PLATE HI. 



SM?^%^telff^^^ 



-Mv^'-r'--'-^'. 



Fig. 5. Tobacco field at Birowlie ; Orobanche cernua and Orobanche indica in plot which had received 



sodium nitrate — ^Season 1915-16. 



Fig. 6. "Tokra " at Birowlie in tobacco plot which had not received any nitrate — Season 1915-16. 



