EXPERIMENT STATION BULLETINS. 



229 



a late hoeing was given, mainly for the purpose of bringing some dirt against 

 the hills and thus prevent the exposure of some tubers made possible through shal- 

 low plowing. Potato bugs came in large numbers early in the season and spraying 

 was started soon after the potatoes were up, white arsenic and Bordeaux mixture 

 being used to exterminate the bugs and at the same time guard against early or 

 Jate blight. Bugs proved persistent and not all were destroyed after four spray- 

 ings had been given. Though blight was prevalent elsewhere, as could be seen 

 from a plot purposely left unsprayed, the vines were kept immune until August 

 3 when spraying was stopped owing to an accident to the spray pump and the 

 inability to get it repaired until too late in the season. Further growth was 

 seriously checked thereafter, many vines were dead before the advent of the 

 September frost and, as a consequence, the yield of all varieties was materially 

 reduced. The varieties most resistent to blight were Sir Walter Raleigh, Rose 

 of Erin, Northlight and Wonder of the World in the order named. All the vines 

 were badly damaged by the frost of September 13 and killed by the frost of Sep- 

 tember 25. All varieties were quite ripe when harvested. The following varieties 

 were tested for the first time: 



Rosy Morn. Vines 20 inches, small, light green. Tubers round, oblong and 

 slightly flattened. Skin pinkish white. Eyes broad, open, of medium depth, often 

 with sharp prominent lip, and pink color. Flesh white, fine grained and dry. 



Norther. Vines 20 inches, slender, dark green. Tubers round oval, slightly 

 oblong. Skin white somewhat russeted. Eyes open, broad and shallow with pink 

 markings. Flesh white, dry and of good quality. 



Dew Drop. Vines 20 inches, light green, strong and spreading. Eyes narrow 

 and irregular, running from very shallow to medium deep. Skin pink and smooth. 

 Tubers oblong, oval and flattened, often pointed at seed end. Flesh white, coarse, 

 but fairly dry when cooked. 



Wonder of the World. From seed kindly furnished by S. T. Simpson of Bruce's 

 Crossing (Mich.). Vines 26 inches, dark green, vigorous and spreading. Tubers 

 oblong, slightly oval and flattened. Eyes narrow, very open, shallow. Skin 

 slightly russeted, white and marbled with light pink. Flesh white, fine grained, 

 dry and of excellent quality. Very prolific and an attractive market variety. 



Northlight, a new variety introduced by the Wernich Seed Co. of Milwaukee 

 (Wis.), who kindly furnished the seed. Vines 28 inches, stout, spreading, dark 

 green. Tubers oblong, broad, flattened. Skin pink and finely netted. Eyes, nar- 

 row and very shallow. Flesh white, coarse but dry and of good flavor. 4 good 

 yielder and tubers mostly of marketable size. 



Varieties of potatoes planted in 1902: 



Varietj 



Pingree 



Six Weeks 



Bovee 



Rosy Morn 



Dew Drop 



Irish Cobbler 



Northern 



Honeoye Rose 



Harrington Peer 



Pinkeye 



Hurst 



Thorouphbred 



Pride of Michigan.. . . 



Delaware 



Northern Beauty 



Rose of Erin 



Sir Walter Raleigh... 

 Wonder of the World 

 Northlight.... 



Date of 

 planting. 



May 30 



June 9 



June 5 



June 9 



Juno 9 



June 

 June 

 June 

 Juno 

 June 



June 7 



Juno 5 



June 10 



Juno 5 



June 6 



Judo 7 



June 9 



Juno 4 



June 4 



Date of 



blossom- 

 ing. 



July 18 



Julv 29 



July 25 



July 29 



July 29 



Aug. 3 



July 31 



July 2S 



Julv 25 



July 28 



July 29 



Julv 29 



Julv 30 



July 25 



July 25 



July 

 AmS- 



26 

 12 



July 27 

 Aug. G 



Yield per acre in bushels. 



Large. 



122 2-9 

 113 1-3 

 113 1-3 



80 



74 2-3 



93 1-3 

 62 2-9 



133 1-3 



112 



115 5-9 



117 1-3 

 112 



111 1-9 

 142 2-9 

 146 2-3 



215 5-9 

 215 5-9 

 186 2-3 

 177 7-9 



Small. 



8 8-9 



Total. 



131 1-9 



126 2-3 



133 1-3 



93 1-3 



90 2-3 



106 2-3 

 75 5-9 

 140 



117 1-3 

 133 1-3 



128 



122 2-3 

 122 2-9 

 151 1-9 

 160 



222 2-9 

 226 2-3 

 193 1-3 

 184 8-9 



