IRRIGATION- — ROUND TABLE 117 



Mr. Work: I do not believe so. Forty to fifty pounds is recom- 

 mended. 



Mr. Rogers: On the farm where I worked they used seventy- 

 five pounds. 



Mr. Work: What was the difference in the working? 

 Mr. Rogers: No difference, except that the spray was finer 

 with the higher pressure. 



Mr. Work: If the pressure is reduced, it does not throw quite 

 so far. 



President White : A pressure of eighty pounds will throw thirty 

 feet. 



Mr. Locke: With the Skinner system they advocate forty 

 pounds pressure. 



Mr. Work: The Skinner Company has very full literature on 

 pressures and capacities. What about water supply, Mr. Wrigley? 



Mr. Wrigley: We pump it from a drilled well. I can get 

 about three barrels a minute, and can water three-quarters of an acre 

 a day with an inch of water. 



Mr. Work: Do you regard an inch as about the right amount 

 of an ordinary application? 



Mr. Wrigley: Yes. 



Mr. Work: That seems to be more or less standard among the 

 different discussions of irrigation. That means about twenty- 

 seven thousand gallons on an acre. The frequency of watering 

 depends altogether upon the weather. But do you not believe, Mr. 

 Wrigley, that it is better to water thoroughly and less frequently 

 than a little at a time? 



Mr. Wrigley: I recommend an inch every ten days, and culti- 

 vating well twice or three times. 



Mr. Work: Irrigation does not let us out of cultivation. To 

 get the full value of irrigation, it is necessary to cultivate, and it is 

 not best to use more water than is necessary. 



Question: What time of day is watering done? 



Mr. Wrigley: Any time. 



