Farmers' Week in Agricultural College. 



153 



no clover at all is very marked. This line is the boundary between 

 manure and no manure. The seed, of course, was sown over the entire 

 field alike. A much better growth of clover could not be secured under 

 any circumstances than was found where the manure was spread ; where- 

 as, where there was no manure, nothing existed but a very poor growth 

 of timothy, a few stunted weeds, sorrel,*' and bare ground, the bare 

 white ground predominating. 



Fig. 1 The eflfects of a light top dressing of manure. 



Where the manure was spread it was very noticeable that all of 

 the sorrel had disappeared and nothing but clover grew. The clover 

 had so thoroughly taken possession of the soil that the sorrel had been 

 completely smothered out, proving that the smothering out process 

 is one and possibly the only successful way of getting rid of sorrel. 

 Anything that makes clover or other crops grow so thickly and so 



*It might be well to state that in some sections sorrel (Rumex Acetosella) is not 

 common. It is found in great abundance, however, in the eastern and southern part 

 of Ohio, and seems to be most abundant on soils of shale and sandstone origin. It 

 is usually considered as indicating the lack of lime. This, however, should not be 

 understood to mean that an application of lime will kill it, except as it might cause 

 clover or other dense-growing crops to grow more vigorously and smother it out. It 

 has been found growing vigorously in the edge of a pile of pulverized limestone. Sorrel 

 should not be taken as an absolutely certain indication that an application of lime is 

 entirely necessary for the growing of clover without some further investigation along 

 this line by experimenting with lima itself. The ether factors, such as methods of 

 seeding, applying manure, etc., which are being set forth in this circular, ought to be 

 studied also in this connection. 



