No. 4.] TRUCK FARMING. 29 



Systems of cost accounting are receiving careful attention 

 by the various farm management departments, but the ques- 

 tions involved in proper marketing of garden products are re- 

 ceiving but little consideration. The matter of distribution is 

 of much importance. It frequently happens that vegetables 

 will be selling very low in one neighborhood and high in an- 

 other only a few miles distant on account of the poor methods 

 of distribution. This feature should receive attention by the 

 departments of agricultural economics. 



Mr. H. F. Arnold. I wonder if it would be out of place for 

 Professor Johnson to tell us what the trouble was that he spoke 

 of with those cabbages, and what the remedy was that he 

 applied to that trouble. 



Professor Johnson. It was a form of wilt which was over- 

 come by treating the seed with a formaldehyde solution. 

 Treatment in that way would have effectively prevented that. 

 It was a disease that was brought in with the seed. The Ohio 

 Experiment Station and Federal Department of Agriculture 

 both published bulletins on that proposition. 



Question. I would like to ask the professor if he has found, 

 in his experience, any difference in the keeping qualities of 

 vegetables raised by irrigation. 



Professor Johnson. Not in my personal experience. In the 

 west the farmers claim to have produced a better grade of 

 vegetables by irrigation, but they have a tendency to be a 

 little softer. But the quantity and the grade are so much better 

 that they counteract any negative results. 



Mr. Howard. In regard to that disease in potatoes, how 

 did that affect the potatoes? 



Professor Johnson. The disease makes its appearance on the 

 young potato plant when it is 6 to 12 or 15 inches tall. It 

 causes a blackening of the stem first, which runs down to the 

 tuber, the stem topples over and the tuber rots. This disease 

 has the fortunate habit of not carrying over in the soil, so that 

 it is a very easy disease to control. 



Mr. Lewis. I would like to ask the speaker if he can give 

 us any information on the melon blight or cucumber wilt. 



Professor Johnson. There are two or three of those blights. 



