142 MAINE AGRICULTURAL EXPERIMENT STATION. I903. 



ROSE. 



Aug. 21. 

 Aug. 26. 



Unsprayeu.* 

 Tops dark green. 



No blight. 



Some blight on most plants. 

 Considerable blight on a 

 few plants. 



Sept. 1. Leaves on many plants one- 

 third dead. 



Sprayed.* 

 Aug. 21. Plants small, good color. No 



blight. 

 Aug. 26. Quite a little blight. More 



on some plants than others. 



Sept. 



Sept. 8. Leaves all dead on some Sept. 

 plants, one-half dead on 

 others and an occasional ■ 

 plant still quite green. I 



1. Leaves on many plants one- 

 fourth dead. 



8. On most plants leaves half 

 dead. Stalks still good 

 color. 



Sept. 10. 



Tops as on Sept. 8. Harvested 

 55 hills. There are appar- 

 ently two varieties. The 

 dead vines have light rose 

 colored tubers and look like 

 Earlj^ Rose. The vines that 

 are still green have much 

 redder and thicker potatoes 

 which are inclined to grow 

 with prongs. 



Oct. 



Aug. 21. 



Tops all dead, 

 hills. 



Harvested 55 



Sept. 10. Vines as Sept. 8. Harvested 

 55 hills. Mixed same as the 

 unsprayed. 



Oct. 7. Tops all dead, 

 hills. 



Harvested 55 



EARLY MICHIGAN. 



Unsprayed. 

 A very few spotted leaves on 

 3 or 4 ]ilants. Does not look 

 like blight. Vines good 

 color. 



Aug. 26. Considerable blight. 



Sept. 1. Leaves one-half dead with 

 blight. 



Sept. 8. Vines are from three-fourths 

 to entirelj' dead. 



Sept. 10. Vines as Sept. 8. Harvested 

 35 hills. 



Oct. 7. 



Aug. 21. 



Aug. 26. 



Sept. 1. 



Sept. 8. 



Sept. 10. 



Sept. 7.5. 

 Sept. 19. 

 Oct. 7. 



Vines 

 hills. 



dead. Harvested 55 



Aug. 21. 



Sprayed. 

 No blight. Vines small to 

 medium, good color. 



Aug. 26. Quite a little blight. 



Sept. 1. One-half of leaves dead with 

 blight. 



Sept. 8. A few plants still vigorous. 

 Others from three-fourths 

 to entirely dead. 



Sept. 10. Vines as Sept. 8. Harvested 



55 hills. 



Oct. 



dead. Harvested 5.t 



Unsprayed. 

 Strong vigorous vines 



cellent color 



7. Vines 

 hills. 



HULETT'S RUST PROOF. 



Sprayed. 

 Aug. 21. Good vines. Dark in color. 

 Mostly in bloom. No blight. 



Ex- 



No blight. 



Vines making good growth. Aug. 26. 

 In bloom with many Duds \ 

 not open. No blight. 



Still in full bloom and more Sept. 

 buds to open. Vines green 

 and vigorous. An occasion- 

 al spot that resembles 

 blight. 

 Tops laige and good color. A 



few buds to onen, but for Sept. 8. 

 most part nearly through 

 bloom. Very little sign of I 

 blight. I 



In full bloom, with still many 

 buds to open. Ko blight. 



Still in full bloom with some 

 unopened buds. No blight. 



Still in full bloom, 

 of blight. 



No signs 



Harvested 7 hills. Tubers Sept. 10. Too green to dig. 

 very unripe. No rot. 



P>light beginning to appear. 



Vines going down with bliglit. 



Harvested 55 hills. Tubers 

 still quite green and stems 

 still green and standing. 

 No rot. 



Sept. 1.5. No blight. 



Sept. 19. Very little blight. 



Oct. 7. Stems and a few leaves still 



gieen. Harvested 55 hills. 



Tubers quite green. No rot. 



* By unsprayed rows are meant plots 1—12 to which Bordeaux mixture was not 

 applied, and spraye«l rows mean plot.-^ 13 -'24 which were sprayed seven times 

 with Bordeaux mixture. 



