52 
B. Injuries to the roots. 
Injuij to the loots of corn in spring* and early summer may 
cron U thp th 1 ° OS t 0bserver the aspect of the growing 
no^ hoti f t ' fai S a PP ear ln spring, the difficulty may 
not be due to poor seed or to injuries to the kernel, but may 
be caused by an early insect attack upon the voun«- roots 
uhich may even kill the plant outright before the sorout has 
are most'hkelv t T h° r ° 0t l0U 'T -° f ^ corn and the wireworms 
aie most likely to be concerned in this form of injury. 
Later m the season, when the plant is a few inches high the 
uneven growth of the corn will often attract attention, patches 
th e e fleld adia r cen { t dVan a 1I!g Sl ° W,y in com P al 'ison with parts of 
•] ’ f nd "! a way not t0 be accounted for by 
differences of soil. In such cases, white grubs, wireworms corn- 
root worms, or plant lice should be sought for. Combined with 
11 s uneven growth, or possibly in times of drouth without it 
most ar , mei “ ay , notlce yellow patches in his field, the color beino’ 
com rrr 1 u / on the io J er ieaves - The r ° ot ] ° use ° f 
An especially significant symptom of more or less serious 
mischief is the presence in the field of numerous burrows of 
a I ? moil y . p |aced in or immediately near the hills of corn, 
d,Vof r« rL, COnSplCU °' 1S c shortIy after rai ns. This invariably in- 
be tntnU h a pres t eace of r° ot llce m the field, although if the'eorn 
be small a careful search may fail to detect them at the time 
lkAs such* t W tfc a f oc,atlon between the ants and the root 
£thl let , t,he , formei ; prepare the way for the latter early 
the season by sinking their burrows among the corn roots 
thus giving the lice access to them. e cum roots, 
., Hat . a,J out the time the ear is beginning to form, and from 
wind r!r?v U a, < bi |e stalks of corn are easily prostrated by 
be fonnd d thflt n tlf n n ! i° rea , diIy rise a 8' aiu > jt will commonly 
ound that the hold of the plant upon the earth is abnormally 
at all ASt°?o d aSt°eria?d?/eai e 3 iuSt ?g seribed is not duo to insect attack 
by Prof. T. J. Burrill in Bultetfn Nofi of k fhe w A . a n s 'earn root blight, fully described 
(August, 1889). In this disease the corn stoSs JrowW 'l ura 1 Experiment Station 
usually slender, and sometimes dying whife y ouSrThe \ o E ^i’n beeomiD 5 yellow and 
upon the lowest leaves. On pulling ud thn nfaWt ft a 3llo J color is most pronounced 
|° be injured and usually dend the bott m nao’ £ f thI d S?i th n- wu St root8 are seen 
tached being similarly affected If snlitthJmmh ^ hleh these roots are at- 
part is seen to be of auniformdarkS colSr 2nd w d J?’ th , e ianer of this lower 
less pronounced above appears in tht?discoloration, becoming less and 
them are seemingly bealthy On tLsfirSS? }, oms ’ w bile the parts between 
rodod spots may be found, sometimes cohered with a fl?m gelatinous materia™™ 1 * 11 COr ' 
