Thirty-fourth Annual Convention. ^^^ 



demanded by wheat. The four years' results appear in the fol- 

 lowing table: 



° Years Wheat was Harvested. ^ 



6 Treatment of Plots. Bushels per acre. S ^ 



^ 1899 1900 1901 1902 ^ S 



1 Wheat following wheat five years 10.8 10.4 9.9 10.2 41.3 



2 Cowpeas each year after first crop 11.1 14.3 14.8 16.9 57.1 



3 Cowpeas — whole plants plowed in in 1898 15.8 14.8 11.8 11.8 54.2 



4 Cowpeas — stubble plowed in in 1898 15.8 12.2 10.1 10.9 49.0 



5 100 lbs. nitrate of soda in fall of 1898.. 13.7 9.8 9.4 10.1 43.0 



6 200 lbs. nitrate of soda in fall of 1898 14.0 10.2 9.5 10.3 44.0 



7 400 lbs. complete fertilizer in fall of 1898 14.9 11.6 10.4 10.8 47.7 



8 600 lbs. complete fertilizer in fall of 1898 15.4 12.0 10.4 10.8 48.6 



9 800 lbs. complete fertilizer in fall of 1898 15.9 14.1 10.9 11.2 52.1 



10 Cowpeas — while plant plowed in in 



fall of 1898 15.6 16.4 13.3 13.8 59.1 



11 Cowpeas— stubble plowed in in fall of 1898 16.2 13.9 10.8 11.2 52.1 



12 Wheat following wheat five years 10.4 10.8 8.1 9.8 39.1 



13 Cowpeas each year after first crop 10.6 14.9 15.3 17.6 58.4 



In 1898 the whole area devoted to the above tests was in 

 wheat and in orchard grass the previous year. After the 1898 

 wheat crop was harvested the land was thoroughly broken and 

 rebroken three months later, and just before the 1899 crop was 

 sown in October, 1898. Plots 3, 4, 10 and 11 were sown to 

 Whippoorwill cowpeas immediately after the wheat crop of 1898 

 was harvested. All plots were plowed alike when prepared for 

 the cowpeas, and again plowed and prepared when the pea plots 

 were sown to wheat. The whole cowpea plant was plowed in 

 on plots 3 and 10, and only the stubble on plots 4 and 11. These 

 four plots were not again sown to cowpeas or fertilized. They 

 were plowed twice each year between the harvest of one crop 

 and the sowing of the next, which was true also of all of the 

 thirteen plots. After harvesting the wheat of 1899, plots 2 and 

 13 were sown to cowpeas and the vines mown for hay, only the 

 stubble being plowed in. This sowing and harvesting of cow- 

 peas between crops of wheat was continued throughout the test 

 on plots 2 and 13. Plots 5-9, inclusive, received applications of 

 fertilizers designated only before the sowing of the 1899 crop. 

 No further care was given the soil of these plots between crops 



