Superphosphate Ou Tobacco Beds a bed 100 leet long and 9 teet w1de); number ot plants
,Cm,Hmw([ from Page 9) at second pulling; and total number ot plants. ~·
One pound superphosphate, 3,780 plants and 11,700 _`
Neil lll all Plots €XC€Pt 0“€· Thls WHS *1 Control bed » plants, total 15,500; two pounds superphosphate, V,
whew1¤¤·ltlw¤‘m¢¤t¢r1=¤lwas umd- 17,600 plants and 12,100 plants, total, 29,700; three ‘
Flglllw thdt lollow ML lll tlllb Ol(l€1· lll0SPh=ltL hlte pounds superphosphate, 2(),700 plants and 9,180 plants, A}
PW $‘1Um`¢` Yimlé lulmber Ol Plants at first lmllmg (lor total 29 900; and four nounds su Jer whos >hate 18,400
» l 1 1 1 » .
.»;;4 -:.’ . ~   ~ ,.v .·  fli ·        ,_,  .~·~ -   plants and 12,200, total 30,600. *4
V  ,    ’·r   Q;        {   -   C011t1'0l bed (110 Superphosphate or cale1u1n ey- 0
»“··&{‘  » ‘ ·;’,§   V * ·V  , x . ·<-·, ..’   _ .1 1 _ __ . 0 -0 VM I
%· »   _   Q     { ,,__ :_·j_V anannc e); No p ants at Hist pulling, -,5..0 at secont ,
    it 1     l “‘ `   i ·V=y—tt E '   total 2 520.
·L    __ V A ’ " _V V VV   V_» V  t » V ._-,,   . =· · _
T   ;~;   ,;, V     V   - .  _,   Calcium cyanannde alone (no phosphate), 1,260
 A ·  i ` A a,  V  ~, . ·*    _;,;~     plants, 1.080 plants, total 2,340. V
V    =·; ‘ ""* V4 zV   "   V ` . —
 .. ‘ V xg V  **4. -- V ·.   ¢,.   _ Seay said concentrated superphosphate was used on V
V P7     :-» .   '`'`     · ·
‘   A   ) VV - ,   ,.,,   V a separate test bed, calcium metaphosphate on still ;
        · 2;,* ¤ .. ‘ ···==»   another, and calcium cyanamide on both. Results. _ , .
T' a··· *   * i . •\“ _ wt gy-`~·~   ,     ‘=, . however, were poor. The concentrated phosphate test V
.’ L V,.  gv hate needed 011 tobacco 6
1: ,,,V·’ sg `E fi ,  1 1 V
·%—¥ ` ·   ¤~ ~ · · A r- `*·*¤’ ` A V ‘ ``Vti beds., The experiment is continuing, he said, to Cheek 5;*
Fig. l.- The plot shown above received l% pounds ol tial- ygsults fl]1'tl'1€1'_
*`“"“ "?`*"“"""l“ T"‘l 2 l"";“‘l“ "l ZW!*¤V1·°*‘1*l:***1;l*V2;*¢%;¤*` The American Cvanamid Co., manufacturer ot the W
·;··V;V.l£ ;t·"z.‘ ·*‘· 2 °* `t·'z.   . , '. · . . ·
”°l""° tml ml ml UI" “U° llllllu lll IL I lh weed—l VwV; A   ,; . ` `
, ··     —_,,.. R         .,._ ._ _; _t‘..   —=:,-   Methyl Bronude Controls eeds A
J   fe  '`>i'  ’ :"§2·sVZ   ·‘·-‘ *   ·.-~·V.     ‘`’’   .-·:      =t:a*  ’  ·:»·   was  V
    W   »~.:. ·  =·· V  1   »~   \.   ->    a   ; ·..==     - . .
   ,§§_s"‘·i{;~  ...,   -· —    °‘`,   ; Ray   ments ot methvl bromide have resulted in almost as _
 Iv `;»   pj _` °\ if   ,»`_ g (Q i` __j4' `.   , _z`;<_V&  +-1pg/_;V: /W   .;; V· i5 D · 1 . I W
gy X   "   "li,   v     menting the granular calcium cyanamide with two
"Y;*;_·€¤» j, .  53-. V- 1. .V `~ sg; »»~<.».”i";¥.2%W%`"°""? ,,Z&Y` pounds of 20 percent superphosphate per square yard ~
`“L°i$ ` 1 "   i HWS   Ol bed` 1
"~‘:*`,"·,. >' ¢~ "<· >` ‘*  _ . . . — , s, V
      »~;     ; ~" ; A ag   The eyanannde solution in fall or spring was fairly 7
  ```t           ellective. but residues from treatment retarded plant *5*
use     ~ `· _ ‘ I   Vt Q   .   production somewhat. However, usable—plant rate
  · » Maj , _ e V, i   ;&i?,;§#~* , _ , _ 4
  r   ‘ * at < ‘ »» * »~¤‘ ~   . . was twice that ol beds where granular cyanannde was
Fig. 2.- This plot reteivetl ll; pounds per square yard ol` llSt‘(l. *
ealeitiiin t·yau;uuide iu the fall but did not receive su]>•:¤‘- Methyl bromide was applied as a gas under a tight A
l’l"’*l‘l‘*";`· *;}**1******;**_*¤*‘=*·{**‘*‘°*V°¤**‘***l***`°;l· Vllllc """°l°“ cover; the granular cyanamide was broadcast and t
;·· - ~ V   t t ··¤· . ner ·a· . .
In Im" O NIMH mm In 0 K. ”Hlllm . l ll 5 worked into beds. while vapam, allvl alcohol and pw
pereolated through them to determine il toxic materials _ _ _1   I IV ·
i·m... the (Vt-.m..mit1e t-(mit! be it-.a—iit·t1 lmm the soil. Unless l"l“"l °`¥*“‘*““" °` “"“` WP ‘°" """`tlY "” "'*‘“"`°"" ,i V
h\l]>('l`||l\U$l)l\i\l(` was present. this leaching was not successful. 1`1U(l d1`(*IlCl1CS.
10 K1·:x‘rUem‘ llxiixr Asn lloxn; Se11;Ne12—F,x1.1. 1956 g,
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