Penalty for private use to avoid
payment of postage $300
Kentucky Agricultural Experiment Station
University of Kentucky N
` Lexington, Ky. *
C%.We%/M40 ~‘=.,
Director {
FREE—Annual Report or Bulletin  
or Report of Progress
Permit No. 1109 _
POSTMASTER: Please return free if U _
unclaimed. See Postal Laws und Reg- éa
ulatxons. gy. W_12_55, 4,000  
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E ` nt Station   . ·  n x  ¤ P
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Seeks ,]O11I1SOIl GP3SS   R    I ‘ . L A ~
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johnson grass resembles   g/{  tlilii i _
COHtPO1 Methods S¤d¤¤ grass- ir ¤¤·¤=·Uv P i e ? Y  ‘ t.
grows in bunches, with    l       _  
_ _ _ several stems growing ·:   `’`;» A ‘   ' W
johnson grass, a perennial noxious weed, 1S becom- [mm each mot crown L ,"·\‘i   ,    4 " Q
ing widcly spread throughout Kentucky. Thousands The weed Spreads by r * liigfi   li ii  r _. f 
o acres o e ie o om ant ave een vir na i Q   i5}=,¥ A   + ‘ A
E f f rt] b tt I I h b t Hy the underground root- \     i i ll .   A
abandoned to the weed, and each year it is further stocks as well as by the V     .    =  i Q
encroaching on upland soils. Heavily infested fields Seed Several methods   it      I; L"  '_/ F5
. - . · · - 1 me V ;= * . .
become practically worthless tor the growing of row used (O control the i —Y=  l;,l{gj_ .‘. { M
, . . . . ¤’ , 4/ s.*,’i  ,   I
crops. Even where it is possible to eradicate the weed, weed are described in 1 ‘ I A yi'.     ui I ._ W
. . . J. · · . ` K \ ft ‘  rid   'll t   Y
the cost ranges from $50 to $75 an acre. mmm Kentucky Exmr \— ~ _    i' ii.,   I/.» —
` ‘ , ` . . w ’ J :6 * A i
Aroused by the situation, the Kentucky Agricul- sion Service Leaflet L_ _ ‘\·_  ‘ /li}: __l Hi,   ’/li, j Ls _
tural Experiment Station has underway research de- I57 acommmng ]0hn_         " 
signed to develop practical means of controlling the Son Grass], A ww may 0   _,   ‘i
weed. These include thc use of cultural practices and bc Obtained fmmi your ` i  ii  _°¤’ i ( z
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chemical methods, as well as combinations of the two. (Gunn. agricultural t`   `  ` — — 
One of the promising methods, as revealed in pre- agcm gn from the Bul_       i_ .. ‘¤'l
. :'· ."‘ . # F *
liminary findings, is a 4-step program: lem] R00m_ Expcrp   §"l§;{._ —    l"
1. Weakening the plants by grazing or clipping; mem Station Building .       f; Z 2
2. Spraying the re-growth. when 10-12 inches tall, Univcrsiw Oi Kcmiicky    ·
with certain of the newer herbicides; {     Q   i {gi
3. Plowing under the plants about 10 days to 2 gi iiiigf 4/o    i
weeks later; followed by _  0 1;** lll  Qi K
4. Cultivating at one-month intervals. is i,}    ‘ Q
The use in mid-july of the herbicides, at a low rate. Y  \’ i.  '   I i
in this treatment permits the seeding of small grains i ’ °,/ _Q_  , _ V  
in the tall. l  _1/gl   ` S
In charge of the johnson grass investigations is Prof. ¢¤ `l   7
_l. F`. Freeman. of the :\gronomy Department. in
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