62 | ASSEMBLY 
Yield per calculated acre in bushels. 
Beauty 
Early Early Snow-  Bur- of 
Three and six inches deep. Ohio. Rose. flake. bank’s. Hebron. 
Single eyes, cut close, manured.......... oo la 4 5.8 bese 8.4 1 
Single eyes, cut close, unmanured...... con eee 4 5.8 6 6.6 4.8 
Four inches deep. 
Single eyes, cut deep, unmanured .,......... : ato @ 64.9 56.2 108 99 
Three and six inches deep. 
Ordinary cubspwmnanured sa Vou. ee. 4. ese ee pale 51 38.4 31 93.7 48.5 
Ordinary cuts, unmanured... .. Sioeweeese cada 66.3 94.8 54.9 126.2 68.3 
This table offers important indications, Thus, we observe that the 
unmanured portion of the field in every case gave superior yield to the 
manured portion, and be it remembered a good dressing of farm yard 
dung was applied. ‘Thus, average for the various plats. 
Unmanured. 
Single eyes, cut close.............. 2-1 bush. 3-5 bush. 
Ordinary coteei... 2. sme, ont. De oO. 82-1 bush. 
We may assume, then, that the plat system with manure is incapable 
of giving just measurement in any one year of the efficacy of fertil- 
izer ; in other words, manure under certain circumstances is unable to 
overcome at once slight physical differences between soils. 
Our next observation is the difference between the producing power 
of varieties. Under equivalent circumstances of seed, excluding the 
shallow cut eyes, the order of productiveness stood as follows : 
Manured. 
Burbank’s yielded at the rate of...............109-3 bush. per acre: 
Beauty of Hebron yielded at the rate of........ 71-9 bush. per acre. 
Karly Rose yielded at the rate of.............. 66-0 bush. per acre. 
Snowflake yielded at the rate of.............. 47-4 bush. per acre. 
We note as proven, that under circumstances of field culture, where 
the character of the soil is unfavorable, the use of single eyes cut shal- 
low, that is eyes containing but small portion of potato skin and sub- 
stance, is not to be recommended. Our crop from this seeding was a 
failure both in respect to the number of seed which vegetated, and in 
the yield of those that vegetated. Single eyes cut so as to include the 
prolongation of the eye into the substance of the potato yielded an 
average of eighty-two bushels per acre, while ordinary half-potato seed 
produced eighty-six bushels per acre. 
The figures obtained which bear upon the depth of planting may be 
selected from our tables and arranged as below : 
Early Ohio. Karly Rose. Snowflake. 
Ordinary cuts; manured; 3 inches deep, 43.7 bush. 51.6 bush. 34.6 bush. 
Ordinary cuts; unmanured; 3 inches deep, 84.7 bush. 106.5 bush. 50.5 bush. 
Ordinary cuts; manured; 5 inches deep, 58.2 bush. 25.1 bush. 27.2 bush. 
Ordinary cuts; unmanured; 6 inches deep, 46.6 bush. 83.2 bush. 59.1 bush. 
Average of 3 inch planting, 64.2 bush. 79.1 bush. 42.6 bush. 
Average of 6 inch planting, 71.5 bush. 54.2 bush. 43.2 bush. 
Burbank’s. Beauty of Hebron. 
Ordinary cuts; manured; 3 inches deep, 103.6 bush. 41.5 bush. 
Ordinary cuts; unmanured; 3 inches deep, 156.8 bush. 68.9 bush. 
Ordinary cuts; manured; 6 inches deep, 88.4 bush. 55.4 bush, 
Oridnary cuts; unmanured; 6 inches deep, 95.6 bush. 66.9 bush. 
Average of 3 inch planting, 130.2 bush. 55.2 bush. 
Average of 6 inch planting, 72.0 bush. 61.2 bush. 
