200 Diseases of Truck Crops 



storage house. Cabbage from badly diseased plants 

 should be disposed of early. 



Poor Storage Conditions. Cabbage houses are 

 usually built as permanent structures. When this 

 is the case, they must be thoroughly cleaned out arid 

 disinfected every year before storing a fresh crop- 

 All indoor framework should be sprayed with a solu- 

 tion of one pint of formaldehyde in forty gallons of 

 water. This is done a week or two before storing in 

 order to allow the house to dry thoroughly. 



In harvesting and handhng the crop, every care 

 should be taken to prevent unnecessary bruising of 

 the heads. Storers of cabbage are confronted with 

 the same difficulties as storers of sweet potatoes. 

 With both, the great problem is the ventilation and 

 the elimination of excess of moisture given off by the 

 crop in storage. In warm houses quantities of mois- 

 ture soon accumulate in the house, which, if not 

 carried off, soon deposit on the cabbage. 



Storage houses may be so constructed as to take 

 care of the ventilation and moisture under normal 

 conditions. The walls of the buildings should pro- 

 vide a dead air space to prevent the penetration of 

 the outdoor moisture. With brick walls, two four- 

 inch walls could be laid and tied up by a header 

 course, thus providing an air space of two to three 

 inches between them. Wherever possible thick 

 walls should be preferred, as these make it possible 

 to keep the interior cool during hot weather. The 

 roof should be provided with a good outer covering 

 of shingles, and with an inner lining so bmlt as to 



