Ontario Sessional Papers, 1908, . yield of roots per acre. The roots generally keep well, are relishedby the farm stock and do not taint the milk when fed to milch cows. Twen-ty-four different varieties of mangels were tested during the past this number, 20 varieties have been grown for five years in succession. 1907 AGRICULTURAL COLLEGE. 203 The following table gives the yields of roots per acre for 1907 and also theyields of both the tops and roots for the average of five years. Tons of root& per acre. Varieties. Yellow Leviathan Evani Improved Mammoth Sawlog Suttons Mammo
Ontario Sessional Papers, 1908, . yield of roots per acre. The roots generally keep well, are relishedby the farm stock and do not taint the milk when fed to milch cows. Twen-ty-four different varieties of mangels were tested during the past this number, 20 varieties have been grown for five years in succession. 1907 AGRICULTURAL COLLEGE. 203 The following table gives the yields of roots per acre for 1907 and also theyields of both the tops and roots for the average of five years. Tons of root& per acre. Varieties. Yellow Leviathan Evani Improved Mammoth Sawlog Suttons Mammoth Long Red Griewener Mangel Long White Ideal Steele-Briggs Giant Yellow IntermediateSimmers Improved Mammoth Long RedCarters Windsor Prizetaker Yellow Globe Mammoth Golden Giant Gartens Improved Yellow Globe Rennies Perfection Mammoth Long Red Carters Mammoth Prize Long Red Steeles Long Red Selected Yellow Leutewitzer Norbitan Giant .... - Cornish Giant Yellow Globe Mammoth Red Intermediate Steele-Briggs Giant Yellow Globe Red Globe. The report shows a variation from to tons in average yield oftops per acre. The tops contain a large percentage of mineral matter and ifremoved from the land are quite exhaustive. If the valuable plant foodconstituents, which they contain, however, are retained evenly over the soilthe fertility of the soil is not exhausted to nearly as great an extent as if thetops were removed from the land entirely or were left in heaps over the average yield of roots per acre there is a variation from to tonsper acre, or a difference of exactly 7 tons. The Yellow Leviathan is an in-termediate variety which has made exceedingly satisfactory records bothin the experiments at the College and in the Co-operative experimentsthroughout Ontario. It has given a higher average yield of roots per acrethan any of the different strains of the Long Red Mangel which have beengrown at the College. It will be seen by a study of the results given in t
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