PROJECT 7 



DETERMINING WHAT THE SOIL NEEDS 



Material. Plot of land and different fertilizers. 



Directions. Lay out twelve plots of ground exactly 2 rods wide and 8 rods long, marking the 

 boundaries of each by stakes driven well into the ground. Each plot will contain xtr of an acre. 

 Plow all the entire plots and add fertilizers as follows : 



Work the fertilizer well into the ground and be careful that the fertilizer on one plot is not dragged 

 on to another by cultivation. 



At the proper time plant the entire plot to the same crop — wheat, potatoes or cotton. Plant in 

 rows running lengthwise of the plot. As the growing continues throughout the summer give all the 

 plots the same cultivation in case potatoes or cotton is planted and observe the differences due to 

 fertilizers on the color, vigor, time of maturing, and yield of the crop. 



Record the results, using blank forms like those on the following page. 



[2061 



