l6j Method of infection 37<* 



(7) Period of incubation. , 37^ 



( 8 j Time of natural infection ; 3713 



(9) Source of inoculum : }8 



( 10) Ovenvintering of the causal organism - 39 



(11) L method of developing the Claviceps stage ,.,; 39 



i g. Climate and other factors in relation to the disease W 



^ h. Varieties in relation to the disease , ". ^2 



i , Control measures kk 



( 1) Sanitation UU 



(2) Clean seed i+5 



(3) Soil treatment kS 



(4) Seed treatment kS 



( 5) Cultural methods ^+7 



(6) Resistant varieties ^7 



2. Other species of Claviceps 



a. Claviceps halansioidis Mbll ^+9 



h. " carcina Griffiths and Morris J . . . . 5O 



c . " cinereum Griffiths 5x 



d . " junci Adams 52 



e. " lutea 25311 52 



f . " microcephala Tul. , 53 



" nigricans Tul , ', 56 



" pallida var. orthocladea P. Henn..., 57 



" paspali Stevo and Hall •. 59 



VI. Bibliograd " philippii Eehm 6I 



" pusilla Ces., 62 



ranunculoides MSll 62 



11 



rolf sii Stev. and Hall 63 



