In 
20.to Ete: the final dilution of the sap being 1:500. 
fectivity is completely lost. 
in 
dry plants 
ose thw 
on +e < ath 
Fo ~ vet Roce 
2 e “ye 
Aas oh 
te BE 
wat > 
= 4 
a 
s 
= . . 
wig —e, . “| 
— ie see ain ere 
~ ee ngs: Nn pie é bore bee’ 
na ae Of ee ark 
s = Fanta ~ tae 
¢ 
De maneknaeneeseestsecsantior eae 
ASTIN ww Nat aN SBR Rae exer 
Ne udlag oe eee ea ea LL 
fee ne ee , 
yn Se summer 8 Teese 
vet yer’, r LN ‘ te 
nN tat > aan - 
ae wf gare see 
¥ oS 
. ‘ 
wre a wart 
Sear rit a ‘ 
° Ce er eee I + ae 
Ae tt ae Re on 
Shaped ‘ 
sition put m - 
Ni Ph: cs aw a ia «4 
rr eh cae ee . x 
. Pelee gtk 8 ‘* 
- : =f ya eth Noe 4 SS * aoe 
Tore nec STATIC act DST ee, FORRES = : 
Ait Ra in Seal Sm ht ar thd . SPO NIET AAS jet 8 cant 
rt * 3 : = ORAS eR Ate rf Hoe ~: Ne ' se ey 4 
a oN tr ety ‘ ws avr, wp es a te 
* ‘ *, ral a | 
wens ws > eeu 
2-5) te = io 
Figure 
Different stages of mosaicness developing 
on the leaves of maize. 
a - bright minute spots of irregular shape, merging 
along with vein of leaf in stripes; b = yellow 
color stripes; c - formation of chlorotic spots. 
(6) 
