

49 
differences in yield are scarcely sufficient to justify a con- 
clusion, being less than the differences between duplicate 
plats. 
Plats E. 1 to 5, received fertilization at the rate of 400: 
Ibs. acid phosphate per acre. Seed single eyes. The par- 
ticulars of the trial are expressed below : 
Yield, 
No. of Merch. Unmerch. 
plants. Ibs. ozs. Ibs. ozs. 
E. 1. Rows 22 in. apart, plants thinned to 
Brite Siege? OM bh, oop ji pias nes 1078 o14 7 40 4 
E. 2. Rows 22 in. apart, plants not thinned. 1110 141 0 30 «14 
E. 3. Rows 44 in. apart, weeded and hoed .. 530 61 14 taht) 
HK. 4. Rows 44 in. apart, neither weeded nor 
ETD, SESE @ paras Mia De SLE ae 470 No crop 
E.:5. Rows 44 in. apart, weeded not hoed... 522 165 8 21 12 
In such an unfavorable season for early planted potatoes 
we must be cautious how we interpret our figures. These, 
however, seem to show that when too closely planted, as in 
K. 1 and 2, the removal of all the stalks but one from each 
hill was of great advantage. 
K. 3 and 5 seem to indicate that cultivation was disad- 
vantageous, and these in comparison with E. 4 seem to 
indicate that the object. of cultivation for potatoes is the 
removal of weeds. A second trial, in another season, how- 
ever, might destroy these conclusions and furnish new ones 
equally as reliable, for such is the disadvantage of the plat 
system of experimentation that we cannot be sure of the 
propriety of our conclusions for any one year. 
In our F. plats, fertilized at the rate of 400 Ibs. acid 
phosphate per acre, and planted at the ordinary distance, 
viz: drills 44 inches apart, hills one foot apart in drill. These 
plats were intended to illustrate the effect of the kind of 
seed used: 
Yield: 
No. of Merch. Unmerch. 
; plants. Ibs. ozs. Ibs. ozs. 
F. 2. Ordinary whole potatoes.......... 570 506 12 54 12 
F. 5. Small whole potatoes............. 572 404 4 57 0 
F.. 6. J.arge whole potatoes.............580 467 12 78 4 
F. 3. Half potatoes, ordinary size....... 576 428 12 55 0 
F. 4. Quarter potatoes, ordinary size ....567 393 12 42 8 
F. 7%. Single eyes, ordinary size ........563 321 8 41 8 
ae 10; as * eS MaRS AGREE LEA Ag 542 492 12 30 4 
These figures, interpreted by the results of previous years 
trials, indicate that under circumstances of the distance of 
