34 
Colorado Experiment Station 
Interior of Potato cellar—round timber construction 
above ground, and when rightly constructed are both durable and 
economical. They are easily ventilated and retain an even tem¬ 
perature during winter. 
d'he main ,thing in building a storage is to provide for ade¬ 
quate ventilation, and two sets of ventilators should be ])rovided. 
Most potato cellars have only top ventilators. These will do 
little or no good unless there are one or more intakes to create 
a current or circulation of air. The intake should be at the base 
(E the cellar. The bins should also have a false floor to permit 
a circulation of air from below through the bin. If the potatoes 
are piled high in the bins, perforated stacks should be placed at 
intervals so as thoroughly to aerate the tubers. Cellar rots or 
decavs can, in most cases, be prevented l)v proper ventilation. 
CELLAR FUMIGATION 
One of the fertile sources of loss in potato storage is due to 
l)()or and disease-infested cellars. The cellar should be cleaned 
out and fumigated every spring after potatoes and other stored 
articles have been removed. 
The best method of cellar fumigation is undoubtedly the for¬ 
malin permanganate method. The following formula is recom¬ 
mended : 
E(U- every 1,000 cubic feet of cellar space use 3 pints of for¬ 
maldehyde and 23 ounces of potassium permanganate. The per¬ 
manganate is placed in a shallow dish or earthen vessel and the 
