Table II.— Conidiophore-bearing areas on representative maize plants of various ages infected by downy mildew 
260 
Journal of Agricultural Research 
Vol. XXIII, No. 4 
Conidium production. 
Very heavy. 
Do. 
Medium. 
Heavy (stunted plant). 
Very heavy. 
Do. 
Do. 
Medium. 
Heavy. 
Very heavy (full-sized plant). 
Percentage 
conidio- 
phore- 
bearing. j 
SRS ass SS'S-S 
4 4 s s's f.'i s a 3 
i 
rt 
Total. 
% * * ^ 
j 
Sheaths. 
. 2 8 S'S.KSS^'S'S 
! "is,assess a 
<0 
Blades. 
.&4?4R8 3-8S8 
® s H a Si? 
<0 “ " " 
Total. 
. S.45 R S"S 3 S’ 3-8 
*uuin§n 
t? - - -««« «*0 
j 
i 
Sheaths. 
. ms ms 51 s 
c? 
Blades. 
. 8>?SS-8 as?88 
C/J H M H H « N « tfl 
Approxi- 
height. 
0000000*^00 
^ag*ssss3 
u 
Number of leaves. 
6, seventh unfolding. 
7, eighth unfolding. 
9 tenth unfoldinsr. 
8, and tassel. 
8, ninth unfolding. 
9 , tenth unfolding. 
9, and tassel. 
n. 
12 , and tassel. 
Approxi¬ 
mate age. 
£ *'*'*% >ONOM OO 
i3 3 S3 
6 
J H c<5 Tf tno l>00 O* 0 
*3 ££8 3 'ft 
S £0 B Eo 
Unit 
Eft £$*<8 
'll § S.H 
mm 
mm 
«g«*S 
000000 
'S^S» j 
11:1 
-2 
a 2 
