IRRIGATJOX ROUND TABLE 



113 



acres of ditch bank. A ditch and banks would occupy practically 

 a rod of ground. In one year we filled in those and grew celery the 

 same year. 



Question: What kind of tile does Mr. Bonney use and how 

 does he lay it? 



Mr. Bonnet: We bought from two or three different companies. 

 We use 4 inch tile and lay it on a board in the muck. We have not 

 used the horse-shoe shape. We have used six-sided and round, but 

 I would not advise laying round on boards. 



Mr. Work: Do you consider the -^^re scheme thoroughly 

 practical? I mean laying a wire in the tile when you put it down, 

 and then whenever you fear difficulty, hooking on a brush and 

 dragging it through, dra"^4ng another wire behind to take its place. 

 A man could well afford to do that frequently to avoid the possibility 

 of clogging. 



Mr. Bonney: I would advise running it through once in a 

 while to be sure the opening is large enough. 



SUB-IRRIGATION ON SANDY SOILS 



Question: Has anyone had experience in sub-irrigating a soil 

 similar to that in Irondequoit — a deep sand with very Httle sub- 

 soil? Wouldn't you have to put the tile so close that the expense 

 would be too great? Or wouldn't you lose all the water there? 



Mr. Work: I think there is no question but what in a very 

 porous soil you would lose water and lose it very seriously. 



A Member: Some of the growers there claim there is no use in 

 trying sub-irrigation. It looks reasonable to suppose it would not 

 be very successful. 



Question: What kind of irrigation do they use? 



Mr. Work: The Skinner system. In the case of the muck, 

 the whole body of soil underneath is full of water, so that it amounts 

 practically to raising the water level. 



Mr. Locke: That system is carried on a good deal in Florida, 

 but it is not successful where the soil is not underlain with clay. 



Mr. Work: On the muck, although we are not resting our tile 

 on clay, the whole space below is filled. If you have a clay subsoil. 



