Studies oe Heaetii in Potatoes. 
29 
best, and that where seed potatoes can lie maintained for years, con¬ 
ditions are good. The author has found the following instances of 
permanency and health in a vState most of whose area finds it 
desirable to send away for seed : 
Mr. W. C. Boyce, Winterset, Iowa, has maintained Bonanza 
potatoes on the same farm for 29 years. His farm is very large. 
He raised but five to ten acres of potatoes on portions of the farm 
that are extra well drained. 
At West, Iowa, Anton Neuman, potato man for one \'illagc of 
the Amana colony, has maintained Snowflakes for 37 years. He has 
deep, mellO'W, sandy loam. There are no other potatoes than his 
raised or used for a distance about the village. 
At Tabor, close to the Missouri line, Mr. Ed. L. Gladwin has 
maintained the same stock of Vick’s Champion potatoes for 27 
years. His soil is deep, self-draining loess and he raises but one 
or two acres on a considerable farm. 
At Auxvasse, in central Missouri, Mr. I. J. Attemron main¬ 
tained Early Rose for 31 years and then lost seed accidentally. 
The soil and climatic conditions for health of cabbage are very 
much the same as for potatoes. The Amana society has grown 
cabbage as one among a full line of vegetables,,on sandy loam in 
Iowa county for 60 years without serious disease. In the second 
county east, in a specialized cabbage district, cabbages cannot be 
grown safely more than one year on tlie same ground. Often 
Figure 17.-—The health needs of cabbage are much like those of potatoes. 
Among cabbages are found plants which dp not have the yellows or Fusarium 
disease. Their progeny is for the most part resistant also. In the center is 
shown on sick ground healthy cabbages which produced 20 tons per acre, 
where plants from other seed, on right, were all sick. 
