44 



Potatoes. 



According- to the reports of the Bureau of Industries, the potatoes 

 grown in Ontario within the past twenty years have given a greater 

 market value per acre than any other farm crop grown throughout the 

 Province, being slightly in advance of that of field carrots, turnips, or 

 m ngels, and about three times as great as wheat, oats, barley, or peas. 



Varieties. One hundred and four varieties of potatoes were 

 grown in the Experimental department in 1904, on what might be 

 termed an average clay loam. Three rows each four rods in length 

 and three and a third (26 2-5 inches) apart were used for each variety. 

 Owing to the unfavorable weathe- during the latter part of May and 

 the early part of June, the potatoes were not planted in 1904 until the 

 tenth day of June. Furrows were made with a double mould board plow, 

 and fifteen pounds of each variety were planted and covered to a depth 

 of about four inches. Level cultivation was used throughout the sea- 

 son. B"- Death, which is clai to be an insecticide and also a fun- 

 gicide, was sprayed on the tops of all the varieties on Jul- 13th, July 

 25th, and August 3rd. When the potatoes were dug in the autumn, 

 careful determinations were made .-regarding the exact percentage of 

 rotten potatoes, the yield of sound potatoes per acre, and the percent- 

 age of potatoes which were of the proper size tn be marketable. As 

 the rot hoti^i at the College and (hrourrhout ' Ontario was very bad in 

 1904 as well as in 1903, it is thought wise to present the results of all 

 the varieties which were under experiment during both of these years. 

 A table is therefore presented, giving the average number of days to 

 reach maturity, the yield of sound potatoes per acre, and the percent- 

 age of rotten potatoes of each of the eighty-two varieties grown in 

 1903 1904. 



Varieties. 



Average results ror two rears, 

 1903-04 . 



1. Holbom's Abundance . 



2. Robertson's Champion 



3. Skerries 



4. Up-to-date 



5. Stray Beauty 



6. Sensation 



7. Tremendous 



8. Factor 



9. Early Pinkeye 



10. Green Bay 



11. Seedling No. 230 



12. Main Crop 



13. Bliss Triumph .... ... 



14. GemmeH's Seedling ... 



15. Salzer's Earliest 



16. Irish Cups 



17. Always 



18. Howe's Premium 



19. Carman No. 2 



