EXPERIMENT STATION BULLETINS. 



359 



Table 9. — Concluded. 



♦Gross. 



RESULTS FROM THE USB OF LIME. 



Tests conducted ou the farm of John Wheetiug in Lapeer county in 

 all cases have shown excellent results from the use of lime. The soil 

 is a rolling sand on sandy silt sub-soil typical of large areas in that 

 section. The land has been farmed a number of years. Lime at the 

 rate of 2 tons per acre was applied in the spring of 1919 for corn. The 

 increase in yield of this crop due to the lime was 19.86 bushels and 

 920 pounds of stover. The following year oats were seeded on the same 

 areas. The increase in yield of oats due to the lime was 29.33 bushels 

 and 1,280 pounds of straw. After having deducted the cost of lime a 

 return of $29.95 was derived from the first two crops of a four-year 

 rotation. 



On the same farm and the same soil type an application of lime on 

 wheat land in the fall of 1919 gave an increase of 6.23 bushels of grain 

 and 832 pounds of straw. The returns above the cost of lime amounted 

 to $7.99 per acre. 



Lime is used profitably on the Cass county farm. Experiments to 

 determine the value of lime were started in the spring of 1917 on the; 

 Cass county farm. The soil is a sand to sandy loam on a sub-soil of 

 gravelly, silty nature. This land has been farmed for many years and 

 four years previous to 1917 had been idle because it was too poor to 

 produce profitable crops. An application of 6,300 pounds of lime per 

 acre was made on a series of plots with corresponding plots untreated. 

 A four-year rotation of soy beans for seed, rye, wheat and soy beans for 

 green manure, has been followed. The average increase of the limed 

 over the untreated plots is as follows: Soy beans, 1.14 bushels; rye, 

 1.70 bushels; wheat, 6.5 bushels and 632 pounds of straw; and soy 

 beans, 1,231 pounds of green weight. After deducting the cost of the 

 lime from the first three crops grown in the rotation there remains a 

 balance of $9.60 per acr^. On a similar treated series sweet clover was 

 grown as a green manure crop instead of soy beans, the last crop of a 

 four-year rotation. The average of the lime-treated over the unlimed 



