Influence of Soil Environment on Rootrot of Tobacco 



Plate 6 



June / 3 5 7 9 W I3 15 I7 19 21 23 25 27 29 3/ 



36 

 34 

 32 

 30 

 ZQ 



'^^ 





i^20 



16 



10 

 JUN£ I 3 5 7 9 II IS J5 17 19 21 2Z 25 27 29 31 



32 

 30 

 2d 



1/) Vg /26 



^S24 

 10 



June » 3 579 n 13 n n 19 21 23 zs 27 29 31 



W 



Journal of Agricultural Research 



Vol. XVII, No. 2 



