873 



ii wook as nieflinui-early sorts were Ivuly I'earl 277. S, 'I'liorhiirn 233, Fort Collins 

 No. 83 240, Early Kose 22X.4, I'litiianrs New Rose 194, Early Puritan 206, Fri'i-maii 

 213, and Faust 1889 203. The l>est sorts that would Ix- t-lassed as nK-dium-latc were 

 West No. 3 261.7 (rather ((..use). P. and W. Victory 231, Lazell Seedling 228.7, Per- 

 lectioii 213.4, and Suit])laut('r 206.2. 'I'lic licst late sorts were Enipin' State 273, Halo 

 of Dakota 261.2, Ideal 258, White Eleidiant 209.7, Crown Jewel 208.3, and Rural 

 Blusli 206.4. 



With the excei)tioii of West No. 3, every one of these varieties was 

 on tlie selected list of varieties tested at the station in 1S90 and a num- 

 ber of them were also highly commended in 1888 and 1889. 



t<ee<J ends tor pJautiiuf. — The results of an experiment in 1891 with the 

 stein end, middle, arul seed end of potatoes for seed are tabidated and 

 compared with those of the 2 previous years. The average yield in 

 bushels per acre for the 3 years have been as follows: Stem end 173, 

 middle 143, seed end 183. 



Whole fiibi'.rs vs. cuttings for seed. — The results of an experiment in 

 1891 with 2 varieties are tabulated and compared Avith those for the 

 2 previous years. The average yields in bushels per acre for 3 years 

 have been as follows: 



Markftal.lc tiil..rs 



Avera-if iiniimiit ol' seed 

 Xetgaiii per aere 



Whole, 

 tubers. 



Buiheh. 

 177.5 

 58.9 

 118.6 



Halves. 



Bushels. 

 ica. 4 

 28.6 

 140.8 



Quarters. 



BushfU. 

 135.3 

 14.7 

 120.6 



Eighths. 



Bushels. 

 121.3 



Single 

 eyes. 



BuiheU. 

 99.8 

 4.3 

 95.5 



I'lidititifi at different distances. — Tabulated data are given for an 

 exix'iiiiicnt in wiiich single eyes, quarters, and halves were idanted at 

 intervals (»f from 1 to 2.5 feet in the row. The results in 1891 are com- 

 jKired with those in 1890. The largest net yield Avas obtained from 

 halves, using 13.2 bushels of seed per acre, planted at intervals of 2 

 feet. 



Larf/c rs. small potatoes for seed. — Tabulated data are given for an 

 exjjerimeut in which halves and whole potatoes weighing from 1 to -1 

 ouiK-es were planted. The results in 1891 are compared with those in 

 1890. 



As grown in 1890, halves of any weight gave a larger market yield than whole 

 tnbers of twice the size, and the lai-gest net yield was fouu<l from halves of 2-onnce 

 potatoes or at the rate of 13.7 bushels per acre. 



Thi.s year the results are more irregular, and owing to the unfavorable season and 

 it may be to some irregularity of the soil that was not ai)paieut to tlie eye, it is diffi- 

 cult to draw definite conclusions from them. The largest net yield for two years has 

 been secured from halves of 1-ounee potatoes planted at the, rate of 6.8 bushels per 

 acre, and the next best yield from halves of 2-ounce potatoes at the rate of 13.8 

 buslicis |)er acre. 



Fertilizer tests. — These were on 27 plats, each containing 4 square 

 rods. 



The fertiliz!'rs used were stable uiaiiur.' under and over the seed and as a mulch 

 between the rows, wood ashes, nitrate of soda, sulphate of ammonia, dissolved 



