ACCLIMATION AND YIELD 



119 



plants are tall and have a low proportion of ear to 

 stalk. 



EFFECT OF PREVIOUS ENVIRONMENT ON YIELD 



88. The marked effect of a change in environment on 

 yield of grain has often been noted, the change usually 

 decreasing the yield at first. At the Arkansas station/ 

 233 samples of corn were collected from various States 

 and grown in comparison for two years. 



In 155 trials with seven varieties, the highest yield was 



secured with seed grown between the thirty-fifth and 



thirty-eighth parallels of latitude, rather than either 



north or south of this region, this being the latitude of the 



Arkansas station. 



TABLE XIX 



Table showing the Yield op Corn from Seed of Differ- 

 ent Sources at the Arkansas Agricultural Experi- 

 ment Station 



1 Newman, C. L. (1899.) Ark. Agr. Exp. Sta., Bui. 59. 



