42 



INFLUENCE OF ENVIRONMENT ON SWEET CORN. 



MARYLAND. 



The seed used for planting at the Maryland station was selected 

 from the 1906 crop. The soil was a sandy loam, which had been 

 well limed the previous year, and had a crop of alfalfa grown on it. 

 It was prepared by disking, harrowing, and pulverizing until in the 

 best possible condition, and commercial fertilizer was sown in the 

 rows. 



The corn was planted about 4 inches deep, the rows being 3 feet 9 

 inches and the hills 15 inches apart. The crop came up well, but 

 owing to the low temperature of May and June and the number of 

 rains, the growth was very slow. When the corn was in edible 

 condition, about August 15, there was a better stand than had been 

 expected. The cultivation and fertilization were the same for the 

 Crosby and Stowell Evergreen varieties. The Crosby corn reached 

 the edible condition from August 7 to 12, and the Stowell Ever- 

 green from August 19 to 22. The character of the season is shown 

 by the following table : 



Meteorological data for College Park, Md., 1907. 



Sunshine data taken at Washington, D. C. 



The mean temperature at the Maryland station was very much 

 below the average until July, the month when sugar is formed, when 

 it increased to the normal figure, and the rainfall was nearly the 

 same as that given for the South Carolina station for this month. 

 The number of clear days is below the average, but the number of 

 partly cloudy days is high and the sugar content is much greater in 

 both varieties than in 1906, amounting to 22.7 per cent for the 

 Crosby and 25 per cent for the Stowell Evergreen. A wide variation 

 in sugar content is shown for both varieties, the maxima being 43.85 

 per cent for Crosby and 41.42 per cent for Stowell Evergreen, and 

 the minima 11.16 and 15.21, respectively. The detailed analytical 

 data follow: 



