364 



^Bulletin 264." 



doubt about the matter, or before liming a large area, a test should be 

 made. 



COOPERATIVE EXPERIMENTS IN THE GROWTH OF CLOVER 



The Department of Farm Crops desires to conduct cooperative 

 experiments with farmers in the growth of clover. Such experiments 

 may be performed as follows: In the field that has not grown clover 

 successfully, measure off a plot 4 rods square and divide it in the 

 center both ways. This will give four plots each two rods square. 

 Drive a stake at the corner of each of these. This is only a small plot 

 and may be tried in a grain field or in any other convenient place: 



X 



X 



X 



X Stakes 



Apply half a load of manure, about 1,000 pounds, to plots 2 and 4. 

 This is equivalent to 10 tons per acre. Apply one bushel of lime to 

 plots 3 and 4, equivalent to 20 bushels per acre. We then have: 



Plot I, nothing. 



Plot 2, 10 tons manure per acre. 



Plot 3, 20 bushels lime per acre. 



Plot 4, 10 tons manure and 20 bushels lime. 



Sow the clover on these plots in the usual way. 



We desire a report of the effect of each treatment on the clover and 

 on the grain crop, if one is used. We shall also be glad to have reported 

 the yield of hay from each plot. This may be easily obtained as follows: 

 Mow each of the small plots with a scythe, loop the hay up with a rope 

 and weigh with a spring balance. If clover begins growth but later 

 dies, as if diseased, send us some of the diseased plants for examination. 



