre in the cow peas as compared with the corn 
where the same kinds and amounts of fertilizers were used. 
In the case of the cow peas there seems to be very little rela- 
tionship between the percentages of protein in the crop and the 
quantity of nitrogen used in the fertilizer. The average yield 
of protein on the plots having only mineral fertilizers was 19 
per cent., while the average yield on the three plots having 
nitrate of soda was 18.4 per cent., and on the three plots having 
sulphate of ammonia, 19 per cent. ‘The yields of dry matter 
per acre were not much more than half as much from the cow 
peas as was obtained from the corn and stover on similar plots, 
yet the total yield of protein per acre was greater in all cases 
with the cow peas than on the corresponding plots with corn. 
This emphasizes the high feeding value of the cow peas. 
This crop has been used for several years on the College farm, 
