204 



DRY FARMING CONGRESS. 



The next slide shows another view of the poor listed against good 

 listed, and here you see a much better development of the corn listed and 

 taken good care of as compared with poor treatment. 



The next slide shows moisture conditions in kaffir at Amarillo. A 

 representing the spring plowed, B fall plow^ed and C listed. You will 

 notice there is very little difference in the three in the moisture contents 

 at Amarillo. The yields were rather light on account of dry weather, 

 although much better than corn. 



The next slide shows corresponding conditions for milo and the 

 jaelds, although the moisture conditions of the three crops were not 

 accelerated throughout the 3"ear. 



The next slide represents the moisture conservation at North Platte. 

 These figures represent part of the figures which Prof. Chilcott gave the 

 other da3^ Here we have the spring plowed and fall plowed and fallow^ed. 

 Yt)u will notice that the spring plowed and fall plowed and the full curves 

 in this case also follow very closely together. There is very little differ- 

 entiation there regarding the treatment, so far as moisture is concerned. 

 But there is a point you must always keep in mind there. If we have a 

 good crop it is using more moisture and it reduces the moisture contents 

 of the soil. These figures show the fall plowed land as being better than 

 the spring plowed, and the fallowed giving a better yield than either, but 

 you will notice here that the fallow doesn't begin to justify the expense 

 of maintaining the land idle during the whole season of cultivation. 



The next slide represents corn in North Platte. You will notice that 

 the conditions prevailing at North Platte last year, the summer fallowed 

 land didn't begin to differentiate itself from the rest until at the close of 

 the season. There was five per cent difference in the moisture at the close 

 of the season. There is a point I wish to call attention to here, namely, 

 that the yield of corn on the fallowed crop was 18 bushels, spring plowed 

 29 bushels, fall plowed 28 bushels. In other words, after having maintained 

 a fallow for a whole year and plowing the preceding year, we got very 

 much less yields than by continuous cropping. Of course it must be re- 

 membered that this is the result for a single season at this place. 



A DELEGATE: What was the rainfall? 



DR. BRIGGS: About 14 inches for the whole season. 



In the next slide we have the condition of wheat at Hymore, South 

 Dakota. The spring plowed land in this case leads in moisture contents 

 and the fallow advances. Here you see apparently we didn't gain- at all. 

 That may have been a special condition due to some peculiarity in that 

 plat. But it does not show any advantage from the beginning of spring 

 over the fallowing of the preceding year so far as moisture contents is 

 concerned. Thus you see this shows how the fallowed holds its moisture 

 against less moisture on the plats where the crops are being grown. The 

 plat in this case shows the lowest moisture contents. We didn't have the 

 record in time to put them on this slide. The record was furnished by 

 Prof. Chilcott for that station. For the spring and fall plowed land prac- 

 tically the same — about 29 bushels; for the summer fallowed 30 bushels; 



