. Potatoes, a money crop, how to grow, fertilize, spray and harvest them at a profit . ce, which practically destroys their market value. The cause of scabis, of course, the introduction of the scab germ. The conditions that favorthe development and spread of scab are brought about by the use of woodashes, lime, stable manure, etc. An alkaline condition of the soil encourages the growth of the scabgerm. Only clean soils (i. e., soils free from scab germs) should be plantedto potatoes. Alkaline fertilizers should be avoided, and those of an acidcharacter used. Full directions for treating seed
. Potatoes, a money crop, how to grow, fertilize, spray and harvest them at a profit . ce, which practically destroys their market value. The cause of scabis, of course, the introduction of the scab germ. The conditions that favorthe development and spread of scab are brought about by the use of woodashes, lime, stable manure, etc. An alkaline condition of the soil encourages the growth of the scabgerm. Only clean soils (i. e., soils free from scab germs) should be plantedto potatoes. Alkaline fertilizers should be avoided, and those of an acidcharacter used. Full directions for treating seed potatoes so as to kill scabgerms that may infect the seed are given in our discussion of Preparationpf the Seed for Planting. We have also elsewhere mentioned the dusting of the seed pieces withfinely powdered sulphur. It is suggested by Dr. H. J. Wheeler, late Directorof the Rhode Island Experiment Station, that the beneficial results obtainedfrom use of sulphur in this way are due to its gradual oxidation in the soiland the consequent production of acid. 26 POTATOES: A MONEY CROP. CARMAN No. 3 In appearance, like Carman No. I, except that the tubers are moreelongated. In general appearance it resembles the Rural New Yorker No. 2,but is regarded as more popular. The skin and flesh are extremely white;of exceptionally good cooking quality and very prolific; tubers grow verycompactly in the hill, and it is, therefore, more easily harvested than anyother variety. It is a good keeper, with few very shallow eyes, and is deservedly ingood demand. (By courtesy of the E,. L. Cleveland Co., Houlton, Me.) POTATOES: A MONEY CROP 11 Dry Rot (Fusarium oxysporum). This fungous disease attacks thepotato plant under ground, first affecting the small fine roots. Later thetubers themselves are affected and the plants wilt or blight. Tubers infectedwith this disease are subject to dry rot while in storage. Land infected with this disease should not be planted to potatoes againfor from three to f
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