1024 



Walter H. Blrkholder 



inoculated with both the fungi could not be separated from those inocu- 

 lated with Fusarium martii phaseoli alone. As to the yield in the different 

 rows, nothing could be determined from observation. Each row was 

 harvested and threshed separately and the amount of seed was weighed. 

 The data are given in table 3: 



TABLE 3. 



Effbct of Root Diseases on the Yield of the Bean during the Season 

 of 1917 



Row 



Inoculation 



Weight 

 of seed 

 (grams) 



Reduced or 

 increased 



yield 

 (per cent)* 



1(1 

 11 

 12 

 13 



11 



15 



16 



17 

 18 

 19 

 20 



21 



22 

 23 



2-1 

 25 

 26 



27 



28 

 29 

 30 



Buffer row 

 Black root-rot . 



Check 



Dry root-rot. . . 

 Black root-rot . 



Check 



Dry root-rot . . . 



Check 



Black root-rot . 



Check 



Dry root-rot . . . 

 Black root-rot . 



Check 



Dry root-rot . . . 



Check 



Black root-rot . 



Check 



Dry root-rot. . , 

 Black root-rot . 



Check 



Dry root-rot . . 



Check 



Black root-rot . 



Check 



Dry root-rot . . 

 Black root-rot . 



Check 



Dry root-rot . 



Check 



Black root-rot . 



Check 



Dry root-rot . . 

 Black root-rot . 



Check 



Dry root-rot . . 



Check 



Buffer row 



585 

 938 



3,749 



t 877 

 743 

 ,083 

 ,843 

 ,933 



3,538 



778 

 751 

 483 



722 

 916 



3,759 



006 

 781 

 922 

 565 

 111 



3,915 



345 

 242 

 738 

 421 

 604 



2,810 



041 

 394 

 162 



72.6 



76.4 



105.9 

 107.4 



72.9 



81.0 

 100.5 



75.8 



96.3 

 101.1 



92.6 



105.0 

 58.0 



65.0 



82.7 



* The reduced or increased yield is calculated by determining the percentage of yield of the diseased 

 row in relation to the average of the yields of the two adjacent check rows. 



