334 



Such tables as these show that the weight of the rKatiire ears at 

 harvest will not differ much from the weight of the yhole plant 

 when dried at the stage of full tasseling, the variations froixi this rule 

 being about 10 per cent above or below for these varieties. 



The closeness with which corn or maize or other cereals may be 

 planted depends not only upon the quantity of moisture available in 

 the soil, but also upon the ultimate proposed nature of the croj:). 

 Thus in experiments made by the Illinois Agricultural Experiment 

 Station, when corn is planted for ensilage one plant to every 3 inches 

 gave the best result. When planting for the grain the thinnest 

 planted plats gave 5,664 and the thickest planted gave 18,932 ears per 

 acre. As to the date of planting, May 4 to May 19 gave the best 

 harvest. 



As to mode of planting, hills nor drills nor fertilizers gave any 

 strongly marked differences. 



As to pruning the roots, the pruned and unpruned showed no spe- 

 cial difference in regard to size, vigor, date, or yield of harvest. 

 (Agr. Sci., Vol. II, p. 162.) 



The development of corn from week to week during the growing 

 season has been studied by Thomas F. Hunt at the University of 

 Illinois Agricultural Experiment Station, at Champaign. He states 

 that the same 18 varieties of corn have been grown at this institution 

 during each of the years 1887, 1888, and 1889, the same varieties 

 being always grown on the same plats and the seed obtained from the 

 same source. The average yield of air-dried corn per acre for the 18 

 varieties was 29.4 bushels in 1887, 83.2 bushels in 1888, and 66 bushels 

 in 1889. Meteorological conditions appear to have been largely, if not 

 solely, the causes of these differences in the yield. In 1889 measures 

 were made weekly on three plants on each hill of Edmund's Golden 

 Dent, which is usually an early variety, but this year matured late, 

 owing to the low temperature. The corn was planted four kernels to a 

 hill on the 4th of May ; it sprouted on the 20th of May, the soil hav- 

 ing been very dry, and made slow growth to June 10, on account of 

 the low temperature. The following table shows the weight of dried 

 substance in a hill of three plants of uniform character : 



