The Anderson daily intelligencer. [volume] (Anderson, S.C.) 1914-1915, 1915-01-26
c0TT0a a0OlkNOT IND 10 AIlT

7 y y H.t - 7 ri y :
Washington. Jan 90. = Cotton root.
knot, according to Farmers Bulletin
625. not only causes great damage In
itsclf. but when it is combined With
cotton wilt. as is frequently the case,
1t greatly increases the loss from
wit.
Plants diseased with cotton rot
knot are distinctly stunted, but not
appreciably deformed, as in wilt,
and haye peculiar sickly yellowish.
green color on both leaves and stems
In times OF drought. affected plants
are the first 10 show the lack or va.
ter and may wilt slightly in the riid.
Gle Sof the day. Ii such Iiant is
dug up carefully. the roots will be
round 10 be covered with swelling,
or gals from the size of pinhead 10
1-z inch or more in diameter. II one
OF Ut knots Is broken open, mn.
merous Early white, rounded bod.
less about one-half the size OF PIN
neac-the female nenlatodes-can OF.
ten be seen with the naked eye
Root-kfpt of cotton and other
crops is caused by these minute eel
worms. or nematodes, which bore IN
to the roots AMI live there The irri.
tntion OF their resence causes the for
nation OF sweuings or gals. The
male worms are zoo small TO be seen
with the naked eye, but the females
when full of eggs assume a sphe, i.
cal shape and may often be distin.
guished in freshly broken roots as
described above. Each female lays
several hundred eggs. and thus the
worms are propagated.
Aoot-knot may be carried from one
held to another by any agency winch
VIII transfer some OF the nematodcs
or their eggs, just as wilt is dissent,
mated by means of the fungus that
causes the wilt disease. Drainage
water is perhaps one OF the most Inn
portant means OF spreading root knot.
Nursery stock also Is conrfnUa
agency for the introduction OF the
nematode into new territory Seeding
pecRns, peaches, figs. fnulberries or
omegranates, and young asparaBis,
eabpage, eggplant. strawberry, %.
bacco, and tomato plants from IN
rested sectfons may carry the worms
IA their roots or in the soil adhefing,
TO them. In the west. where the
nen1atode occurs quite commonly in
certain sections on the potato, the
worms are carried in the tubers
Attacks Many Other Farm Crops.
81 Unlike wilt, foot-knot attacks a
very large number OF plants, many of
which are important farm ictops.
Those subject 70 root. Knot injury may
pc divided into TWO groups, according
-
crops most severely attacked by
Rra as f,iiStss.s 81, sayhaas
beet. cant aiou6e, carrot cele. /. bur
rfover. crinnson sci over. all varieiies
Eiiafa ana other iron A. 3ii5f,SJ s,ii,,s,s. !,
Ebef. egg gpIant; M leftuce s,ll "a SsSS 81
pecan, bonn fann q. pttSto a Sis;f
squash 6ijsedD. tDniat ts & an /, sva 81.
Ifiieion. sisf IS =.
Plants iess severely injured by
foot knot are the fs,llE,wins. 8 81
AifaIfa. asps sraEi,s. q 4 ,inSas bein s,,,,,
bean, cabbag age sweet clover. fsyesiTasSi.
cotton, mulberry onion. Garden i,f,t n !
sweet potato. fadists gpInacl, strasr.
berry, sugar cane: C0niiiion vefei,
hairy yetch. & & !,
/ "A few coIninod weeds are subieet
IS &:
fore be eratlicated where the -.
tempt ts4 being made to reduce root
knot in fieiTies The t,Slst seysralv Ia.
jcred are the. Balioo,i Vine. the ,nfiS
pop or passion iioyer. and the ranayn
sor melon pawpaw Weeds less severe.
iy af1ected by foot-knot are rias.
weed, purslane and sweet fenneI'
Such varieties Of cowpeas as ihe
yVhipp 60rYilt Clay Shack. I|hknow,,
Red Ripper, New Era. and Others afe
SO susceptible 10 root.isnot Tint f,ot
only are they sefiouSiy irj,ired but
the growing IT them on !, sniatoie.
iiI;ferted fields Erat: .iiy5 iiicresiseg the!
humber OF WORMS s In the soil. aud cot.