Fertilizers Applied to Timothy Corn Crop. 175 



tilizers on these ten plats were applied directly to the corn. Plats 711-732 

 comprised the regular rotation plats, each containing i-io acre. These 

 received no fertilizers in the spring of 1908. The purpose is to compare 

 the practice of fertilizing for tiie hay crop and allowing the grain to take 

 the resulting effect, with that of fertilizing directly for the grain. This 

 comparison cannot be made until the rotation is finished. 



It was decided to leave a bare space of 22.5 feet on each end of each 

 plat so that soil samples could be taken for comparison with samples 

 from the cropped parts of plats in regard to moisture and nitrates. 

 This reduced the size of the plats in crops to approximately 1-21 of 

 an acre on plats 701-710, and to 1-12 of an acre on plats 711-732. 



All plats were plowed in the fall of 1907, the timothy sod being turned 

 under to the depth of seven to eight inches. In the spring of 1908 the 

 soil was prepared for corn with the disc and spring tooth harrows. On 

 May 2S, 1908, fertilizers, as outlined in Table I, were applied to plats 

 701—710 with the exception of the stable manure, which was added before 

 the soil was disced. As stated, plats 711-732 received no fertilization 

 at this time. 



On May 29 all plats were planted to corn (Pride of the North) thai 

 had been grown for several years on the University farm. The hills 

 were 3^ feet each way. When the corn was four inches high it was 

 thinned to four stalks per hill. Cultivations were given on the following 

 dates : June 8, June 2t„ July 7, July 20. A heavy rain and wind 

 storm on August 3 blew down the corn badly and prevented further 

 cultivation. 



From the first the corn grew very much more rapidly on- plats 701-710 

 than on plats 711-732 for reasons already stated. As a result of this 

 relatively high productiveness of the former plats, the fertilizers added 

 to them did not produce a marked increase as compared with the effect of 

 the fertilizers previously applied to the latter series of plats. 



When the corn kernels had reached the glazed stage (September 24), 

 all plats were harvested and the corn forage from each plat weighed as 

 cut. The corn was then shocked and allowed to cure thoroughly, when 

 it was husked and the ear corn and stover from each plat weighed 

 separatel}'. 



The following tables give the data for the harvested crop : 



